基于Gissmo失效模型的6016铝合金板材断裂行为研究及应用

doi:10.3901/JME.2019.18.053

机械工程学报 ›› 2019, Vol. 55 ›› Issue (18): 53-62.doi: 10.3901/JME.2019.18.053

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基于Gissmo失效模型的6016铝合金板材断裂行为研究及应用

梁宾¹, 赵岩¹, 赵清江¹, 范体强¹, 李阳²

1. 中国汽车工程研究院股份有限公司重庆 401122;
2. 重庆凯瑞特种车有限公司重庆 401122

收稿日期:2018-09-03 修回日期:2019-04-28 出版日期:2019-09-20 发布日期:2020-01-07
通讯作者: 赵岩(通信作者),男,1984年出生,博士,高级工程师。主要研究方向为材料工艺仿真模拟。E-mail:zhaoyan@caeri.com.cn
作者简介:梁宾,男,1991年出生。主要研究方向为材料失效模拟、热成型模拟。E-mail:liangbin@caeri.com.cn
基金资助:
重庆市科委资助项目（cstc2015zdcy-ztzx60010）。

On the Prediction of Failure in 6016 Aluminum Alloy Sheet by Gissmo Damage Model

LIANG Bin¹, ZHAO Yan¹, ZHAO Qingjiang¹, FAN Tiqiang¹, LI Yang²

1. China Automotive Engineering Research Institute Co., Ltd., Chongqing 401122;
2. Chongqing CAERI Special Purpose Vehicle Co., Ltd., Chongqing 401122

Received:2018-09-03 Revised:2019-04-28 Online:2019-09-20 Published:2020-01-07

摘要/Abstract

摘要： 准确预测金属板材在成形过程中的失效行为是当前面临的挑战。许多试验表明，金属材料的断裂失效行为伴随着强烈的应变路径依赖性。Gissmo失效模型采用非线性方式计算损伤积累，考虑材料的应力状态对断裂失效应变临界值的影响，适用于预测金属材料在不同应力状态下的断裂行为。以汽车用6016铝合金板材为研究对象，设计六种反映材料不同应力状态的试样，通过试验结合有限元仿真对标的方法，校准Gissmo失效模型中的参数。将Gissmo失效模型用于预测铝合金板材汽车发动机罩内板在冲压过程的断裂失效问题，并对数值模型计算结果进行试验验证。结果表明，与传统成形极限图相比，Gissmo失效模型的计算结果与试验结果更加吻合，铝合金汽车发动机罩内板样件均未出现裂纹区域，表明Gissmo失效模型适合用于准确预测6016铝合金板材的断裂行为。

关键词: 6016铝合金板材, 断裂, 应力状态, Gissmo失效模型

Abstract: The accurate prediction of fracture behavior is a challenge in metal sheets forming analysis. Experimental evidence shows that ductile fracture strongly depends on the stress state and strain path. As a stress state dependent damage model, the Gissmo includes incremental formulation for the description of material instability and localization, and nonlinear calculation of damage accumulation. It could be used to predict the failure of metal material under different load conditions. Six different shaped specimens which reflect different stress state of 6016 aluminum alloy sheets are performed tests. All the experimental processes are reproduced within the finite element simulation to calibrate the Gissmo damage model parameters. The stamping numerical model of hood inner validation results indicates that the Gissmo damage model predicted results is consistent with the experimental results. Moreover, compared with the traditional forming limit diagram, the Gissmo damage model is more suitable to accurately simulate and predict the fracture behavior of 6016 aluminum alloy sheets for several load paths.

Key words: 6016 aluminum alloy sheet, fracture, stress state dependence, Gissmo damage model

中图分类号:

TG146

梁宾, 赵岩, 赵清江, 范体强, 李阳. 基于Gissmo失效模型的6016铝合金板材断裂行为研究及应用[J]. 机械工程学报, 2019, 55(18): 53-62.

LIANG Bin, ZHAO Yan, ZHAO Qingjiang, FAN Tiqiang, LI Yang. On the Prediction of Failure in 6016 Aluminum Alloy Sheet by Gissmo Damage Model[J]. Journal of Mechanical Engineering, 2019, 55(18): 53-62.

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基于Gissmo失效模型的6016铝合金板材断裂行为研究及应用

On the Prediction of Failure in 6016 Aluminum Alloy Sheet by Gissmo Damage Model

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