Interval Analysis of Uncertain Structure Based on Particle Swarm Optimization

Uncertainties widely exist in structural engineering.Interval analysis is the most effective method to calculate uncertain structure.However,interval analysis could not be applied widely in practical engineering because of low precision.Particle swarm optimization(PSO) is proposed to deal with interval analysis of uncertain structure in this paper to replace interval arithmetic by global optimization.It is shown that PSO has the more precise results than other interval arithmetic.