Morphing method for structure shape, its computer program, and computer-readable storage medium

Upon calculating a FEM model of a new model vehicle as a structure to be analyzed using that of an existing vehicle as a prototype structure, a computer sets a plurality of corresponding reference points on the outline of the new model vehicle and the FEM model of the existing vehicle, changes a mesh model included in the FEM model of the existing vehicle to the outer shape of the new model vehicle on the basis of that mesh model and the correspondence between these reference points, and merges additional information contained in the FEM model of the existing vehicle and its associated state with respect to the deformed mesh model, thus calculating the FEM model of the new model vehicle.