超声振动对钛合金铆钉压铆力的影响

摘要

To solve the forming difficulties of titanium-alloy and large-diameter rivet, ultrasonic vi-bration is introduced to pressure riveting process. The experiment and simulation analysis methods are used to NAS1097U5-6 titanium alloy rivet. The research shows that ultrasonic vibration can effectively reduce deforma-tion resistance of the rivet material by 20 percentage, and the effect is more apparent with the increase of amplitude. Also the technology doesn’t change the material property. Comparing with the experimental data, the simulation analysis can effectively apply to ultrasonic vibration aided riveting process and establish the foundation for future study of technical parameters.%针对钛合金和大直径铆钉铆接困难的问题，在压铆工艺上引入超声振动激励装置。以NAS1097U5-6钛合金铆钉为对象，采用试验与仿真结合的分析手段。研究表明：超声振动技术能有效降低铆钉材料变形抗力20%，并随着振幅的增加其降低效果更明显，且未改变材料性能；通过仿真与试验数据的对比，认定了仿真分析手段的有效性，为后续超声振动辅助铆接工艺参数仿真研究奠定基础。针对钛合金和大直径铆钉铆接困难的问题，在压铆工艺上引入超声振动激励装置。以NAS1097U5-6钛合金铆钉为对象，采用试验与仿真结合的分析手段。研究表明：超声振动技术能有效降低铆钉材料变形抗力20%，并随着振幅的增加其降低效果更明显，且未改变材料性能；通过仿真与试验数据的对比，认定了仿真分析手段的有效性，为后续超声振动辅助铆接工艺参数仿真研究奠定基础。