STRUCTURAL TOPOLOGY OPTIMIZATION USING NUMERICAL DERIVATIVES

摘要

PROBLEM TO BE SOLVED: To provide a method of optimizing a structural topology design.SOLUTION: Definition of a product's design domain along with a design objective, at least one target design constraint, and macro and field design variables are received in a computer system. The macro design variables are related to the product's design specification while the field design variables control the material distribution within the design domain. Candidate design, represented by a corresponding FEA model, is established based on the design domain. At least one variation of the candidate design is created by varying the macro design variables. Corresponding design constraint of the candidate design and at least one variation are computed via an FEA. A trend of the computed design constraints with respect to the macro design variables is determined by multi-dimensional data fitting. Macro variables are updated according to the trend. New candidate design is created by computing the field design variables using FEA results from the previous candidate design and design specifications including updated values of the macro design variables.SELECTED DRAWING: Figure 1