CRH2A型动车组缓冲梁结构焊接残余应力的有限元模拟*

朱瑞栋, 董文超, 林化强, 陆善平, 李殿中

FINITE ELEMENT SIMULATION OF WELDING RESIDUAL STRESS FOR BUFFER BEAM OF CRH2A HIGH SPEED TRAIN

ZHU Ruidong, DONG Wenchao, LIN Huaqiang, LU Shanping, LI Dianzhong

表2 拟合的双椭球热源模型参数

Table 2 Fitting parameters for double ellipsoid heat source model

Process Qf / (W·mm-3) Qr / (W·mm-3) af / mm ar / mm b / mm c / mm Q / W HW1 14.3 17.2 3 5 4 8 5040 HW2 9.7 14.6 4 6 4 5 4767