A flexible thin-wall crossed
roller bearing multi-target parameter optimization method relates to the technical field of
bearing design, and comprises the following steps: 1, establishing a parameterized
system model containing a shaft
system, a thin-wall crossed
roller bearing and a box body
assembly relation, the bearing model being determined by geometric and
assembly parameters; 2, carrying out finite
element modeling on the inner / outer ring of the bearing, and carrying out polycondensation on the degree of freedom of an interface to obtain an
equivalent stiffness matrix; 3, inputting working conditions and material parameters, and setting a design variable feasible region and constraints; 4,
coupling a mapping matrix to solve
load distribution, calculating the maximum contact stress and the life damage rate, and constructing a dual-objective optimization model; 5, performing
test design to obtain response data, and performing multi-target
algorithm iterative optimization to obtain a
Pareto optimal solution set; and 6, screening the solution set, and outputting a structure parameter combination meeting the requirement. The method can solve the problems that in the prior art, it is difficult to consider calculation efficiency and
ferrule flexibility effect precision, and it is difficult to conduct rapid iterative optimization on roller
load distribution and life / contact stress indexes.