【摘 要】
：
应用微扰方法和有限元法,对端面气膜密封三自由度微扰下,密封气膜的刚度和阻尼系数进行了数值求解.该分析可计及多种典型端面结构的动静压效应.分析结果表明: 轴向微扰和角向
【机 构】
：
清华大学,沈阳工业学院,北京航空航天大学
论文部分内容阅读
应用微扰方法和有限元法,对端面气膜密封三自由度微扰下,密封气膜的刚度和阻尼系数进行了数值求解.该分析可计及多种典型端面结构的动静压效应.分析结果表明: 轴向微扰和角向微扰之间的交叉作用很小,可以忽略不计,因此工程实际中,在进行端面气膜密封的稳定性和强迫振动响应分析时,可将三自由度的微扰运动简化为两个相互独立的微扰运动,一个只作轴向的微扰移动,另一个只沿两个正交轴作角向微扰摆动.算例验证了计算的正确性.
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