排序方式: 共有6条查询结果,搜索用时 15 毫秒
1
1.
2.
弹性接触问题的一种新的力学模型 总被引:1,自引:0,他引:1
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. 相似文献
3.
4.
波纹管是一种具有极高扭转刚度,但易于失稳的弹性薄壁壳体。由于波纹管通常在很小的扭转角度下就会发生失稳,限制了其在传递扭矩方面的用途。通过实验研究发现,波纹管扭转屈曲时其材料远未到达强度极限,使得材料的利用率较低。波纹管失稳以后依然可以在一定范围内承受增大的扭矩,其在弹性范围内的扭转角度远大于屈曲发生时的扭转角度。为提高波纹管在后屈曲阶段的承载能力,采用具有合适内径的刚性外套来约束其横向弯曲变形。通过实验研究与有限元分析相结合的方法,比较了后屈曲阶段外套在提高波纹管承载能力方面的作用,两者得到了一致的结论,外套约束对波纹管后屈曲阶段的承载增加作用明显。 相似文献
5.
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 proble.ms. 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. 相似文献
6.
1