GSMAC有限要素法による非圧縮超弾性体解析に関する実用化に向けた検討

(高次要素の適用と硬化特性の導入)

抄録

In the present paper, incompressible hyperelastic materials are analyzed using GSMAC-FEM that is a kind of decoupled FEM. Higher-order elements are applied to GSMAC-FEM, and stiffening property of rubber undergoing large deformation is introduced in order to use this computational method in practical problems. The accuracy of simple deformations is verified by using various elements in two-dimensional or three-dimensional problems. Then, stress-strain curves like S-letter are made by calculating the element-average values of elastic constants of higher-order Mooney-Rivlin material. Finally, the differences between various elements are compared in terms of the accuracy of solutions under the severe condition in compression of block problem that has singularity.