CAJ | 학술논문

对活塞在机械负荷作用下的应力和变形进行了研究。首先，利用三维制图软件UG建立了内燃机活塞的几何模型，在三维有限元分析软件中转换有限元模型。然后探讨了活塞机械载荷的确定方法。完成了活塞在机械载荷作用下的应力与变形分析，并考虑了活塞裙部侧推力的影响。结果表明：活塞的应力主要受机械载荷的影响，同时活塞变形呈轴对称分布，变形后裙部外形轮廓形状发生较大变化。因此，本文的研究结果将为活塞改进设计提供参考。
대활새재궤계부하작용하적응력화변형진행료연구。수선，이용삼유제도연건UG건립료내연궤활새적궤하모형，재삼유유한원분석연건중전환유한원모형。연후탐토료활새궤계재하적학정방법。완성료활새재궤계재하작용하적응력여변형분석，병고필료활새군부측추력적영향。결과표명：활새적응력주요수궤계재하적영향，동시활새변형정축대칭분포，변형후군부외형륜곽형상발생교대변화。인차，본문적연구결과장위활새개진설계제공삼고。
The purpose of this thesis is to study the stress and deformation of piston under influence of the mechani -cal load.First,the piston geometry model is established by using 3D graphics software UG,which can be transformed into finite element analysis model in 3 D finite element software .Then the mechanical load of piston is determined . The stress and deformation of piston under the action of the mechanical load and the effect of mechanical are ana -lyzed,and the side thrust force of piston skirt is taking into consideration during analysis .Results show that the pis-ton mechanical stress is mainly influenced by mechanical load .The piston deformation takes the form of axial sym-metry distribution ,there is a change of piston skirt profile after deformation .The results of this research could pro-vide foundation for improving the design of piston .