OPTIMAL DESIGN OF PATH-DEPENDENT NONLINEAR STRUCTURES WITH CRITICAL AND POST-CRITICAL BEHAVIOUR

机译：具有关键行为和关键行为的路径相关非线性结构的优化设计

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This work deals with the optimal design of nonlinear structures where both geometric and path-dependent material nonlinearities are considered. Postcritical behavior is allowed. Critical and postcritical constraints are considered. Local and global stability have been introduced also as constraints. The classical critical load constraint is given with numerical advantage by a new method using displacement constraint. The Total Lagrangean description and a continuum variational formulation are used for the response and design sensitivity analysis. A continuation algorithm is used to implement the postcritical path. Optimal design is performed with respect to cross-section dimensions and configuration.

机译：这项工作涉及考虑几何和与路径有关的材料非线性的非线性结构的优化设计。允许后临界行为。考虑了关键和关键后约束。还引入了局部和全局稳定性作为约束。通过使用位移约束的新方法，经典的临界载荷约束具有数值优势。总拉格朗日描述和连续变量表述用于响应和设计敏感性分析。连续算法用于实现后临界路径。关于横截面尺寸和构造进行最佳设计。

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《Third International Conference on Coupled Instabilities in Metal Structures CIMS'2000, 3rd, Sep 21-23, 2000, Lisbon-Portugal》|2000年|p.651-658|共8页
会议地点 Lisbon(PT);Lisbon(PT)
作者
J. B. CARDOSO; L. G. SOUSA; A. J. VALIDO;
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作者单位

Institute Superior Tecnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;

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原文格式 PDF
正文语种 eng
中图分类建筑科学;
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OPTIMAL DESIGN OF PATH-DEPENDENT NONLINEAR STRUCTURES WITH CRITICAL AND POST-CRITICAL BEHAVIOUR

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