Refinement of reduced-models for dynamic systems

Refinement of reduced-models for dynamic systems
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动态系统简化模型的细化

DOI:
10.1016/j.pnsc.2008.03.011
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发表时间:
2008-08
期刊:
Progress in Natural Science
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--
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其他
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本文提出了一种结构动力系统简化模型的精化方法。精化过程是将可从任何传统模型简化方案获得的简化模型的参数“调整”为改进的简化模型。精化完成后,改进的简化模型匹配全阶模型的动态特性--所选择的结构频率及其振型。在数学上,实现模型精化技术的过程是新近发展的跨模型交叉模式(CMCM)方法在模型修正中的应用。给出了一个将五自由度经典质量弹簧模型简化为三自由度广义质量弹簧模型的数值算例。
A refinement procedure for the reduced models of structural dynamic systems is presented in this article. The refinement procedure is to “tune” the parameters of a reduced model, which could be obtained from any traditional model reduction scheme, into an improved reduced model. Upon the completion of the refinement, the improved reduced model matches the dynamic characteristics – the chosen structural frequencies and their mode shapes – of the full order model. Mathematically, the procedure to implement the model refinement technique is an application of the recently developed cross-model cross-mode (CMCM) method for model updating. A numerical example of reducing a 5-DOF (degree-of-freedom) classical mass-spring (or shear-building) model into a 3-DOF generalized mass-spring model is demonstrated in this article.
DOI: --
发表时间: 1981-08
期刊: --
影响因子: --
作者:
R. Craig;S. Benzley
通讯作者: R. Craig;S. Benzley
DOI: 10.2307/3617959
发表时间: 1981-03
期刊: The Mathematical Gazette
影响因子: --
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通讯作者: F. Berkshire;M. Paz
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发表时间: 2007-05-01
影响因子: 8.4
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通讯作者: Wang, Shuqing
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发表时间: 1986-05
影响因子: 0.9
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发表时间: 1995
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