摘要
传递路径分析(transfer path analysis,TPA)为解决工程中的许多振动噪声问题提供了较好的解决方案,但是也存在测试效率比较低、测试过程比较繁琐等缺点。工况传递路径分析(operational transfer path analysis,OTPA)作为一种改进的TPA方法,由于其具有操作简单、测试效率高等优点,受到了工程界的青睐。但是,OTPA在提高测试效率的同时却降低了测试的精度。此外,OTPA对于传递路径的定义与传统的TPA存在差异。为了改进现有的OTPA方法,提出了一种利用主被动侧耦合点响应之间的差值来替代原先OTPA中的参考点响应信息的方法。理论分析和实验都证明了所提出的方法在工作量相当的前提下提高了OTPA的测试精度,且路径的物理意义和传统TPA保持一致。
Transfer path analysis(TPA)provides a good way to solve many vibration and noise problems in engineering,but it also has the disadvantages of low efficiency and tedious testing process.As an improved TPA method,OTPA(operational transfer path analysis)is favorable in the industry due to its advantages of simple operation and high test efficiency.However,OTPA reduces test accuracy although it can improve test efficiency.In addition,the definition of the transfer path in OTPA is very different from classical TPA.In order to improve the existing OTPA,a novel method that uses the differences of coupling point responses between the active and passive sides to replace the reference point responses was proposed.Theoretical analysis and an experiment both show that the proposed method can improve the test accuracy of OTPA without additional work.More importantly,the physical meaning of the transfer path in the proposed method is consistent with that in the classical TPA.
作者
廖旭晖
戴旭东
陈乐乐
廖连莹
孟浩东
赵景波
LIAO Xuhui;DAI Xudong;CHEN Lele;LIAO Lianying;MENG Haodong;ZHAO Jingbo(School of Automotive Engineering,Changzhou Institute of Technology,Changzhou 213032,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2021年第12期196-202,218,共8页
Journal of Vibration and Shock
基金
江苏省高等学校自然科学研究重大项目(18KJA580004)
江苏省高校自然科学基金(19KJB460009,19KJB480006,18KJB590001)。
关键词
工况传递路径分析
传递率
响应
奇异值分解
人工激励
operational transfer path analysis
transmissibility
response
singular value decomposition
artificial excitation
