外推法
流量(数学)
硬化(计算)
可塑性
实验数据
表征(材料科学)
物流
机械工程
机械
材料科学
计算机科学
数学
工程类
复合材料
数学分析
物理
纳米技术
统计
生物
图层(电子)
生态学
作者
Max Böhnke,F. Kappe,Mathias Bobbert,Gerson Meschut
出处
期刊:MP MATERIALPRUEFUNG - MP MATERIALS TESTING
[De Gruyter]
日期:2021-06-01
卷期号:63 (6): 493-500
被引量:16
摘要
Abstract The predictive quality of numerical simulations for mechanical joining processes depends on the implemented material model, especially regarding the plasticity of the joining parts. Therefore, experimental material characterization processes are conducted to determine the material properties of sheet metal and generate flow curves. In this regard, there are a number of procedures which are accompanied by varying experimental efforts. This paper presents various methods of determining flow curves for HCT590X as well as EN AW-6014, including varying specimen geometries and diverse hardening laws for extrapolation procedures. The flow curves thus generated are compared considering the variety of plastic strains occurring in mechanical joining processes. The material data generated are implemented in simulation models for the joining technologies, clinching and self-piercing riveting. The influence of the varied methods on the predictive accuracy of the simulation model is analysed. The evaluation of the differing flow curves is achieved by comparing the geometric formation of the joints and the required joining forces of the processes with experimentally investigated joints.
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