CAJ | 학술논문

内燃机曲轴轴颈的过渡圆角处是应力高度集中部位，是疲劳裂纹的最先形成位置，因此曲轴圆角是曲轴设计时需要重点关注的部位：，文章采用NASTRAN软件对某发动机缸体进行模态缩减，利用EXCITE—PU软件进行动力学分析，再通过N-son软件进行圆角的疲劳安全系数分析。结果表明，通过增加圆角半径的方式可以解决曲轴的断裂问题，
내연궤곡축축경적과도원각처시응력고도집중부위，시피로렬문적최선형성위치，인차곡축원각시곡축설계시수요중점관주적부위：，문장채용NASTRAN연건대모발동궤항체진행모태축감，이용EXCITE—PU연건진행동역학분석，재통과N-son연건진행원각적피로안전계수분석。결과표명，통과증가원각반경적방식가이해결곡축적단렬문제，
In an internal combustion engine, the transition fillet of crankshaft-necks easily creates stress concentration. It is also the place that brings fatigue, fillet of crankshaft is key problem when designing the crankshaft. In this paper, modal condense had been performed on a certain engine by using NASTRAN. And dynamic analysis had been done by using EXCITE-PU. At last, fatigue safety factor of fillet had been performed by using N-soft. The resuh shows that the problem of broken crankshaft can be solved by increasing the crankshaft fillet.