复合材料层压板冲击后压缩全过程仿真分析  

Simulation Analysis of Whole Process of Compression after Impact of Composite Laminates

作　　者：刘湘云[1] 张赢 李晓龙 朱梦杰 赵征 李梦佳 LIU Xiang-yun;ZHANG Ying;LI Xiao-long;ZHU Meng-jie;ZHAO Zheng;LI Meng-jia(COMAC Shanghai Aircraft Design&Research Institute,Shanghai 201000,China;Shanghai Electro-Mechanical Engineering Institute,Shanghai 201000,China;Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology&Equipment of Zhejiang Province,Zhejiang Normal University,Jinhua 321000,China)

机构地区：[1]中国商飞上海飞机设计研究院,上海201000 [2]上海机电工程研究所,上海201000 [3]浙江省城市轨道交通智能运维技术与装备重点实验室,浙江师范大学,浙江金华321000

出　　处：《航空计算技术》2024年第4期106-109,共4页Aeronautical Computing Technique

基　　金：国家自然科学基金青年基金项目资助(12002315)。

摘　　要：针对复合材料层压板低速冲击数值模拟中将冲击和压缩过程割裂计算的问题,建立了将冲击和压缩两个过程统为一体的数值模拟方法。分别采用显式分析和隐式分析模拟冲击和压缩过程,将层压板冲击后的损伤数据、应力应变数据、位移数据等作为下一步的初始输入进行压缩模拟,并采用三维Hashin失效判据来判断复合材料的初始破坏,并对破坏后的复合材料进行刚度折减,来模拟损伤演化。采用试验标准建立有限元模型对所建立的数值模拟方法进行验证,计算结果与试验对比表明:失效模式一致,剩余强度相对误差满足工程要求。Aiming at the problem of separating the impact and compression processes in the numerical simulation of low-velocity impact of composite laminates,a numerical simulation method that integrates the impact and compression processes is established.Explicit and implicit analyses are used to simulate the impact and compression processes,respectively,and the damage data,stress-strain data and displacement data after the impact of the laminate are used as the initial inputs for the compression simulation in the next step,and the three-dimensional Hashin failure criterion is used to judge the initial damage of the composite material,and the stiffness of the damaged composite material is discounted to simulate the damage evolution.The established numerical simulation method is validated by using the test standard to establish a finite element model,and the comparison between the calculation results and the test shows that:the failure mode is consistent,and the relative error of the residual strength meets the engineering requirements.

关 键 词：复合材料 冲击后压缩 剩余强度 失效准则 全过程仿真 

分 类 号：O242[理学—计算数学]