The main objective of this paper is to validate a finite-element (FE) modeling protocol to simulate thin-walled members for static and dynamic analyses. Arbitrary-shaped cross-sections, including open, closed, and multicellular sections can be efficiently modeled for further advanced study. The framework is thoroughly validated and verified using the existing analytical and closed-form solutions, as well as experimental results available in literature. This work is motivated by the higher accuracy of the shell FE-based modeling to capture the local and global complex behaviors of thin-walled members with asymmetric sections. Higher computational expenses, however, are required for such sophisticated shell finite element models (SFEM). Accordingly, a framework hosted in MATLAB and implementing the python scripting technique in ABAQUS, is developed, which includes eigen buckling, static nonlinear, modal frequency and dynamic time-history analyses. For a more modeling convenience, various parameters are incorporated such as imperfections, residual stresses, material definitions, element choice, meshing control, and boundary conditions. Several examples are provided to illustrate the application of the proposed framework, and to prove the robustness and accuracy of the generated FE models. This paper concludes with the efficiency of implementing SFEMs for simulating thin-walled members; thereby, establishing a more accurate and advanced structural analysis.

中文翻译：

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用于静态和动态分析的任意形状横截面的薄壁构件仿真

本文的主要目的是验证有限元 (FE) 建模协议，以模拟用于静态和动态分析的薄壁构件。任意形状的横截面，包括开放的、封闭的和多细胞的部分，都可以有效地建模，以进行进一步的高级研究。该框架使用现有的分析和封闭式解决方案以及文献中可用的实验结果进行了彻底验证和验证。这项工作的动机是基于壳有限元建模的更高准确性，以捕捉具有不对称截面的薄壁构件的局部和全局复杂行为。然而，这种复杂的壳有限元模型 (SFEM) 需要更高的计算费用。因此，开发了一个托管在 MATLAB 中并在 ABAQUS 中实现 python 脚本技术的框架，其中包括本征屈曲、静态非线性、模态频率和动态时程分析。为了更方便建模，结合了各种参数，例如缺陷、残余应力、材料定义、单元选择、网格控制和边界条件。提供了几个示例来说明所提出框架的应用，并证明生成的有限元模型的鲁棒性和准确性。本文总结了实施 SFEM 以模拟薄壁构件的效率；从而，建立更准确和先进的结构分析。单元选择、网格控制和边界条件。提供了几个示例来说明所提出框架的应用，并证明生成的有限元模型的鲁棒性和准确性。本文总结了实施 SFEM 以模拟薄壁构件的效率；从而，建立更准确和先进的结构分析。单元选择、网格控制和边界条件。提供了几个示例来说明所提出框架的应用，并证明生成的有限元模型的鲁棒性和准确性。本文总结了实施 SFEM 以模拟薄壁构件的效率；从而，建立更准确和先进的结构分析。