基于J-C本构模型的金属拉伸实验模拟研究  

Simulation Study of Metal Tensile Experiment Based on J-C Constitutive Model

作　　者：王子骏 王子文 Zijun Wang;Ziwen Wang(Zhongke Certification Technology Services(Guangzhou)Co.,Ltd.,Guangzhou,Guangdong 510000)

机构地区：[1]中科认证技术服务(广州)有限公司,广东广州510000

出　　处：《新疆钢铁》2024年第2期31-33,共3页Xinjiang Iron and Steel

摘　　要：本研究基于J-C本构模型对金属拉伸实验进行了模拟研究。首先,参考国家标准GB/T 228.1-2021《金属材料拉伸实验第1部分:室温试验方法》制作实验检材,并进行拉伸实验。其次,利用线性回归对实验数据进行求解,计算出Abaqus内J-C本构模型所需的参数数值。接着将获得的材质参数输入Abaqus有限元分析软件内进行材质的选择和模拟模型的建立,并施加一端固定约束,一端线性位移的边界条件。最后,将模拟求得的应力与应变输出后绘图,与实验中采集的应力与应变进行比对分析。研究结果表明,基于J-C的本构模拟对于金属材料的单轴拉伸实验具有较好的还原性,其模拟结果与真实数据较为接近,且应力集中和断裂点判断较为准确。This study simulated metal tensile experiments based on the J-C constitutive model.Firstly,refer to the national standard GB/T 228.1-2021"Metallic materials-Tensile testing-Part 1:Room temperature testing methods"to prepare test specimens and conduct tensile tests.Secondly,linear regression is used to solve the experimental data and calculate the parameter values required for the J-C constitutive model within Abaqus.Next,input the obtained material parameters into Abaqus fi-nite element analysis software for material selection and simulation model establishment,and apply boundary conditions with one end fixed constraint and one end linear displacement.Finally,the simulated stress and strain output will be plotted and compared with the stress and strain collected in the experiment for analysis.The research results indicate that the constitutive simulation based on J-C has good reducibility for uniaxial tensile experiments of metal materials,and its simulation results are close to real data,and the determination of stress concentration and fracture point is more accurate.

关 键 词：本构 Johnson-Cook 金属拉伸 

分 类 号：TG115[金属学及工艺—物理冶金]