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基于LMs Test．lab的航空发动机整机振动测量与分析: 作者： 艾延廷王志沙云东 来源： 2012年LMS中国用户大会 年份： 2016 文献类型： 会议论文 关键词： Test.lab　　Whole Vibration of engine　　Fault Diagnosis Body Aero engine　　LMS; 描述： 航空发动机整机振动问题是新机研制中的难题之一，而对整机振动进行有效的测量和分析，建立故障模式和识别系统是解决减振排故问题的关键。本文应用LMS Test．lab对某型航空发动机整机振动台架试验进行了测量和分析。结果表明，LMS Test．lab对航空发动机整机振动测量与分析具有很好的适用性和有效性。

航空发动机高速滚珠轴承振动特性研究（英文）: 作者： 唐云冰章璟璇施玲玲谢小虎 来源： 风机技术 年份： 2023 文献类型： 期刊 关键词： Ball Vibration Aerospace Propulsion Passage Waviness System Bearing Surface; 描述： Ball bearing is widely used as rotor supporting.It is a non/negligible source of vibration in aero/engines.The vibration characteristics of the highspeed ball bearing are studied in this paper.Bearing kinematics theory is applied to discuss the basic characteristics of ball bearings.The vibration factors caused by ball bearings are analyzed,and then the vibration model of ball bearings is set up.The effect of the unbalance,the ball passage vibration,the radial clearance and the surface waviness are considered.It is found that the ball passage vibration is excited by the contact force between the balls and the races.Increasing the numbers of ball can reduce the vibration amplitude.The surface waviness which is caused due to the geometric imperfection of ball bearings is considered as one of the important vibration sources of bearing systems.

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