文章基本信息

标题：Evaluation of the Mechanical Properties of Lightweight Lattice Structures Subjected to Compressive Loading Part I : Analytical Approach for the Initial Stiffness and Plastic Collapse Strength
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作者：Kuniharu USHIJIMA ; Wesley James CANTWELL ; Dai Heng CHEN 等
期刊名称：Journal of Computational Science and Technology
电子版ISSN：1881-6894
出版年度：2010
卷号：4
期号：3
页码：159-171
DOI：10.1299/jcst.4.159
出版社：The Japan Society of Mechanical Engineers
摘要：In this paper, a theoretical analysis for predicting the mechanical properties of lattice structures under compressive loading is proposed, and verified by comparing the analytical predictions with FEM results. This theory for estimating E ^* is based on the classical beam theory, and the one for estimating σ^*_pl reflects the stress state for each lattice structure. It is found that the BCC structure is a bending-dominated structure, and the BCCZ structure is a compression-dominated structure, and the ƒ ₂ BCC structure is a mixed loading-dominated (stretching or compression and bending-dominated) structure. Also, the results obtained by this theory agree well with the FEM results.
关键词：Lattice;Elasticity;Plasticity;Finite Element Method;Structural Analysis;Yield Criterion