海冰的粘塑性蠕变模型  

A VISCOPLASTIC CREEP MODEL OF SEA ICE

作　　者：陈星[1] 徐继祖[1] 

机构地区：[1]天津大学

出　　处：《工程力学》1993年第4期52-57,共6页Engineering Mechanics

摘　　要：本文将粘塑性理论用于海冰荷载分析,并将现有的一维蠕变方程推广到二维形式,采用非线性有限元方法计算了作用在一单桩结构上的最大静冰力。In this paper the theory of viscoplasticity is applied for the analysis of sea ice loads, and a mathematical creep model under uniaxial stress condition is generalized to a triaxial formulation. The maximum static ice forces exerted on a single rectangular pile are claculated according to this model by using the nonlinear finite element method. The results are compared with those from other sources. The model seems to be more realistic and reasonable than those in present use such as the plastic limit analysis method and the reference stress method.

关 键 词：海冰 蠕变 粘塑性 

分 类 号：TB12[理学—工程力学]