摘要
分析了含间隙运动副副元素的碰撞分离过程,指出线性弹簧阻尼模型不能满足接触边界条件并产生力突变;采用符合接触边界条件的非线性弹簧阻尼模型描述碰撞分离过程,并通过实例分析了模型积分求解方法;建立了多间隙曲柄摇杆机构的动力学模型,对含间隙机构的非线性特性进行了分析和讨论,说明多间隙机构动力学行为中存在混沌现象。
This paper points out the disagreement of boundary conditions that generate force discontinuity in the linear spring damping contact model by analyzing the contact modulation of the clearance joint.The nonlinear spring damping contact model is adopted to model the contact force of the clearance joint elements by making a comparison among the integration methods. The nonlinear behavior of the mechanism with clearance joints is analyzed based on the dynamic model of the crank rocker mechanism with clearance joints. Finally, according to Poincare map, it is found that clearance is the important fact that causes chaos and affects the figure of Poincare map.
出处
《机械科学与技术》
CSCD
北大核心
2005年第6期636-638,共3页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(50075068)资助
关键词
间隙
机构
碰撞
混沌
Clearance
Mechanism
Contact
Chaos
