Finite element nonlinear stability analysis of framed structures

The development of efficient and accurate finite element modelling techniques for the routine analysis of elastic-plastic stability problems in frame structures is addressed. The necessary models, solution procedure and geometric algorithm used for nonlinear stability analysis of frames are presented. An available finite element code, NOSTRUM, which had the basic algorithms necessary to carry out nonlinear analysis was used as the starting point. The Timoshenko beam/frame elements with a layered representation of the cross-section, uniaxial elasticplastic constitutive models, different integration procedures and simplified large deformation geometric assumptions incorporated into NOSTRUM are discussed in detail. Numerical examples are given to validate the algorithms implemented and to provide the experience necessary to give guidelines for the adequate choice of discretization and numerical schemes to be used in routine nonlinear stability analysis of frame structures.

Grantor dc:publisher.institution

Department of Civil Engineering

Year dc:date.issued

1985

Author dc:creator

• McAdie, R L

Advisor dc:contributor.advisor

• Martin, J B

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/11427/21872

OAI identifier oai:identifier

oai:open.uct.ac.za:11427/21872