Elliptic holes in octagonal quasicrystals

Elliptic holes in octagonal quasicrystals
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八角准晶体中的椭圆孔

DOI:
10.1088/1674-1056/22/1/016102
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发表时间:
2013
期刊:
影响因子:
1.7
通讯作者:
Li Lian-He
Li Lian-He
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Li Lian-He

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发展了八角形准晶平面弹性的应力势函数理论。通过引入应力函数,将涉及八角形准晶弹性问题的大量基本方程化为一个偏微分方程组。进一步,我们将各向异性弹性理论的复变函数方法(Lekhnitskii方法)推广到准晶理论。利用保角变换,给出了准晶椭圆孔的精确解。作为结果的特例,得到了Griffith裂纹问题的解。作为结果,解析地导出了声子应力强度因子。
The stress potential function theory for the plane elasticity of octagonal quasicrystals is developed. By introducing stress functions, a large number of basic equations involving the elasticity of octagonal quasicrystals are reduced to a single partial differential equation. Furthermore, we develop the complex variable function method (Lekhnitskii method) for anisotropic elasticity theory to that for quasicrystals. With the help of conformal transformation, an exact solution for the elliptic hole of quasicrystals is presented. The solution of the Griffith crack problem, as a special case of the results, is obtained. As a consequence, the phonon stress intensity factor is derived analytically.
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