摘要
在履带拖拉机工作过程中,导向轮不同方向的移动,使得拖拉机导向轮与拖拉机机身之间拐轴的受力情况非常复杂。为了对拐轴结构完整性进行准确的分析,首先依据拐轴的设计尺寸建立实体三维有限元模型。其次,分析拐轴在工作过程中的受力情况,对有限元模型施加合适的载荷。通过计算分析获得拐轴受到的最大Von Mises应力为471MPa,并依据最大Von Mises应力对拐轴进行寿命分析,获得拐轴使用寿命为无限次。因此,导向轮拐轴在正常工作情况下,结构完整性不会发生任何损坏。
During the work of caterpillar tractor, the stress of the crankshaft between guide wheel and tractor is very complicated. In order to analyze structural integrality of crankshaft, 3D finite element model was built according to the design of the crankshaft. And the stress condition is analyzed during the work of the crankshaft and appropriate load is applied on the finite element model. The analytical results show that the maximal Von Mises stress of crankshaft is 471MPa by finite element analysis, and fatigue life of crankshaft is predicted on the basis of the maximal Von Mises and unlimited. Therefore, the crankshaft can not be broken during the work of caterpillar tractor.
出处
《机械设计与制造》
北大核心
2014年第11期33-35,共3页
Machinery Design & Manufacture
基金
国家自然科学基金(51210008)
关键词
导向轮拐轴
结构完整性
有限元模型
合适的载荷
寿命分析
Guide Wheel Crankshaft
Structural Integrality
Finite Element Model
Appropriate Load
Fatigue LifePrediction
