• 先进材料加工工程 •

### 基于动态磨损模型的汽车覆盖件模具磨损数值模拟研究

1. 1.河北科技大学河北省材料近净成形技术重点实验室，石家庄，050018
2.河北省汽车冲压模具技术创新中心，泊头，062150
3.河北省汽车冲压模具工程研究中心，泊头，062150
4.河北省汽车冲压模具产业技术研究院，泊头，062150

• 出版日期:2024-03-25 发布日期:2024-04-23
• 通讯作者: 穆振凯（通信作者），男，1990年生，讲师、博士。研究方向为精密成形技术等。E-mail:muzhenk1229@163.com。
• 作者简介:赵妍洁，女，1998年生，硕士研究生。研究方向为精密成形技术。
• 基金资助:
国家自然科学基金（52205353）；河北省高层次人才项目(A202101016)；河北省创新能力提升计划（225A2201D）

### Numerical Simulation of Die Wear of Automobile Covering Parts Based on Dynamic Wear Model

ZHAO Yanjie1;ZHANG Shuangjie1,3,4;MU Zhenkai1,2;WANG Wei1,3;YAN Huajun1，4;MA Shibo1，3;ZHANG Yonghui1

1. 1.Hebei Key Laboratory of Material Near-net Forming Technology,Hebei University of Science
and Technology,Shijiazhuang,050018
2.Hebei Automobile Stamping Die Technology Innovation Center,Botou,Hebei,062150
3.Hebei Automobile Stamping Die Engineering Research Center,Botou,Hebei,062150
4.Hebei Automobile Stamping Die Industrial Technology Research Institute,Botou,Hebei,062150

• Online:2024-03-25 Published:2024-04-23

Abstract: In order to predict the service life of automotive cover dies, the Archard wear model was optimized to establish a dynamic wear model. The model coupled the dynamic wear coefficient and the surface hardness change curve. This model converted the wear coefficient K into a dynamic wear coefficient that varied with contact pressure and relative slip velocity, the surface hardness was converted into a dynamic hardness curve that varied with the depth of wear. Then, the Python language was used to develop the ABAQUS software for a second time, and the dynamic wear model was coupled to the finite element simulation, and the wear calculation of the die of automotive covering parts considering the wear coefficient and the depth change of the hardened layer was realized. By comparing and analyzing the dynamic wear evolution law of the typical positions of the convex and concave die during the forming processes, and taking the maximum wear depth of the die as the failure criterion, the service life of the stamping die of the aluminum alloy cover is 635 428 times. The main wear of the die was concentrated near the die clamping line and at the large rounded corner, and these positions need to be repaired and debugged in actual production, which may extend the service life of the die effectively.