基于有限元的缸盖低周疲劳寿命仿真分析

摘要

The authors modify the coffin-manson model and analyze the machine model to get the temperature field and stress field distributions of the cylinder head through the finite element method. They use the means of sub-model for further analysis of the combustion chamber, make the simulation calculation of the low cycle fatigue life of the cylinder head combustion chamber under the engine typical working conditions, and find out the main influence factors.%对cofiin-manson模型进行修正，通过有限元的方法对整机模型进行分析，得到缸盖的温度场及应力场分布；运用子模型的方法进一步分析缸盖燃烧室部分，针对发动机的典型工况仿真分析缸盖燃烧室的低周疲劳寿命，并找出主要影响参数。