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| 基于半圆弯曲试验的有限元模型收敛性分析 | |
| 引用本文： | 段跃华,付欣,张肖宁.基于半圆弯曲试验的有限元模型收敛性分析[J].西部交通科技,2012(4):1-4. |
| 作者姓名： | 段跃华 付欣 张肖宁 |
| 作者单位： | 1. 广西交通投资集团桂海高速公路有限公司,广西南宁,530021 2. 广东华路交通科技有限公司,广东广州,510420 3. 华南理工大学土木与交通学院,广东广州,510640 |
| 基金项目： | 国家西部交通建设科技项目《基于芯样的沥青路面疲劳与车辙指标评价试验方法研究》 |
| 摘 要： | 文章采用有限元方法对半圆弯曲试验(SCB)进行数值模拟,对有限元模型建立过程中所涉及到的约束条件和单元尺寸进行了收敛性分析。分析结果表明:相对于单元尺寸,约束条件对SCB试件底部拉应力的影响较大;SCB试件底部支座处约束UY和UZ方向的位移计算有限元解与理论解吻合度较高;综合考虑计算精度和运算时间,SCB模型采用2mm的单元尺寸较为适宜。 |
| 关 键 词： | 道路工程 半圆弯曲试验 有限元模型 收敛性分析 数值模拟 |
Convergence Analysis of FEM Model Based on Semi-circular Banding Test |
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| DUAN Yue-hua,FU Xin,ZHANG Xiao-ning.Convergence Analysis of FEM Model Based on Semi-circular Banding Test[J].Western China Communication Science & Technology,2012(4):1-4. | |
| Authors: | DUAN Yue-hua FU Xin ZHANG Xiao-ning |
| Institution: | 1. Guihai Expressway Co., Ltd. of Guangxi Communications Investment Group, Nanning, Guangxi, 530021; 2. Guangdong Hualu Communications Technology Co., Ltd., Guangzhou, Guangdong, 510420; 3. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou,Guangdong, 510640) |
| Abstract: | The article used the finite element method to conduct the numerical simulation on semi-circular bending test （SCB）, and made the convergence analysis on the constraint conditons and unit size involved in the process of building the finite element model. The analysis result that： compared to the unit size, the constraint condition has a larger effect on tensile stress of SCB specimen bottom; the calculation finite element solution, restraining the displacement in UY and UZ directions at the supporting part of SCB spadmen bottom, has high degree of consistence with the theoretical solulion; considering the calculation predsion and computation time, 2mm in unit size was appropriate for the SCB model . |
| Keywords: | Road engineerng Semi-circular bending test FEM model Convergence analysis Numerical simulation |
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