Topological optimization method, system and device based on variable density method and storage medium

The invention provides a topological optimization method, system and device based on a variable density method and a storage medium, and the method comprises the following steps: determining a constraint condition of a target structure, the constraint condition being determined according to a design region, a load, a boundary condition and an optimization target of the target structure; outputting through a variable density method model to obtain an optimization formula of the constraint condition; according to the optimization formula, solving a convex quadratic approximation sub-problem to obtain a structure diagram of the target structure, and generating the target structure according to the structure diagram; according to the scheme, by solving the convex quadratic approximation sub-problem, introduction of parameters is reduced, the solving time needed by the scheme is shortened to a certain extent, and the solving speed is increased; the scheme has a more excellent and clearer performance structure; the