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个人信息Personal Information
副教授
博士生导师
硕士生导师
性别:男
毕业院校:北京航空航天大学
学位:博士
所在单位:力学与航空航天学院
学科:飞行器设计. 航空航天力学与工程. 工程力学
办公地点:综合实验1号楼409B
联系方式:+86 411 84706213
电子邮箱:yangl@dlut.edu.cn
Microscopic damage mechanisms of fibre reinforced composite laminates subjected to low velocity impact
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论文类型:期刊论文
发表时间:2016-01-01
发表刊物:COMPUTATIONAL MATERIALS SCIENCE
收录刊物:SCIE、EI
卷号:111
页面范围:148-156
ISSN号:0927-0256
关键字:Fibre reinforced composite; Low velocity impact; Damage mechanisms; Multiscale modelling; Finite element method (FEM)
摘要:This paper presents an integrated multiscale model for the simulation of fibre reinforced polymeric composite laminate subjected to low velocity impact. The multiscale model is based on the embedded cell method, with detailed microstructure embedded into the macro laminate beneath the impact point, and a transition zone is introduced to link these two scales. Damage model is considered for the fibres and plastic behaviour for the matrix, and cohesive elements are used for the simulation of interface delamination. Both unidirectional and layup embedded cells are considered in the simulation so as to reveal the impact damage mechanisms from monolayer to layup levels. The simulation results indicate matrix cracking is the first damage form which occurs at the bottom of the laminate, and then delamination is induced when the matrix crack propagates to the interface, followed by fibre pull-out and fibre breakage. The simulation results are compared with available experimental results from literatures, with good agreements achieved between them on the damage morphologies. Thus the ability of the presented multiscale model to reveal the damage mechanisms of composite laminate under low velocity impact is validated. (C) 2015 Elsevier B.V. All rights reserved.