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中文摘要：
提出了一种用于评估非线性碰摩的碰撞能量模型（IEM）,根据模型特性可得出IEM指标η用于评估碰摩故障的严重程度或发生概率.通过对在不同阻尼比ζ状态下IEM指标η随转速比Ω的响应变化趋势研究,给出了η随ζ和Ω的响应联合分布.结合IEM模型特性提出了＂敏感区域＂的概念.此区域概念的提出,不仅对于转子设备的操作运行具有较大的参考价值,对于转子系统的设计更有重要的指导意义.
英文摘要：
An impact energy model （IEM） is proposed for the research of nonlinear rub-impact assessment in this paper.According to the characteristic of the model,IEM index is given to evaluate the severity or probability of rub-impact fault.We investigate the trend of variation of IEM index response to the rotation speed ratio Ω under the condition of different values of damping ratio ζ,and then acquire a joint distribution of IEM response with the parameters of ζ and Ω.Combining the IEM model,a concept of ＂sensitive area＂ is proposed.The ＂sensitive area＂ provides an excellent reference for operating rotor system and a guidance and assessment for designing rotor system.
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