微型摆式内燃机有限元分析与散热结构设计  

The Heat-Structure Coupling Analysis and Research of Micro-Free Piston Swing Engine

作　　者：朱峰[1] 赵旭[2] 林吉靓[1] 

机构地区：[1]开封大学机械与汽车工程学院,河南开封475004 [2]辽宁省机械研究院有限公司,辽宁沈阳110032

出　　处：《机械设计与制造》2014年第5期45-46,49,共3页Machinery Design & Manufacture

基　　金：国家自然科学基金项目(51065019)

摘　　要：研究的对象MFPSE(微型摆式内燃机)体积为132*120,体积的减小致使MFPSE工作温度过高,MFPSE的中心摆和缸体是传递能量和组成燃烧室的重要部件,过大的热负荷将使其局部表面发生热疲劳,加上燃烧气体的腐蚀和气流的冲击,以至最终疲劳破坏。根据MFPSE工作特性利用有限元分析软件对其进行了温度场分析、热—结构耦合分析及干涉分析,得到MFPSE的工作特性,并结合试验样机的工作状况,初步设计了MFPSE的散热结构,并利用分析软件进行了散热效果的虚拟分析,效果良好。The volume of the research object （MFPSE） here is 132＊120. The reduced size of the MFPSE causes higher working temperature. The center pendulum and cylinder of MFPSE are the important parts of the energy transfer and the composition of the combustion chamber, too great thermal load will make its local surface thermal fatigue, and under the effect of corrosion, combustion gas and impact, it will eventually be fatigue failure. The analysis of temperature field, thermal-structure coupling and interference is carried out according to the working characteristics of MFPSE using finite element analysis software. The operating characteristics of MFPSE are found. Combined with the working condition of the experimental prototype , the preliminary design of the heat dissipation structure of MFPSE is finished. And the virtual analysis of heat radiating effect is accomplished using the analysis software.

关 键 词：MFPSE 温度场 应力场 耦合分析 散热 

分 类 号：TH16[机械工程—机械制造及自动化] TM611.2[电气工程—电力系统及自动化]