Academic literature on the topic 'Space frame structures'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Space frame structures.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Space frame structures"
1
., Aniket N. Tolani. "ADVANTAGES OF TENSILE STRUCTURES OVER OTHER SPACE FRAME STRUCTURES." International Journal of Research in Engineering and Technology 05, no. 05 (May 25, 2016): 568–75. http://dx.doi.org/10.15623/ijret.2016.0505106.
Full text
2
Soegiarso, R., and H. Adeli. "Optimization of Large Space Frame Steel Structures." Engineering Journal 34, no. 2 (June 30, 1997): 54–60. http://dx.doi.org/10.62913/engj.v34i2.681.
Full textAbstract:
Optimization of large space frame steel structures subjected to realistic code-specified stress, displacement, and buckling constraints is investigated. The basis of design is the American Institute of Steel Construction (AISC) Allowable Stress Design (ASD) specifications. The types of structures considered are space moment resisting frames with and without bracings. The structures are subjected to wind loadings according to the Uniform Building Code (UBC) in addition to dead and live loads. The parallel-vector algorithm developed in this research is applied to three highrise building structures ranging in size from a 20-story structure with 1,920 members to a 60-story structure with 5,760 members, and its parallel processing and vectorization performance is evaluated. For the largest structure, speedups of 6.4 and 17.8 are achieved due to parallel processing (using eight processors) and vectorization, respectively. When vectorization is combined with parallel processing a very significant speedup of 97.1 is achieved.
3
Kwan, A. S. K., and S. Pellegrino. "A New Concept for Large Deployable Space Frames." International Journal of Space Structures 9, no. 3 (September 1994): 153–62. http://dx.doi.org/10.1177/026635119400900304.
Full textAbstract:
This paper proposes a new concept for space frames that can be automatically deployed and regidified. Two functionally separate types of sub-structures are considered: active sub-structures, able to deploy automatically and to retain their stiffness when fully deployed, and passive sub-structures, structural mechanisms that become stiff in the deployed state, and whose deployment kinematics match those of the active sub-structures. A design methodology for space frames based on the new concept is presented and illustrated by an example, a square plate-like space frame that can be deployed by a single motor. In this example both types of sub-structures consist of bars, connected together by simple pin-joints, and cable elements. Most cables go slack when the space frame is folded, but become taut when it is fully deployed. A state of self-stress is set up in the deployed state, thus imposing a state of pretension onto all cables.
4
Meek, J. L., and S. Loganathan. "Large displacement analysis of space-frame structures." Computer Methods in Applied Mechanics and Engineering 72, no. 1 (January 1989): 57–75. http://dx.doi.org/10.1016/0045-7825(89)90121-7.
Full text
5
Ferrer, Osmin, Arley Sierra, and José Sanabria. "Soft Frames in Soft Hilbert Spaces." Mathematics 9, no. 18 (September 14, 2021): 2249. http://dx.doi.org/10.3390/math9182249.
Full textAbstract:
In this paper, we use soft linear operators to introduce the notion of discrete frames on soft Hilbert spaces, which extends the classical notion of frames on Hilbert spaces to the context of algebraic structures on soft sets. Among other results, we show that the frame operator associated to a soft discrete frame is bounded, self-adjoint, invertible and with a bounded inverse. Furthermore, we prove that every element in a soft Hilbert space satisfies the frame decomposition theorem. This theoretical framework is potentially applicable in signal processing because the frame coefficients serve to model the data packets to be transmitted in communication networks.
6
Lyu, Naesung, and Kazuhiro Saitou. "Decomposition-Based Assembly Synthesis of Space Frame Structures Using Joint Library." Journal of Mechanical Design 128, no. 1 (November 25, 2004): 57–65. http://dx.doi.org/10.1115/1.1909203.
Full textAbstract:
This paper presents a method for identifying the optimal designs of components and joints in the space frame body structures of passenger vehicles considering structural characteristics, manufacturability, and assembleability. Dissimilar to our previous work based on graph decomposition, the problem is posed as a simultaneous determination of the locations and types of joints in a structure and the cross sections of the joined structural frames, selected from a predefined joint library. The joint library is a set of joint designs containing the geometry of the feasible joints at each potential joint location and the cross sections of the joined frames, associated with their structural characteristics as equivalent torsional springs obtained from the finite element analyses of the detailed joint geometry. Structural characteristics of the entire structure are evaluated by finite element analyses of a beam-spring model constructed from the selected joints and joined frames. Manufacturability and assembleability are evaluated as the manufacturing and assembly costs estimated from the geometry of the components and joints, respectively. The optimization problem is solved by a multiobjective genetic algorithm using a direct crossover. A case study on an aluminum space frame of a midsize passenger vehicle is discussed.
7
Meek, J. L., and S. Loganathan. "Geometrically non-linear behaviour of space frame structures." Computers & Structures 31, no. 1 (January 1989): 35–45. http://dx.doi.org/10.1016/0045-7949(89)90165-x.
Full text
8
Fleischer, J., and J. Schaedel. "Joining automotive space frame structures by filament winding." CIRP Journal of Manufacturing Science and Technology 6, no. 2 (January 2013): 98–101. http://dx.doi.org/10.1016/j.cirpj.2013.02.003.
Full text
9
Gao, Hui, Yuxi Wang, Xuhao Fan, Binzhang Jiao, Tingan Li, Chenglin Shang, Cheng Zeng, et al. "Dynamic 3D meta-holography in visible range with large frame number and high frame rate." Science Advances 6, no. 28 (July 2020): eaba8595. http://dx.doi.org/10.1126/sciadv.aba8595.
Full textAbstract:
The hologram is an ideal method for displaying three-dimensional images visible to the naked eye. Metasurfaces consisting of subwavelength structures show great potential in light field manipulation, which is useful for overcoming the drawbacks of common computer-generated holography. However, there are long-existing challenges to achieving dynamic meta-holography in the visible range, such as low frame rate and low frame number. In this work, we demonstrate a design of meta-holography that can achieve 228 different holographic frames and an extremely high frame rate (9523 frames per second) in the visible range. The design is based on a space channel metasurface and a high-speed dynamic structured laser beam modulation module. The space channel consists of silicon nitride nanopillars with a high modulation efficiency. This method can satisfy the needs of a holographic display and be useful in other applications, such as laser fabrication, optical storage, optics communications, and information processing.
10
Storozhenko, Leonid, Dmytro Yermolenko, and Grygorii Gasii. "Investigation of the Deformation State of a Composite Cable Space Frame Structures with a Photogrammetric Method." International Journal of Engineering & Technology 7, no. 3.2 (June 20, 2018): 442. http://dx.doi.org/10.14419/ijet.v7i3.2.14568.
Full textAbstract:
The article presents experimental study results of the deformation state of composite cable space frame structures, including composite steel-concrete structures. Composite cable space frame structures are three-dimensional roof framing of long-span buildings. The designed constructions are a new type of roof framing structures and consist of typical composite steel-concrete modules connected with steel cable elements. The operation of composite cable space frame structures under load is characterised by geometric nonlinearity. The aim of the research is to study the deformation state and changing the geometric shape of experimental structures under the influence of external load. The technique of studying the deformation state of the composite cable space frame structures is based on the principles of digital photogrammetry. At the limit state the composite cable space frame structures change their regular shape. In this case, the central vertical points get the greatest vertical displacements, and the displacement value decreases closer to the supports. It is defined that the investigated construction has demonstrated combined action of all its components during the test, which indicates its effectiveness. The application of the photogrammetry method made possible to determine the moment of reaching the limit state of the composite cable space frame structures concretely.
Dissertations / Theses on the topic "Space frame structures"
1
Kahn, Steven Phillip. "Experimental verification and development of structural identification techniques on a grid." Thesis, This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-03122009-040526/.
Full text
2
Pradyumna, M. "Influence Of Joint Compliance On The Behaviour Of Space Structures." Thesis, Indian Institute of Science, 2000. https://etd.iisc.ac.in/handle/2005/258.
Full textAbstract:
Space structures are inevitable while covering large spans. Space structures are skeletal structures, which are lighter for the same stiffness when compared with RCC roofs. Till now, space structures, like any other metal structures have been designed assuming the joints as rigid, although there have been several publications about semi rigid joints. Of course, the publications mostly deal with 2D structures and there are very few reports on 3D structures. Space structures, by their nature fall into the latter category.
The joints in a space structure are popularly called as "nodes". Generally, nodes, which ensure concentricity of member axes, are either solid or hollow. These are either cast or forged. There are other proprietary types, which do not come under the above classification, and have not been considered in this thesis. Hollow nodes are obviously more economical than solid nodes, but also more flexible. While it is prudent to prefer hollow nodes, it is equally necessary to assess their flexibility, because of its influence on the behaviour of the structure.
The hollow spherical node is very popular because of its simplicity and adaptability to various forms of space frames. Double layer grids, which are the most popular forms for roofing applications, are being increasingly implemented. While the hollow spherical node is well suited for double layer grids, an evolutionary development has been what is called as the hollow octahedral node (this node is simply referred to as the 'Octa ' node in this thesis).
Chapter 1 introduces space frames and double layer grids in particular, with the advantages of using double-layer grids. Jointing systems available around the world are briefed and the node connector used in the present study is introduced with a brief write-up on its advantages and disadvantages. This chapter also explores the available literature and, the scope and objectives of the thesis are mentioned.
Chapter 2 introduces 3D finite element models of the hollow spherical and octahedral nodes. The stiffness matrixes of these nodes have been derived by conducting analyses on the computer for six sizes each of the Octa and spherical nodes. Using the stiffness matrix of the node, a new method of incorporating this into the regular analysis of a space truss has been developed. The new method proposed yields realistic values for the forces in the members and takes into account the elastic deflections in the node under the action of member forces. Implementation of the proposed method has been carried out by writing a custom program using state-of-the-art object oriented programming techniques. A sample problem has been analyzed using this program to demonstrate the effect of including joint flexibility. The effect of flexibility of nodes on the effective length of compression members in double-layer grids has been evaluated. The effect of compliance on the dynamic characteristics of a space frame has also been evaluated for the sample space frame with flexible joints. The analysis program has been modified to evaluate the natural frequencies of the system using rigid or flexible nodes.
The study of the Octanode and spherical node under the action of uniaxial compression
and tension dominates the contents of Chapter 3. The two types of nodes have been
analyzed using commercially available finite element software considering material
nonlinearity. The stress patterns from the analyses have been examined thoroughly.
Two consistent methods for fixing the load at yield in both uniaxial compression and
tension have been proposed using the load-displacement curve. Yield loads for all the
nodes have been evaluated using both the methods and the results agree well between the
two methods. Three material yield values have been selected for each of the node size
for evaluating the yield values viz. 240,320 and 415 MPa. The members of a double layer
grid are connected to the nodes by bolts and holes are drilled in the nodes for this
purpose. The bolthole patterns differ between two popular types of double-layer grids.
Both these bolthole patterns have been modeled separately in the above exercise and the
results for these two have been shown to be approximately the same. The effect of
varying diameters of the boltholes on the response of the nodes has been examined.
Relationships between the yield load, diameter, thickness and material yield have been
developed using the method of least squares. The differences in the behaviour of the nodes under uniaxial compression and tension have been discussed. Ramberg Osgood type of relationships have been worked out for all the load-displacement curves obtained from the analyses. The simulation of non-linear behaviour of nodes with cracks with plastic crack closing forces have been carried out with useful insights into the behaviour of the two types of nodes in uniaxial compression and tension.
Chapter 4 is devoted largely for studying the two types of nodes under the influence of biaxial load combinations. The combinations studied are dual compression, dual tension and compression-tension. In all cases equal loads are applied along two orthogonal; directions in the horizontal plane. Stress patterns have been examined for each type of load combination and yield values for each case have been obtained using one of the methods proposed in chapter 3. These have been compared with the corresponding uniaxial values in both compression and tension. Some useful inferences have been possible by studying the behaviour of the nodes under the various biaxial load combinations. In each case, relationships between the biaxial yield load, uniaxial yield load, diameter of node, thickness of node and material yield of node have been obtained using the method of least squares. The nodes have been analyzed under some selected Multi-axial loading and combinations of load which cause yield based on the second method proposed in Chapter 3 have been obtained and tabulated. However, a proper and thorough study of the nodes under multi-axial loading proved to be beyond the scope of this thesis.
Chapter 5 contains the contributions made towards developing new methods and algorithms for obtaining the several results of chapters 2, 3 and 4, using object oriented programming (OOP) techniques. The contributions have been in Object Pascal, the underlying language of Delphi, a popular RAD tool developed by Borland/Inprise of USA. Several new modules have been developed to reliably handle the large amounts of data generated by the hundreds of analyses detailed in chapters 2,3 and 4. The ease with which new methods were possible to be incorporated into existing software using OOP has been demonstrated, with source code examples. Comparisons with other types of tools available and die advantages of using OOP have also been demonstrated using the experience during the preparation of this thesis. A strong case for OOP as an indispensable tool for the researcher has been made.
Chapter 6: Several important conclusions and suggestions for future work have been made.
Appendix 1 contains a brief note on the Method of Least Squares.
Appendix 2 contains a small write-up on Delphi and OOP. Concepts of OOP have been briefly described and comparisons between three popular OOP languages have been attempted. A brief description of the features in Delphi's Object Pascal has also been provided.
Appendix 3 contains the listing of Unit Arrays, which is a general purpose unit developed to make handling of large arrays easy. Several matrix calculations have been implemented which make the unit extremely useful for programmers.
Appendix 4 contains the full listing of program FormK, which has been developed for chapter 2 to derive the fall stiffness matrix of a space frame node. The program picks up results from several analyses, forms a few columns of the stiffness matrix and then fills up the rest using the cyclic symmetry present in the space frame node. This program is given in full, with the intention that other researchers may find it useful to use it as-is or use after making small alterations to suit their circumstances. OOP is known for fast, reliable and easy ways of implementing modifications to existing code.
Appendix 5 provides the full listing of the Object Pascal program for extracting Eigenvalues of a space truss with rigid joints or flexible joints. The incorporation of flexibility of the joints proposed in chapter 2 has been implemented. Descriptions of the program's implementations have been provided in chapter 5.
Bibliography contains the alphabetical list of references.
3
Pradyumna, M. "Influence Of Joint Compliance On The Behaviour Of Space Structures." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/258.
Full textAbstract:
Space structures are inevitable while covering large spans. Space structures are skeletal structures, which are lighter for the same stiffness when compared with RCC roofs. Till now, space structures, like any other metal structures have been designed assuming the joints as rigid, although there have been several publications about semi rigid joints. Of course, the publications mostly deal with 2D structures and there are very few reports on 3D structures. Space structures, by their nature fall into the latter category.
The joints in a space structure are popularly called as "nodes". Generally, nodes, which ensure concentricity of member axes, are either solid or hollow. These are either cast or forged. There are other proprietary types, which do not come under the above classification, and have not been considered in this thesis. Hollow nodes are obviously more economical than solid nodes, but also more flexible. While it is prudent to prefer hollow nodes, it is equally necessary to assess their flexibility, because of its influence on the behaviour of the structure.
The hollow spherical node is very popular because of its simplicity and adaptability to various forms of space frames. Double layer grids, which are the most popular forms for roofing applications, are being increasingly implemented. While the hollow spherical node is well suited for double layer grids, an evolutionary development has been what is called as the hollow octahedral node (this node is simply referred to as the 'Octa ' node in this thesis).
Chapter 1 introduces space frames and double layer grids in particular, with the advantages of using double-layer grids. Jointing systems available around the world are briefed and the node connector used in the present study is introduced with a brief write-up on its advantages and disadvantages. This chapter also explores the available literature and, the scope and objectives of the thesis are mentioned.
Chapter 2 introduces 3D finite element models of the hollow spherical and octahedral nodes. The stiffness matrixes of these nodes have been derived by conducting analyses on the computer for six sizes each of the Octa and spherical nodes. Using the stiffness matrix of the node, a new method of incorporating this into the regular analysis of a space truss has been developed. The new method proposed yields realistic values for the forces in the members and takes into account the elastic deflections in the node under the action of member forces. Implementation of the proposed method has been carried out by writing a custom program using state-of-the-art object oriented programming techniques. A sample problem has been analyzed using this program to demonstrate the effect of including joint flexibility. The effect of flexibility of nodes on the effective length of compression members in double-layer grids has been evaluated. The effect of compliance on the dynamic characteristics of a space frame has also been evaluated for the sample space frame with flexible joints. The analysis program has been modified to evaluate the natural frequencies of the system using rigid or flexible nodes.
The study of the Octanode and spherical node under the action of uniaxial compression
and tension dominates the contents of Chapter 3. The two types of nodes have been
analyzed using commercially available finite element software considering material
nonlinearity. The stress patterns from the analyses have been examined thoroughly.
Two consistent methods for fixing the load at yield in both uniaxial compression and
tension have been proposed using the load-displacement curve. Yield loads for all the
nodes have been evaluated using both the methods and the results agree well between the
two methods. Three material yield values have been selected for each of the node size
for evaluating the yield values viz. 240,320 and 415 MPa. The members of a double layer
grid are connected to the nodes by bolts and holes are drilled in the nodes for this
purpose. The bolthole patterns differ between two popular types of double-layer grids.
Both these bolthole patterns have been modeled separately in the above exercise and the
results for these two have been shown to be approximately the same. The effect of
varying diameters of the boltholes on the response of the nodes has been examined.
Relationships between the yield load, diameter, thickness and material yield have been
developed using the method of least squares. The differences in the behaviour of the nodes under uniaxial compression and tension have been discussed. Ramberg Osgood type of relationships have been worked out for all the load-displacement curves obtained from the analyses. The simulation of non-linear behaviour of nodes with cracks with plastic crack closing forces have been carried out with useful insights into the behaviour of the two types of nodes in uniaxial compression and tension.
Chapter 4 is devoted largely for studying the two types of nodes under the influence of biaxial load combinations. The combinations studied are dual compression, dual tension and compression-tension. In all cases equal loads are applied along two orthogonal; directions in the horizontal plane. Stress patterns have been examined for each type of load combination and yield values for each case have been obtained using one of the methods proposed in chapter 3. These have been compared with the corresponding uniaxial values in both compression and tension. Some useful inferences have been possible by studying the behaviour of the nodes under the various biaxial load combinations. In each case, relationships between the biaxial yield load, uniaxial yield load, diameter of node, thickness of node and material yield of node have been obtained using the method of least squares. The nodes have been analyzed under some selected Multi-axial loading and combinations of load which cause yield based on the second method proposed in Chapter 3 have been obtained and tabulated. However, a proper and thorough study of the nodes under multi-axial loading proved to be beyond the scope of this thesis.
Chapter 5 contains the contributions made towards developing new methods and algorithms for obtaining the several results of chapters 2, 3 and 4, using object oriented programming (OOP) techniques. The contributions have been in Object Pascal, the underlying language of Delphi, a popular RAD tool developed by Borland/Inprise of USA. Several new modules have been developed to reliably handle the large amounts of data generated by the hundreds of analyses detailed in chapters 2,3 and 4. The ease with which new methods were possible to be incorporated into existing software using OOP has been demonstrated, with source code examples. Comparisons with other types of tools available and die advantages of using OOP have also been demonstrated using the experience during the preparation of this thesis. A strong case for OOP as an indispensable tool for the researcher has been made.
Chapter 6: Several important conclusions and suggestions for future work have been made.
Appendix 1 contains a brief note on the Method of Least Squares.
Appendix 2 contains a small write-up on Delphi and OOP. Concepts of OOP have been briefly described and comparisons between three popular OOP languages have been attempted. A brief description of the features in Delphi's Object Pascal has also been provided.
Appendix 3 contains the listing of Unit Arrays, which is a general purpose unit developed to make handling of large arrays easy. Several matrix calculations have been implemented which make the unit extremely useful for programmers.
Appendix 4 contains the full listing of program FormK, which has been developed for chapter 2 to derive the fall stiffness matrix of a space frame node. The program picks up results from several analyses, forms a few columns of the stiffness matrix and then fills up the rest using the cyclic symmetry present in the space frame node. This program is given in full, with the intention that other researchers may find it useful to use it as-is or use after making small alterations to suit their circumstances. OOP is known for fast, reliable and easy ways of implementing modifications to existing code.
Appendix 5 provides the full listing of the Object Pascal program for extracting Eigenvalues of a space truss with rigid joints or flexible joints. The incorporation of flexibility of the joints proposed in chapter 2 has been implemented. Descriptions of the program's implementations have been provided in chapter 5.
Bibliography contains the alphabetical list of references.
4
Wong, Chun-kuen, and 黃春權. "Symmetry reduction for geometric nonlinear analysis of space structures." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31214721.
Full text
5
Wong, Chun-kuen. "Symmetry reduction for geometric nonlinear analysis of space structures /." Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18379734.
Full text
6
Ball, Jeffrey Craig. "Design and analysis of multifunctional composite structures for nano-satellites." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2572.
Full textAbstract:
Thesis (MTech (Mechanical Engineering))--Cape Peninsula University of Technology, 2017.The aim of this thesis is to investigate the applications of multifunctional compos- ite (MFC) technology to nano-satellite structures and to produce a working concept design, which can be implemented on future Cube-Satellites (CubeSats). MFC tech- nologies can be used to optimise the performance of the satellite structure in terms of mass, volume and the protection it provides. The optimisation of the structure will allow further room for other sub-systems to be expanded and greater payload allowance. An extensive literature view of existing applications of MFC materials has been conducted, along with the analysis of a MFC CubeSat structural design account- ing for the environmental conditions in space and well-known design practices used in the space industry. Numerical analysis data has been supported by empirical analysis that was done where possible on the concept material and structure. The ndings indicate that the MFC technology shows an improvement over the conventional alu- minium structures that are currently being used. Improvements in rigidity, mass and internal volume were observed. Additional functions that the MFC structure o ers include electrical circuitry and connections through the material itself, as well as an increase electromagnetic shielding capability through the use of carbon- bre composite materials. Empirical data collected on the MFC samples also show good support for the numerical analysis results. The main conclusion to be drawn from this work is that multifunctional composite materials can indeed be used for nano-satellite structures and in the same light, can be tailor-made to the speci c mission requirements of the satellite. The technology is in its infancy still and has vast room for improvement and technological development beyond this work and well into the future. Further improvements and additional functions can be added through the inclusion of various other materials.
7
Jau, Jih Jih. "Geometrically nonlinear finite element analysis of space frames." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/54302.
Full textAbstract:
The displacement method of the finite element is adopted. Both the updated Lagrangian formulation and total Lagrangian formulation of a three-dimensional beam element is employed for large displacement and large rotation, but small strain analysis.
A beam-column element or finite element can be used to model geometrically nonlinear behavior of space frames. The two element models are compared on the basis of their efficiency, accuracy, economy and limitations.
An iterative approach, either Newton-Raphson iteration or modified Riks/Wempner iteration, is employed to trace the nonlinear equilibrium path. The latter can be used to perform postbuckling analysis.Ph. D.
8
Lovejoy, Vincent Dean. "Dynamics and control of a planar truss actuator." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/52056.
Full textAbstract:
Recent demands in large space structure technology have suggested the use of active control actuators integral to a structures' construction. The concept of a 3-D (triangular cross-sectioned) active truss is presented. The linear equations of motion for one plane of the truss are derived. A model for a generic flexible beam is then appended to the planar truss model. A linear time-invariant optimal control law is found, followed by a presentation of an experimental planar truss built to test the concept. Physical parameters are then substituted into the dynamic model and several sets of control gains are found. The "Kalman'' gains are applied to the experimental structure. Experimental results are compared to expected theoretical results with good (30%) correlation. Conclusions are drawn and suggestions are made for further research.Master of Science
9
Smith, William Travis. "A synthesis procedure for array feeds to improve radiation performance of large distorted reflector antennas." Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-07102007-142513/.
Full text
10
Clark, William Walker. "A planar comparison of actuators for vibration control of flexible structures." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/43387.
Full textBooks on the topic "Space frame structures"
1
International Conference on Space Structures (5th 2002 University of Surrey). Space structures 5. London: Thomas Telford, 2002.
Find full text
2
International Conference on Space Structures (5th 2002 University of Surrey). Space structures 5. London: Thomas Telford, 2002.
Find full text
3
Eekhout, Mick. Architecture in space structures. Rotterdam: Uitgeverij 010 Publishers, 1989.
Find full text
4
Vance, Mary A. Space frame structures: A bibliography. Monticello, Ill: Vance Bibliographies, 1986.
Find full text
5
Narayanan, Subramanian. Space structures: Principles and practice. Brentwood, Essex: Multi-Science Publishing, 2006.
Find full text
6
Narayanan, Subramanian. Space structures: Principles and practice. Brentwood, Essex: Multi-Science Publishing, 2006.
Find full text
8
1928-, Schmit Lucien André, and Langley Research Center, eds. Alternative approximation concepts for space frame synthesis. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1985.
Find full text
9
Vinogradov, G. G. Raschet stroitelʹnykh prostranstvennykh konstrukt͡s︡iĭ. Leningrad: Stroĭizdat, Leningradskoe otd-nie, 1990.
Find full text
10
Yang, Yeong-Bin. Theory & analysis of nonlinear framed structures. New York: Prentice Hall, 1994.
Find full textBook chapters on the topic "Space frame structures"
1
Zhao, Xiao-Ling, Geordie McKinlay, Peter Lim, Paul Joseph, and Yong-Lin Pi. "Structural behaviour of Oktalok space frame." In Tubular Structures VII, 83–90. London: Routledge, 2022. http://dx.doi.org/10.1201/9780203735008-14.
Full text
2
Zhao, Xiao-Ling, Geordie McKinlay, Peter Lim, Paul Joseph, and Yong-Lin Pi. "Structural behaviour of Oktalok space frame." In Tubular Structures VII, 83–90. London: Routledge, 2022. http://dx.doi.org/10.1201/9780203735008-14.
Full text
3
Karadeniz, Halil, Mehmet Polat Saka, and Vedat Togan. "Finite Element Analysis of Space Frame Structures." In Springer Series in Reliability Engineering, 1–119. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-84996-190-5_1.
Full text
4
Perka, Ashok Kumar, Bijoy Rajak, and Shibashis Ghosh. "3D Printing of Tubular Connectors for Space Frame Structures." In Construction 3D Printing, 251–62. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-64269-2_31.
Full text
5
Aksöz, Zeynep, and Clemens Preisinger. "An Interactive Structural Optimization of Space Frame Structures Using Machine Learning." In Impact: Design With All Senses, 18–31. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-29829-6_2.
Full text
6
Kubik, L. A., and Sulojana Shanmuganathan. "A review of the factors influencing the cost of CUBIC Space Frame nodal connections." In Tubular Structures VI, 115–21. London: Routledge, 2021. http://dx.doi.org/10.1201/9780203735015-18.
Full text
7
Sfakianakis, Manolis G., and Michael N. Fardis. "Biaxial column element for nonlinear dynamic analysis of space-frame reinforced concrete structures." In Structural Dynamics, 557–64. London: Routledge, 2022. http://dx.doi.org/10.1201/9780203738085-82.
Full text
8
Søndergaard, Asbjørn, Oded Amir, Phillip Eversmann, Luka Piskorec, Florin Stan, Fabio Gramazio, and Matthias Kohler. "Topology Optimization and Robotic Fabrication of Advanced Timber Space-Frame Structures." In Robotic Fabrication in Architecture, Art and Design 2016, 190–203. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-26378-6_14.
Full text
9
Bach, Pascal, Ilaria Giacomini, and Marirena Kladeftira. "Self-interlocking 3D Printed Joints for Modular Assembly of Space Frame Structures." In Towards Radical Regeneration, 427–41. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-13249-0_34.
Full text
10
Radice, Martha. "15. Happy Yardi Gras! Playing with Carnival in New Orleans during the Covid-19 Pandemic." In Play in a Covid Frame, 319–42. Cambridge, UK: Open Book Publishers, 2023. http://dx.doi.org/10.11647/obp.0326.15.
Full textAbstract:
Carnival season in New Orleans is a playful time. People of all ages play with words as they come up with themes for floats, costumes and throws (small gifts thrown to spectators). They play with materials and crafting skills as they make these items. They play with personas, roles and hedonic pleasures as they participate in the parades and parties that culminate in Mardi Gras day. With the 2021 parades cancelled, New Orleanians set about re-imagining carnival for pandemic times, playing with its structures to be able to celebrate at a safe distance. The idea that most captured their imaginations was the Krewe of House Floats, a Twitter joke that accidentally inspired thousands of households to decorate their homes as parade floats. Drawing on anthropological and geographical approaches to play and ethnographic fieldwork conducted over seven carnival seasons, I analyze the continuities and ruptures of playful carnival practices that were manifest in the creations and testimonies of people who participated in this phenomenon, also dubbed ‘Yardi Gras’. Like regular carnival, the house floats reflected uneven access to resources, materials, and know-how. Unlike regular carnival, they featured less satire and more whimsy, and often paid tribute to beloved local cultural icons. They also resituated carnival in domestic and neighbourhood space and sociality, temporarily reversing a trend toward centralization, and were a product of pandemic-specific temporality. Because carnival is re-made every year through improvisation and responsiveness to current events, resourcefulness and creativity are built into its social structure. I argue that this is what enabled its playful reconfiguration.
Conference papers on the topic "Space frame structures"
1
WOO, T. "Space frame optimization subject to frequency constraints." In 27th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1986. http://dx.doi.org/10.2514/6.1986-877.
Full text
2
LUST, R., and L. SCHMIT. "Alternative approximation concepts for space frame synthesis." In 26th Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1985. http://dx.doi.org/10.2514/6.1985-696.
Full text
3
Jalkanen, Jussi, and Juhani Koski. "Heuristic Methods in Space Frame Optimization." In 46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2005. http://dx.doi.org/10.2514/6.2005-1900.
Full text
4
Lyu, Naesung, and Kazuhiro Saitou. "Decomposition-Based Assembly Synthesis of Space Frame Structures Using Joint Library." In ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/detc2004-57301.
Full textAbstract:
This paper presents a method for identifying the optimal designs of components and joints in the space frame body structures of passenger vehicles considering structural characteristics, manufacturability and assembleability. Dissimilar to our previous work based on graph decomposition, the problem is posed as a simultaneous determination of the locations and types of joints in a structure and the cross sections of the joined structural frames, selected from a predefined joint library. The joint library is a set of joint designs containing the geometry of the feasible joints at each potential joint location and the cross sections of the joined frames, associated with their structural characteristics as equivalent torsional springs obtained from the finite element analyses of the detailed joint geometry. Structural characteristics of the entire structure are evaluated by finite element analyses of a beam-spring model constructed from the selected joints and joined frames. Manufacturability and assembleability are evaluated as the manufacturing and assembly costs estimated from the geometry of the components and joints, respectively. The optimization problem is solved by a multi-objective genetic algorithm using a direct crossover. A case study on an aluminum space frame (ASF) of a middle size passenger vehicle is discussed.
5
Thota, Jagadeep, Mohamed B. Trabia, and Brendan J. O’Toole. "Simulation of Shock Response in a Lab-Scale Space Frame Structure Using Finite Element Analysis." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64353.
Full textAbstract:
Space frames are usually used to enhance the structural strength of a vehicle while reducing its overall weight. Impact loading is a critical factor when assessing the functionality of these frames. In order to properly design the space frame structure, it is important to predict the shocks moving through the members of the space frame. While performance of space frame structures under static loads in well-understood, research on space frame structures subjected to impact loading is minimal. In this research, a lab-scale space frame structure, comprising of hollow square members that are connected together through bolted joints which allow for quick assembly/disassembly of a particular section, is manufactured. Non-destructive impact tests are carried out on this space frame structure and the resulting acceleration signals at various locations are recorded. A finite element (FE) model of the lab-scale structure is created and simulated for the experimental impact loads. Acceleration signals from the FE model are compared with the experimental data. The natural frequencies of the structure are also compared with the results of the FE model. The results show a good match between the model and the experimental setup.
6
Luzenina, Irina, and Liubov Sosnovskikh. "Steel space frame structures of long-span buildings." In IV INTERNATIONAL SCIENTIFIC AND PRACTICAL CONFERENCE “NEW INFORMATION TECHNOLOGIES IN THE ARCHITECTURE AND CONSTRUCTION” (NITAC 2021). AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0107369.
Full text
7
Taylor, P. H. "Current Blockage: Reduced Forces on Offshore Space-Frame Structures." In Offshore Technology Conference. Offshore Technology Conference, 1991. http://dx.doi.org/10.4043/6519-ms.
Full text
8
Yang, Bingen, Hongli Ding, Houfei Fang, and Michael Lou. "Modeling and Vibration Analysis of Deployable Space Boom Structures." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84519.
Full textAbstract:
Lightweight booms are being developed as a basic building element of deployable space structures for future NASA missions. This paper presents an analytical modeling and solution technique, namely the Distributed Transfer Function Method (DTFM), for synthesis and design of deployable boom structures. A space boom structure in consideration is modeled as a space frame that is enhanced by springs. In the DTFM, the distributed transfer functions describing the bending, torsion, and longitudinal deformations of frame members are first derived. A global dynamic equilibrium equation of the boom structure is assembled from the member transfer functions. Solution of the global equilibrium equation leads to free vibration solution and frequency response of the boom structure. The accuracy and efficiency of DTFM is demonstrated in a numerical example.
9
Daneshmand, Farhang, Abdolaziz Abdollahi, Mehdi Liaghat, and Yousef Bazargan Lari. "Free Vibration Analysis of Frame Structures Using BSWI Method." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68417.
Full textAbstract:
Vibration analysis for complicated structures, or for problems requiring large numbers of modes, always requires fine meshing or using higher order polynomials as shape functions in conventional finite element analysis. Since it is hard to predict the vibration mode a priori for a complex structure, a uniform fine mesh is generally used which wastes a lot of degrees of freedom to explore some local modes. By the present wavelets element approach, the structural vibration can be analyzed by coarse mesh first and the results can be improved adaptively by multi-level refining the required parts of the model. This will provide accurate data with less degrees of freedom and computation. The scaling functions of B-spline wavelet on the interval (BSWI) as trial functions that combines the versatility of the finite element method with the accuracy of B-spline functions approximation and the multiresolution strategy of wavelets is used for frame structures vibration analysis. Instead of traditional polynomial interpolation, scaling functions at the certain scale have been adopted to form the shape functions and construct wavelet-based elements. Unlike the process of wavelets added directly in the other wavelet numerical methods, the element displacement field represented by the coefficients of wavelets expansions is transformed from wavelet space to physical space via the corresponding transformation matrix. To verify the proposed method, the vibrations of a cantilever beam and a plane structures are studied in the present paper. The analyses and results of these problems display the multi-level procedure and wavelet local improvement. The formulation process is as simple as the conventional finite element method except including transfer matrices to compute the coupled effect between different resolution levels. This advantage makes the method more competitive for adaptive finite element analysis. The results also show good agreement with those obtained from the classical finite element method and analytical solutions.
10
Zhu, Dapeng, Chia-Hung Fang, Chunhee Cho, Jiajie Guo, Yang Wang, and Kok-Meng Lee. "Finite element model updating of a space frame bridge with mobile sensing data." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Masayoshi Tomizuka, Chung-Bang Yun, and Jerome P. Lynch. SPIE, 2012. http://dx.doi.org/10.1117/12.914942.
Full textReports on the topic "Space frame structures"
1
Roy, A. K., K. Li, and X. L. Gao. Micromechanical Analysis of Three-Dimensional Open-Cell Foams Using the Matrix Method for Space Frame Structures. Fort Belvoir, VA: Defense Technical Information Center, November 2004. http://dx.doi.org/10.21236/ada428834.
Full text
2
Moghimi, Gholamreza, and Nicos Makris. Response Modification of Structures with Supplemental Rotational Inertia. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, January 2024. http://dx.doi.org/10.55461/tihv1701.
Full textAbstract:
Tall, multistory, buildings are becoming increasingly popular in large cities as a result of growing urbanization trends (United Nations Department of Economic and Social Affairs 2018). As cities continue to grow, many of them along the coasts of continents which are prone to natural hazards, the performance of tall, flexible buildings when subjected to natural hazards is a pressing issue with engineering relevance. The performance of structures when subjected to dynamic loads can be enhanced with various response modification strategies which have been traditionally achieved with added stiffness, flexibility, damping and strength (Kelly et al. 1972; Skinner et al. 1973, 1974; Clough and Penzien 1975; Zhang et al. 1989; Aiken 1990; Whittaker et al. 1991; Makris et al. 1993a,b; Skinner et al. 1993; Inaudi and Makris 1996; Kelly 1997; Soong and Dargush 1997; Constantinou et al. 1998; Makris and Chang 2000a; Chang and Makris 2000; Black et al. 2002, 2003; Symans et al. 2008; Sarlis et al. 2013; Tena-Colunga 1997). Together with the elastic spring that produces a force proportional to the relative displacement of its end-nodes and the viscous dashpot that produces a force proportional to the relative velocity of its end-nodes; the inerter produces a force proportional to the relative acceleration of its end-nodes and emerges as the third elementary mechanical element (in addition to the spring and dashpot) capable for modifying structural response. Accordingly, in this report we examine the seismic performance of multistory and seismically isolated structures when equipped with inerters. In view that the inerter emerges as the third elementary mechanical element for the synthesis of mechanical networks, in Chapter 2 we derive the basic frequency- and time-response functions of the inerter together with these of the two-parameter inertoelastic and inertoviscous mechanical networks. Chapter 3 examines the response of a two-degree-of-freedom (2DOF) structure where the first story is equipped with inerters. Both cases of a stiff and a compliant support of the inerters are examined. The case of two parallel clutching inerters is investigated and the study concludes that as the compliance of the frame that supports the inerters increases, the use of a single inerter offers more favorable response other than increasing the force transferred to the support frame. Chapter 4 examines the seismic response analysis of the classical two-degree-of-freedom isolated structure with supplemental rotational inertia (inerter) in its isolation system. The analysis shows that for the “critical” amount of rotational inertia which eliminates the participation of the second mode, the effect of this elimination is marginal on the structural response since the participation of the second mode is invariably small even when isolation systems without inerters are used. Our study, upon showing that the reaction force at the support of the inerter is appreciable, proceeds with a non-linear response analysis that implements a state-space formulation which accounts for the bilinear behavior of practical isolation system (single concave sliding bearings or lead-rubber bearings) in association with the compliance of the support of the inerter. Our study concludes that supplemental rotational inertia aggravates the displacement and acceleration response of the elastic superstructure and as a result, for larger isolation periods (Tb > 2.5s) the use of inerters in isolation systems is not recommended. Chapter 5 first examines the response analysis of a SDOF elastoplastic and bilinear structure and reveals that when the yielding structure is equipped with supplemental rotational inertia, the equal- displacement rule is valid starting from lower values of the pre-yielding period given that the presence of inerters lengthens the apparent pre-yielding period. The analysis concludes that sup- plemental rotational inertia emerges as an attractive response modification strategy for elastoplastic and bilinear SDOF structures with pre-yielding periods up to T1 = 1.5sec. For larger pre-yielding periods (say T1 > 2.0sec), the effectiveness of inerters to suppress the inelastic response of 2DOF yielding structures reduces; and for very flexible first stories; as in the case of isolated structures examined in chapter 4, the use of inerter at the first level (isolation system) is not recommended. Finally, chapter 6 shows that, in spite of the reduced role of inerters when placed at floor levels other than the first level (they no-longer suppress the induced ground acceleration nor they can eliminate the participation of higher modes), they still manifest a unique role since it is not possible to replace a structure with solitary inerters at higher levels with an equivalent traditional structure without inerters.
3
Oliynyk, Kateryna, and Matteo Ciantia. Application of a finite deformation multiplicative plasticity model with non-local hardening to the simulation of CPTu tests in a structured soil. University of Dundee, December 2021. http://dx.doi.org/10.20933/100001230.
Full textAbstract:
In this paper an isotropic hardening elastoplastic constitutive model for structured soils is applied to the simulation of a standard CPTu test in a saturated soft structured clay. To allow for the extreme deformations experienced by the soil during the penetration process, the model is formulated in a fully geometric non-linear setting, based on: i) the multiplicative decomposition of the deformation gradient into an elastic and a plastic part; and, ii) on the existence of a free energy function to define the elastic behaviour of the soil. The model is equipped with two bonding-related internal variables which provide a macroscopic description of the effects of clay structure. Suitable hardening laws are employed to describe the structure degradation associated to plastic deformations. The strain-softening associated to bond degradation usually leads to strain localization and consequent formation of shear bands, whose thickness is dependent on the characteristics of the microstructure (e.g, the average grain size). Standard local constitutive models are incapable of correctly capturing this phenomenon due to the lack of an internal length scale. To overcome this limitation, the model is framed using a non-local approach by adopting volume averaged values for the internal state variables. The size of the neighbourhood over which the averaging is performed (characteristic length) is a material constant related to the microstructure which controls the shear band thickness. This extension of the model has proven effective in regularizing the pathological mesh dependence of classical finite element solutions in the post-localization regime. The results of numerical simulations, conducted for different soil permeabilities and bond strengths, show that the model captures the development of plastic deformations induced by the advancement of the cone tip; the destructuration of the clay associated with such plastic deformations; the space and time evolution of pore water pressure as the cone tip advances. The possibility of modelling the CPTu tests in a rational and computationally efficient way opens a promising new perspective for their interpretation in geotechnical site investigations.
4
Backstrom, Robert, and David Dini. Firefighter Safety and Photovoltaic Systems Summary. UL Firefighter Safety Research Institute, November 2011. http://dx.doi.org/10.54206/102376/kylj9621.
Full textAbstract:
Under the United States Department of Homeland Security (DHS) Assistance to Firefighter Grant Fire Prevention and Safety Research Program, Underwriters Laboratories examined fire service concerns of photovoltaic (PV) systems. These concerns include firefighter vulnerability to electrical and casualty hazards when mitigating a fire involving photovoltaic (PV) modules systems. The need for this project is significant acknowledging the increasing use of photovoltaic systems, growing at a rate of 30% annually. As a result of greater utilization, traditional firefighter tactics for suppression, ventilation and overhaul have been complicated, leaving firefighters vulnerable to potentially unrecognized exposure. Though the electrical and fire hazards associated with electrical generation and distribution systems is well known, PV systems present unique safety considerations. A very limited body of knowledge and insufficient data exists to understand the risks to the extent that the fire service has been unable to develop safety solutions and respond in a safe manner. This fire research project developed the empirical data that is needed to quantify the hazards associated with PV installations. This data provides the foundation to modify current or develop new firefighting practices to reduce firefighter death and injury. A functioning PV array was constructed at Underwriters Laboratories in Northbrook, IL to serve as a test fixture. The main test array consisted of 26 PV framed modules rated 230 W each (5980 W total rated power). Multiple experiments were conducted to investigate the efficacy of power isolation techniques and the potential hazard from contact of typical firefighter tools with live electrical PV components. Existing fire test fixtures located at the Delaware County Emergency Services Training Center were modified to construct full scale representations of roof mounted PV systems. PV arrays were mounted above Class A roofs supported by wood trusses. Two series of experiments were conducted. The first series represented a room of content fire, extending into the attic space, breaching the roof and resulting in structural collapse. Three PV technologies were subjected to this fire condition – rack mounted metal framed, glass on polymer modules, building integrated PV shingles, and a flexible laminate attached to a standing metal seam roof. A second series of experiments was conducted on the metal frame technology. These experiments represented two fire scenarios, a room of content fire venting from a window and the ignition of debris accumulation under the array. The results of these experiments provide a technical basis for the fire service to examine their equipment, tactics, standard operating procedures and training content. Several tactical considerations were developed utilizing the data from the experiments to provide specific examples of potential electrical shock hazard from PV installations during and after a fire event.
5
Backstrom, Robert, and David Backstrom. Firefighter Safety and Photovoltaic Installations Research Project. UL Firefighter Safety Research Institute, November 2011. http://dx.doi.org/10.54206/102376/viyv4379.
Full textAbstract:
Under the United States Department of Homeland Security (DHS) Assistance to Firefighter Grant Fire Prevention and Safety Research Program, Underwriters Laboratories examined fire service concerns of photovoltaic (PV) systems. These concerns include firefighter vulnerability to electrical and casualty hazards when mitigating a fire involving photovoltaic (PV) modules systems. The need for this project is significant acknowledging the increasing use of photovoltaic systems, growing at a rate of 30% annually. As a result of greater utilization, traditional firefighter tactics for suppression, ventilation and overhaul have been complicated, leaving firefighters vulnerable to potentially unrecognized exposure. Though the electrical and fire hazards associated with electrical generation and distribution systems is well known, PV systems present unique safety considerations. A very limited body of knowledge and insufficient data exists to understand the risks to the extent that the fire service has been unable to develop safety solutions and respond in a safe manner. This fire research project developed the empirical data that is needed to quantify the hazards associated with PV installations. This data provides the foundation to modify current or develop new firefighting practices to reduce firefighter death and injury. A functioning PV array was constructed at Underwriters Laboratories in Northbrook, IL to serve as a test fixture. The main test array consisted of 26 PV framed modules rated 230 W each (5980 W total rated power). Multiple experiments were conducted to investigate the efficacy of power isolation techniques and the potential hazard from contact of typical firefighter tools with live electrical PV components. Existing fire test fixtures located at the Delaware County Emergency Services Training Center were modified to construct full scale representations of roof mounted PV systems. PV arrays were mounted above Class A roofs supported by wood trusses. Two series of experiments were conducted. The first series represented a room of content fire, extending into the attic space, breaching the roof and resulting in structural collapse. Three PV technologies were subjected to this fire condition – rack mounted metal framed, glass on polymer modules, building integrated PV shingles, and a flexible laminate attached to a standing metal seam roof. A second series of experiments was conducted on the metal frame technology. These experiments represented two fire scenarios, a room of content fire venting from a window and the ignition of debris accumulation under the array. The results of these experiments provide a technical basis for the fire service to examine their equipment, tactics, standard operating procedures and training content. Several tactical considerations were developed utilizing the data from the experiments to provide specific examples of potential electrical shock hazard from PV installations during and after a fire event.
6
Pillay, Hitendra, and Brajesh Pant. Foundational ( K-12) Education System: Navigating 21st Century Challenges. QUT and Asian Development Bank, 2022. http://dx.doi.org/10.5204/rep.eprints.226350.
Full textAbstract:
Foundational education system commonly referred to as K-12 school education is fundamental for people to succeed in life as noted in United Nations declaration of human rights. Consequently, decades of investments have helped K-12 sector evolve and respond to new demands but many of the traditional thinking has remained and thus hinder agility and disruptive evolution of the system. In most countries the national school education systems are perhaps the largest single enterprise and subjected to socio-cultural, economic and political influences, which in turn make it reluctant and/or difficult to change the system. However, as the world transitions from industrial revolution to information revolution and now to knowledge economy, the foundational education sector has been confronted with several simultaneous challenges. The monograph reviews and analyses how these challenges may be supported in a system that is reliant on traditional rigid time frames and confronted by complex external pressures that are blurring the boundaries of the school education landscape. It is apparent that doing more of the same may not provide the necessary solutions. There is a need to explore new opportunities for reforming the school education space, including system structures, human resources, curriculum designs, and delivery strategies. This analytical work critiques current practices to encourage K-12 educators recognize the need to evolve and embrace disruptions in a culture that tends to be wary of change. The key considerations identified through this analytical work is presented as a set of recommendations captured under four broad areas commonly used in school improvement literature
7
Clark, Louise, Jo Carpenter, and Joe Taylor. Learning From Responsiveness to a Rapidly Evolving Context: IDRC’s Covid-19 Responses for Equity Programme. Institute of Development Studies, June 2022. http://dx.doi.org/10.19088/core.2022.004.
Full textAbstract:
This report summarises key institutional lessons that emerged from a Learning Journey commissioned by the International Development Research Centre (IDRC) for its Covid-19 Responses for Equity (CORE) programme. Learning Journeys are a research method developed by the Institute of Development Studies (IDS) to support collaborative scoping processes and provide participants with structured spaces to learn, discuss issues, and to reflect on their day-to-day work and how to apply learning. CORE was designed as a rapid response mechanism to address the sudden global shifts caused by the Covid-19 pandemic. The initiative supports 21 research projects with Southern partners across 42 countries. It seeks to understand the socioeconomic impacts of the pandemic, improve existing responses, and generate better policy options for recovery. The CORE Learning Journey was managed by the ‘Knowledge Translation’ (KT) supplier for CORE, the UK-based IDS. It brought together grantees, IDRC senior management, Regional Directors (RD), Program Officers (PO), and IDS staff, to share experiences and reflect on the successes and challenges of the CORE programme. It was framed around a central learning question: What are the key lessons to emerge from the IDRC experience of funding CORE as a responsive mechanism to provide innovative Southern-led policy and practice solutions in the context of a rapid onset and rapidly evolving global crisis?