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Global static and dynamic car body stiffness based on a single experimental modal analysis test
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TLDR
Experimental validation on a full body-in-white proves industrial applicability of the proposed technique to overcome the downsides of the classic static test by determining both global static, as well as dynamic stiffness based on a single modal analysis test.Abstract:
Global car body stiffness is an important design attribute in vehicle design. Therefore accurate characterization of this stiffness is needed. The current industrial method for static stiffness determination has several downsides, amongst others its time consuming set-up preparation. Dynamic characterization by means of modal analysis on the other hand has high repeatability and a less time consuming set-up preparation. This paper describes and experimentally validates the industrial implementation of a method to overcome the downsides of the classic static test by determining both global static, as well as dynamic stiffness based on a single modal analysis test. The method combines several techniques available in literature. Theory behind the method is elaborated, simulation tests show the potential of the method and finally experimental validation on a full body-in-white proves industrial applicability of the proposed technique.read more
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References
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Evaluation of the FRF based substructuring and modal synthesis technique applied to vehicle FE data
K Cuppens,Paul Sas,L Hermans +2 more
TL;DR: In this article, two possible methods, namely dynamic FRF compensation and compensation by residual modes, are discussed for vehicle FE data, more specifically to the coupling of a vehicle subframe with a body-in-white.
Modal Analysis of Multi-reference Impact Test Data for Steel Stringer Bridges
TL;DR: In this article, a comparative study on the postprocessing of experimental modal data from a large scale steel stringer bridge for damage identification is presented, and the results in both modal and flexibility space are presented.
Journal ArticleDOI
Identification of rigid body inertia properties from experimental data
Annalisa Fregolent,Aldo Sestieri +1 more
TL;DR: In this paper, a direct procedure is developed to estimate the mass properties from the massline characteristic of experimental FRFs, where the non-linear problem is divided into a series of simpler linear problems and solved in subsequent steps.
Proceedings ArticleDOI
Development of a Cost Competitive, Composite Intensive, Body-in-White
TL;DR: The Automotive Composites Consortium has initiated the third of a series of focal projects, which is a multi-year program to develop a design and manufacturing strategy for a composite intensive body-in-white (BIW) with aggressive mass reduction, manufacturing cycle time and cost parity targets as discussed by the authors.
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