International Journal of Science and Technology

International Journal of Science and Technology>> Volume 7, Number 6, June 2017

International Journal of Science and Technology


Examination of Parameters Evaluation Methods in Computational Mechanics

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Author T. Beda, Paul Tchoua, Guy Edgar Ntamack
On Pages 634-641
Volume No. 2
Issue No. 9
Issue Date September, 2012
Publishing Date September, 2012
Keywords Computation, Approximation Methodologies, Approach in Stages, Least-Square, Methods Comparison


Abstract

These works present an analysis and comparison of two computational procedures for mathematical models parameters estimation: the approach-in-stages procedure and the ordinary (usual) one. The ordinary procedure is based on a single-step operation to fit the model parameters while the approach-in-stages, a graphical method combining the least squares, permits the evaluation of these parameters (physical characteristics) by a multi-stage-of-identification process. After summarize of the underlying theoretical framework, a presentation of numerical examples as comparison of the two ways of approximation, is set out. Furthermore, results from hyperelastic modeling are compared using each of the two approximation procedures to characterize rubbery materials by the strain energy density function

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