| 路面结构有限元模型的选择 |
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| 引用本文： | 李清富,杨泽涛,周利.路面结构有限元模型的选择[J].河南科学,2007,25(3):436-438. |
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| 作者姓名： | 李清富 杨泽涛 周利 |
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| 作者单位： | 郑州大学,环境与水利学院,郑州,450001 |
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| 基金项目： | 河南省高校创新人才培养计划项目 |
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| 摘 要： | 随着有限单元法的发展,许多大型有限元分析软件在工程中得到了广泛应用,但应用这些软件的关键在于如何创建一个能反映实际情况的模型.以路面结构有限元模型的选择为例,详细阐述了在创建模型的过程中应考虑的问题,以及如何优化模型使其与实际相吻合.计算分析结果表明,模型大小和边界条件对路面结构的最大垂直应力和竖向位移值均有影响,尤其对竖向位移值的影响更大.通过对比,对于研究的路面结构采用大小为5 m×5 m×5 m的立方体、边界条件为“固支滑动自由”的模型,其弯沉值与理论计算值最接近,因此能够较好的模拟路面的真实情况,且运算时间较短.
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| 关 键 词： | 有限元 路面结构 荷载模型 |
| 文章编号： | 1004-3918(2007)03-0436-03 |
| 修稿时间： | 2007-02-06 |
The Choice of Finite Element Model of Pavement Structure |
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| LI Qing-fu,YANG Ze-tao,ZHOU Li.The Choice of Finite Element Model of Pavement Structure[J].Henan Science,2007,25(3):436-438. |
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| Authors: | LI Qing-fu YANG Ze-tao ZHOU Li |
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| Institution: | School of Environment and Water Conservancy, Zhengzhou University, Zhengzhou 450002, China |
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| Abstract: | More and more people resolve problems by finite-element method,but it is so difficult to make model close to the true situation.The paper expatiate on the problem during modelling and on how to optimize the model so as to more close to facts with examples of the choice of 3D finite element model of pavement structure.The analysis shows that the values of maximal vertical stress and the vertical displacement are both influenced by the model measure and the boundary condition.Compared calculation value with theoretical value of the flexure,the best model measures is 5 m × 5 m × 5 m,and the better BC is"fixed stay and sliding and free face".At the same time the working time is less,so the author commends the model to be used. |
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| Keywords: | finite element pavement load model |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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