导向臂空气悬架结构有限元仿真与试验验证

通过UG软件建立了悬架结构的三维模型,在此基础上,应用HyperMesh建立了结构的有限元模型;并在ANSYS-Workbench中对其进行了3种极限工况下的静强度校核,验证了结构的强度。通过采用滤波白噪声建立路面时域模型作为动力学仿真的路面输入,在ADAMS软件中,进行动力学分析,得到在该路面输入作用下的载荷时间历程曲线;在N-Code DesignLife软件中,运用线性累计损伤准则对结构进行了疲劳寿命的预测,得到结构在随机载荷下的寿命及损伤分布。此外,通过与企业项目合作,在疲劳试验机下对悬架结构部件做了耐久性台架试验,检验在受到近似随机载荷作用下悬架结构的使用寿命。

Finite Element Simulation and Experimental Verification of Air Suspension Structure of Guide Arm

The three-dimensional model of the suspension structure is established by UG software.Based on this,the finite element model of the structure is established by using HyperMesh software.The static strength check under three extreme conditions is carried out in ANSYS-Workbench and the strength of the structure is verified.By using filtered white noise to establish the road surface time domain model as the road surface input for dynamic simulation,the dynamics analysis in ADAMS software is used to obtain the load time history curve under the input of the road surface;the linearity is applied in N-Code DesignLife software.The cumulative damage criterion predicts the fatigue life of the structure,and the life and damage distribution of the structure under random load are obtained.In addition,through the cooperation with the enterprise project,a durability bench test is carried out on the suspension structural components under the fatigue testing machine to test the service life of the suspension structure under the action of the approximate random load.