摘要
基于晶体塑性有限元方法(CPFEM)结合形状因子与临界距离控制生成的三维晶体塑性代表体积单元(CPRVE)模型,模拟了304不锈钢极薄箔材的单轴拉伸过程。将代表性体积单元(RVE)模型的单轴拉伸结果与拉伸实验结果进行匹配,标定了304不锈钢极薄箔材的晶体塑性参数,分析了晶粒个数和晶粒内单元数对RVE模型的影响。结果表明,包含512个随机取向的晶粒,每个晶粒内约有125个单元的RVE模型可以准确地体现304不锈钢极薄箔材的宏观力学性能。使用标定的晶体塑性参数模拟单轴拉伸应变为0.54时的织构演化,模拟结果与EBSD测得的织构演化结果相吻合,证明了标定的晶体塑性参数的准确性。
Based on the by three-dimensional crystal plastic representative volume element(CPRVE)model generated by crystal plastic fi-nite element method(CPFEM)combined with the shape factor and critical distance control,the uniaxial tensile process of 304 stainless steel ultra-thin foil was simulated.The uniaxial tensile results of the representative volume element(RVE)model were matched with the tensile test results,the crystal plasticity parameters of 304 stainless steel ultra-thin foil were calibrated,and the influence of the number of grains and the number of intra-grain cells on the RVE model was analyzed.The results show that the RVE model contains about 512 randomly ori-ented grains with 125 cells in each grain can accurately represent the macroscopic mechanical properties of 304 stainless steel ultra-thin foil.Using the calibrated crystal plastic parameters to simulate texture evolution at uniaxial tensile strain of 0.54,the simulation results are well accord with the EBSD measured texture evolution results,which proves the accuracy of the calibrated crystal plasticity parameters.
作者
范婉婉
王涛
侯洁
韩建超
郭雄伟
张斌
任忠凯
FAN Wan-wan;WANG Tao;HOU Jie;HAN Jian-chao;GUO Xiong-wei;ZAHNG Bin;REN Zhong-kai(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,China;School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)
出处
《塑性工程学报》
CAS
CSCD
北大核心
2019年第4期268-273,共6页
Journal of Plasticity Engineering
基金
国家自然科学基金青年科学基金资助项目(51804215)
中国博士后科学基金资助项目(2019M651074)
山西省科技重大专项(20181102015)
太原市科技重大专项(170203)
山西省青年基金资助项目(201801D221221)
关键词
晶体塑性有限元
304不锈钢极薄箔材
代表体积单元
参数标定
crystal plastic finite element
304 stainless steel ultra-thin foil
representative volume element
parameter calibration
