【摘要】 在实验的基础上对海冰的粘性效应及非线性特性进行了分析，并求出了对应常应变（ε＝０．１％）和常应力情况下的非线性因子．在理论分析方面，应用非线性粘弹性记忆衰退理论建立了积分型的本构方程；对线性Ｂｕｒｇｅｒｓ模型进行修正，建立了以应变表示的非线性微分型的本构方程，通过了实验验证，理论计算结果与实验曲线有较好吻合．更多还原

【Abstract】 Based on experiments,the viscose effects and nonlinear behaviour of the sea ice are analyzed and its nonlinear factors are obtained both at constant strain (ε= 0.1%) and constant stress loading condition. The nonlinear viscoelastic memory decay theory is applied to construct the integral constitutive equation of the sea ice. The linear Burgers model is modified to construct the nonlinear differential constitutive equation which is expressed by the strain. It is found that there is a good coincidence between the theoretical calculation and test curve.更多还原