PVA-ECC抗冲击性能数值模拟研究  

Numerical Simulation Study of the Impact Resistance Performance of PVA-ECC

作　　者：罗银剑 李秀地 LUO Yin-jian;LI Xiu-di(Department of Military Facilities,Army Logistics Academy,Chongqing 401311,China)

机构地区：[1]陆军勤务学院军事设施系,重庆401331

出　　处：《当代化工》2022年第3期713-717,722,共6页Contemporary Chemical Industry

基　　金：重庆市院士专项基金(项目编号:cstc2020yszx-jscxX0007)。

摘　　要：评估了有限元软件LS-DYNA中常用混凝土动态本构模型及用户自定义混凝土模型的优缺点,通过总结分析得出自定义KF模型能够较为全面反映混凝土动态在冲击荷载下动力响应,基于PVA-ECC冲击试验数据采用线性回归的方法对KF模型的参数进行修正并模拟了PVA-ECC冲击试验。数值模拟结果表明:参数修正后的KF模型与试验结果吻合度较高,能够较真实地反映PVA-ECC在冲击荷载下动力响应,可为PVA-ECC在抗爆抗冲击领域的应用与研究提供参考。The advantages and disadvantages of common concrete dynamic constitutive model and user-custom concrete model in LS-DYNA were evaluated. The summary analysis results show that the custom KF model can reflect the dynamic response under impact load, The parameters of the KF model were corrected and simulated using the PVA-ECC impact test method based on the PVA-ECC impact test data. Numerical simulations show that the parameter-modified KF model agrees well with the test results, it can truly reflect the dynamic response of PVA-ECC in impact load, which can provide some reference for the application and research of PVA-ECC in the field of anti-explosive and impact resistance.

关 键 词：动态本构模型 冲击压缩 劈裂拉伸 数值模拟 

分 类 号：TU513[建筑科学—建筑技术科学]