Reliability and Reliability-Based Design Optimization

Authors : Vedat TOĞAN, Ayşe DALOĞLU

Pages : 237-249

Doi:10.3906/sag-1209-73

View : 13 | Download : 8

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Reliability is often understood as the probability that a structure will not fail to perform its intended function. In this paper, the general formulation of consistent evaluation of the safety of structures and the associated methods of analysis are reviewed. After the reliability analysis of a cantilever beam is demonstrated, the methodology of reliability-based optimization and the related problem are discussed. A typical 2D roof truss system is optimized by various optimization methods, such as Sequential Quadratic Programming insert ignore into journalissuearticles values(SQP);, Evolution Strategy insert ignore into journalissuearticles values(EVOL);, and Genetic Algorithms insert ignore into journalissuearticles values(GA);. It is concluded that the algorithms work well and an efficient design of the roof truss is achieved under the constraint of the failure probabilities of structural element.
Keywords : Optimization, Reliability, Reliability based design optimization, Truss, Evolutionary computation