| 平面五次对称准晶中的应力强度因子 |
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| 引用本文： | 郭玉翠,范天佑.平面五次对称准晶中的应力强度因子[J].北京邮电大学学报,1998,21(4):62-65. |
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| 作者姓名： | 郭玉翠 范天佑 |
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| 作者单位： | [1]北京邮电大学基础科学部 [2]北京理工大学材料科学研究中心 |
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| 摘 要： | 引入一组新的应力函数来讨论平面五次对称准晶的弹性力学问题，将问题中的１８个弹性力学基本方程简化成一个高阶偏微分方程，并且应用Ｆｏｕｒｉｅｒ变换和对偶积分方程方法，求解了平面五次对称准晶结构中的Ｇｒｉｆｖｆｉｔｈ裂纹问题，得到了应力强度因子和应变能释放率，它们是研究材料变形的断裂的关键物理量。
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| 关 键 词： | 应力强度因子 准晶 裂纹 应力函数 能量释放率 |
Stress Intensity Factor of Pentagonal Quasicrystals |
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| Guo Yucui.Stress Intensity Factor of Pentagonal Quasicrystals[J].Journal of Beijing University of Posts and Telecommunications,1998,21(4):62-65. |
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| Authors: | Guo Yucui |
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| Abstract: | A set of new stress functions are introduced for analyzing the elasticity of pentagonal quasicrystals.By which the 18 basic equations on coupling phonon phason fields are reduced to a single higher order partial differential equation and its solution for a Griffith crack boundary problem of pentagonal quasicrystals is obtained by applying Fourier transform and dual integral equations.The stress intensity factor and strain energy release rate are worked out which are the key physical quantities for studying the deformation and fracture of the material. |
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| Keywords: | stress intensity factor quasicrystal griffith crack stress function energy release rate |
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