Experimentally uncertainty quantification in numerical and analytical beam models

P. Langer, K. Sepahvand, M. Krause, S. Marburg

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

In modern industrial processes such as developing new products, virtual prototyping is state of the art method to ensure short design cycles while dealing with low cost pressure. In order to meet these criteria, efficient and reliable simulations must be available. Numerical methods, especially the Finite Element Method (FEM) are commonly used in various industrial fields e.g. The automotive sector, aircraft design and ship construction. The scope of this paper is to enhance the reliability of numerical models utilizing FEM when considering uncertain parameters of the underlying structure. Such parameters can be system related, i.e. geometry, material behavior, boundary conditions and mesh density as well as general assumptions in the process of modeling. Two well-known beam theories, i. e. Euler-Bernoulli and Timoshenko theory, have been utilized. At FE level, various elements available for modeling of beam structures in ABAQUS have been compared and evaluated. Experimental modal analysis have been performed on beam specimen to validate the results from analytical and FE models due to parameter uncertainties. A comparison between the numerical and analytical simulations with experiments reveal the element types with minimum deviation with regard to parameter uncertainties. Having sufficient knowledge of the dynamic behavior of simple beam samples, the complexity will be increased. This investigation developed instructions on how detailed a numerical model must be built to get satisfactory results.

Original languageEnglish
Title of host publicationINTERNOISE 2014 - 43rd International Congress on Noise Control Engineering
Subtitle of host publicationImproving the World Through Noise Control
EditorsJohn Davy, Marion Burgess, Charles Don, Liz Dowsett, Terry McMinn, Norm Broner
PublisherAustralian Acoustical Society
ISBN (Electronic)9780909882037
StatePublished - 2014
Externally publishedYes
Event43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014 - Melbourne, Australia
Duration: 16 Nov 201419 Nov 2014

Publication series

NameINTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control

Conference

Conference43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014
Country/TerritoryAustralia
CityMelbourne
Period16/11/1419/11/14

Keywords

  • Beam structures
  • Experimental modal analysis
  • FE modeling
  • Uncertainty quantification

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