缩进
有限元法
屈曲
变形(气象学)
结构工程
参数统计
流离失所(心理学)
材料科学
工程类
复合材料
数学
心理学
统计
心理治疗师
作者
Zhipeng Gao,Hai Zhang,Jian Zhao,Zhanyuan Gao,Zhixin Huang,Dong Ruan
出处
期刊:International Journal of Applied Mechanics
[World Scientific]
日期:2023-01-01
卷期号:15 (01)
被引量:4
标识
DOI:10.1142/s1758825123500011
摘要
Finite element analysis (FEA) is widely used to investigate the crushing performance of thin-walled tubes, and carry out parametric studies. However, simulation results are not always in good agreements with experimental results especially in terms of deformation modes in published literature. In this paper, a systematic FEA study will be conducted to evaluate two main simulation techniques using indentation triggers and buckling modes to introduce imperfections in FEA. Axial compressive tests were first carried out on three types of thin-walled circular tubes with different geometrical parameters. The finite element models were subsequently developed and used to explore the effects of indentation triggers and buckling modes on the deformation modes and force–displacement curves of thin-walled tubes. The influences of indentation depths and indentation positions on the crushing performance were investigated. Similarly, the effects of the order of buckling modes and scale factors on the crushing characteristics were examined as well. It has been found that for thin-walled circular tubes, a suitable simulation technique with indentation triggers or buckling modes can be employed to precisely mimic the deformation mode and corresponding force–displacement curve. This study is expected to provide some practical techniques and insights into the numerical simulation of circular tubes.
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