According to one aspect of the present invention, in a shape optimization analysis method, a computer sets a part to be optimized in a structure model as a design space, and optimizes an optimization process A block model is created, the generated optimization block model is combined with the structure model, the material characteristics are set in the optimization block model, the optimum optimization condition for collision optimization is set in the optimization block model, A collision analysis condition is set for executing a collision analysis on a structure model in which a model is combined and a collision analysis is performed for an optimization block model on the basis of the collision- Information about necessity / unnecessaryness of a three-dimensional element is calculated, And and determining the optimum geometry of the collision on the basis of.
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