μ-CT-based finite element analysis on imperfections in open-celled metal foam: Mechanical properties

SCRIPTA MATERIALIA

卷:67

Article

Fiedler, T.¹  Belova, I. V.¹  Murch, G. E.¹ 

[1] Univ Newcastle, Callaghan, NSW 2308, Australia

关键词: Cellular material;    Imperfection;    Finite element analysis;    Three-dimensional tomography;   

DOI  :  10.1016/j.scriptamat.2012.06.002

来源: Elsevier

【 摘 要 】

This study digitally identifies and repairs defects produced in the manufacturing of an open-cell metal foam for the first time. Finite element calculations are based on microcomputed tomography data of actual samples. The effective Young's modulus and 0.2% offset yield strength are calculated and equivalent plastic strain is used to identify weakness within the material. In areas of high plastic deformation, the structure is digitally repaired locally and the calculations are repeated in order to quantify the change in material properties. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free