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常规的制动器分析方法不考虑制动蹄与制动鼓的变形,因此求得的制动力矩是不准确的。虽然这种方法也能满足一般的要求,但要改进设计则需要更严密的分析方法。本文介绍的有限单元法适用于摩擦面不一定和整个摩擦衬片都接触的情况,这样就可以利用一个简单的制动蹄和摩擦衬片模型来确定制动鼓的变形及热效应;然后再用制动测功仪对计算结果进行修正。事实证明这种方法既合理又行之有效。制动器模型是根据弹性梁的理论建立的。而将制动鼓看成是环绕整个摩擦衬片的刚性环形界面,摩擦面就在这个界面上。考虑到该表面的接触损失,对 PAFEC75程序进行了修
Conventional brake analysis methods do not consider the deformation of brake shoes and brake drums, so the resulting braking torque is inaccurate. Although this method can meet the general requirements, to improve the design requires more rigorous analysis. The finite element method presented in this paper is suitable for the case where the friction surface does not necessarily contact the entire friction lining, so that a simple brake shoe and friction lining model can be used to determine the deformation and thermal effects of the brake drum. Brake dynamometer to correct the calculation results. This method proved to be both reasonable and effective. Brake models are based on the theory of elastic beams. The brake drum as a rigid ring around the entire friction lining interface, the friction surface in this interface. The PAFEC75 program has been revised to account for contact loss on this surface