8th International Conference on Coupled Instabilities in Metal Structures (CIMS 2021)最新文献

Local-distortional and Overall Interactive Buckling of Unstiffened Open Cross-section Thin-walled Steel Members 非加劲开口截面薄壁钢构件的局部变形和整体相互作用屈曲

8th International Conference on Coupled Instabilities in Metal Structures (CIMS 2021) Pub Date : 2021-06-21 DOI: 10.2139/ssrn.3871146

D. Dubina, V. Ungureanu

引用次数: 0

A reduced model for nonlinear analysis and design of thin-walled structures prone to multi-modal buckling 多模态屈曲薄壁结构非线性分析与设计的简化模型

8th International Conference on Coupled Instabilities in Metal Structures (CIMS 2021) Pub Date : 2021-06-16 DOI: 10.2139/ssrn.3868254

D. Magisano, F. Liguori, L. Leonetti, A. Madeo, G. Garcea

引用次数: 0

Effect of Boundary Condition on Buckling Behavior of Built-up Cold-Formed Steel Members Under Bending 边界条件对冷弯组合钢构件屈曲行为的影响

8th International Conference on Coupled Instabilities in Metal Structures (CIMS 2021) Pub Date : 2021-06-16 DOI: 10.2139/ssrn.3868173

Akane Watanabe, K. Ikarashi

引用次数: 0

Dynamic buckling of Fiber Metal Laminate Structure 金属纤维层压结构的动力屈曲

8th International Conference on Coupled Instabilities in Metal Structures (CIMS 2021) Pub Date : 2021-06-16 DOI: 10.2139/ssrn.3868178

M. Zaczynska, R. Mania

{"title":"Dynamic buckling of Fiber Metal Laminate Structure","authors":"M. Zaczynska, R. Mania","doi":"10.2139/ssrn.3868178","DOIUrl":"https://doi.org/10.2139/ssrn.3868178","url":null,"abstract":"The dynamic buckling phenomenon of hybrid multilayer Fiber Metal Laminate structure was presented. The analysis was performed on short thin-walled channel section columns subjected to axial compressive impulse loading. The dynamic buckling investigation was carried out numerically using the Finite Element Method. Three samples differentiate in the laminate stacking sequence were considered. The analysis of dynamic buckling phenomena was performed using both geometric criteria and failure criteria. This approach allows getting to know the behaviour of the multilayer FML structure under pulse loading. The effect of initial geometric imperfection, laminate stacking sequence and the shape of the pulse load on the dynamic stability was also analysed. Results depicted the lowest resistance of the investigated channel FML columns to the rectangular-shaped pulse loading and the lowest one - for the columns subjected to triangular-shaped pulse load. Three analysed profiles, varying in GFRP stacking sequences, presented similar behaviour under pulse compressive loading. The parametric analysis reveals the yielding of the aluminium outer layers as a dominant failure mechanism in FML composite.","PeriodicalId":219973,"journal":{"name":"8th International Conference on Coupled Instabilities in Metal Structures (CIMS 2021)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131833983","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

Buckling activated ventilation control modules: A concept proposal and numerical simulations 屈曲激活通风控制模块:概念建议和数值模拟

8th International Conference on Coupled Instabilities in Metal Structures (CIMS 2021) Pub Date : 2021-06-16 DOI: 10.2139/ssrn.3868233

M. Khezri, K. Rasmussen, Yang Hu

{"title":"Buckling activated ventilation control modules: A concept proposal and numerical simulations","authors":"M. Khezri, K. Rasmussen, Yang Hu","doi":"10.2139/ssrn.3868233","DOIUrl":"https://doi.org/10.2139/ssrn.3868233","url":null,"abstract":"As the requirements in construction industry for lower energy consumption are becoming more stringent, shape morphing triggered by buckling is targeted for energy-saving structural applications. Among the structural forms that are suitable for such applications are thin plates, which are prone to buckling under small in-plane strains. Deployable point-supports can be utilised to enhance and guide the buckling behaviour of thin plates based structural systems and subsequently to achieve desired morphogenesis. In adapting such framework, this study presents novel concepts with application in ventilation control modules. In the proposed models, temporary point-restraints are initially deployed to load the plate into the post-buckling range of the primary plate element. The ventilation system is activated when the temporary point-supports are released, causing the primary plate to buckle into the desired opening form. The proposed models are simulated using finite element software to determine the feasibility of the proposed idea and determine the effectiveness of buckling as a reliable mechanism in kinetic façade control modules. The proposed prototype can be operated using electric and mechanical external motors or alternatively smart materials can be used for sensing and actuation as required.","PeriodicalId":219973,"journal":{"name":"8th International Conference on Coupled Instabilities in Metal Structures (CIMS 2021)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115987077","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

Numerical simulation and verification of adaptive shading modules with buckling as the driver for functionality 以屈曲为功能驱动的自适应遮光模块的数值模拟与验证

8th International Conference on Coupled Instabilities in Metal Structures (CIMS 2021) Pub Date : 2021-06-15 DOI: 10.2139/ssrn.3867184

Yang Hu, M. Khezri, K. Rasmussen

{"title":"Numerical simulation and verification of adaptive shading modules with buckling as the driver for functionality","authors":"Yang Hu, M. Khezri, K. Rasmussen","doi":"10.2139/ssrn.3867184","DOIUrl":"https://doi.org/10.2139/ssrn.3867184","url":null,"abstract":"In the conventional design paradigm, buckling of slender structural members is seen as a route toward failure and measures are taken to avoid its onset. In recent years, a new approach challenging this paradigm is emerging where the mechanical instability of slender elements is utilised to achieve novel modes of functionality. By adopting such a framework, the flexural-torsional buckling of frame geometries can be exploited as a driver to change the shape of slender structural frames to fulfil specific shading functionalities. This study is concerned with the numerical simulation of recently developed simple frames in which out-of-plane buckling of component members is judiciously harnessed to construct adaptive shading modules. Advanced numerical simulations are conducted using Abaqus software to gain a better understanding of the factors that affect the behaviour and performance of the proposed solutions. Building on the gained insight, a comprehensive search strategy is devised for finding optimum solutions for the governing geometrical and actuation parameters. Within the constructed search space, non-linear post buckling analyses are carried out to determine the resultant shading area and to quantify the influence of the governing parameters.","PeriodicalId":219973,"journal":{"name":"8th International Conference on Coupled Instabilities in Metal Structures (CIMS 2021)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128518013","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

Pulse Buckling of a Thin Walled CFRP Cylindrical Shell – A Numerical Approach 薄壁CFRP圆柱壳脉冲屈曲的数值分析

8th International Conference on Coupled Instabilities in Metal Structures (CIMS 2021) Pub Date : 2021-06-15 DOI: 10.2139/ssrn.3867171

M. Zaczynska, H. Abramovich, C. Bisagni

引用次数: 0

Investigating local buckling in highly slender elliptical hollow sections through analysis of 3D-printed analogues 通过对3d打印类似物的分析，研究高细长椭圆空心截面的局部屈曲

8th International Conference on Coupled Instabilities in Metal Structures (CIMS 2021) Pub Date : 2021-06-15 DOI: 10.2139/ssrn.3867308

F. McCann, F. Rossi

{"title":"Investigating local buckling in highly slender elliptical hollow sections through analysis of 3D-printed analogues","authors":"F. McCann, F. Rossi","doi":"10.2139/ssrn.3867308","DOIUrl":"https://doi.org/10.2139/ssrn.3867308","url":null,"abstract":"Tubular structural members with slender cross-sections are susceptible to failure through local buckling of their tube walls. Previous numerical studies of steel elliptical hollow sections in compression predicted the local buckling modes and the ultimate loads of particularly slender specimens, with the results used to calibrate design methods for slender elliptical sections. Although these numerical parametric studies were conducted across a wide slenderness range, it was only possible to validate the models against experimental results in the low slenderness range since commercially available steel EHS are intended to satisfy non-slender geometric limits prescribed by structural design codes. Such limitations to the experimental scope are circumvented in the present study through testing of highly slender specimens produced using additive manufacturing techniques. A total of eight specimens of various cross-sectional aspect ratios and tube wall thicknesses were fabricated at London South Bank University using additive manufacturing techniques, which were then tested in compression; the observed load-deflection behaviour, ultimate loads, longitudinal strains and failure modes are discussed. Through appropriate rescaling of relevant parameters, design predictions for the ultimate load of the 3D printed analogues are obtained using a design method intended for use with steel elliptical hollow sections. It is shown that the design predictions are safe-sided when compared to the present experimental results, with the accuracy generally increasing with aspect ratio and slenderness.","PeriodicalId":219973,"journal":{"name":"8th International Conference on Coupled Instabilities in Metal Structures (CIMS 2021)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121518077","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

Linking the von Karman equations to the design of steel plates 将冯·卡门方程与钢板设计联系起来

8th International Conference on Coupled Instabilities in Metal Structures (CIMS 2021) Pub Date : 2021-06-15 DOI: 10.2139/ssrn.3867277

Jurgen Becque

引用次数: 0