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New real-value modal combination rules for non-classically damped structures

机译:非经典阻尼结构的新实值模态组合规则

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摘要

A procedure is presented to determine new modal combination rules (both CQC and SRSS) for non-classically damped structures. The procedure presented in this paper does not need the solution of any complex eigenvalue problem, in contrast to other methods found in the literature. Thus, the modal combination rules presented here are easily applicable, even by those engineers who are unaccustomed to using complex algebra. Moreover, these formulations show the further advantage of requiring the response spectra only for the target damping ratio value. So the use of approximated formulae, necessary for passing from the response spectrum with the target damping ratio value to other ones, is avoided.
机译:提出了确定非经典阻尼结构的新模态组合规则(CQC和SRSS)的程序。与文献中发现的其他方法相比,本文介绍的过程不需要解决任何复杂的特征值问题。因此,即使是不习惯使用复杂代数的工程师,此处介绍的模态组合规则也很容易应用。此外,这些公式还显示出仅对于目标阻尼比值才需要响应谱的优点。因此,避免使用从具有目标阻尼比值的响应谱传递到其他阻尼谱所必需的近似公式。

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