摘要
对不同工况下气缸盖的强度和变形情况进行了研究,建立了气缸盖—气缸垫—气缸套—机体的组合体三维实体模型,进行了网格划分及仿真分析。考虑了气缸盖与气缸垫之间接触非线性因素以及气缸垫的材料非线性因素对气缸盖刚强度的影响,在进行正常工况机械强度计算的基础上,缸内最高燃烧压力增加为18MPa和20MPa工况下,对气缸盖的强化潜力进行了对比分析,分析了强化前后工程中比较关注部位的应力分布以及气缸盖底板火力面的变形分布情况。
The strength and deformation of cylinder head under different conditions were researched, the three-dimensional solid model of cylinder head-gasket-liner-block composites was built and finally mesh generation and simulation analysis were carried out. The non-linear factor of cylinder head and gasket contact, as well as that of gasket material, was taken into consideration in the calculation. Based on the mechanical intensity calculation of normal conditions, the intensifying potentials of cylinder head were analyzed under the condition that the maximum cylinder pressure increased to 18 MPa and 20 MPa respectively. The stress distribution of largely concerned sites and the deform- ation of cylinder head fire surface were analyzed before and after strengthening.
出处
《车用发动机》
北大核心
2011年第6期20-23,27,共5页
Vehicle Engine
关键词
气缸盖
强度
刚度
有限元法
非线性
cylinder head
strength
stiffness
finite element method
nonlinearity
作者简介
徐岩（1982-），女，硕士，主要研究方向为内燃机现代设计技术及项目管理；xuyan．brenda@163．com。
