Structural Optimization for Postbuckling Behaviour ― Present and Future

摘要

The present paper deals with the new approach to structural optimization against instability. The standard problem of maximization of instability load is modified so as to obtain a specified post-critical behaviour of the designed structure. A classification of modified design problems for elastic structures is provided where various forms of instability are taken into account and a broad selection of objective as well as constraint functions is presented. Some proposals of extension of that approach for the design of elastic-plastic structures are also given. Selected numerical solutions are presented.