几种阻尼模型的建模方法及评价

Modeling methods and appraising of damp models

利用一种统一的阻尼模型的定量评价方法和评价指标,设计了一套适用于评价各种阻尼模型的标准测试案例。分析了工程结构动力学建模过程中几种阻尼模型。通过标准测试案例的数值测试,比较了这些阻尼建模法的性能差异。结果表明,不同的阻尼建模方法对结构动力学有限元模型的精度有显著影响,应该对此影响加以考虑;单元阻尼法,对实际的工程结构来说更有意义。

A uniform evaluation methods and evaluation index for some damp models are quoted by this paper, A standard lest case is designed for the evaluation. Several damp modeling methods used in the process of engineering structure dynamical analysis are compared, A standard problem is designed to give all the models an impartial test. Numerical tests on the standard test ease, it shows that different damp methods have conspicuous effects on precision of the dynamics finite dement model of the structure. This influence should be considered. The elemental damp property is more meaningful for real proiect structure.