摘要
为克服整体法进行焊接结构强度设计时造成的母材强度过剩,焊缝强度不足的问题,建立了包括焊缝在内的新型双轴宽轮距转向架构架的有限元模型,采用Hyperworks中的Optistruct模块进行静强度分析,在动力学软件Adams中建立包括转向架在内的整车动力学仿真模型,根据实际运营情况仿真得到用于疲劳计算的各关键点的时间载荷历程。考虑缺口应力和应力修正对焊缝的影响,对焊缝进行疲劳损伤分析,并对关键焊缝参数进行了敏感性分析,从分析结果可以看出焊接熔深和焊接厚度对于焊缝的疲劳损伤的影响是决定性的,焊缝的倾斜角度的影响力几乎为零,缺口尺寸对焊缝疲劳损伤的影响也尤为关键。
In order to overcome the problems of excess strength of base metal and insufficient strength of weld seam caused by the whole method in strength design of welded structure,a new finite element model of bogie frame with double axle and wide track width,including weld seam,was established. The static strength analysis was carried out by using the Optistruct module in Hyperworks,and the vehicle dynamics simulation model including the bogie was set up in the dynamic software Adams. According to the actual operation,the time load history of each key point for fatigue calculation was obtained by simulation. Considering the influence of notch stress and stress correction on the weld,the fatigue damage of the weld was analyzed,and the sensitivity of key weld parameters was analyzed. The results can be seen from the analysis that the influence of the weld penetration and weld thickness on the fatigue damage of the weld is decisive,and the influence of weld inclination angle is almost zero,and the effect of the notch size on the fatigue damage of weld is particularly critical.
作者
文孝霞
孔得旭
杜子学
WEN Xiaoxia;KONG Dexu;DU Zixue(School of Mechanotronics&Vehicle Engineering,Chongqing Jiaotong University,Chongqing 400074,China)
出处
《重庆交通大学学报（自然科学版）》
CAS
CSCD
北大核心
2020年第1期115-119,共5页
Journal of Chongqing Jiaotong University(Natural Science)
基金
国家自然科学基金项目(51475062)
关键词
车辆工程
有限元模型
时间载荷历程
焊缝参数
敏感性分析
vehicle engineering
finite element model
the time load process
weld parameters
sensitivity analysis
