基于热机耦合的缸套变形分析

Deformation Analysis of the Cylinder Liner based on Mechanical-thermal Coupling

采用热机耦合分析方法,对柴油机气缸套进行了温度场分析,并将温度场用于耦合场的计算,分析了不同载荷对气缸套变形的影响。计算结果表明:气缸套最高温度为230.6℃,出现在缸套内壁顶部;缸套变形总体符合要求。热载荷是气缸套变形的主导因素,控制缸套变形时应主要控制热载荷引起的变形,对指导气缸套的设计具有重要意义。

The temperature field of the cylinder liner was analyzed via the mechanical-thermal coupling method. The coupling field based on the thermal analyzing results was calculated. The influence of the different load on the deformation was analyzed. The calculated results indicated that the maximum temperature of the cylinder liner was 230.6℃, which appeared on the upper part of the inner face in the cylinder liner. Over all, the deformation of the cylinder liner satisfied the requirement. The thermal load was the most important factor to the deformation of the cylinder liner. The results were very useful for the design of the cylinder liner.