| Large Scale Analysis of Mechanical Properties in 3-D Fiber-Reinforced Composites Using a New Fast Multipole Boundary Element Method |
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| 作者姓名： | 王海涛 姚振汉 |
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| 作者单位： | Institute of Nuclear and New Energy Technology Tsinghua University，Department of Engineering Mechanics，Tsinghua University，Beijing 100084 China，Beijing 100084 China |
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| 摘 要： | Fiber-reinforced composites are commonly used in various engineering applications. The mechanical properties of such composites depend strongly on micro-structural parameters. This paper presents a new boundary element method (BEM) for numerical analysis of the mechanical properties of 3-D fiber-reinforced composites. Acceleration of the BEM is achieved by means of a fast multipole method (FMM), in allowing large scale simulations of a finite elastic domain containing up to 100 elastic fibers to be performed on one personal computer. The maximum number of degrees of freedom can reach a value of over 250 000. The effects of several key micro-structural parameters on the local stress fields and on the effective elastic moduli of fiber-reinforced composites are evaluated. The numerical results are compared with analytical predictions and good agreement is observed. The results show that the fast multipole BEM could be a prom- ising tool for further understanding of the mechanical behavior of such composites.
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| 关 键 词： | 三维纤维增强复合物 快速多极边界元法 力学性能 复合材料 |
| 收稿时间： | 15 March 2007 |
| 修稿时间： | 2007-03-15 |
Large Scale Analysis of Mechanical Properties in 3-D Fiber-Reinforced Composites Using a New Fast Multipole Boundary Element Method |
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| WANG Haitao,YAO Zhenhan.Large Scale Analysis of Mechanical Properties in 3-D Fiber-Reinforced Composites Using a New Fast Multipole Boundary Element Method[J].Tsinghua Science and Technology,2007,12(5):554-561. |
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| Authors: | WANG Haitao YAO Zhenhan |
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| Institution: | 1.Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China; 2.Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China |
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| Abstract: | Fiber-reinforced composites are commonly used in various engineering applications. The mechanical properties of such composites depend strongly on micro-structural parameters. This paper presents a new boundary element method (BEM) for numerical analysis of the mechanical properties of 3-D fiber-reinforced composites. Acceleration of the BEM is achieved by means of a fast multipole method (FMM), in allowing large scale simulations of a finite elastic domain containing up to 100 elastic fibers to be performed on one personal computer. The maximum number of degrees of freedom can reach a value of over 250 000. The effects of several key micro-structural parameters on the local stress fields and on the effective elastic moduli of fiber-reinforced composites are evaluated. The numerical results are compared with analytical predictions and good agreement is observed. The results show that the fast multipole BEM could be a prom- ising tool for further understanding of the mechanical behavior of such composites. |
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| Keywords: | fiber-reinforced composites boundary element fast multipole mechanical properties |
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