BAYESIAN CALIBRATION OF A FINITE ELEMENT STIFFENED PANEL MODEL USING EXPERIMENTAL COMPRESSION TEST DATA

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding

Abstract

Bayesian calibration is a statistical framework for combining experimental and numerical data to make predictions using computer models, while formally accounting for uncertainty associated with: i) experimental observation error, ii) inaccuracies in the model and assumed physics, and iii) variability in the physical parameters of the test specimen. The ability to accurately quantify such uncertainty will enable certification processes to be better informed by mathematical models and component-level structural tests. In this paper, Bayesian calibration is applied to a finite element stiffened panel model implemented in Abaqus, using strain gauge data from experimental compression tests. In this preliminary investigation, the elastic properties of the AS4/8552 prepreg lamina from which the panel was manufactured are inferred. Such parameters cannot be precisely controlled in the experiment during to inherent variability in manufacturing processes. A Gaussian Process Emulator is used in the calibration for the sake of computational efficiency.

Original languageEnglish
Title of host publicationComposites Meet Sustainability – Proceedings of the 20 th European Conference on Composite Materials, ECCM20. 26-30 June, 2022, Lausanne, Switzerland
EditorsAnastasios P. Vassilopoulos, Veronique Michaud
PublisherComposite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL)
Pages875-882
Number of pages8
Volume4
ISBN (Electronic)9782970161400
DOIs
Publication statusPublished - 30 Jun 2022
Event20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022 - Lausanne, Switzerland
Duration: 26 Jun 202230 Jun 2022

Publication series

NameProceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability
Volume1-6

Conference

Conference20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022
Country/TerritorySwitzerland
CityLausanne
Period26/06/2230/06/22

Bibliographical note

Funding Information:
The presented research was supported by?the? EPSRC? Programme?Grant?‘Certification?for? Design? – Reshaping?the?Testing?Pyramid’?(CerTest,?EP/S017038/1).

Keywords

  • Bayesian inference
  • Finite Element Analysis
  • Gaussian Process Emulators
  • Model calibration
  • Uncertainty Quantification

ASJC Scopus subject areas

  • Ceramics and Composites

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