A Novel TPA Method Using Parametric Load Models: Validation on Experimental and Industrial Cases

Document Number: 2009-01-2165

Date Published: May 2009

Author(s):
Peter Gajdatsy - LMS International
Ludo Gielen - LMS International
Peter Mas - LMS International
Karl Janssens - LMS International
Herman Van der Auweraer - LMS International
Wim Desmet - Katholieke Universiteit Leuven

Abstract:
Despite the fact that Transfer Path Analysis (TPA) is a well known and widely used NVH tool it still has some hindrances, the most significant being the huge measurement time to build the full data model. For this reason the industry is constantly seeking for faster methods.

The core concepts of a novel TPA approach have already been published in a paper at the ISMA 2008 Conference in Leuven, Belgium. The key idea of the method is the use of parametric models for the estimation of loads. These parameters are frequency independent as opposed to, e.g., the classical inverse force identification method where the loads have to be calculated separately for each frequency step. This makes the method scalable, enabling the engineer to use a simpler model based on a small amount of measurement data for quick troubleshooting or simply increase accuracy by a few additional measurements and using a more complex model.

The main focus of this paper will be to present different validation cases, first on a fully synthetic TPA dataset, then on a simplified experimental setup and finally on an industrial case, comparing this novel approach with classical TPA.

File Size: 430K
Product Status: In Stock

See other papers presented at SAE 2009 Noise and Vibration Conference and Exhibition, May 2009, St. Charles, IL, USA, Session: Instrumentation Systems, Sensors and Methods (Part 3 of 4)

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