FE/test correlation and validation of a BIW modal analysis

被引：0

作者：

Cesteros, B. ^{[1
]}

Hidalgo, A. ^{[1
]}

Morcillo, M. A. ^{[1
]}

Ortega, A. ^{[1
]}

Selgas, C. ^{[1
]}

机构：

[1] CIDAUT, Dept Acoust & Vibrat Res, Valladolid 47151, Spain

来源：

Proceedings of ISMA 2004: International Conference on Noise and Vibration Engineering, Vols 1-8 | 2005年

关键词：

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Numeric simulation today is a fundamental tool in the development of new components. Validity of results must be evaluated using experimental measurements. In this paper, the objective is the simulation and validation of a body in white (BIW). The experimental modal analysis was carried out with the direct measurement of nearly 300 points, and the mode shapes were estimated using the software LMS Cada-X. The finite element model used for the simulation with MSC Nastran had more than a million dof. LMS Pre-Test is used to reduce the degrees of freedom from the FE model to the test ones. There are different methods to asses the quality of the finite element model, by comparing analytical and experimental modal parameters: MAC, CoMAC, Spider graph... Based on the outcome of the correlation analysis from LMS Gateway, the analytical models can be updated such that they more accurately predict the actual test results.

引用

页码：1769 / 1777

页数：9

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