Journal articles: 'Geodesic dome'

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Zu, Lei, Qin Xiang He, and Jun Ping Shi. "Semi-Geodesics-Based Dome Design for Filament Wound Composite Pressure Vessels." Applied Mechanics and Materials 275-277 (January 2013): 1601–4. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.1601.

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In this paper we apply semi-geodesic trajectories to the creation of isotensoid domes for filament wound pressure vessels. The governing equations for the determination of the meridian shapes and related winding angle distributions of domes are derived using the netting analysis and the semi-geodesic winding law. The effects of the slippage coefficient on the geometry and fiber trajectories of the domes are respectively evaluated in terms of the resulting meridional curves and fiber angles. It is revealed that the semi-geodesic angles and the dome depth have an overall decrease with increasing the slippage coefficient. The results also demonstrate that the use of semi-geodesics significantly enlarge the design space for the geometry and adapted fiber trajectories of the domes. The present method can provide a significant reference for the design and production of the domes for semi-geodesically overwound pressure vessels.

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Zu, Lei, Qin Xiang He, Jun Ping Shi, and Hui Li. "Non-Geodesic Trajectories for Filament Wound Composite Truncated Conical Domes." Applied Mechanics and Materials 281 (January 2013): 304–7. http://dx.doi.org/10.4028/www.scientific.net/amm.281.304.

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The goal of this paper is to present non-geodesic trajectories for filament wound truncated conical domes for pressure vessels. The fiber trajectories for non-geodesically overwound truncated conical shells are obtained based on differential geometry and the non-geodesic winding law. The influence of the slippage coefficient on non-geodesic trajectories is evaluated in terms of the winding angle distributions. The non-geodesic trajectories corresponding to various initial winding angles are also illustrated for the given slippage coefficient. The results show that the winding angle distribution of non-geodesics on a truncated conical dome has an overall increase with the increase of the slippage coefficient or the initial winding angle. The present method can provide a significant reference for developing non-geodesically overwound conical structures.

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Meilvin, Rivven, and Leo S. Tedianto. "ANALISIS PENGARUH PEMODELAN SAMBUNGAN TITIK BUHUL PADA STRUKTUR KUBAH GEODESIK." JMTS: Jurnal Mitra Teknik Sipil 4, no. 2 (May 31, 2021): 503. http://dx.doi.org/10.24912/jmts.v0i0.10725.

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The geodesic dome consists of steel rod elements joined together to form a single structure. Generally, these geodesic domes are analyzed by assuming the joints of the gusset points are joints and only receive axial forces on the rods. However, in reality, it is not easy to apply gusset joints as pure joints in construction. This research will analyze the geodesic dome by modeling the joints of the gusset points as joints where there is only axial force arising on the rods and modeling the rigid gusset points where there will also be moments and shear on the rods. The analysis will only be carried out by comparing the value of the displacement at each gusset joint modeling and checking the cross-sectional dimensions of the internal forces that arise with the help of the MIDAS GEN program in modeling the geodesic dome structure which has a diameter of 20000 mm and a height of 10000 mm with the type of steel profile. used is a pipe profile using two types of geodesic dome, namely type 2V and 3V. For loads that are calculated, namely dead load, live load, and wind load. The results showed a relatively small difference in translational displacement and the axial force was relatively the same in the internal force analysis, so it is better if the analysis by modeling the gusset connection as rigid.ABSTRAKKubah geodesik terdiri dari elemen batang baja yang disambung menjadi satu kesatuan struktur. Umumnya kubah geodesik ini dianalisis dengan menganggap sambungan titik buhulnya berupa sendi dan hanya menerima gaya aksial saja pada batang - batangnya. Namun pada kenyataannya untuk mengaplikasikan sambungan titik buhul sebagai sendi murni pada konstruksi tidaklah mudah. Penelitian ini akan menganalisis kubah geodesik dengan memodelkan sambungan titik buhulnya sebagai sendi dimana hanya ada gaya aksial saja yang timbul pada batang - batangnya dan memodelkan titik buhulnya rigid dimana akan terjadi juga momen dan geser pada batang tersebut. Analisis hanya akan dilakukan dengan membandingkan nilai dari perpindahan pada setiap pemodelan sambungan titik buhul dan pengecekan dimensi penampang terhadap gaya – gaya dalam yang timbul dengan bantuan program MIDAS GEN dalam memodelkan struktur kubah geodesik yang mempunyai diameter 20000 mm dan tinggi 10000 mm dengan jenis profil baja yang digunakan adalah profil pipa dengan menggunakan dua tipe kubah geodesik yaitu tipe 2V dan 3V. Untuk beban yang diperhitungkan yaitu beban mati, beban hidup, dan beban angin. Hasil penelitian menunjukkan nilai perbedaan yang relatif kecil pada perpindahan translasi dan diperoleh gaya aksial yang relatif sama pada analisis gaya dalam yang timbul, sehingga sebaiknya analisis dengan pemodelan sambungan titik buhul sebagai rigid.

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Pilarska, Dominika. "Octahedron-based spatial bar structures - the form of large areas covers." MATEC Web of Conferences 174 (2018): 03007. http://dx.doi.org/10.1051/matecconf/201817403007.

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The large areas covers may be designed as the spatial dome constructions where the basis of their shaping are regular polyhedra. The paper presents eight new designed spatial bar structures as geodetic domes with a span of 50 m. The basis of their shaping is the regular octahedron. This polyhedron has not been recognized in detail as the basis for geodesic domes designing. Using second method of the division of the initial equilateral triangle proposed by professor Fuliński, bar domes generated from 2904-hedron, 3456-hedron, 4056-hedron, 4704-hedron, 5400-hedron, 6144-hedron, 6936-hedron and 7776-hedron were obtained. The designed eight bar structures were subjected to thorough geometric and static analysis showing the behaviour of the geodesic bar domes generated according to the presented in the paper method of the division of original face of regular octahedron. Own formulas were developed to determine the number of nodes and bars. The designed eight bar systems in the form of geodesic domes, which the basis of shaping is regular octahedron can be used as the covers of large areas without the necessity of the internal supports usage.

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Pilarska, Dominika, and Tomasz Maleska. "Numerical Analysis of Steel Geodesic Dome under Seismic Excitations." Materials 14, no. 16 (August 10, 2021): 4493. http://dx.doi.org/10.3390/ma14164493.

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The paper presents the response of two geodesic domes under seismic excitations. The structures subjected to seismic analysis were created by two different methods of subdividing spherical triangles (the original octahedron face), as proposed by Fuliński. These structures are characterised by the similar number of elements. The structures are made of steel, which is a material that undoubtedly gives lightness to structures and allows large spans. Designing steel domes is currently a challenge for constructors, as well as architects, who take into account their aesthetic considerations. The analysis was carried out using the finite element method of the numerical program. The two designed domes were analysed using four different seismic excitations. The analysis shows what influence particular earthquakes have on the geodesic dome structures by two different methods. The study analysed the maximum displacements, axial forces, velocities, and accelerations of the designed domes. In addition, the Time History method was used for the analysis, which enabled the analysis of the structure in the time domain. The study will be helpful in designing new structures in seismic areas and in assessing the strength of various geodesic dome structures under seismic excitation.

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Shea, Kristina, and Jonathan Cagan. "Innovative dome design: Applying geodesic patterns with shape annealing." Artificial Intelligence for Engineering Design, Analysis and Manufacturing 11, no. 5 (November 1997): 379–94. http://dx.doi.org/10.1017/s0890060400003310.

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AbstractShape annealing, a computational design method applied to structural design, has been extended to the design of traditional and innovative three-dimensional domes that incorporate the design goals of efficiency, economy, utility, and elegance. In contrast to deterministic structural optimization methods, shape annealing, a stochastic method, uses lateral exploration to generate multiple designs of similar quality that form a structural language of solutions. Structural languages can serve to enhance designer creativity by presenting multiple, spatially innovative, yet functional design solutions while also providing insight into the interaction between structural form and the trade-offs involved in multi-objective design. The style of the structures within a language is a product of the shape grammar that defines the allowable structural forms and the optimization model that provides a functional measure of the generated forms to determine the desirable designs. This paper presents an application of geodesic dome patterns that have been embodied in a shape grammar to define a structural language of domes. Within this language of domes, different dome styles are generated by changing the optimization model for dome design to include the design goals of maximum enclosure space, minimum surface area, minimum number of distinct cross-sectional areas, and visual uniformity. The strengths of the method that will be shown are 1) the generation of both conventional domes similar to shape optimization results and spatially innovative domes, 2) the generation of design alternatives within a defined design style, and 3) the generation of different design styles by modifying the language semantics provided by the optimization model.

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Regester, Jeff, and Courtney McGahee. "A PVC Geodesic Dome Planetarium." Physics Teacher 57, no. 9 (December 2019): 582–85. http://dx.doi.org/10.1119/1.5135781.

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Pavlov, G. N. "Geodesic Domes Bounded by Symmetrical Mainly Hexagonal Elements." International Journal of Space Structures 9, no. 2 (June 1994): 53–66. http://dx.doi.org/10.1177/026635119400900201.

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Geodesic cutting of the “B” system, published by the author [1, 2] has one drawback, namely the existence of asymmetric elements and their mirror counterparts, which considerably increase the number of types of prefabricated members employed in dome structures. We consider here the system of subdivision where by means of assumption of a small number of types of non-plane elements it is possible to eliminate the asymmetric elements. The geometry of such cutting, called the “O” system, is very convenient for practical dome design. The author has designed and constructed many domes based on this system.

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Fernández-Serrano, Martino Peña, and José Calvo López. "Projecting Stars, Triangles and Concrete." Architectura 47, no. 1-2 (July 24, 2019): 92–114. http://dx.doi.org/10.1515/atc-2017-0006.

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AbstractSometimes scientific-technical objects can be given an extended meaning as cultural icons and be received in art and architecture. To this end, the object must be detached from its original context and viewed from different, new perspectives.In 1922 Walter Bauersfeld constructed one of the first geodesic domes for testing projection devices in Jena. Walter Gropius and Lázló Moholy-Nagy were among the first to visit the Jena Planetarium; Moholy-Nagy received the dome in his book ›Von Material zu Architektur‹. Richard Buckminster Fuller further developed Bauersfeld’s concept from the 1940s and patented the construction principle of a geodesic dome under the name ›Building Construction‹ in 1954. His patent bears resemblances to the Bauersfeld Planetarium in Jena, which can be demonstrated by manuscripts by Bauersfeld from the Zeiss Archive in Jena. Fuller, on the other hand, also used the geodesic dome to explain his theory as Synergetic. The article traces the transformation of the technical object conceived by Bauersfeld via Moholy-Nagy and Fuller into a cultural icon of the 20th century.

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Gilodo, A. Y., V. P. Kovtun, A. N. Arsirii, and A. A. Angel. "EFFECTIVE STRUCTURE OF A WOODEN RESIDENTIAL BUILDING IN THE FORM OF A GEODESIC DOME WITH A UNIVERSAL CONNECTOR." Bulletin of Odessa State Academy of Civil Engineering and Architecture, no. 82 (March 4, 2021): 19–26. http://dx.doi.org/10.31650/2415-377x-2021-82-19-26.

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Abstract. Since the middle of the twentieth century, a new architectural solution has been spherical shells broken down into elements by geodesic lines – circles with radii equal to the radius of the sphere. A geodesic dome is a dome made of a spherical polyhedron with an optimally distributed arrangement of vertices and edges tending to a perfect sphere. Using the technical capabilities of computer design, digital models of the layout and calculation of geodesic domes became available. It is possible not only to calculate multi-mesh network layouts with high accuracy, but also to automate the design. At the same time, it cannot be said that the optimal system has already been obtained and studied. The issues of optimal shaping, taking into account a simple universal connector and confirmation of theoretical results by field tests, remain not fully studied. Development of the design of a mesh wooden house in the form of a geo dome with optimal parameters of the geodetic network and nodal connections of the frame elements using a universal connector is the theme of this publication. The proposed form of division is a fullerene polyhedron describing a sphere and consisting of five and hexagonal faces. The dome polyhedron is built on the basis of the icosahedron. The number of partitions of vertices and edges that make up the split edge ‒ the frequency, is chosen equal to 3. The first class of partitioning by the "equal chords" method is adopted. The proposed universal connector for connecting parts of building structures at any angle and a method of mounting building structures using a universal connector. As a result of introduction of new technical decisions we receive essential simplification of a design, reduction of quantity of its components, at the same time increase of its manufacturability and providing an opportunity to connect details of building designs in an end face at any angle.

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O.Y., Hilodo, Arsiriy A.M., Korshak О.М., Kovtun V.P., and Kitaiev A.A. "TEST OF A NET DOME FRAGMENT." Modern structures of metal and wood, no. 25 (August 2021): 21–26. http://dx.doi.org/10.31650/2707-3068-2021-25-21-26.

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A geodesic or net dome, also known as a Fuller’s dome, is a spherical structure. Geodesic domes are well receptive to asymmetric loads, especially snow and wind, have high aerodynamics, increased rigidity and stability. It should be noted that the larger the diameter of the sphere, the greater its bearing capacity, and the strength of such dome slightly depends on the building materials used. With significant advantages, the design and construction of wooden net domes has not become widespread. The fact is that net domes are spatial structures with a large number of elements, which accordingly entails a large number of nodes. The elements of the dome are connected with dowels, wet film gauge, bolts, wood screws, staples, screws, nails. Adhesive connections on washers are used, also steel clamps, straps, overlays are applied. However, they all have disadvantages, the scope of each connector is different, and their cost is often comparable to the cost of the dome elements. We offer a universal connector for connecting dome parts at any angle. As a result of introduction of such technical decision of knot, we receive essential simplification of a design, reduction of quantity of components, at the same time with increase of its manufacturability. To study the operation of the joint of wooden glue-board elements of the dome with the use of a universal connector, its experimental studies were carried out. The purpose of the study: to study the actual operation of the connection of wooden parts of the dome with a universal connector in the form of rotating fasteners that rotate freely on the draw bolt, to assess its strength and deformability, to assess the possibility of using such a connection in the design of spatial structures. To solve the tasks, a full-scale fragment of the dome was tested, which includes characteristic nodes with rigid adjacency of elements to each other.

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Zhou, Ji, Jianqiao Chen, Yaochen Zheng, Zhu Wang, and Qunli An. "Dome shape optimization of filament-wound composite pressure vessels based on hyperelliptic functions considering both geodesic and non-geodesic winding patterns." Journal of Composite Materials 51, no. 14 (November 13, 2016): 1961–69. http://dx.doi.org/10.1177/0021998316662512.

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Filament-wound composite pressure vessels, owing to the advantages of their high specific strength, specific modulus and fatigue resistance, as well as excellent design performance, have been widely used in energy engineering, chemical industry and other fields. A filament-wound composite pressure vessel generally consists of two parts, a cylindrical drum part and the dome parts. In the cylindrical drum part, the filament winding angle and the winding layer thickness can be easily determined due to the regular shape. In the dome parts, however, both the winding angle and the thickness vary along the meridian line. Performance of the dome parts, which strongly depends on the effect of end-opening and the winding mode, dominates the performance of a pressure vessel. In this paper, optimum design of the dome parts is studied by considering both geodesic winding and non-geodesic winding patterns. A hyperelliptic function is adopted as the basis function for describing the meridian of the dome shape. The dome contour is optimized by taking the shape factor (S.F.) as the objective and parameters in the basis function as the design variables. A specific composite pressure vessel is taken as the numerical analysis example with varying dome shape which is to be optimized. The optimum design solution is obtained through the particle swarm optimization algorithm. It shows that an optimized dome with non-geodesic winding has better S.F. as compared with geodesic winding. Influences of the slippage coefficient and the polar opening on the S.F. are also discussed.

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Barbieri, Nilson, Roberto D., Lucas S.V., Key F., and Diego Rossota. "Dynamic Behavior of the Geodesic Dome Joints." International Journal of Computer Applications 140, no. 6 (April 15, 2016): 40–44. http://dx.doi.org/10.5120/ijca2016909346.

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Meek, J. L., and S. Loganathan. "Theoretical and Experimental Investigation of a Shallow Geodesic Dome." International Journal of Space Structures 4, no. 2 (June 1989): 89–105. http://dx.doi.org/10.1177/026635118900400203.

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This paper presents the nonlinear analytical and experimental study of a shallow geodesic dome comprising thin walled circular hollow sections where the large displacement theory is applicable. The numerical formulation is based on the updated Lagrangian method incorporating geometric and material nonlinearities. The strain unloading is included in the present numerical analysis. Warping effects are ignored. A 156-member shallow geodesic dome that has a rise to span ratio of 1:10 (i.e., a rise of 600 mm to span of 6000 mm) was constructed and tested experimentally to validate the proposed numerical method. The analytical nonlinear analysis of this dome compares well with the experimental results. Both results show a considerable difference with the large displacement analysis in which the material nonlinearity is not considered.

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Nieboer, Miranda, and Craig William McCormack. "Under geodesic skies; a cultural perspective on the former South Pole Dome and geodesic domes in outer space." Polar Journal 7, no. 2 (July 3, 2017): 351–73. http://dx.doi.org/10.1080/2154896x.2017.1373914.

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MIURA, Makoto. "EXAMINATION OF WOODEN GEODESIC DOME USING JAPANESE STEREOTOMY." AIJ Journal of Technology and Design 15, no. 29 (2009): 27–30. http://dx.doi.org/10.3130/aijt.15.27.

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Goswami, D. Y., A. Lavania, S. Shahbazi, and M. Masood. "ANALYSIS OF A GEODESIC DOME SOLAR FRUIT DRYER." Drying Technology 9, no. 3 (June 1991): 677–91. http://dx.doi.org/10.1080/07373939108916703.

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Porta-Gándara, M. A., and V. Gómez-Muñoz. "Solar performance of an electrochromic geodesic dome roof." Energy 30, no. 13 (October 2005): 2474–86. http://dx.doi.org/10.1016/j.energy.2004.12.001.

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Zhivotov, Dmitry, and Olga Pastukh. "Construction of geodesic domes made of wood and composite materials during restoration and conservation of cultural heritage objects." E3S Web of Conferences 164 (2020): 02020. http://dx.doi.org/10.1051/e3sconf/202016402020.

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The paper provides an overview of the existing structural and technological solutions for the construction of outdoor shelters over cultural heritage objects during restoration works in order to preserve from environmental influences and prevent external precipitation from entering buildings and structures. For these purposes, it is proposed to use standard solutions for various spans in the form of geodetic dome structures to protect buildings and structures from external precipitation and other atmospheric phenomena. The paper highlights the authors' work on the creation of new technical solutions for geodesic domes made of wood and high-strength polymers, which will significantly facilitate load-bearing structures, compared to metal and reinforced concrete. Also, the use of modern materials and technologies for the construction of protective structures will allow taking care of the environment, taking into account GREEN and ZOOM standards.

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Kanaev, Egor, Daria Demidova, and Sergey Zimin. "Accounting for the flexibility of nodes in the design of steel mesh dome." MATEC Web of Conferences 245 (2018): 08006. http://dx.doi.org/10.1051/matecconf/201824508006.

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This paper presents the results of a study of the stress-strain state of a geodesic dome covering the planetarium designed in the city of Nizhny Novgorod. Four design schemes were created in the SCAD with different types of node modeling. A comparative analysis of the effect of the strain capacity of the “BrGTU” type unit on the stress-strain state of the dome cover has been carried out. The results are obtained on the change in the displacements of the structure nodes and internal forces in the dome bars, with rigid and hinged mates. The option of increasing the diameter of high-strength bolts to reduce the overall deformability of the system is considered. On the basis of the obtained results, it was concluded that it is necessary to take into account the strain capacity of the semirigid connections when designing mesh steel domes.

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GOGOLEVA, Natalia A. "TECTONICS OF CRYSTAL DOMES AND COVERS AND FACTORS DEFINING THEIR VOLUME AND SPACE COMPOSITION." Urban construction and architecture 8, no. 3 (September 15, 2018): 73–77. http://dx.doi.org/10.17673/vestnik.2018.03.15.

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The article provides a brief history of the geodesic crystal dome structures. A set of factors that are determining conditions in the formation of the tectonics of the volume-spatial composition of dome structures is considered. The issues of plastic processing and plastic expressiveness of dome structures with diff erent structural scheme of the geometric breakdown of the surface are considered. A comprehensive assessment of the initial design conditions and the consideration of formative factors allowing the creation of expressive volume-spatial compositions of structures of various functional purposes using crystal dome shells are given.

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Wester, Ture. "A Geodesic Dome-Type Based on Pure Plate Action." International Journal of Space Structures 5, no. 3-4 (September 1990): 155–67. http://dx.doi.org/10.1177/026635119000500302.

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Florez, Frank, Pedro Fernández de Cordoba, John Taborda, Miguel Polo, Juan Carlos Castro-Palacio, and María Jezabel Pérez-Quiles. "Sliding Modes Control for Heat Transfer in Geodesic Domes." Mathematics 8, no. 6 (June 3, 2020): 902. http://dx.doi.org/10.3390/math8060902.

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The analysis and modeling of unconventional thermal zones is a first step for the inclusion of low-cost spaces and for the assessment of the environmental impact among areas of human use in warm climates. In this paper, the heat transfer in a geodesic dome located at the University of Magdalena (Colombia) is modeled and simulated. The simulator is calibrated against experimental measurements and used to study the effect of different loads which are regulated by a controller in sliding modes explicitly designed for this case. The closed-loop system is used together with ASHRAE Standard 55 to characterize comfort conditions within the dome and the effect on the overall thermal sensation with increasing the number of occupants.

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Skejić, Davor, Anamarija Alagušić, Gabrijela Hrg, Marija Lokin, and Domagoj Damjanović. "Analysis of prefabricated steel dome nodal connection behaviour." Journal of the Croatian Association of Civil Engineers 71, no. 2 (March 13, 2019): 85–93. http://dx.doi.org/10.14256/jce.2464.2018.

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The behaviour of a steel geodesic dome node, optimised from the aspect of its assembly, is characterized in the paper. It is an overlap connection with one bolt, where tubular members are flattened and additionally bent to obtain the required dome configuration. Results obtained by means of original laboratory testing and numerical analyses are compared with analytic values determined via simplified expressions for calculation of cross sectional resistance, i.e. govern failure mode. A structural solution is recommended in order to improve this dome connection behaviour and optimise the structure as a whole.

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Wang, Duo Zhi, Feng Fan, Xu Dong Zhi, and Jun Wu Dai. "Impact Response and Failure Mode for Single-Layer Geodesic Spherical Domes under Impact Load." Applied Mechanics and Materials 351-352 (August 2013): 80–84. http://dx.doi.org/10.4028/www.scientific.net/amm.351-352.80.

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Based on the ANSYS/LS-DYNA software, the analysis for the 40m span geodesic spherical domes under impact load is carried out. By changing the mass of impact object, impact velocity and impact location, the parametric analyses on the dynamic response of the structures under the impact loading are carried out. The three failure modes of the spherical domes are summed up: local dent of structure and global collapse of structure, Punch failure of structure. Then the characteristics of the dynamic response of the structure with different failure mode, such as the impact course, impact load, speed of nodes, displacement of nodes, and stress of bars, are investigated. It is further improvement of failure mode for single-layer reticulated dome under impact.

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YAMADA, Ryota, and Nariyuki KAWABATA. "Consideration for deployment mechanism realization of the geodesic dome structure." Proceedings of Mechanical Engineering Congress, Japan 2019 (2019): S11402. http://dx.doi.org/10.1299/jsmemecj.2019.s11402.

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Šiber, Antonio. "Icosadeltahedral Geometry of Geodesic Domes, Fullerenes and Viruses: A Tutorial on the T-Number." Symmetry 12, no. 4 (April 4, 2020): 556. http://dx.doi.org/10.3390/sym12040556.

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The Caspar–Klug (CK) classification of viruses is discussed by parallel examination of geometry of icosahedral geodesic domes, fullerenes, and viruses. The underlying symmetry of all structures is explained and thoroughly visually represented. Euler’s theorem on polyhedra is used to calculate the number of vertices, edges, and faces in domes, number of atoms, bonds, and pentagonal and hexagonal rings in fullerenes, and number of proteins and protein–protein contacts in viruses. The T-number, the characteristic for the CK classification, is defined and discussed. The superposition of fullerene and dome designs is used to obtain a representation of a CK virus with all the proteins indicated. Some modifications of the CK classifications are sketched, including elongation of the CK blueprint, fusion of two CK blueprints, dodecahedral view of the CK shapes, and generalized CK designs without a clearly visible geometry of the icosahedron. These are compared to cases of existing viruses.

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Florez, Frank, Pedro Fernández-de-Córdoba, John Taborda, Juan Carlos Castro-Palacio, José Luis Higón-Calvet, and M. Jezabel Pérez-Quiles. "Passive Strategies to Improve the Comfort Conditions in a Geodesic Dome." Mathematics 9, no. 6 (March 20, 2021): 663. http://dx.doi.org/10.3390/math9060663.

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Non-conventional thermal zones are low-cost and ecology friendly alternatives to the housing needs of populations in various situations, such as surviving natural disasters or addressing homelessness. However, it is necessary to guarantee thermal comfort for occupants, while aiming to minimize energy consumption and wastage in refrigeration systems. To reduce the cooling requirements in non-conventional thermal zones it is necessary to model the structure and analyze the principal factors contributing to internal temperature. In this paper, a geodesic dome is modellingusing the lumped parameter technique. This structure is composed of a wooden skeleton and wooden floor, with a canvas surface as its exterior. The mathematical model was tuned using experimental data, and its parameters were classified using Monte Carlo sensitivity analysis. The mathematical model was used to evaluate the impact on internal temperature and occupants’ comfort when two strategies are considered. The results obtained indicatee internal temperature reductions down to a range of 7% to 11%; this result is reflected directly in the energy used to refrigerate the thermal zone, contributing to the objective of providing houses with lower energy consumption.

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Akhtar, Muhammad Kaleem, Waqar Ahmad Qureshi, Rehan Jamshed, and Mohsin Raza. "Analytical modeling and numerical analysis of the effect of mosaic patterns on composite pressure vessels with dome." Journal of Reinforced Plastics and Composites 40, no. 17-18 (February 10, 2021): 621–31. http://dx.doi.org/10.1177/0731684421994326.

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The aim of this work is to provide an analytical tool and numerical analysis for the optimum design of composite pressure vessels with the dome, incorporating triangular mosaic patterns. This article presents the analytical modeling involving kinematic constraints based on geodesic trajectory: the helical angle and dome thickness. The structural analysis is performed using a commercial finite element analysis tool. The results show that this new analytical method gives more accurate dome thickness than cubic spline function and Gramoll and Namiki’s methods. The incorporation of mosaic patterns based on winding kinematics provides more realistic modeling of the real stress distribution and the stress values compared to the vessel without mosaic patterns and vessels with mosaic patterns based on nongeodesic trajectories. The results have been validated and are quite promising with regard to better accuracy and safety.

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Pastukh, Olga, Dmitrii Zhivotov, Andrey Vaitens, and Leonid Yablonskii. "The use of modern polymer materials and wood in the construction of buildings in the form of geodesic domes." E3S Web of Conferences 274 (2021): 01024. http://dx.doi.org/10.1051/e3sconf/202127401024.

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Spherical structures have been used by mankind since time immemorial in religious and public buildings, as well as in engineering structures. With the development of lightweight design and construction, non-standard architectural and planning solutions are used. More and more frequently they are being successfully implemented in private home projects and becoming a fact of everyday life. This may be explained by certain advantages of the form, as well as by the opportunities offered to the construction industry by the age of new materials and technologies for the works performance. The functional and architectural-structural design of round-shaped buildings in the form of geodesic domes will allow creating comfortable, cost-effective, energy-efficient and environmentally expedient conditions for human habitation taking into account the shortage of land areas and increased demand for alternative housing options due to the environmental situation around the world. This article analyzes the experience of building spherical buildings of different types and scales. The authors present the results of research carried out in the field of the geodesic dome design improvement with the use of wood and polymer materials.

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Entcheva, Emilia, and Harold Bien. "Mechanical and spatial determinants of cytoskeletal geodesic dome formation in cardiac fibroblasts." Integrative Biology 1, no. 2 (2009): 212. http://dx.doi.org/10.1039/b818874b.

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YAMADA, Ryota, and Nariyuki KAWABATA. "Analysis model construction and numerical structure analysis of Expanded type geodesic dome." Proceedings of Conference of Chugoku-Shikoku Branch 2018.56 (2018): 914. http://dx.doi.org/10.1299/jsmecs.2018.56.914.

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V. K. Dogra, V. K. Dogra. "Step-By-Step Method Of Fabrication And Erection Of Geodesic Dome From A4 Size Waste Papers." Indian Journal of Applied Research 1, no. 3 (October 1, 2011): 20–21. http://dx.doi.org/10.15373/2249555x/dec2011/8.

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Soleimani, Zohreh, John Calautit, and Ben Hughes. "Computational Analysis of Natural Ventilation Flows in Geodesic Dome Building in Hot Climates." Computation 4, no. 3 (August 17, 2016): 31. http://dx.doi.org/10.3390/computation4030031.

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Ansems, Ronald B. M., and Lawrence T. Scott. "Circumtrindene: A Geodesic Dome of Molecular Dimensions. Rational Synthesis of 60 of C601." Journal of the American Chemical Society 122, no. 12 (March 2000): 2719–24. http://dx.doi.org/10.1021/ja993028n.

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Chu, Hsiao-Yun. "The Evolution of the Fuller Geodesic Dome: From Black Mountain to Drop City." Design and Culture 10, no. 2 (May 4, 2018): 121–37. http://dx.doi.org/10.1080/17547075.2018.1466228.

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Pokusiński, B., and M. Kamiński. "Various Response Functions in Lattice Domes Reliability Via Analytical Integration and Finite Element Method." International Journal of Applied Mechanics and Engineering 23, no. 2 (May 1, 2018): 445–69. http://dx.doi.org/10.2478/ijame-2018-0026.

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Abstract The main aim of this work is to verify an influence of the response function type in direct symbolic derivation of the probabilistic moments and coefficients of the structural state variables of axisymmetric spherical steel dome structures. The second purpose is to compare four various types of domes (ribbed, Schwedler, geodesic as well as diamatic) in the context of time-independent reliability assessment in the presence of an uncertainty in the structural steel Young modulus. We have considered various analytical response functions to approximate fundamental eigenfrequencies, critical load multiplier, global extreme vertical and horizontal displacements as well as local deformations. Particular values of the reliability indices calculated here can be of further assistance in the reliability assessment by comparing the minimal one with its counterpart given in the Eurocode depending upon the durability class, reference period and the given limit state type.

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Zabojszcza, Pawel, and Urszula Radon. "Effect of Increased Density of Nodes in Geodesic Dome on its Critical Load Capacity." IOP Conference Series: Materials Science and Engineering 471 (February 23, 2019): 052051. http://dx.doi.org/10.1088/1757-899x/471/5/052051.

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Ghorbanzadeh, Maryam. "How to build a geodesic dome An overview and introduction for construction of geodesic domes in a simple word in addition with studding a case and designing a Research Center with this structure." Current World Environment 11, Special Issue 1(2016) (July 25, 2016): 54–65. http://dx.doi.org/10.12944/cwe.11.special-issue1.08.

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YOSHIZAWA, Nozomu, Hirotaka SUZUKI, and Naoya HARA. "Applying the Geodesic Dome to Daylight Simulation-the Activities on the Daylight Simulation Working Group in Japan-." Journal of Light & Visual Environment 32, no. 1 (2008): 46–50. http://dx.doi.org/10.2150/jlve.32.46.

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Arnone, John A., and Daniel Obrist. "A large daylight geodesic dome for quantification of whole-ecosystem CO2 and water vapour fluxes in arid shrublands." Journal of Arid Environments 55, no. 4 (December 2003): 629–43. http://dx.doi.org/10.1016/s0140-1963(02)00291-4.

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Dalvesco, Rebecca. "R. Buckminster Fuller, the Expo ’67 Pavilion and the Atoms for Peace Program." Leonardo 50, no. 5 (October 2017): 486–92. http://dx.doi.org/10.1162/leon_a_01157.

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Since the end of World War II, the U.S. government has embraced the rhetoric of the peaceful use of the atom. Following the government’s lead, architect-designer-philosopher Richard Buckminster Fuller espoused similar ideas. Like U.S. President Lyndon Johnson and other “atoms for peace” enthusiasts, Fuller thought that the revolution then occurring in architecture was an outgrowth of the peaceful atom. And, like Johnson, Fuller believed that technology based on the atom did not just favor Americans but could be applied for the benefit of all humanity. Fuller thought atomic technology could help extend humankind’s knowledge base and thus be applied to develop better architecture. This article explains how Fuller, like politicians of the time, believed that the potential for fearful products of destruction—of war and its weaponry—could be applied for peacetime applications, particularly when designing his geodesic dome, including his Expo ’67 pavilion.

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Miller, Claudia S. "White Paper: Chemical Sensitivity: History and Phenomenology." Toxicology and Industrial Health 10, no. 4-5 (July 1994): 253–76. http://dx.doi.org/10.1177/074823379401000501.

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Nearly everyone has heard something about chemical sensitivity, either from personal experience with someone who has the condition or from the media. The television series Northern Exposure recently featured a chemically sensitive attorney who lived in a geodesic dome in Alaska, and L.A. Law depicted the struggles of a Persian Gulf veteran with chemical sensitivities who lost his case against the Veterans Administration, but may appeal later in the season. Television news programs and the printed media have showcased patients living spartan existences in remote areas or in aluminum foil-lined rooms. Our views of the illness no doubt are colored by our own personal experiences of it. While some discount or make jokes about chemical sensitivity or these patients, physicians who have seen a number of them are discovering that many appear to be credible individuals with prior good work records who say they became ill following an identifiable exposure to chemicals.

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Skrydstrup, Martin. "Of spheres and squares: Can Sloterdijk help us rethink the architecture of climate science?" Social Studies of Science 46, no. 6 (July 8, 2016): 854–76. http://dx.doi.org/10.1177/0306312716647214.

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This article explores how different visions and values of science translate into different architectural shapes. I bring Peter Sloterdijk’s ‘spherology’ to bear on my ethnographic fieldwork at the NEEM ice core base in Greenland, a significant node in the global infrastructure of climate science. I argue that the visual form of the geodesic dome of the camp materializes specific values and visions of this branch of paleoclimate science, which I elaborate vis-a-vis the pragmatic claims of the scientists/designers and the particular architectural history of Danish ice core drilling in Greenland. I argue that this aesthetic history articulates with Buckminster Fuller’s ideas of a ‘new nature’ and ‘scalar connections’ encapsulated in his geodesic form. Second, I argue that the aesthetic production of space in the camp replicates the modern distinction between science and society, in so far as the lab space is rectangular and the recreational space is spherical. Third, I argue that NEEM scientists and Sloterdijk are essentially engaged in a common project: the scientists work hard to align air bubbles in the cores with atmospheric fluctuations in the hemisphere on the evidentiary terrain of ice, and Sloterdijk attempts to connect micro-uteri with macro-uteri in an attempt to fundamentally rethink space. Fuller’s notion of ‘Spaceship Earth’, appropriated by Sloterdijk in his thinking about anthropogenic climate change, lends itself well to capturing the scalar alignments and the isolated NEEM base – on a mission to save planet Earth. In conclusion, I argue that Sloterdijk’s spherology may serve as a point of departure for rethinking the aesthetic grammar of the architecture of science.

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Inui, Masatomo, Hidekazu Kamei, and Nobuyuki Umezu. "Automatic detection of the optimal ejecting direction based on a discrete Gauss map." Journal of Computational Design and Engineering 1, no. 1 (January 1, 2014): 48–54. http://dx.doi.org/10.7315/jcde.2014.005.

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Abstract In this paper, the authors propose a system for assisting mold designers of plastic parts. With a CAD model of a part, the system automatically determines the optimal ejecting direction of the part with minimum undercuts. Since plastic parts are generally very thin, many rib features are placed on the inner side of the part to give sufficient structural strength. Our system extracts the rib features from the CAD model of the part, and determines the possible ejecting directions based on the geometric properties of the features. The system then selects the optimal direction with minimum undercuts. Possible ejecting directions are represented as discrete points on a Gauss map. Our new point distribution method for the Gauss map is based on the concept of the architectural geodesic dome. A hierarchical structure is also introduced in the point distribution, with a higher level “rough” Gauss map with rather sparse point distribution and another lower level “fine” Gauss map with much denser point distribution. A system is implemented and computational experiments are performed. Our system requires less than 10 seconds to determine the optimal ejecting direction of a CAD model with more than 1 million polygons.

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Paknahad, A., and R. Nourani. "Mix Model of FE Method and IPSO Algorithm for Dome Shape Optimization of Articulated Pressure Vessels Considering the Effect of Non-geodesic Trajectories." Journal of The Institution of Engineers (India): Series C 95, no. 2 (April 2014): 151–58. http://dx.doi.org/10.1007/s40032-014-0110-8.

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Widyowijatnoko, Andry, and Rakhmat Fitranto Aditra. "Application of Bamboo Radial Compression Joint for Tension and Knock-Down Structures." Indonesian Journal of Science and Technology 3, no. 1 (April 10, 2018): 40. http://dx.doi.org/10.17509/ijost.v3i1.10807.

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Bamboo applications become popular recently by the community due to the rise of environmental awareness, including for post-disaster building. Two aspects of post-disaster buildings were considered: i.e. its performance and its recyclability. This research explore ability of bamboo as tensile structure, and also as knock-down structure. Bamboo radial compression (barcom) connection was explored by these aspects. Barcom joint is one of the solutions to be effectively used for gaining the tensile strength of bamboo by converting tensile load parallel to fiber into radial compression perpendicular to fiber. Barcom joint was tested to acquire its load capacity and its future improvement. The load test showed that the barcom connection could reach up to 21.61 kN. To improve this capacity, either better wire or special washer design could be proposed. The adaption in previous built structure (i.e. Three Mountain Building in Serangan island, Bali and knock-down bamboo geodesic dome in Colombia) was used as a case-study. In the construction of Three Mountain Building, barcom joint was used to hang the bamboo rafters and acts as tension-like member. Meanwhile, the use of barcom joint in Colombia was intended to connect the bamboo with the steel bowl connector which could be dismantled and reused again many times.

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Mortensen, Peter. "Tools of Transformation: Appropriate Technology in U.S. Countercultural Literature." American Studies in Scandinavia 44, no. 2 (September 1, 2012): 75–93. http://dx.doi.org/10.22439/asca.v44i2.4917.

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This essay takes its cue from second-wave ecocriticism and from recent scholarly interest in the “appropriate technology” movement that evolved during the 1960s and 1970s in California and elsewhere. “Appropriate technology” (or AT) refers to a loosely-knit group of writers, engineers and designers active in the years around 1970, and more generally to the counterculture’s promotion, development and application of technologies that were small-scale, low-cost, user-friendly, human-empowering and environmentally sound. Focusing on two roughly contemporary but now largely forgotten American texts Sidney Goldfarb’s lyric poem “Solar-Heated-Rhombic-Dodecahedron” (1969) and Gurney Norman’s novel Divine Right’s Trip (1971)—I consider how “hip” literary writers contributed to eco-technological discourse and argue for the 1960s counterculture’s relevance to present-day ecological concerns. Goldfarb’s and Norman’s texts interest me because they conceptualize iconic 1960s technologies—especially the Buckminster Fuller-inspired geodesic dome and the Volkswagen van—not as inherently alienating machines but as tools of profound individual, social and environmental transformation. Synthesizing antimodernist back-to-nature desires with modernist enthusiasm for (certain kinds of) machinery, these texts adumbrate a humanity- and modernity-centered post-wilderness model of environmentalism that resonates with the dilemmas that we face in our increasingly resource-impoverished, rapidly warming and densely populated world.

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Santana, Murillo V. B., Paulo B. Gonçalves, and Ricardo A. M. Silveira. "Static stability and load capacity of pyramidal trusses." MATEC Web of Conferences 148 (2018): 07005. http://dx.doi.org/10.1051/matecconf/201814807005.

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The analysis of pyramidal trusses has an immediate practical interest since these structures are currently used in many present-day civil constructions, either as main parts or a constitutive element. They can be used to represent tripod-like structures, cap of masts, tower cranes, big span roofs, and even a portion of a single-layer geodesic dome or of a generic-shaped reticulated shell. This paper examines the nonlinear static stability and load capacity for a simple class of space trusses in the shape of a regular pyramid. Joints located at the vertices of the base polygon are fixed while the joint at the apex is subjected to static loads acting in either the vertical direction, in the horizontal plane, or along a generic oblique direction. Despite their apparent simplicity, these structural systems exhibit a wide variety of post-critical responses, not exhausted by the classical snapping and bifurcation phenomena. In addition to regular primary and secondary branches, the equilibrium paths may include neutral branches, namely branches entirely composed of bifurcation or limit points. The analysis is conducted using the Finite Element Method together with a corotational formulation for the bars. The numerical results are validated in the elastic domain using the closed-form solutions found in literature.

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Orlando, Diego, Paulo Batista Gonçalves, Stefano Lenci, and Giuseppe Rega. "Increasing Practical Safety of Von Mises Truss via Control of Dynamic Escape." Applied Mechanics and Materials 849 (August 2016): 46–56. http://dx.doi.org/10.4028/www.scientific.net/amm.849.46.

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This paper investigates the nonlinear dynamics and stability of the shallow von Mises truss, which is a prototype for buckling analysis of several planar and spatial truss systems and shallow lattice shell structures, including the geodesic dome, and which has a theoretical and practical interest in many engineering fields. These structural systems are liable to limit point instability and may fail at load levels well below the theoretical limit point load due to complex nonlinear phenomena that reduce the safety and the dynamic integrity of the structure; this often occurs as a consequence of the erosion of the basins of attraction of the safe pre-buckling solutions. So, it is vital to increase the safety of the structure in a dynamic environment. In this paper a method for controlling the global nonlinear dynamics of mechanical systems is applied to the shallow von Mises truss. The method consists of the (optimal) elimination of homoclinic intersection by properly adding superharmonic terms to a given harmonic excitation. By means of the solution of an appropriate optimization problem, it is possible to select the amplitudes and the phases of the added superharmonics in such a way that the manifolds distance is as large as possible. This methodology is here applied to increase the integrity of the basins of attraction of the system and consequently its practical safety.

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Journal articles on the topic 'Geodesic dome'

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