New Topology Optimization Method for Wing Leading-Edge Ribs

For searching the stiffness structure under the constraints of given material volume fraction, the subset simulation-based topology optimization method is established on the combination of the advanced sensitivity filtering technique with the subset simulation, an efficient reliability analysis method. The subset simulation-based topology optimization is convergent, checkerboard free, and mesh independent. After one example is used to testify these advantages of the established method, the optimal design of the leading-edge rib of an aircraft wing is searched by the subset simulation-based topology optimization method, and the results demonstrate that the established method is an effective and rational tool for the topology optimization of the continuum structure.