| 摘要 |
PROBLEM TO BE SOLVED: To precisely evaluate stiffness of a structure that is made of a metal plate having in-plane anisotropy of Young's modulus.SOLUTION: A material characteristic value input part 102 inputs a material characteristic value from a database 101, with respect to a metal plate that is a material of a target structure. A first calculation part 103 obtains a material parameter in a reference direction, which is necessary for stiffness analysis, from the material characteristic value input by the material characteristic value input part 102. A second calculation part 104 obtains a material parameter in a direction of an angle &thetas; between the reference direction and a blank layout direction, from the material parameter in the reference direction obtained by the first calculation part 103. A stiffness analysis part 105 analyzes stiffness of the target structure by using the material parameter in the blank layout direction obtained by the second calculation part 104. By changing the blank layout direction &thetas; at multiple stages and repeating the processing of the second calculation part and the processing of the stiffness analysis part 105, the blank layout direction &thetas; making the stiffness maximum is determined. |
