摘要
先进高强双相钢板料温成形的本构模型参数识别,是提高塑性变形行为仿真准确度的关键。通过建立基于拉丁超立方抽样法和Spearman秩相关性分析法的本构模型参数敏感度分析方法,进而实现了参数敏感度的整体性分析。然后结合敏感度分析结果、DP780钢单向拉伸试验以及拉伸过程有限元模拟,构建了不同温度下的距离函数和材料本构参数之间的响应面模型。将本构参数识别问题归结为求解最小距离函数问题,利用遗传算法进行优化计算,最终获得了不同温度下的DP780钢井上胜郎本构模型参数。结果表明,建立的本构参数识别方法较好地满足本构模型精度要求。
The parameters identification of constitutive model for the sheet warm forming of advanced high strength dual phase steel is the key to improve the simulation accuracy of plastic deformation behavior.By establishing the parameter sensitivity analysis method of constitutive model based on the Latin hypercube sampling method and Spearman rank correlation analysis method,the overall analysis of parameter sensitivity was realized.Then,combining the sensitivity analysis results,the unidirectional tensile test of DP780 steel and the finite element simulation of the tensile process,the response surface model between the distance function and the material parameters in the constitutive model under different temperatures was constructed.The parameter identification problem in the constitutive model was reduced to solving the minimum distance function problem.The optimization algorithm is used for the optimization calculation,and the parameters of the Inoue Sin constitutive model for of DP780 steel under the different temperatures were finally obtained.The results show that the parameter identification method in the constitutive model can meet the requirement of constitutive model accuracy.
作者
王凯迪
李迪
冷杨松
付秋涛
徐家川
姜宁
WANG Kaidi;LI Di;LENG Yangsong;FU Qiutao;XU Jiachuan;JIANG Ning(School of Transportation and Vehicle Engineering,Shandong University of Technology,Zibo 255049,Shandong,China;School of Automobile Service,Linyi Vocational University of Science and Technology,Linyi 276000,Shandong,China)
出处
《机械科学与技术》
CSCD
北大核心
2021年第9期1432-1438,共7页
Mechanical Science and Technology for Aerospace Engineering
基金
山东省自然科学基金项目(ZR2011EL037)。
关键词
先进高强度双相钢
温成形
本构模型
参数识别
advanced high strength duplex steel
warm forming
constitutive model
parameter identification
