An analysis model generating method by a computer, for generating an analysis model by processing a three-dimensional geometric model of an apparatus including a plurality of parts, comprising:
- an inputting step of receiving the three-dimensional geometric model as input, and storing the three-dimensional geometric model in a first storage unit;
- a fastening portion extracting step of referring to a second storage unit storing attribute information about fastening between the parts, and extracting a fastening portion at which a first part and a second part are fastened based on the attribute information and the three-dimensional geometric model;
- a dividing step of dividing each of the first part and the second part into a first geometry in proximity of the fastening portion and one or more second geometries corresponding to a remaining portion of the first geometry in the three-dimensional geometric model;
- and
- an equivalent property value assigning step, being a step with respect to each of the first geometry obtained by dividing the first part and the first geometry obtained by dividing the second part, of referring to a third storage unit storing a parameter depending on the attribute information and a property value depending on a material of the part, calculating an equivalent property value as a property value reflecting fastening based on the parameter and the property value stored in the third storage unit, and assigning the equivalent property value to the first geometry.