cqu_310+ATTACHMENT01+ATTACHMENT01.4.pdf (648.05 kB)
Download file

An Inverse approach for the evaluation of plastic constitutive parameters from structural response

Download (648.05 kB)
conference contribution
posted on 06.12.2017, 00:00 by Manicka DhanasekarManicka Dhanasekar, Shengxiang JiaShengxiang Jia
Nonlinear response of structures is commonly predicted from the experimentally evaluated elastoplastic material parameter dataset. This paper presents an inverse approach for the identification of plastic constitutive parameters from the response of structures obtained from the finite element method coupled with genetic algorithm. Behaviour of a slab containing centrally located fillet curved notch subjected to cyclic bending is used for the evaluation of the plastic properties and the hysteretic stress-strain curves obtained from the evaluation are in good agreement with the original curves. The approach could be used in developing constitutive relations for materials under complex 3D states of stress by judiciously designing an experimental setup involving complex shapes of structures with simple load application, which will significantly reduce the costs of generating complex 3D loading on simple shapes of specimens as traditionally followed. The material parameters obtained are more realistic as they account for the true status of the structures.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Start Page

975

End Page

980

Number of Pages

6

Start Date

01/01/2006

ISBN-10

0415426928

ISBN-13

9780415426923

Location

Christchurch, N.Z.

Publisher

Taylor & Francis

Place of Publication

London

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Centre for Railway Engineering; TBA Research Institute;

Era Eligible

Yes

Name of Conference

Australasian Conference on the Mechanics of Structures and Materials