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Contact stress calculation for cam couple of constant-flow pump
Author(s): 
Pages: 19-21
Year: Issue:  2
Journal: MACHINERY

Keyword:  恒流量泵凸轮接触应力有限元法;
Abstract: 根据恒流量往复泵柱塞运动规律的要求,推导、计算了恒流量泵凸轮的廓线、压力角、展角等重要参数;考察了用有限单元法计算凸轮接触应力的可行性,并计算凸轮曲率突变点的应力,解决了常规算法计算不了的问题.计算表明:凸轮曲线曲率突变造成接触应力增大,使凸轮整体寿命降低42%以上,是引起凸轮过早破坏的主要原因.
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