Accurate modal superposition method for harmonic frequency response sensitivity of non-classically damped systems with lower-higher-modal truncation
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- 作者：Weiwei Xiaoa ; xiaowei_tw618@sina.com" class="auth_mail" title="E-mail the corresponding author ; Li Lib ; lili_em@126.com" class="auth_mail" title="E-mail the corresponding author ; Sheng Leib ; leisheng945@hust.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Frequency response sensitivity ; Frequency shifting ; Non-classical damping ; Modal superposition method ; Modal truncation error ; Harmonic response
- 刊名：Mechanical Systems and Signal Processing
- 出版年：2017
- 出版时间：15 February 2017
- 年：2017
- 卷：85
- 期：Complete
- 页码：204-217
- 全文大小：852 K
文摘
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Harmonic frequency response sensitivity of non-classically damped systems is studied.
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The contribution of the lower and higher modes is expressed explicitly.
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The lower-higher-modal truncation error is eliminated.
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The method deals with the truncation error of FRF which is introduced for two times.
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The method maintains original-space resulting in efficient in computational source.
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