【Key words】 Large deformation fracture； Digital moirémethod with circular and radial gratings； Sector division frame； 3-nested-deformation model；
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While, experimental method performs to be effective due to its independence on materials. Because of deficiency on the present experimental techniques, there is less experimental analysis of large deformation fracture mechanics in recent reports.
而不受材料性能限制的实验测试方法,成为大变形断裂力学问题研究的有效手段,但由于受到实验技术的限制,目前工作甚少。
参考来源 - 大变形断裂力学问题三维变形场实验研究·2,447,543篇论文数据，部分数据来源于NoteExpress
用板壳大变形理论转动角计算方法，对阜新矿区王营井田煤层大变形断裂和破裂带进行分析和预测。
The method of plate and shall large deformation rotation analysis is used in Wangying coal mining district, Fuxin area to predict faults and fractures in coal seams.
该方法是基于曲梁大变形理论及断裂力学而提出来的。
The approach is based on large deflection characterisation of a curved beam, coupled with fracture mechanics concepts.
研究结果表明：经过大变形后，由于纯铜的晶粒得以细化，抗拉强度、屈服强度、硬度和断裂延伸率都显著增加。
The results show the tensile strength, yield strength, hardness and elongation increased obviously due to the decreasing of the grain size of pure Cu after severe plastic deformation.
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