An Efficient Approach to Structural Optimization of Aircraft Structures Considering Parameter Variation

Abstract

α = magnitude of the change in design variables β = new design variable (Vanderplaats’ formulation) e = relative error λ = buckling load factor σ = normal stress c = positive constant (Vanderplaats’ formulation) F = objective function g = design constraint i = design variable index j = active constraint index p = parameter ∆p = parameter increase r = inactive constraint index S = vector of feasible directions w = vertical displacement X = vector of design variables X = vector of optimum design variables Xaprox = vector of approximate optimum design variables