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

Journal of Computational Science and Technology

Dai Heng CHEN¹  Kuniharu USHIJIMA³  Wesley James CANTWELL² 

[1]Department of Mechanical Engineering, Tokyo University of Science

[2]Department of Engineering, University of Liverpool

[3]Department of Mechanical Engineering, Kyushu Sangyo University

关键词: Lattice;    Elasticity;    Plasticity;    Finite Element Method;    Structural Analysis;    Yield Criterion;   

DOI  :  10.1299/jcst.4.159

学科分类：地球科学(综合)

来源: Japan Academy

【 摘 要 】

References(5)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 ƒ2BCC 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.

【 授权许可】

Unknown