A Box element to model semi-rigid connections in shell-based thin-walled structures analysis

被引:3
|
作者
Soares, Henrique Barbosa [1 ]
Paccola, Rodrigo Ribeiro [1 ]
Coda, Humberto Breves [1 ]
机构
[1] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Struct Engn, Av Trabalhador Sao Carlense 400, BR-13566590 Sao Carlos, SP, Brazil
基金
巴西圣保罗研究基金会;
关键词
Flexible connections; Stability analysis; Post-critical behavior; Thin-walled structures; GENERALIZED BEAM THEORY; WARPING TRANSMISSION; BUCKLING ANALYSIS; FINITE-ELEMENT; JOINTS; PLATES; MEMBERS; FRAMES;
D O I
10.1016/j.engstruct.2021.113075
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
In this study, we develop and propose a finite element (Box Element) designed specially to improve the shellbased simulation of elastic thin-walled structures. The Box Element (BE) allows a simple and automatic connection between beams and columns, as well as, between slabs and beams. The BE stiffness is assembled by bracing panels immersed in its numerical structure simulating the flexibility of connections. Its formulation is developed using an in house positional FEM code, whose 3D rotation degrees of freedom are replaced by generalized vectors, facilitating bending couplings and large rotation modeling. Instability and geometrical nonlinear path-following analysis are studied in examples, comparing results with literature benchmarks and proposing a practical application.
引用
收藏
页数:17
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