摘要
为了解决某型号航空活塞发动机在进行功率提升设计时出现的失效问题,根据失效原因设定优化目标为活塞最高温度与最大变形量优化幅度不低于5%,并据此开展活塞结构优化设计。建立并验证了活塞热机耦合仿真模型,通过活塞热机耦合仿真模型研究了结构因素对活塞热机耦合性能的影响,基于研究成果对活塞结构进行优化设计,提出了针对活塞结构的优化设计方案。与原始活塞相比,优化设计后的活塞最高温度优化幅度为7.21%,最大变形量优化幅度为6.27%,达到优化目标。
In order to solve the failure of a certain type of aero-piston engine during the design of power enhancement,the optimization range target was set as no less than 5%of the maximum temperature and maximum deformation of the piston according to the cause of failure.And accordingly,the optimization design of the piston structure was carried out.A simulation model of piston thermo-mechanical coupling was established and verified.The influence of structural factors on the performance of piston thermo-mechanical coupling was investigated through the simulation model of piston thermo-mechanical coupling.Based on the research results,the optimal design of piston structure was carried out,and the optimal design scheme for the piston structure was proposed.The maximum temperature of the optimized piston is optimized by 7.21%,and the maximum deformation is optimized by 6.27%,compared with those of the original piston,which meets the optimization targets.
作者
缪奇锋
符字简
李伟杰
刘震涛
MIAO Qifeng;FU Zijian;LI Weijie;LIU Zhentao(Power Machinery and Vehicular Engineering Institute,Zhejiang University,Hangzhou 310027,China)
出处
《内燃机工程》
北大核心
2025年第5期130-138,共9页
Chinese Internal Combustion Engine Engineering
关键词
航空活塞发动机
铝合金活塞
热机耦合
结构优化设计
aero-piston engine
aluminium alloy piston
thermo-mechanical coupling
structural optimization design
