Method for creating approximate model of structure, approximate model creating apparatus and program

摘要

PROBLEM TO BE SOLVED: To provide a method for generating an approximation model of a structure, a device for generating the approximation model of the structure, and a program in which the approximation model has high accuracy and a calculation amount and a calculation time can be reduced.SOLUTION: A method for generating an approximation model of a structure corresponds to a plurality of kinds of design variables defining a structure and materials constituting the structure; and a plurality of characteristic values defining the structure and the materials constituting the structure. The method sets the plurality of kinds of design variables, a domain of each of the design variables, and a plurality of kinds of the characteristic values. Values of the design variables are set using at least a latin hyper cube method and an orthogonal table. The method determines nonlinear response relations between the plurality of kinds of design variables and the plurality of kinds of characteristic values, and calculates an output value in a characteristic value space composed of the characteristic values of the values of the design variables, using the relations. The method uses the design variables and the output value to generate an approximation model by using the characteristic value as an object function. The method performs a multipurpose optimization calculation using the approximation model.SELECTED DRAWING: Figure 1