Optimal design of nonlinear framed structures under multiple loading conditions based on a stability criterion

An optimization-based design methodology is presented for improving the strength and overall stability of framed structures. The design methodology is a multiple-objective optimization procedure whose objective functions involve the buckling eigenvalues and eigenvectors of the structure. Designs are constrained to have constant weight. An iterative optimality criterion method is used to solve the optimization problem. The method provides a general tool for designing complex structures with nonlinear behavior and generally leads to designs with better limit strength and stability while avoiding nonlinear analysis in the optimization cycle. The approach is indirect, but is effective and efficient.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Civil Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Pezeshk, Shahram

Contributors dc:contributor

• Hjelmstad, Keith D.

• Engineering, Civil

Statement dc:rights

• Copyright 1989 Pezeshk, Shahram

Language dc:language

eng

Identifier

AAI9010985
(UMI)AAI9010985

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/19092