Nonlinear Analysis of Steel Space Trusses
Nonlinear Analysis of Steel Space Trusses
复制标题
钢空间桁架的非线性分析
DOI：
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发表时间：
1988
期刊：
影响因子：
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通讯作者：
Christopher D. Hill
中科院分区：
文献类型：
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作者：
Shien T. Wang;G. Blandford;Christopher D. Hill
研究了薄壁空间钢桁架结构在局部、杆件和整体屈曲相互作用下的性能。由于构件屈曲或拉伸屈服和局部屈曲的构件板的非线性占在分析中。使用几何刚度矩阵包括一阶几何效应。二阶效应包括通过更新的拉格朗日公式。提出了一种基于修正牛顿-拉夫森迭代法的增量/迭代求解策略。开发的方法跟踪局部屈曲和构件屈曲的顺序，直到整个结构的最终失败。曲线穹顶结构的突跳行为和分层网格由于渐进破坏而倒塌，
An investigation of the behavior of thin-walled steel space truss structures under the interaction of local, member, and overall buckling is described. Nonlinearities due to member buckling or tensile yielding and local buckling of component plates of the member are accounted for in the analysis. First-order geometric effects are included using a geometric stiffness matrix. Second-order effects are included through an updated Lagrangian formulation. An incremental/iterative solution strategy utilizing modified Newton-Raphson iterations with a constant arc-length constraint is presented. The method developed traces the sequence of local buckling and member buckling until eventual failure of the entire structure. snap-through behavior of curved, dome-type structure and the collapse of layered grid due to progressive failure the