A Complete Procedure for the Adjustment of a Finite Element Model from the Identified Complex Eigenmodes

Q. Zhang, G. Lallement, R. Fillod and J. Piranda
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Q. Zhang: Laboratory of Applied Mechanics, Associated to CNRS, UFR Sciences and Technology, University of Franche-Comté
G. Lallement: Laboratory of Applied Mechanics, Associated to CNRS, UFR Sciences and Technology, University of Franche-Comté
R. Fillod: Laboratory of Applied Mechanics, Associated to CNRS, UFR Sciences and Technology, University of Franche-Comté
J. Piranda: Laboratory of Applied Mechanics, Associated to CNRS, UFR Sciences and Technology, University of Franche-Comté

Chapter D20 in Numerical Techniques for Engineering Analysis and Design, 1987, pp 171-178 from Springer

Abstract: Abstract In this paper, a complete procedure is presented for the adjustment of the mathematical model of a self-adjoint mechanical structure from the identified complex modes. The mathematical model considered here is a finite element model with symmetric, positive definite matrices. This procedure is constituted of the following three steps: 1) Transformation of the identified complex eigensolutions into the real eigensolutions of the associated conservative structure. 2) Localisation of the dominant errors in the finite element model. 3) Parametric correction of the finite element model by an iterative process. The two last steps take advantage of the sensitivity matrix as a function of the design parameters of the structure. This procedure is illustrated by a simulated example.

Keywords: Finite Element Model; Initial Estimation; Versus Versus Versus; Versus Versus Versus Versus; Conservative Structure (search for similar items in EconPapers)
Date: 1987
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-94-009-3653-9_20

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DOI: 10.1007/978-94-009-3653-9_20

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