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Relevant bibliographies by topics / Trusses. Strains and stresses

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Academic literature on the topic 'Trusses. Strains and stresses'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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Journal articles on the topic "Trusses. Strains and stresses"

1

Christoforo, André L., Giuliano A. Romanholo, Túlio H. Panzera, Paulo H. R. Borges, and Francisco A. R. Lahr. "Influence of stiffness in bolted connections in wooden plane structure of truss type." Engenharia Agrícola 31, no. 5 (October 2011): 998–1006. http://dx.doi.org/10.1590/s0100-69162011000500017.

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Trusses are structural systems commonly used in projects, being employed mainly in roof structures, present in most rural buildings. The design of trusses, as well as other structural systems, requires the determination of displacements, strains and stresses. However, the project is developed from an ideal model of calculation, considering free rotation between the elements of a connection. This paper presents a computer program for the analysis of bidimensional wooden trusses with connections formed with two screws per node. The formulation is based on the flexibility method, taking into account the influence of the effect of semi-rigid connections formed by two screws. An example of a structure is presented and analyzed by the program developed here, highlighting the importance of behavior analysis on semi-rigid connections.

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Slotta, Douglas J., Brian Tatting, Layne T. Watson, Zafer Gu¨rdal, and Samy Missoum. "Convergence analysis for cellular automata applied to truss design." Engineering Computations 19, no. 8 (December 1, 2002): 953–69. http://dx.doi.org/10.1108/02644400210450369.

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Traditional parallel methods for structural design, as well as modern preconditioned iterative linear solvers, do not scale well. This paper discusses the application of massively scalable cellular automata (CA) techniques to structural design, specifically trusses. There are two sets of CA rules, one used to propagate stresses and strains, and one to perform design updates. These rules can be applied serially, periodically, or concurrently, and Jacobi or Gauss‐Seidel style updating can be done. These options are compared with respect to convergence, speed, and stability for an example, problem of combined sizing and topology design of truss domain structures. The central theme of the paper is that the cellular automaton paradigm is tantamount to classical block Jacobi or block Gauss‐Seidel iteration, and consequently the performance of a cellular automaton can be rigorously analyzed and predicted.

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Tanasoglo, Anton, and Igor Garanzha. "Stress-strain state experimental researches of the lattice support pole sections for overhead power transmission line 110 kV." MATEC Web of Conferences 196 (2018): 02019. http://dx.doi.org/10.1051/matecconf/201819602019.

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An article compares the theoretical and experimental researches of joint work of steel tower type supports' fragments of overhead power transmission lines (OHPL) 110 kV. Attention is focused to high voltage supports operated on the Ukraine territory. Is described a spending principle of static experimental researches for flat trusses on the developed specialized experimental installation, allowing to investigate the joint work of overhead lines supports' fragments. Are presented the technique and results of the flat support model calculation in the "SCAD" software package. Are presented calculation numerical results of the experimental installation together with a testing model. Are determinated experimental values of stresses in lattice elements and also horizontal and vertical displacements of braces holding on nodes. During the displacements determining is analyzed the joint work of the lattice elements of the experimental samples, is taken into account the supporting effect of the extended braces.

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Lim, Teik Cheng. "A Negative Hygroscopic Expansion Material." Materials Science Forum 928 (August 2018): 277–82. http://dx.doi.org/10.4028/www.scientific.net/msf.928.277.

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A negative hygroscopic expansion (NHE) material contracts with the absorption of moisture. This paper introduces an NHE microstructure based on a truss-like lattice system that consists of two types of conventional materials, namely the apex and base rods connected by hinge joints. Based on the analytical model for volumetric strains, NHE is attainable by controlling the dimensions, coefficients of hygroscopic expansion and the changes in the hygroscopic concentration in the apex and base rods. For the special case where the apex rods are rigid, NHE is attainable if the apex-to-base rod length ratio is less than 0.707; if the apex-to-base rod length ratio is greater than 0.707, NHE is still attainable if the base rod’s hygroscopic strain is sufficiently large. NHE materials and structures are envisaged to play an important role for countering the effects of thermal expansion so as to decrease the extent of hygro-thermal stresses and/or strains. As such, further investigations on NHE materials are recommended to facilitate design principles that minimizes stress and/or strains in extreme hygro-thermal environment.

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Potrzeszcz-Sut, Beata, and Ewa Pabisek. "The analysis of stresses and displacements in the aluminium structure with replaceable elements." Budownictwo i Architektura 12, no. 1 (March 11, 2013): 275–82. http://dx.doi.org/10.35784/bud-arch.2210.

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The paper concerns the non-linear analysis of stresses and displacements in an aluminium truss tower. The Ramberg – Osgood material model was assumed. This model introduced power type relation between stresses and strains. In order to identify the inverse relation, a neural network was used. Because of the need to strengthen the tower, a number of aluminium bars was replaced by steel bars. The perfect elastic material model was assumed for the steel bars. The analysis of stresses and extreme displacements was performed during the cyclic loading and unloading of the system. Two global unloading processes were considered: elastic and elastic-plastic processes. The relationship between the load factor and deflection of the top of the tower is shown. Analysis was performed using a hybrid FEM/ANN program.

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Shutova, Marina, and Sergey Evtushenko. "APPLICATION OF A COMPLEX APPROACH FOR THE DETERMINATION OF THE RESIDUAL LIFE OF AN INDUSTRIAL BUILDING WITH DEFORMED SLING TRUSSES." Construction and Architecture 7, no. 3 (September 28, 2019): 30–35. http://dx.doi.org/10.29039/2308-0191-2019-7-3-30-35.

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The article is devoted to the problem of objective estimation of residual resource based on a complex approach using probabilistic methods and graph theory. A single-storey building of the industrial workshop in Taganrog was chosen as an object for evaluation. The survey revealed typical defects and damages for industrial buildings - soaking, weathering of the solution, corrosion and absence of paint coating, as well as atypical defects - cuts of mechanical nature in various elements of farms. These damages are stress concentrators, so a three-dimensional model of the sling truss with damage simulation was created to calculate the stress-strain state at such sites and a finite element model was calculated in the ANSYS. According to the calculation results, it was found that in the most loaded section with defect (reference brace) there are significant stresses close to the design resistance of the soil, which reduces the total probability of failure-free operation of the truss. The calculation of the probability of failure-free operation for the truss was carried out using probabilistic methods, the relative reliability of the rest of the structures was determined on the basis of external characteristics and inspection of the characteristics of the structures by non-destructive testing methods. It has been established that the residual life in the calculation by the combined method is 17.3 years.

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Flaga, Kazimierz, and Kazimierz Furtak. "Application of Composite Structures in Bridge Engineering. Problems of Construction Process and Strength Analysis." Civil And Environmental Engineering Reports 15, no. 4 (March 1, 2015): 57–85. http://dx.doi.org/10.1515/ceer-2014-0035.

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Abstract Steel-concrete composite structures have been used in bridge engineering from decades. This is due to rational utilisation of the strength properties of the two materials. At the same time, the reinforced concrete (or prestressed) deck slab is more favourable than the orthotropic steel plate used in steel bridges (higher mass, better vibration damping, longer life). The most commonly found in practice are composite girder bridges, particularly in highway bridges of small and medium spans, but the spans may reach over 200 m. In larger spans steel truss girders are applied. Bridge composite structures are also employed in cable-stayed bridge decks of the main girder spans of the order of 600, 800 m. The aim of the article is to present the cionstruction process and strength analysis problems concerning of this type of structures. Much attention is paid to the design and calculation of the shear connectors characteristic for the discussed objects. The authors focused mainly on the issues of single composite structures. The effect of assembly states on the stresses and strains in composite members are highlighted. A separate part of problems is devoted to the influence of rheological factors, i.e. concrete shrinkage and creep, as well as thermal factors on the stresses and strains and redistribution of internal forces.

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Cerruti, Lou M., and Peter Marti. "Staggered shear design of concrete beams: large-scale tests." Canadian Journal of Civil Engineering 14, no. 2 (April 1, 1987): 257–68. http://dx.doi.org/10.1139/l87-038.

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Two large-scale reinforced concrete I-beams were tested to failure. The principal difference between the two specimens was the angle of inclination selected for the diagonal compression field in the web. A 45° inclination was used for specimen CM1 whereas a 31° inclination was used for specimen CM2. The validity of the truss model approach used in design was confirmed by the observed behaviour of the specimens.Diagonal crushing limits given in the Canadian code CAN3-A23.3-M84 were found to be conservative. It is recommended to use these limits for uniformly stressed web regions when applying the staggering concept of shear design. For nonuniformly stressed regions it is proposed to investigate potential failure mechanisms assuming an effective compressive strength of the web concrete of [Formula: see text].Canadian code rules for determining longitudinal bar cutoff locations may be unconservative. To prevent the formation of premature collapse crack mechanisms, it is recommended to extend the bars beyond the theoretical cutoff points by at least one-half of the stirrup spacing. Key words: beams, concrete, deflection, deformation, design, failure, girders, limit design method, reinforcement, shear strength, shear tests, strains, stresses, tests.

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DiBattista, J. D., DEJ Adamson, and G. L. Kulak. "Evaluation of remaining fatigue life for riveted truss bridges." Canadian Journal of Civil Engineering 25, no. 4 (August 1, 1998): 678–91. http://dx.doi.org/10.1139/l98-011.

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The remaining fatigue life of riveted structures is a topic of considerable importance, particularly for owners of bridges. Improved methods for the estimation of the actual fatigue life of such structures are required in order to make their continued safe use possible while at the same time avoiding the expense of unnecessary repairs. To evaluate the fatigue life expectancy of a structural detail, it is necessary to obtain an accurate estimate of the stress history. Two analytical models are assessed through comparison with measured strains taken from a bridge in service. The results illustrate that a simple model with pinned connections is adequate for the determination of stresses in truss members and that more advanced analysis methods give only marginal increases in accuracy. Stresses in the floor system are most accurately predicted by a model that has full bending moment continuity between connected members. Standard and advanced methods of fatigue life evaluation are discussed and are then implemented in the evaluation of the remaining fatigue life for components of the bridge. Comparison with the actual fatigue life of the components, which were obtained from laboratory experiments, shows that both prediction methods give reasonable estimates of the fatigue life.Key words: bridge, fatigue, rivets, steel, model, analysis.

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Shin, Jinwon, Jineung Lee, Yongjae Lee, and Byungyun Kim. "Experimental and Numerical Investigation on Structural Performance of Steel Deck Plate Bolted with Truss Girder." Applied Sciences 9, no. 15 (August 4, 2019): 3166. http://dx.doi.org/10.3390/app9153166.

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This paper presents an experimental and numerical study to investigate the structural performance of a steel deck-plate system bolted with truss girder. This system has been proposed herein to resolve the issues caused by welding. Structural tests for six full-scale specimens were performed to ensure the structural safety of the proposed system based on design criteria for deflection. Local responses with an emphasis on the failure modes of the system were also assessed using the measured strains at the locations where stresses are localized. Numerical models for all test specimens were developed with the material test data and were validated based on the test results. The structural behaviors of the proposed system, not confirmed in the tests, were further examined using numerical simulations, with a focus on the failure mechanism between the numerical predictions and the test results.

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Dissertations / Theses on the topic "Trusses. Strains and stresses"

1

Tentor, Lawrence B. "Position and strain feedback control for shaping an active truss." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-03242009-040345/.

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Smith, Megan C. "An analysis of secondary stresses in steel parallel chord Pratt trusses." Manhattan, Kan. : Kansas State University, 2009. http://hdl.handle.net/2097/1399.

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Nagaraja, Srinidhi. "Microstructural Stresses and Strains Associated with Trabecular Bone Microdamage." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14093.

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Bone is a composite material consisting of hydroxyapatite crystals deposited in an oriented manner on a collagen backbone. The arrangement of the mineral and organic phases provides bone tissue with the appropriate strength, stiffness, and fracture resistance properties required to protect vital internal organs and maintain the shape of the body. A remarkable feature of bone is the ability to alter its properties and geometry in response to changes in the mechanical environment. However, in cases of metabolic bone diseases or aging, bone can no longer successfully adapt to its environment, increasing its fragility. To elucidate the mechanisms of bone microdamage, this research project developed a specimen-specific approach that integrated 3D imaging, histological damage labeling, image registration, and image-based finite element analysis to correlate microdamage events with microstructural stresses and strains under compressive loading conditions. By applying this novel method to different ages of bovine and human bone, we have shown that the local mechanical environment at microdamage initiation is altered with age. We have also shown that formation of microdamage is time-dependent and may have implications in age-related microdamage progression with cyclic and/or sustained static loading. The work presented in this dissertation is significant because it improved our understanding of trabecular bone microdamage initiation and unlocked exciting future research directions that may contribute to the development of therapies for fragility diseases such as osteoporosis.

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Junge, Michael Dominic Alexander. "Measurement of applied stresses using the polarization of Rayleigh surface waves." Thesis, Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04062004-164653/unrestricted/junge%5Fmichael%5Fd%5Fa%5F200312%5Fms.pdf.

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Thesis (M.S. in E.S.M.)--School of Civil and Environmental Engineering, Georgia Institute of Technology, 2004. Directed by Laurence Jacobs and Jianmin Qu.
Includes bibliographical references (leaves 113-117).

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5

Carroll, Travis S. "Predicted residual strength of damaged IsoTruss® structures /." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1157.pdf.

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Udakara, Deepthi De Silva. "Experimental study of a modified flat dilatometer under plane strain condition." Thesis, Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B22089007.

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Olasz, Lorant. "Residual Stresses and Strains in Cross-linked Polyethylene Power Cable Insulation." Doctoral thesis, Stockholm, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4020.

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Das, Yadunandan. "Characterization of stresses and strains involved in the martensitic phase transformations." Thesis, Open University, 2017. http://oro.open.ac.uk/49512/.

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Transformation-induced plasticity (TRIP) steels are an example of steels used in the automotive industry, where strain-induced martensitic transformations, associated plasticity and work hardening, enhance both the strength and ductility of the material. This has enhanced both the passenger safety (improved crash-performance) and fuel efficiency as less material is consumed (lighter structure). To gain insights into these strain-induced transformations, it is crucial to understand the impact the applied stress/strain on the martensitic transformation and how the resulting strain fields affect the further deformation and transformations. This PhD dissertation reports a series of experimental measurements on how the applied deformation affects strain-induced transformations, using three techniques, namely: electron backscatter diffraction (EBSD), high-resolution digital image correlation (HRDIC) and in situ neutron diffraction. It is shown here that applied stress favours the formation of strain-induced martensite in certain orientations of austenite. Crystallographic information gathered by EBSD and HRDIC indicates that the formation of martensite is governed by prior slip in the parent austenite. HRDIC measurements showed that strain heterogeneity is found not only between different grains within the microstructure, but even within individual austenite grains, suggesting that input parameters of macro stress strain properties are inadequate for variant selection models. EBSD, HRDIC and neutron diffraction measurements at ambient temperature confirm that the transformation is preceded by plastic deformation of the austenite crystal lattice and subsequent formation of nucleation sites. Here, it was shown that the intensity of those diffraction peaks from austenite grain families most affected by plastic deformation, decreased most due to martensitic transformation. Whereas, at the lower temperature deformation regimes, slip is suppressed, this is not the case. This dissertation illustrates how the above-mentioned techniques may be used to probe material phenomenon at various length scales, stress states and temperature regimes of interest.

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Kingston, Kristopher William. "Shear stresses under waves and currents." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25097.

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This study set out to investigate the shear stress behaviour at the bed under combined wave and current action. The intention of the study was to make experimental measurements to determine how wave and current shear stresses combine, so that theoretical models describing the combined flow condition could be proposed. Two types of experiment were conducted, and theoretical models for the combined flow were assessed. One set of experiments attempted to use a shear plate to make direct measurements of the combined flow shear stress, and of the shear stresses for the component waves and steady currents. This approach failed because the large correction terms introduced by the non-uniform wave pressure field could not be accurately estimated. The second set of experiments used a laser doppler anemometer to make detailed velocity profile measurements over flat sediment beds. The onset of sediment motion was used as a criterion to carefully control the experiments. It is assumed that the threshold of sediment motion represents a specific shear stress intensity at the bed for sediments of narrow size ranges. As the shear stresses can be determined from the velocity fields under waves and currents, their additive nature under combined flow conditions could be investigated. For each sediment size range, it is shown that the same maximum velocity very near the bed can be used to specify the threshold of sediment motion condition for all flow types, be they under waves, currents, or combined waves and currents. It is also shown that the near-bed velocity under a laboratory wave can be predicted accurately from second order wave theory and that the velocity under a current can be predicted from combining Manning's relation with the universal log velocity law. It is further shown that the near-bed velocity under a combined wave and current can be described by the vectorial addition of the maximum component wave velocity and the average component current velocity. The shear stress for the onset of motion is calculated for the steady current using Manning's relation, for the wave by combining the oscillatory shear stress formula with Kamphuis's rough turbulent friction factor relation, and for the combined wave and current by the simple vectorial addition of the component shear stresses, and is shown to be comparable with Shields's threshold criterion for nearly all conditions tested.
Applied Science, Faculty of
Civil Engineering, Department of
Graduate

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Kennedy, Kevin Francis. "A method for metal deformation and stress analysis in rolling." Connect to resource, 1986. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1261418472.

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Books on the topic "Trusses. Strains and stresses"

1

Archer, Robert R. Growth stresses and strains in trees. Berlin: Springer-Verlag, 1987.

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Archer, Robert R. Growth Stresses and Strains in Trees. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-662-02511-6.

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Choudhury, Dilara. Constitutional development in Bangladesh: Stresses and strains. Karachi: Oxford University Press, 1994.

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4

India at fifty: Facing stresses and strains. Jaipur: National Pub. House, 1999.

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Jost, G. S. Stresses and strains in a cold-worked annulus. Melbourne, Victoria, Australia: Aeronautical Research Laboratory, 1988.

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6

Chamis, C. C. Simplified composite micromechanics for predicting microstresses. [Washington, D.C.]: National Aeronautics and Space Administration, 1986.

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7

Mei, C. Multiple-mode nonlinear free and forced vibrations of beams using finite element method. Norfolk, Va: Old Dominion University Research Foundation, 1987.

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8

Elements of stress analysis. New York, NY: Cambridge University Press, 2008.

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Mei, C. Multiple-mode nonlinear free and forced vibrations of beams using finite element method. Norfolk, Va: Old Dominion University Research Foundation, 1987.

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10

Halford, Gary R. Calculation of thermomechanical fatigue life based on isothermal behavior. [Washington, DC]: National Aeronautics and Space Administration, 1987.

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Book chapters on the topic "Trusses. Strains and stresses"

1

Johnson, Anthony, and Keith Sherwin. "Stresses and strains." In Foundations of Mechanical Engineering, 157–76. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4899-7112-8_8.

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Krenk, Steen, and Jan Høgsberg. "Stresses and Strains." In Statics and Mechanics of Structures, 321–61. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6113-1_8.

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Das, Braja M. "Stresses and strains." In Advanced Soil Mechanics, 65–107. 5th edition. | Boca Raton : Taylor & Francis, a CRC title, part of the Taylor & Francis imprint, a member of the Taylor & Francis Group, the academic division of T&F Informa, plc, [2019]: CRC Press, 2019. http://dx.doi.org/10.1201/9781351215183-2.

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Singh, Dinesh Kumar. "Simple Stresses and Strains." In Strength of Materials, 1–52. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59667-5_1.

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Greenblatt, Milton. "Internal Dynamics: Stresses and Strains." In Anatomy of Psychiatric Administration, 109–44. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4757-9179-2_5.

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Fuchs, Maurice Bernard. "Applied Strains and Initial Stresses." In Structures and Their Analysis, 235–58. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-31081-7_13.

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Muvdi, B. B., and J. W. McNabb. "Torsional Stresses, Strains, and Rotations." In Engineering Mechanics of Materials, 159–97. New York, NY: Springer New York, 1991. http://dx.doi.org/10.1007/978-1-4612-3022-9_4.

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Čanađija, Marko. "Temperature-Dependent Thermoplasticity at Finite Strains." In Encyclopedia of Thermal Stresses, 4813–26. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-2739-7_666.

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Archer, Robert R. "An Introduction to Growth Stresses." In Growth Stresses and Strains in Trees, 1–15. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-662-02511-6_1.

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Caicedo, Bernardo. "Distribution of stresses and strains in roads." In Geotechnics of Roads: Fundamentals, 7–75. Leiden, The Netherlands : CRC Press/Balkema, [2019]: CRC Press, 2018. http://dx.doi.org/10.1201/9780429025914-2.

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Conference papers on the topic "Trusses. Strains and stresses"

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Lee, C., S. Lin, C. Lee, and S. Lin. "Residual stresses and strains in composite tubes." In 33rd Joint Propulsion Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1997. http://dx.doi.org/10.2514/6.1997-2722.

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Klein, Claude A. "Multilayered optical windows: strains, stresses, and curvature." In AeroSense '99, edited by Randal W. Tustison. SPIE, 1999. http://dx.doi.org/10.1117/12.354629.

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Nun˜ez, J. E., and G. Glinka. "Approximate Analysis of Creep Strains and Stresses at Notches." In ASME 2003 Pressure Vessels and Piping Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/pvp2003-1888.

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A method for the estimation of creep induced strains and stresses at notches has been developed. The purpose of the method is to generate a solution for the time-dependent strain and stress at the notch root based on the linear-elastic stress state, the constitutive law, and the material creep model. The proposed solution is an extension of Neuber’s rule used for the case of time-independent plasticity. The method was derived for both localized and non-localized creep in a notched body. Predictions were compared with finite element data and good agreement was obtained for various geometrical and material configurations in plane stress conditions.

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Kazeminia, Mehdi, and Abdel-Hakim Bouzid. "Analysis of Stresses and Strains in Packed Stuffing-Boxes." In ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-28570.

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Packed stuffing-boxes are mechanical sealing systems that are extensively used in pressurized valves and pumps. Yet there is no standard design procedure that could be used to verify their mechanical integrity and leak tightness. It is only recently that standard test procedures to qualify the packing material have been suggested for adoption in both North America and Europe. While the packing contact stress with the side walls is predictable using existing models there is no analytical methodology to verify the stresses and strains in the stuffing-box housing. This paper presents an analytical model that analyzes the stresses and strains of all the stuffing box components including the packing rings. The developed model will be validated both numerically using FEM and experimentally on an instrumented packed stuffing box rig that is specially designed to test the mechanical and leakage performance of different packing materials.

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Wahl-Wachendorf, xxx, Dirk Seidel, Thomas Solbach, and Martina Severin-Tölle. "691 Mental stresses and strains in construction sector employees." In 32nd Triennial Congress of the International Commission on Occupational Health (ICOH), Dublin, Ireland, 29th April to 4th May 2018. BMJ Publishing Group Ltd, 2018. http://dx.doi.org/10.1136/oemed-2018-icohabstracts.1672.

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Pedersen, Pauli. "Topology Optimization of 3D Trusses With Cost of Supports." In ASME 1993 Design Technical Conferences. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/detc1993-0369.

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Abstract The basic assumption for the present paper is the single load condition. In other aspects the stated problem is rather general and the important issue of local stability is taken into account. Even for this problem we can always find a statically determined topology that will minimize the cost of the structure. The constraints of the optimization problem are allowable stresses, with the allowable compressive stresses being design-dependent. Supports are treated as design variables, and cost of a possible support can be given within the same generality as cost of truss members. The formulation is given in terms of bar forces and a modified Simplex technique is developed for the numerical solution.

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Tan, Grace, and Anne Venables. "Survival Mode: The Stresses and Strains of Computing Curricula Review." In InSITE 2008: Informing Science + IT Education Conference. Informing Science Institute, 2008. http://dx.doi.org/10.28945/3195.

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In an ideal world, review and changes to computing curricula should be driven solely by academic concerns for the needs of students. The process should be informed by industry accreditation processes and international best practice (Hurst et al., 2001). However, Australian computing curricular review is often driven by the need for financial viability of programs with declining student numbers as much as concerns for academic merit. Worldwide there remains a strong job market and high demand for computing professionals (Liu, 2007; Melymuka, 2006), which predicates an impending IT workforce shortage. However, computing programs currently do not attract students due to perceived problems of the inadequacy of courses to prepare students sufficiently to cope with the practical challenges in current technologies adoption, to acquire strong communication skills and business aptitude (Taft, 2007), to foster problem solving skills, and to find the relevance of program contents to specific occupations. Therefore, computing curricula wishing to attract students need to have specialized studies that are of industrial strength that are updated regularly to reflect the progress in the discipline (Finkelstein & Hafner, 2002; Lui, 2007). Yet the challenge for universities is to weigh this need against preparing students to be universal and lifelong learners.

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Pham, Q. T., J. Paterson, A. McKellar, F. Olivia, and A. Le Bail. "STRESSES AND STRAINS IN THE FREEZING OF SPHERE SHAPED FOODS." In Annals of the Assembly for International Heat Transfer Conference 13. Begell House Inc., 2006. http://dx.doi.org/10.1615/ihtc13.p29.80.

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Lee, Ho Young, and Yuri M. Shkel. "Self-Sensing of Stresses and Strains Through the Dielectrostriction Effect in Composites." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-15727.

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Any dielectric material would vary its dielectric properties with deformation. By measuring these variations one could monitor stresses or strains with no mechanical interface with a load-bearing member. This effect, called dielectrostriction, can be formulated as a linear relation between the stress/strain and the dielectric response of a material. A planar capacitor on a rigid substrate is utilized to monitor the dielectrostriction effect. A rosette of such sensors can be located on the surface or embedded in the monitored part. A four-sensor rosette measures principal directions and difference of principal strains. Overall, this sensing technology shows a good potential for Non-Destructive Evaluation (NDE) and structural health monitoring of composite materials. This work provides theoretical background and experimental study of dielectrostriction response in polycarbonate, polyethylene, acrylic, and carbon nanotube composite materials.

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Rodriguez-Prada, Hector. "Improved Calculation of Casing Strains and Stresses in a Steam Injector Well Simulator." In SPE Latin America Petroleum Engineering Conference. Society of Petroleum Engineers, 1990. http://dx.doi.org/10.2118/21080-ms.

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Reports on the topic "Trusses. Strains and stresses"

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Bradford, John. Secondary stresses in bowstring timber trusses. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.3242.

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Burdick, L. J., and J. S. Barker. Strains and Stresses Near Explosions and Earthquakes. Fort Belvoir, VA: Defense Technical Information Center, October 1986. http://dx.doi.org/10.21236/ada181198.

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Djondjorov, Peter, Kostadin G. Kostadinov, and Georgi I. Stoilov. Modeling of Stresses and Strains in Cell Membranes Subjected to Micro-Injection. GIQ, 2012. http://dx.doi.org/10.7546/giq-12-2011-178-185.

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Genchev, Yancho, Nelly Staneva, and Desislava Hristodorova. Approach for Analysis of Strains and Stresses in an Upholstered Furniture Frame Using Finite Elements Based System. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, October 2018. http://dx.doi.org/10.7546/crabs.2018.10.12.

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Cook, W. A. Generalized finite strains, generalized stresses, and a hybrid variational principle for finite-element computer programs using curvilinear coordinates. Office of Scientific and Technical Information (OSTI), April 1989. http://dx.doi.org/10.2172/6288515.

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