A simple analysis model for an elastomeric material member with a strong nonlinearity is created, that is, for a rubber member gripped between a first member and a second member, first shell elements are created for the contact surface of the rubber member contacting the first member, second shell elements are created for the contact surface of the rubber member contacting the second member, and spring elements are created between specific nodes of the first and second shell elements. The spring constant of the created spring elements is identified by data of material tests.
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