Topological optimization method and device for elastic supporting seat of gearbox of wind generating set

The invention provides a topological optimization method and device for an elastic supporting base of a gearbox of a wind generating set. The method comprises the steps that the geometric structure and the size of the elastic supporting base of the gearbox are obtained; according to the geometric structure and the size of the gear box elastic supporting seat, constructing a finite element model of the gear box elastic supporting seat; performing simulation calculation on the finite element model according to actual working conditions, and determining an optimized area and a non-optimized area of the gear box elastic supporting seat; and based on the obtained constraint condition, performing iterative optimization on the finite element model of the gear box elastic supporting seat of which the optimization area and the non-optimization area are determined by adopting a variable density topological optimization method to obtain an optimized structural form of the gear box elastic supporting seat. The material u