关键词: 轨道车辆, 铆接过程, 数值模拟, 剪切实验, 复合材料

Abstract: Focus on the research of pulling riveting connections between carbon fiber composite panels, and the riveting process of CR7621 blind rivet commonly used on rail vehicle body was numerically simulated, and using a riveter with riveting process force-displacement detection function for comparative experiment, and the forming situations and mechanical properties of the riveted joints were obtained. Comparative analysis shows that the internal and external forming conditions of numerical simulation are basically consistent with the experimental results, and the deviation of key data such as the diameter of rivet sleeve bulge and the maximum riveting force is within 5%. Further conduct shearing test of the riveted joints on the test machine, the failure form of the joint is that the end of the rivet sleeve is cut off, and the load-displacement curves have good consistency during failure, the average maximum load is 17.7 kN, the average displacement is 5.47 mm. The research can provide support for the application of riveting technology between carbon fiber composite components of rail vehicles.

Key words: rail vehicle, riveting process, numerical simulation, shearing test, composites