基于Adams/ncode整车车架疲劳寿命分析

Fatigue Life Analysis of Vehicle Frame Based on Adams/ncode

车架作为货车的主要承载部件,承担来自货厢与货物的载荷,同时将该载荷通过悬挂系统传递到车桥和地面,不平的地面又通过轮胎和悬挂系统将载荷反馈到车架上,导致车架受力情况非常复杂,车架的破坏形式不仅有静强度破坏,还存在疲劳破坏。通过Adams建立整车动力学模型完成悬架与车架应力点的选取,建立路面工况,输出整车载荷谱。在寿命分析软件ncode中,结合有限元软件Ansys,对整车车架进行三工况下的静力分析,在ncode导入整车载荷谱的rsp格式,输出满载工况下车架疲劳寿命云图。

The frame,as the main load-bearing part of the mine car,bears the load from the freight car and the cargo,and transmits the load to the bridge and the ground through the suspension system,the uneven ground will feed the load to the frame through the tire and suspension system,which results in the complex stress situation of the frame,the failure form of the frame not only has the static strength failure,but also has the fatigue failure.The whole vehicle dynamic model is established by Adams to select the stress points of suspension and frame,establish the road conditions and output the whole vehicle load spectrum.In the life analysis software ncode,combined with the finite element software ANSYS,the static analysis of the vehicle frame under three working conditions is carried out.