A method to calculate pack ice driving forces

E. Evgin; C. Zhan; R. M. W. Frederking

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A method to calculate pack ice driving forces

机译：一种计算冰块驱动力的方法

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摘要

A method is proposed to calculate pack ice driving forces. In order to develop the method, stress distributions in a circular ice floe are calculated for various boundary loading conditions. The analysis is carried out using a special-purpose finite element program in which Sinha's creep equation is used to model the behavior of ice. Charts relating pack ice driving forces to stresses in the ice floe are produced for a short period of loading time and creep equations for ice behavior. The results indicate that, for a short period of loading time and at low stress levels, a linear elastic analysis can be used to calculate the pack ice driving forces. However, when the stress levels in the ice floe are high or the time span of load application is long, linear and nonlinear analyses produce much different values for pack ice driving forces.

机译：提出了一种计算冰块驱动力的方法。为了开发该方法，针对各种边界载荷条件计算了圆形浮冰中的应力分布。使用特殊用途的有限元程序进行分析，其中使用Sinha的蠕变方程对冰的行为进行建模。在较短的加载时间和冰行为的蠕变方程中，生成了将浮冰驱动力与浮冰应力相关的图表。结果表明，在较短的加载时间和低应力水平下，可以使用线性弹性分析来计算冰块驱动力。但是，当浮冰中的应力水平较高或施加载荷的时间跨度较长时，线性和非线性分析会得出冰块驱动力的差异很大。

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《Journal of offshore mechanics and arctic engineering》 |1995年第2期|p.145-150|共6页
作者
E. Evgin; C. Zhan; R. M. W. Frederking;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类施工机械与设备;
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A method to calculate pack ice driving forces

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