The invention relates to a
brake disc
modal improvement method and device based on
topological optimization and a medium. The method comprises the following steps: S1, establishing a three-dimensional geometric model of the
brake disc; s2,
simulation modeling is carried out; s21, carrying out grid division; s22,
brake disc material and section attribute setting; s23, constraint, load and output setting; s3, analyzing in-plane and out-plane
modal shapes and frequencies of the brake disc; s4, establishing a geometry for topology; s5, establishing an optimization model and parameters; s6, carrying out
topological optimization solution, checking a result and optimizing a geometric structure; according to the method, the problems that the brake disc
modal improvement thought is not clear, the
engineering experience is excessively depended, and the modal result is not accurately estimated are solved; according to the
topological optimization result, the change direction of the brake disc design is provided, so that the mode of the brake disc is improved, the
development period is shortened, and the development cost is saved.