Three-dimensional stress singularities at the tip of a grain triple junction line intersecting the free surface

Catalin R.Picu; Vijay Gupta

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Three-dimensional stress singularities at the tip of a grain triple junction line intersecting the free surface

机译：与自由表面相交的晶粒三重结线尖端的三维应力奇异性

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摘要

The stress singularity at the point of intersection of a grain triple junction line with the free surface has been numerically evaluated in single-phase polycrystals of cubic and hexagonal grains. The angle spanned by the grain boundaries, the orientation of the crystal axes within each grain and the position of the triple junction line with respect to the free surface were taken as variables, and their effect on the singularity exponent |? (defined by |ò??|?~|?-1) determined.

机译：在立方和六角形晶粒的单相多晶中，已经通过数值评估了晶粒三重结线与自由表面相交处的应力奇异性。将晶界所跨越的角度，每个晶粒内的晶轴取向以及相对于自由表面的三重结线的位置作为变量，它们对奇异指数|η的影响。（由|ò?? |？〜|？-1定义）确定。

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来源
《Journal of the Mechanics and Physics of Solids》 |1997年第9期|p.1495-1520|共26页
作者
Catalin R.Picu; Vijay Gupta;
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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
中图分类固体力学;
关键词
stress concentration; crack nucleation; microstructures;

机译：应力集中裂纹形核微观结构;

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1. STRESS SINGULARITIES AT TRIPLE JUNCTIONS WITH FREELY SLIDING GRAINS [J] . Picu CR., Gupta V. International Journal of Solids and Structures . 1996,第11期

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机译：各向异性三维空间中在毛细管和电迁移力作用下具有三重连接奇异性的固体表面和界面的介观非平衡热力学
3. Mesoscopic nonequilibrium thermodynamics of solid surfaces and interfaces with triple junction singularities under the capillary and electromigration forces in anisotropic three-dimensional space [J] . Tarik Omer Ogurtani The Journal of Chemical Physics . 2006,第14期

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4. On the Interaction of Grain Boundaries and Triple Junctions with a Free Surface [C] . P. Mullner International Workshop on Local Lattice Rotations and Dislinations in Microstructures of Distorted Crystalline Materials . 2000

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Three-dimensional stress singularities at the tip of a grain triple junction line intersecting the free surface

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