Patent ID: 7020588

Claim:
A design variable optimization system for determining a specific design variable from among a plurality of design variables according to a predetermined evaluation criterion, for a design article whose performance varies with change of each of the plurality of design variables, comprising: performance value calculating means for performing an analysis on said design article using each of said plurality of design variables and for calculating a plurality of performance values for evaluating the performance of said design article using each of the plurality of design variables, based on the result of said analysis; design variable determining means for determining said specific design variable from among said plurality of design variables, based on each of said plurality of performance values calculated by said performance value calculating means and using said predetermined evaluation criterion; and analysis end time determining means for determining an end time of said analysis in said performance value calculating means, wherein said analysis end time determining means determines the end time of said analysis so that a difference between the end time of the period necessary for the calculation of said performance value and the end time of said analysis becomes a predetermined, fixed value, and wherein the analysis on said design article performed by said performance value calculating means is a simulation concerning dynamic behavior of said design article.