Optimization Of Experiments For The Identification Of Material Parameters In Computational Models
Price
Free (open access)
Transaction
Volume
22
Pages
10
Published
1999
Size
1,021 kb
Paper DOI
10.2495/CMEM990531
Copyright
WIT Press
Author(s)
M.G.D. Geers, F.P.T Baaijens & C.W.J. Oomens
Abstract
The identifiability problem that rises in mixed numerical-experimental problems is one of the most important issues if an experiment has to be designed for the quantification of material parameters. This paper focuses on the relation between various aspects of an experiment and the condition number of the information matrix used in gradient algorithms for the parameter estimation. The initial estimate of the parameter sets permits to indicate whether or not the designed experiment provides the required information. A comparison is made for a tensile specimen and a bend specimen, where different types of measurements are simulated. Various aspects influence the optimal relation
Keywords