基于ANSYS的某活塞热应力分析

Thermal-Stress Analysis Based on ANSYS for the Piston

结合虚拟样机技术和有限元分析技术,使用SolidWorks建立活塞的虚拟样机后,通过SolidWorks与ANSYS的接口,将温度载荷施加在活塞的有限元模型上,得到温度场分布;在对某发动机活塞组进行了结构介绍和理论分析的基础上,采用ANSYS软件建立了活塞组三维有限元模型;基于有限元理论对有限元模型进行仿真计算,确定了热应力和变形集中部位。通过对有限元仿真结果进行分析可以看出,该研究验证了分析的可行性和准确性,能够为活塞进一步的优化设计提供理论依据。

Combining VPT with FEA,builds a virtual prototype of piston of an engine by SolidWorks.Based on the virtual prototype,through the interface between ANSYS and SolidWorks,the temperature loads are applied on the FEA model of piston and the temperature field is obtained.It is performed based on the theoretical analysis for piston components,ANSYS software is applied to establish the 3-D finite element model,and the model is simulated by finite element method.According to the FEM theory,the model is simulated and calculated.Then,the thermal-stress concentrated place is determined.Analyzed the results,it is feasible to analyze the relationship between them by using ANSYS.The results are useful to support the optimum design of the piston.