| 多孔板强度的标度行为 |
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| 引用本文： | 傅苒,龙起易,龙期威. 多孔板强度的标度行为[J]. 材料研究学报, 1991, 5(4): 326-330 |
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| 作者姓名： | 傅苒 龙起易 龙期威 |
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| 作者单位： | 中国科学院金属研究所，中国科学院金属研究所，中国科学院国际材料物理中心 沈阳 110015 |
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| 摘 要： | 测量了经过随机打孔的有机玻璃板、钢板及铝板在渗流阈值附近的杨氏模量、屈服强度、断裂强度及断裂功。结果表明,杨氏模量、屈服强度和断裂强度均服从幂律。一般认为,渗流网络的弹性模量主要由扭转力决定,而我们的讨论表明,拉伸力和扭转力共同决定了系统的弹性模量。实验确定的模量指数、屈服指数、断裂指数及分形维数都处于理论界定的范围之内。
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| 关 键 词： | 多孔板 弹性 屈服 断裂 渗流 |
| 收稿时间： | 1991-08-25 |
| 修稿时间： | 1991-08-25 |
SCALING CHARACTERISTICS IN THE STRENGTH OF POROUS PLATES |
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| FU Ran LONG Qiyi LONG Qiwei. SCALING CHARACTERISTICS IN THE STRENGTH OF POROUS PLATES[J]. Chinese Journal of Materials Research, 1991, 5(4): 326-330 |
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| Authors: | FU Ran LONG Qiyi LONG Qiwei |
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| Affiliation: | FU Ran LONG Qiyi LONG Qiwei (Institute of Metal Research,Academia Sinica)(International Center for Materials Physics,Academia Sinica) |
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| Abstract: | We performed the measurements of the bulk modulus E,yield strength S_y,fracture strength S and fracture work W in randomly punched plates of plexiglass,steeland aluminium.A power law relation is observed for E,S_y,and S near the percolationthreshold and the determined exponents of our samples appear to be considerably lowerthan the theoretical determinations for a bond-bending force system,and hence,thebond-stretching nature of the samples is taken into account to interpret the difference. |
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| Keywords: | porous plate elacticity yield fracture percolation |
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