Meanwhile, at inelastic state, they can simulate the bifurcation of hysteretic loops due to the non-proportionality of the translational and rotational deformations.

• 在非弹性状态，振态平移与旋转不再成比例变化，振态迟滞迴圈呈现分叉的特性，故在非弹性动力反应中平移与旋转反应彼此会交互影响。