To study the self-piercing-through riveting technology,the finite element simulation model of self-piercing-through riveting process was developed and the process experiments were carried out to explore the effect of rivet length and bottom plate thickness on me-chanical performance of aluminum/polycarbonate self-piercing-through riveting joint.The effect of preheating temperature of PC plate on the crack of riveting forming was analyzed.The results show that the process of self-piercing-through technology can be divided into four stages:pressing,piercing the upper plate,piercing the lower plate and forming.Both the failure load and energy absorption of the self-piercing-through riveting joint increase with the increase of the rivet length and the bottom plate thickness.Thermal treatment not only con-strains crack generation but also improves the mechanical properties of the joint.The maximum failure load of the joint after preheating treatment is increased by 26.21%compared with that of the specimen after normal temperature treatment.
关键词
穿透式自冲铆接接头/成形工艺/铆接工艺参数/力学性能
Key words
self-piercing-through riveting joint/forming process/riveting process parameters/mechanical property
维普
万方数据