文献类型：期刊文献

中文题名：SiC_P/6061Al复合材料高温单轴拉伸时相关棘轮行为的细观本构模型

英文题名：Meso-mechanical Constitutive Model for Uniaxial Time-Dependent Ratcheting of SiC_P/6061Al Composites at High Temperature

作者：郭素娟[1];康国政[2];张娟[2];轩福贞[1]

机构：[1]华东理工大学机械与动力工程学院承压系统与安全教育部重点实验室,上海200237;[2]西南交通大学力学与工程学院,成都610031

年份：2014

卷号：38

期号：5

起止页码：99

中文期刊名：机械工程材料

外文期刊名：Materials For Mechanical Engineering

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：中国博士后基金资助项目;上海市博士后科研资助计划项目(2013);国家自然科学基金资助项目(11302079)

语种：中文

中文关键词：高温;复合材料;时相关棘轮行为;细观本构模型

外文关键词：high temperature;;composite;;time-dependent ratcheting;;meso-mechanical constitutive model

摘要：以已有试验研究和细观本构框架为基础,在新发展的非线性随动硬化律中引入反映热恢复效应的修正项,得到了一个新的细观粘塑性循环本构模型;采用该模型对SiCP/6061Al复合材料在高温(300℃)下的时相关单轴拉伸和棘轮行为进行了模拟。结果表明:修正项的引入有效提高了模型对SiCP/6061Al复合材料高温单轴棘轮行为及其时间相关特性的预测能力。
Based on the previous experimental research and meso-mechanical constitutive framework,a new meso-mechanical cyclic visco-plastic constitutive model was obtained by introducing a thermal recovery term into the newly developed non-linear kinematic hardening rule.With the proposed model,the time-dependent monotonic tension and uniaxial ratcheting behaviors of SiCP/6061Al composites at high temperature(300℃)were simulated. The results show that the capability of the proposed model to predict the uniaxial ratcheting of SiCP/6061Al composites and its time-dependent features at high temperature was improved effectively by introducing the thermal recovery term.