锻压技术

车用铝合金AA5182温热成形研究

英文标题：Research on warm forming for AA5182 aluminum alloy used in automobile

作者：公丕昊陈劼实杨磊

单位：上海交通大学国家模具CAD工程研究中心上海 200030

分类号：TG146

出版年,卷(期):页码：2019,44(5):136-141

摘要：

基于MK模型分别结合Hill48、Barlat89和YLD2000屈服准则，预测了AA5182铝合金在温热条件下的成形极限。在不同温度下进行AA5182铝合金的温热成形极限实验，获得了材料在不同温度下的成形极限实验数据。比较分析实验结果与预测结果，表明Barlat89屈服准则比其他两个屈服准则更适用于预测AA5182铝合金在温热条件下的成形极限。同时，分析了温度和应变速率敏感指数的变化对成形极限预测结果的影响。结果表明，材料成形极限会随着温度的升高或者应变速率敏感指数的增大而增加。应变速率敏感指数的变化对预测得到材料成形极限的形状也会产生影响。

The forming limit of AA5182 aluminum alloy in warm condition was predicted based on MK model combined with Hill48, Barlat89 and YLD2000 yield criteria, respectively, and the warm forming limit experiments of AA5182 aluminum alloy under different temperatures were conducted to obtain the forming limit data of material at different temperatures. Comparing the experimental result with the predicted result, it is considered that the Barlat89 yield criterion is more appropriate for predicting forming limit of AA5182 aluminum alloy in warm condition than other two yield criteria. Meanwhile, the influences of temperature and strain rate sensitivity index on the predicted result of [JP3]forming limit were analyzed. The result shows that the forming limit of material increases with the increasing of temperature and strain rate sensitivity index. Moreover, the strain rate sensitivity index has influence on the shape of the predicted forming limit of material.

基金项目：

作者简介：公丕昊(1993-)，男，硕士研究生 Email：Gutentag0004@sjtu.edu.cn 通讯作者：陈劼实(1979-)，女，博士，副研究员 Email：chenjieshi@sjtu.edu.cn

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