Modal screening of vibrating systems with local modes

Mircea Radeș
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Abstract

This paper reports experience in using several Mode Indicator Functions for structures with local higher modes and heavy damping. The failure to locate all the modes of vibration for heavily damped structures is emphasized using a 15 degrees of freedom lumped parameter system.
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具有局部模态的振动系统的模态筛选
本文报告了对具有局部较高模态和重阻尼的结构使用几种模态指示函数的经验。文中强调了使用 15 自由度总成参数系统无法定位重阻尼结构的所有振动模式的问题。
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