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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概要
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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.
著者
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CANTWELL Wesley
Department of Engineering, University of Liverpool
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USHIJIMA Kuniharu
Department of Mechanical Engineering, Kyushu Sangyo University
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CHEN Dai
Department of Mechanical Engineering, Tokyo University of Science
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