The invention discloses a
macro-micro integrated structure
topology optimization method considering stress constraints. According to the method, for the
topology optimization problem of a structure with a macroscopic
solid material and a micro-truss at the same time, the micro-truss is equivalently expressed as a mean material by adopting a representative volume element method; for the
solid material, a stress comprehensive function is used for representing the
stress level of the
solid material; then an adjoint
vector method is adopted for solving the stress comprehensive function and a partial derivative value of a displacement to a design variable; and finally, the
macro-micro integrated structure
topology optimization considering the stress constraint is solved by building a double-level optimization model, wherein an inner layer is solved by adopting a moving asymptotic line method, the displacement constraint of the structure and the stress constraint of the
solid material are achieved, and an outer layer adopts a univariate function zero solving
algorithm to realize the stress constraint of the micro-truss. The provided topology optimization method can effectively control the
stress level of the
macro-micro integrated structure to realize the
topological optimization of the macro-micro integrated structure under the stress constraint.