Journal of the International Association for Shell and Spatial Structures最新文献_第6页

Programmable and Reconfigurable Surfaces with Kirigami-Inspired Bistable Elements 可编程和可重构表面与基里伽米启发的双稳态元素

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2021-12-01 DOI: 10.20898/j.iass.2021.013_2

Qian Zhang, Ning Pan, Jianguo Cai, Jian Feng

{"title":"Programmable and Reconfigurable Surfaces with Kirigami-Inspired Bistable Elements","authors":"Qian Zhang, Ning Pan, Jianguo Cai, Jian Feng","doi":"10.20898/j.iass.2021.013_2","DOIUrl":"https://doi.org/10.20898/j.iass.2021.013_2","url":null,"abstract":"Active shaping and recovery are the important paths to reconfiguration and reuse of the structure, but only a few reconfiguration structures have been analyzed and explored, and their applicability also needs to be improved. Active shaping and recovery methods are proposed for the kirigami-inspired\u0000 element with bistability and self- locking property in this paper. A rotationally symmetric kirigami pattern is designed with five geometric parameters at first. The finite element models are established to investigate the vertical tension and compression behavior. The bistability and self-locking\u0000 behavior are analyzed systematically by the relation curves between strain energy, vertical and rotational displacement of the central square facet. The proposed active shaping method can be divided into the in-plane tension stage and the free deformation stage. Moreover, the key of the proposed\u0000 active shaping method is the arrangement of the actuating position and the corresponding displacement and force, which are reported by parametric analysis. The recovery method is also put forward to make the model return from the folding stable state to the unfolding stable state. Besides,\u0000 the cardboard model experiments are performed to verify the numerical analysis results, which is followed by the active shaping analysis of the surface with kirigami-inspired bistable elements. This principle opens a novel path to establish programmable and reconfigurable surface design systems\u0000 with kirigami-inspired elements.","PeriodicalId":42855,"journal":{"name":"Journal of the International Association for Shell and Spatial Structures","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44467467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Bridges of Eduardo Torroja Eduardo Torroja的桥梁

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2021-12-01 DOI: 10.20898/j.iass.2021.020

M. Schlaich

引用次数: 0

Study on Thermal Damage of Large-Span Ice Shell Structure Based on Thermal-Mechanical Coupling 基于热力耦合的大跨度冰壳结构热损伤研究

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2021-12-01 DOI: 10.20898/j.iass.2021.016_2

Xiuming Liu, Yuehua Wu, S. Shen

引用次数: 0

Cable Force Measurement Technology and Engineering Application 电缆力测量技术及工程应用

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2021-09-01 DOI: 10.20898/j.iass.2021.006

Juwei Xia, Yun-long Yao, Xiao-shun Wu, Yuan-hong Chen

引用次数: 1

Shaping Indeterminate Frames 塑造不确定的框架

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2021-09-01 DOI: 10.20898/j.iass.2021.011

P. Mayencourt, J. Ochsendorf, C. Mueller

{"title":"Shaping Indeterminate Frames","authors":"P. Mayencourt, J. Ochsendorf, C. Mueller","doi":"10.20898/j.iass.2021.011","DOIUrl":"https://doi.org/10.20898/j.iass.2021.011","url":null,"abstract":"The large impact of building structures on the environment must be reduced to meet the global targets fixed by the Intergovernmental Panel on Climate Change. Standard building structures with constant prismatic cross-section have material inefficiencies of around 66% (and up to 75%\u0000 in some cases) that need to be addressed. Structural shaping, a subfield of shape optimization, offers a pathway to reduce the impact of building materials on the environment. Shaping statically determinate structures such as simply supported beams is relatively straightforward, but offers\u0000 few design options compared to statically indeterminate structures. However, no methods provide an efficient way for designers to shape these systems according to their design intent or efficiency goals. Based on plasticity theory, this paper presents a shaping methodology to explore the design\u0000 space of shaped indeterminate frame structures. The methodology is implemented in three case studies. In all the case studies, the methodology allows for the exploration of material-efficient yet diverse designs of shaped indeterminate frame structures. The implementation of this\u0000 methodology can promote the use of structural shaping by offering more agency to structural designers to create diverse and efficient structural systems.","PeriodicalId":42855,"journal":{"name":"Journal of the International Association for Shell and Spatial Structures","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46367016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prefabrication of a Thin Concrete Shell: The Case of St Kevin's Church in Dee Why, Australia 预制薄混凝土外壳:以澳大利亚迪瓦的圣凯文教堂为例

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2021-09-01 DOI: 10.20898/j.iass.2021.009

P. Stracchi

引用次数: 0

Linear Buckling Analysis Considering No-compression Property of Metal Grid Shells Stiffened by Tension Braces 考虑张力支撑加筋金属网壳无压缩特性的线性屈曲分析

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2021-09-01 DOI: 10.20898/j.iass.2021.010

Kenji Yamamoto, H. Utebi

引用次数: 0

Next Generation Parametric Design 下一代参数化设计

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2021-06-01 DOI: 10.20898/j.iass.2021.018

J. Coenders

引用次数: 2

Shape Generation of Bending-Active Braced Arches Based on Elastica Curves 基于弹性曲线的主动弯曲支撑拱形状生成

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2021-06-01 DOI: 10.20898/j.iass.2021.016

Juan Bessini, Salvador Monleón, J. Casanova, C. Lázaro

{"title":"Shape Generation of Bending-Active Braced Arches Based on Elastica Curves","authors":"Juan Bessini, Salvador Monleón, J. Casanova, C. Lázaro","doi":"10.20898/j.iass.2021.016","DOIUrl":"https://doi.org/10.20898/j.iass.2021.016","url":null,"abstract":"The active bending concept provides a new perspective for a well-established structural type which has been used at various scales: the beam-string, consisting of a beam with an attached lower tie in tension and bracing struts balancing the forces between them. The idea goes back to\u0000 the gutter beams of the Crystal Palace and has been widely used to the present for large-scale structures. When a slender beam is used, the tension in the tie induces curvature in the beam and increases the structural depth of the system; this opens new formal possibilities and results in\u0000 lightweight structures at the expense of increasing their overall flexibility. Systems of this kind fall within the realm of active bending. We name them bending-active braced arches. The target shape of the system follows the tensioning process and needs to be pre-determined by means of a\u0000 specific analysis, typically involving dynamic relaxation or optimization-based methods. In this paper, we propose an analytical method to generate shapes for bending-active braced arches. It assumes that each segment of the activated rod between deviators behaves as a segment of elastica;\u0000 this enables the use of closed-form expressions to evaluate the shape and induced stress level in the active member. Taking advantage of this idea, it is possible to devise a procedure to carry out the shaping process in a sequential way by adequately choosing the design parameters. When alternative\u0000 choices for the parameters are selected, the problem becomes non-linear and can be solved using suitable techniques. Some examples with different design constraints have been reproduced to illustrate the possibilities of the method.","PeriodicalId":42855,"journal":{"name":"Journal of the International Association for Shell and Spatial Structures","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47547262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Computational Modeling and Energy Absorption Behavior of Thin-Walled Tubes with the Kresling Origami Pattern Kresling折纸图案薄壁管的计算建模和能量吸收行为

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2021-06-01 DOI: 10.20898/j.iass.2021.008

Jiaqiang Li, Yao Chen, Xiaodong Feng, Jian Feng, Pooya Sareh

{"title":"Computational Modeling and Energy Absorption Behavior of Thin-Walled Tubes with the Kresling Origami Pattern","authors":"Jiaqiang Li, Yao Chen, Xiaodong Feng, Jian Feng, Pooya Sareh","doi":"10.20898/j.iass.2021.008","DOIUrl":"https://doi.org/10.20898/j.iass.2021.008","url":null,"abstract":"Origami structures have been widely used in various engineering fields due to their desirable properties such as geometric transformability and high specific energy absorption. Based on the Kresling origami pattern, this study proposes a type of thin-walled origami tube the structural\u0000 configuration of which is found by a mixed-integer linear programming model. Using finite element analysis, a reasonable configuration of a thin-walled tube with the Kresling pattern is firstly analyzed. Then, the influences of different material properties, the rotation angle of the upper\u0000 and lower sections of the tube unit, and cross-sectional shapes on the energy absorption behavior of the thin-walled tubes under axial compression are evaluated. The results show that the symmetric thin-walled tube with the Kresling pattern is a reasonable choice for energy absorption purposes.\u0000 Compared with thin-walled prismatic tubes, the thin-walled tube with the Kresling pattern substantially reduces the initial peak force and the average crushing force, without significantly reducing its energy absorption capacity; moreover, it enters the plastic energy dissipation stage ahead\u0000 of time, giving it a superior energy absorption performance. Besides, the material properties, rotation angle, and cross-sectional shape have considerable influences on its energy absorption performance. The results provide a basis for the application of the Kresling origami pattern in the\u0000 design of thin-walled energy-absorbingstructures.","PeriodicalId":42855,"journal":{"name":"Journal of the International Association for Shell and Spatial Structures","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45019075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 36