7FDL-16柴油机气缸盖热结构耦合应力分析  

7FDL-16 Diesel Engine Cylinder Head Thermal Structure Coupling Stress Analysis

作　　者：李明海[1] 庄斌 LI Minghai;ZHUANG Bin(School of Locomotive and Rolling Stock Engineering,Dalian Jiaotong University,Dalian 116028,China)

机构地区：[1]大连交通大学机车车辆工程学院,辽宁大连116028

出　　处：《大连交通大学学报》2024年第2期63-67,共5页Journal of Dalian Jiaotong University

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.

关 键 词：柴油机 气缸盖 热结构耦合应力分析 热应变 

分 类 号：TK423[动力工程及工程热物理—动力机械及工程]