International Journal of Space Structures最新文献

Design and analysis of bending-active configurations through an initial flat-cut pattern based on the curvature lines 通过基于曲率线的初始平面切割模式设计和分析弯曲活性配置

International Journal of Space Structures Pub Date : 2024-05-22 DOI: 10.1177/09560599241249856

Armin Fathollahi, V. Beatini

引用次数: 0

Memories of Professor Tian T. Lan 回忆田子霖教授

International Journal of Space Structures Pub Date : 2024-03-28 DOI: 10.1177/09560599241242578

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Analysis and comparison on the mechanical behaviors of original bolt-column (OBC) joint and improved bolt-column (IBC) joint 原始螺栓-柱 (OBC) 连接和改进螺栓-柱 (IBC) 连接的机械性能分析与比较

International Journal of Space Structures Pub Date : 2024-03-06 DOI: 10.1177/09560599241234801

Zhicheng Xiao, Jingxuan Peng, Chengxin Li, Gengwang Yan, Huijun Li

{"title":"Analysis and comparison on the mechanical behaviors of original bolt-column (OBC) joint and improved bolt-column (IBC) joint","authors":"Zhicheng Xiao, Jingxuan Peng, Chengxin Li, Gengwang Yan, Huijun Li","doi":"10.1177/09560599241234801","DOIUrl":"https://doi.org/10.1177/09560599241234801","url":null,"abstract":"In this study, OBC joint is improved by incorporating one web, two flanges, and two additional bolts, putting forward a novel semi-rigid joint referred to as IBC joint. Finite element models of both OBC and IBC joints are established and the former is validated based on previous research. Subsequently, a total of 84 numerical models is utilized to investigate and compare the mechanical behaviors of OBC and IBC joints, taking into account different thicknesses of side plate and flange as wll as various loading conditions. The numerical results indicate that: (I) in comparison to OBC joints, the IBC joints exhibit significant enhancements in strong axis bending performance and axial tensile performance, including average enhancement ratios of 48%, 67%, 44%, and 19% in initial strong axis bending stiffness, ultimate strong axis bending moment, initial tensile stiffness and ultimate tension, respectively; (II) compared to OBC joints, the IBC joints demonstrate reduced capacity in axial torsional resistance and axial compressive performance, with mean decline ratios of 54%, 39%, 14%, and 7% in initial torsional stiffness, ultimate torque, initial compressive stiffness and ultimate compression, respectively; (III) OBC joints have better weak axis bending performance compared to IBC joints, but this gap decreases remarkably with increasing thicknesses of side plate and flange; (IV) the initial out-of-plane shear stiffness and ultimate out-of-plane shear of the IBC joint exhibit average enhancement of approximately 20% and 10%, respectively, when compared to those of the OBC joint; (V) regarding in-plane shear performance, the initial stiffness of IBC joints exceeds that of OBC joints by an average ratio of 61%, while IBC joints with flange thickness over 10 mm demonstrate significant improvement in ultimate capacity; (VI) The mechanical performance of OBC and IBC joints shows varying degrees of improvement with an increase in the thicknesses of side plate and flange.","PeriodicalId":34964,"journal":{"name":"International Journal of Space Structures","volume":"138 47","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140078534","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

Earthquake response evaluation of cylindrical latticed roofs supported by BRBs: Comparison of responses based on Chinese codes and Japanese regulations 由 BRB 支撑的圆柱格状屋顶的地震响应评估：基于中国规范和日本法规的响应比较

International Journal of Space Structures Pub Date : 2024-02-23 DOI: 10.1177/09560599241233385

Y. Takiuchi, S. Kato, S. Nakazawa, Yutaka Niho

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Preface for the special issue of IJSS IJSS 特刊序言

International Journal of Space Structures Pub Date : 2024-02-23 DOI: 10.1177/09560599241235249

Su-Duo Xue, Jin-Zhi Wu

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Target shape approximation of funicular surfaces by load control using RBF interpolation 利用 RBF 插值法通过负载控制逼近缆车表面的目标形状

International Journal of Space Structures Pub Date : 2024-02-16 DOI: 10.1177/09560599241228537

Kazuki Hayashi, Jun Yanagimuro

{"title":"Target shape approximation of funicular surfaces by load control using RBF interpolation","authors":"Kazuki Hayashi, Jun Yanagimuro","doi":"10.1177/09560599241228537","DOIUrl":"https://doi.org/10.1177/09560599241228537","url":null,"abstract":"Existing methods for form-finding prioritize discovering optimal shapes under design load conditions, often overlooking the designer’s shape preferences. To address this problem, this research relaxes the load condition and develops a user-friendly form-finding tool that encapsulates a new method for obtaining funicular surfaces that pass through user-prescribed points through load control. The method involves generating smooth load distributions via RBF interpolation of nodal loads, which are repeatedly adjusted so that the equilibrium shape is close enough to the target points. For faster convergence, the step size of the load adjustment is automatically determined through a coarse line search, and a warm start is introduced in form-finding with the dynamic relaxation method. Despite uneven load distributions, the method ensures high accuracy in approximating the surface shape to the desired points while preserving funicularity against the load distributions. Additionally, the resulting load distribution gives designers valuable feedback on the specified target points, as the degree of load non-uniformity indicates the deviation from the equilibrium shape for uniformly distributed loads.","PeriodicalId":34964,"journal":{"name":"International Journal of Space Structures","volume":"57 45","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139960808","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}

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Recent development and engineering practices of space grid structures in China 中国空间网格结构的最新发展和工程实践

International Journal of Space Structures Pub Date : 2024-02-16 DOI: 10.1177/09560599241228934

Yaozhi Luo, Yu Xue

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A form-finding method for adaptive truss structures subject to multiple static load cases 多静态荷载情况下自适应桁架结构的形式查找方法

International Journal of Space Structures Pub Date : 2024-01-30 DOI: 10.1177/09560599231212707

Jan Gade, F. Geiger, Roman Kemmler, Manfred Bischoff

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Professor Tien Lan: The pioneer of spatial structures in China 田澜教授中国空间结构的先驱

International Journal of Space Structures Pub Date : 2023-12-21 DOI: 10.1177/09560599231216570

Yigang Zhang, Feng Liu, Suduo Xue, Ming Ma, Jinzhi Wu, Wen Xue, ZheLun Zhang

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Mechanical behavior of PVDF membrane based on the uni-/bi-axial loading experiments 基于单/双轴加载实验的 PVDF 膜机械性能

International Journal of Space Structures Pub Date : 2023-12-20 DOI: 10.1177/09560599231214638

Liu Ping, Bai-Jian Tang, WenRui Li, C. Ngamkhanong

{"title":"Mechanical behavior of PVDF membrane based on the uni-/bi-axial loading experiments","authors":"Liu Ping, Bai-Jian Tang, WenRui Li, C. Ngamkhanong","doi":"10.1177/09560599231214638","DOIUrl":"https://doi.org/10.1177/09560599231214638","url":null,"abstract":"Recently, composite PVDF membranes with good performance have triggered enormous interest because of their great potential application. However, the uncertainty of mechanical properties limits their application. Herein, this paper reveals the elastic modulus properties of the loading angle between warp and tensile direction using the uni-axial tensile test of SH-1050P membrane textile. In addition, the bi-axial tensile test with different loading ratios was implemented. Both uni-axial and bi-axial ductile load-displacement/stress-strain curves are featured. It is the first to establish a relationship between the elastic modulus and the loading angle using a theoretical method based on the assumption that there is no slippage and crease between yarns and matric. Furthermore, simulations with different textile parameters were carried out to verify the theoretical results. The key finding is that the elastic modulus under uni-axial load can be divided into two stages, which are elasticity and plasticity. Both of which are proportional to the sine function applied to two times the loading angle. The Poisson’s ratio of SH-1050P textile can be considered as a fixed value of 0.11. This conclusion can be extended to similar textiles. The outcome of this paper contributes to a deeper understanding of the PVDF memrane’s mechanical behavior and presents a novel insight into its response to different loading conditions.","PeriodicalId":34964,"journal":{"name":"International Journal of Space Structures","volume":"50 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138955483","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