| RTM充模过程数值模拟的隐式有限元算法 |
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| 引用本文： | 谭华, 晏石林, 王继辉. RTM充模过程数值模拟的隐式有限元算法[J]. 固体力学学报, 2004, 25(3): 349-354. doi: 10.3969/j.issn.0254-7805.2004.03.019 |
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| 作者姓名： | 谭华 晏石林 王继辉 |
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| 作者单位： | 武汉理工大学工程力学系,武汉,430070; 武汉理工大学工程力学系,武汉,430070; 武汉理工大学材料学院,武汉,430070 |
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| 基金项目： | 国家自然科学基金 ( 19970 2 49)，国家 863项目 ( 2 0 0 1AA3 3 5 0 2 0 )资助 |
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| 摘 要： | 建立了基于欧拉方法描述树脂传递模塑(RTM)工艺充模过程的基本数学方程,并采用有限元隐式时间积分方法对基本方程进行了数值求解.编制了基于隐式有限元算法及传统有限元控制体算法的程序,通过具体算例比较了这两种算法的优缺点.与传统的有限元控制体法相比,该文提出的隐式有限元算法能节省计算时间,特别适合于单元、节点数目多的情况.隐式有限元算法是一种纯有限元方法,不需要使用控制体积技术,采用该算法计算出的流动前沿与时间步长无关.
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| 关 键 词： | 树脂传递模塑 Darcy定律 有限元法 隐式时间积分 时间步长 |
| 修稿时间： | 2003-07-29 |
NUMERICAL SIMULATION OF RESIN TRANSFER MOLDING USING IMPLICIT FINITE ELEMENT METHOD |
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| NUMERICAL SIMULATION OF RESIN TRANSFER MOLDING USING IMPLICIT FINITE ELEMENT METHOD[J]. Chinese Journal of Solid Mechanics, 2004, 25(3): 349-354. doi: 10.3969/j.issn.0254-7805.2004.03.019 |
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| Authors: | Tan Hua Yan Shilin Wang Jihui |
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| Affiliation: | Tan Hua 1 Yan Shilin 1 Wang Jihui 2 |
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| Abstract: | A mathematical equation described by Euler method for simulating RTM process is established, and a finite element method with implicit time integration is used to solve this equation. Computing codes based on the implicit finite element method and the traditional explicit finite element control volume method are developed respectively. Numerical examples demonstrate that the implicit algorithm is of higher efficiency and can save a large amount of CPU time, especially for complex three dimensional simulations. In fact, the implicit algorithm is a pure finite element method. The accuracy of flow front advancement by implicit method is independent of time-step selected. |
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| Keywords: | resin transfer molding Darcy's law finite element method implicit time integration time-step |
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