Affiliation of Author(s):民航学院
Journal:COMPOSITES SCIENCE AND TECHNOLOGY
Key Words:Needle punched C/C composite Micro-CT image Image processing Reconstructed FE model Damage simulation
Abstract:A 3D microscopic FE approach of needle-punched carbon-carbon composite (NP C/C) is modeled based upon micro-CT technology. The images of micro-CT of NP C/C are processed and the outlines of warp, weft and punched fibre bundles are extracted. Then discrete gray images are generated and from them a microscopic FE model is reconstructed which can represent the features of micro structure and imperfections in NP C/C. Failure criterion and periodic boundary condition are employed in the FE approach and then progressive damages are investigated. Numerical simulation reveals the predominant failure mechanisms in this NP C/C under uniaxial tensile and compressive loads. The predicted stress/strain curves agree well with the experiment data. (C) 2017 Elsevier Ltd. All rights reserved.
ISSN No.:0266-3538
Translation or Not:no
Date of Publication:2017-12-01
Co-author:于健,张海军
Correspondence Author:Zhou Chuwei
Date of Publication:2017-12-01