A New Satic Mechanics Model to Solve Contact Problems in Mechanical Systems
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摘要: 从机械系统的角度出发，描述了系统中构件间局部接触与构件弹性变形间的耦合关系;用多组坐标系描述机械系统中物体的位形;用分离接触边界法描述物体接触边界间的约束；通过接触虚功原理建立了更加广泛意义上的接触系统静力学模型．作为算例，将该力学模型应用于内啮合少齿差行星齿轮多齿啮合问题的研究，揭示了行星齿轮传动中有多对轮齿相互接触，获得了其接触应力分布状态．通过实验验证了力学模型、计算方法和计算结果的正确性．Abstract: The coupling of the local contact problems between the components and the deformation of the components in the mechanical system were discovered. A series of coordinate systems have been founded to describe the mechanical system with the contact problems. The method of isolating the boundary of contact body from others has been used to describe the constraint between the contacting points. A more generalized static mechanics model of the mechanical system with the contact problems has been founded through the principle of virtual work. As an application, the model was used to study the multi-teeth engagement problems in the inner meshed planet gear systems. The stress distribution of contact gears was got. A test has verified that the static contact model and the computational method are right.
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Key words:
- mechanical system /
- contact problem /
- planet gear drive
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