【摘要】 在不考虑自重的转子系统全局碰摩动力响应特性的解析分析基础上,应用数值分析方法,研究了考虑自重的转子系统的全局碰摩动力响应特性。通过大量的数值计算得到了不同参数平面内、不同碰摩响应的稳定区域图。研究表明重力引起的静变形与偏心距之比是决定转子的碰摩响应的变化大小的重要参数,比值越大,转子碰摩响应较不考虑自重的转子碰摩响应的变化越大,会出现多种复杂的响应和共存现象。本研究有助于认清系统参数相互作用对出现不同碰摩响应序列的影响。更多还原

【Abstract】 Based on the global dynamical characteristics of a rotor/stator system neglecting the gravity,the global response characteristics of an rotor/stator system accounting for the gravity are explored. The regions of different steady-state rubbing responses in parameter planes are obtained via the numerical simulations.The investigation indicates that the influence of the gravity on the rubbing responses of the rotor/stator system depends remarkably on the ratio of the static deflection induced by the weight to eccentricity.For a given rotor/stator system,the ratio must exceed a certain value so that the qualitative differences in response characteristics between the rotor/stator systems neglecting and accounting for the gravity are detectable,and a deeper insight into the appearance of different response cascades can be gained.更多还原