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首页> 外文期刊>Philosophical Magazine Letters >Creep behaviour of ice single crystals loaded in torsion explained by dislocation cross-slip
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Creep behaviour of ice single crystals loaded in torsion explained by dislocation cross-slip

机译：错位错滑解释了扭转载荷下的冰单晶的蠕变行为

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Torsion creep experiments are carried out in order to understand the physics of ice plasticity. A dislocation spreading mechanism based on double cross-slip of basal dislocations is proposed to explain the strong plastic anisotropy and the power law relationship between stress and strain rates. The scenario is tested using three-dimensional dislocation dynamics simulations. Numerical investigations give a stress exponent n = 2.3 in agreement with experimental measurements. This dislocation spreading mechanism sheds a new light on the interpretation of former experimental observations.View full textDownload full textKeywordsdislocation dynamics, creep, ice, cross-slipRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/09500839.2012.658447
机译：为了了解冰的可塑性，进行了扭转蠕变实验。提出了一种基于基底位错的双重错位的位错扩展机制，以解释强塑性各向异性以及应力与应变率之间的幂律关系。该场景使用三维位错动力学模拟进行了测试。数值研究得出与实验测量结果一致的应力指数n = 2.3。这种位错扩散机制为以前的实验观察提供了新的思路。查看全文下载全文关键词位错动力学，蠕变，冰，交叉滑动相关的var addthis_config = {ui_cobrand：“泰勒和弗朗西斯在线”，service_compact：“ citeulike，netvibes， twitter，technorati，美味，linkedin，facebook，stumbleupon，digg，google，更多“，发布：” ra-4dff56cd6bb1830b“};添加到候选列表链接永久链接http://dx.doi.org/10.1080/09500839.2012.658447

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