摘要
通过CATIA软件进行三维建模,利用Space Claim模块提取流体域,在Fluent模块设置流体边界条件并仿真流动,先后导入Ansys Workbench稳态热和静应力分析模块,设置热边界条件和应力载荷,得到气缸盖的温度场以及热结构耦合应力分布云图。热结构耦合应力分析可得:热应变最大处在火力面鼻梁区,最大变形量为0.002 1 mm,应力最大处在两排气门之间的鼻梁区,最大应力值为398 MPa,安全系数为2.71,满足实际结构工作的要求标准。
Three-dimensional modeling was carried out through CATIA software,fluid domain was extracted using Space Claim module,fluid boundary conditions were set in Fluent module,and flow simulation was carried out.Ansys Workbench steady-state thermal and static stress analysis modules were successively introduced to set thermal boundary conditions and stress loads.The temperature field of the cylinder head and the coupled stress distribution of the thermal structure are obtained.The thermal structure coupling stress analysis shows that the maximum thermal strain is in the nasal bridge area of the fire surface,the maximum deformation is 0.0021 mm,the maximum stress is in the nasal bridge area between the two exhaust valves,the maximum stress value is 398 MPa,and the safety factor is 2.71,which meets the requirements of the actual structure work.
作者
李明海
庄斌
LI Minghai;ZHUANG Bin(School of Locomotive and Rolling Stock Engineering,Dalian Jiaotong University,Dalian 116028,China)
出处
《大连交通大学学报》
CAS
2024年第2期63-67,共5页
Journal of Dalian Jiaotong University
关键词
柴油机
气缸盖
热结构耦合应力分析
热应变
diesel engine
cylinder head
thermal structure coupling stress analysis
thermal strain
