温度对气缸盖应力分布影响的研究

摘要

Based on the steady temperature field calculation,the following issues are studied using finite element method:(1)Thermal stress distribution of cylinder head with constant material properties;(2)The influence on thermal,mechanical and combined stress distribution of cylinder head caused by change of material properties under high temperature.SDRCs I-DEAS software is used to build the model and do the calculation.%采用有限元法，在气缸盖稳态温度场计算的基础上，重点研究了以下几个问题：1)不考虑材料特性变化时气缸盖的温度应力分布规律；2)高温下，材料特性的变化对温度应力、机械应力、综合应力分布的影响规律。得到的结论有利于提高人们对气缸盖强度可靠性的认识。文中建模及计算采用了SDRC公司的I-DEAS软件。