OPTIMIZATION OF BAR STRUCTURES WITH RANDOM IMPERFECTIONS WITH CONSTRAINTS ON FAULTLESS OPERATION PROBABILITY FOR OVERALL LOSS OF STABILITY

Abstract

In this paper, we consider the case when the random imperfections value of the non-multiple critical buckling load changes and the type of non-multiple critical point - the limit point is not changed. The aim of the paper is the formulation and solution of the weight optimization problem of bar structures with constraints on faultless operation probability of the structure and constraints on the design variables. The method was verified on two test structures.

Keywords: optimization, geometrically nonlinear bar structures, random global imperfections, faultless operation probability for overall loss of stability, non-multiple limit points.