IJPAM: Volume 49, No. 4 (2008)

HYBRID METHODS FOR MATERIAL CHARACTERISATION

W. Brocks$^1$, I. Scheider$^2$, D. Steglich$^3$
$^{1,2,3}$GKSS Research Centre
Institute of Materials Research
Max-Planck-Str. 1, Geesthacht, D-21502, GERMANY
$^1$e-mail: wolfgang.brocks@gkss.de


Abstract.Material parameters are adjustable coefficients in constitutive equations of the mechanical behaviour. Their identification requires a combined experimental and numerical approach, which results in a generally ill-posed inverse problem. Methods commonly applied in computational mechanics like optimisation and neural networks are addressed, and problems like sensitivity, uniqueness and stability are discussed.

Received: August 14, 2008

AMS Subject Classification: 35R30, 78M10

Key Words and Phrases: parameter identification, optimisation, evolution strategy, neural network, cohesive model

Source: International Journal of Pure and Applied Mathematics
ISSN: 1311-8080
Year: 2008
Volume: 49
Issue: 4