PC expansion for material parameters using artificial data and statistical methods |
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Authors: | Ismail Caylak Nicole Nörenberg Rolf Mahnken |
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Affiliation: | Chair of Engineering Mechanics (LTM), Paderborn University, Warburger Str. 100, 33098 Paderborn |
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Abstract: | This paper investigates the uncertainty of a hyper-elastic model by random material parameters as stochastic variables. For its stochastic discretization a polynomial chaos (PC) is used to expand the coefficients into deterministic and stochastic parts. Then, from experimental data in combination with artificial data for elastomers the distribution of the force-displacement curves are known. In the numerical example the PC-based stochastic and the deterministic parameter identification are used for generation of the distribution of Ogden's material parameters. (© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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