Material uncertainty quantification for optimized composite structures with failure criteria

We propose a method to analyze effects of material uncertainty in composite laminate structures optimized using simultaneous topology and optimization approach. The is based on computing worst-case values for the properties provides an efficient way handling variation composites stiffness driven problems. An analysis performed evaluate impact designs from two design problems: Maximization minimization failure criteria index, respectively. problems are solved different loads, boundary conditions manufacturing constraints. indicates that influence dependent type problem. For compliance objective value proportional changes constitutive effect consistent predictable generated designs. strength-based problem shows has significant response, not requirements. In addition, results show increase up 25% maximum index when considering deviation their nominal values.