Heterogeneous fusion dot matrix design method based on interpolation method

The invention provides a heterogeneous fusion dot matrix design method based on an interpolation method, and belongs to the technical field of structural lightweight design and structural optimization, and the method comprises the following steps: S1, constructing more than two types of TPMS dot matrix structures, and setting an independent number for each type of dot matrix unit; s2, calculating a unit space coordinate matrix of the dot matrix unit; s3, calculating serial numbers of lattice structure units on two sides of the fusion interface according to an implicit discriminant to obtain a unit type distribution matrix; s4, constructing an interface interpolation type heterogeneous fusion dot matrix based on a Voronoi function; s5, obtaining a unit intersection relation matrix according to the adjacency relation of each dot matrix unit; s6, performing local enhancement on a fusion interface of the heterogeneous fusion dot matrix by adopting a density factor d according to the unit intersection relation mat