| 多晶冰细观模拟方法及压力条件下的力学特性 |
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| 引用本文： | 赵耀.多晶冰细观模拟方法及压力条件下的力学特性[J].海洋工程,2002,20(1):15-19. |
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| 作者姓名： | 赵耀 |
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| 作者单位： | 华中科技大学,交通科学与工程学院,湖北,武汉,430074 |
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| 基金项目： | 国家自然科学基金项目(19672020) |
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| 摘 要： | 针对多晶冰 ,从物体细观的角度形成三维细观数值模拟方法 ,通过计算与实验结果比较 ,证明了其可行性。在此基础上 ,对具有脆性特性即在高应变速率作用下的多晶冰进行了数值实验 ,求出了在单向受压条件下不同冰晶尺寸的微裂纹密度与应力、应变之间的关系。为正确把握多晶冰的力学特性提供了一种新的研究方法
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| 关 键 词： | 多晶冰 三维细观数值模拟 微裂纹密度 |
| 文章编号： | 1005-9865(2002)01-0015-05 |
| 修稿时间： | 2000年12月25 |
Mesoscopic numerical simulation method for polycrystalline ice and its mechanical properties under compression |
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| ZHAO Yao.Mesoscopic numerical simulation method for polycrystalline ice and its mechanical properties under compression[J].Ocean Engineering,2002,20(1):15-19. |
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| Authors: | ZHAO Yao |
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| Abstract: | A three-dimensional numerical simulation method for polycrystalline ice from mesoscopic point of view is presented.The validity of this method is confirmed by numerical calculation and comparison with experimental data.Based on these results the numerical study is performed for polycrystalline ice of brittle state,i.e. at a high strain rate with grain size effect under uniaxial compression.The quantitative results of the micro-crack density related to stress and strain under this loading condition are obtained.A new means to investigate the mechanical properties of polycrystalline ice is thus proposed. |
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| Keywords: | polycrystalline ice three-dimensional mesoscopic numerical simulation micro-crack density |
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