玻璃钢/复合材料Issue(11)：12-18,7.
含初始脱粘缺陷复合材料加筋壁板渐进压溃过程的数值模拟
NUMERICAL SIMULATION ON PROGRESSIVE COLLAPSE PROCESS OF COMPOSITE STIFFENED PANEL WITH INITIAL DEBONDING DEFECT
摘要
Abstract
A numerical analysis model was established to study the progressive collapse behavior of composite stiffened panel with initial debonding defect.Three typical intralaminar damage modes including fiber failure,matrix failure and fiber-matrix shear failure were considered in the model.The user-defined material subroutine VUMAT was used to distinguish the in-plane failure types and to degrade the corresponding material properties.The Virtual Crack Closure Technique was applied to calculate the strain energy release rate of the interlaminar crack front and the onset of debond propagation was determined using the B-K mixed-mode criterion.The buckling and postbuckling processes up to collapse of the panel under compressive load were quasi-static solved by the explicit dynamic method.The reasonability and validity of the model were verified by the good agreement between the numerical analysis result and the literature's experimental and numerical results,and the damage evolution processes and the progressive collapse behavior of the debonded panel were investigated in detail.关键词
脱粘缺陷/复合材料/加筋壁板/后屈曲/压溃/损伤演化Key words
debonding defect/composite/stiffened panel/post-buckling/collapse/damage evolution分类
通用工业技术引用本文复制引用
邹华民,崔向斌,任明法,常鑫..含初始脱粘缺陷复合材料加筋壁板渐进压溃过程的数值模拟[J].玻璃钢/复合材料,2017,(11):12-18,7.基金项目
国家自然科学基金(11372058) （11372058）
973国家重点基础研究发展计划(2014CB046506,2014CB049000) （2014CB046506,2014CB049000）
