Method for topology optimization design considering fatigue life of structure and record media recorded program for implement thereof

摘要

According to an aspect of the present invention, there is provided a method of optimizing a phase of a structure, the method including: dividing a design area of the structure into finite elements; Calculating a fatigue life of the element; Setting a constraint and an objective function for the element; A sensitivity analysis step of analyzing the degree of change of the constraint condition and the objective function; Performing a phase optimal design using a sensitivity value inside the structure obtained in the sensitivity analysis step; Determining whether the constraint condition and the objective function satisfy a criterion; And determining the shape of the structure to be designed. By constructing as described above, it is possible to design a structure having a lifetime as desired by a designer with respect to a structure to which a repeated load is applied.