转向架构架齿轮箱吊座服役行为试验及数值模拟仿真  

Experimental study and numerical simulation of service behavior of welded joints in standard bogie frame gear box

作　　者：林鹏 LIN Peng(CRRC Qingdao Sifang Co., Ltd., Qingdao 266111, China)

机构地区：[1]中车青岛四方机车车辆股份有限公司,山东青岛266111

出　　处：《电焊机》2018年第3期331-336,共6页Electric Welding Machine

摘　　要：针对转向架上齿轮箱吊座的疲劳寿命进行模拟计算,模拟条件分别为考虑残余应力的影响和不考虑残余应力,并且通过疲劳试验验证仿真结果。结果发现,齿轮箱吊座内腔背面的焊缝为连接焊缝,对吊座的疲劳寿命影响不大,齿轮箱吊座经历1×107次循环次数后,经磁粉探伤和渗透探伤后均未发现裂纹。the fatigue life of gearbox on bogie frame was simulated and calculated,the simulation conditions were the influence of residual stress was taken into account and the residual stress was not taken into account,and the simulation results were verified by fatigue test. The results showed that the weld on the back of the inner cavity of the gearbox hanger bracket is not a critical weld, which has little effect on the fatigue life of the hanger bracket. Mter 1×10^7 cycles,no cracks were found after magnetic particle inspection and liquid penetrant inspection.

关 键 词：转向架 疲劳寿命 模拟计算 残余应力 

分 类 号：TG407[金属学及工艺—焊接] U270.3[机械工程—车辆工程]