| 基于细观结构有限元模型的环氧沥青混合料间接拉伸试验研究 |
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| 引用本文： | 王江洋,钱振东.基于细观结构有限元模型的环氧沥青混合料间接拉伸试验研究[J].东南大学学报,2011,27(1):65-69. |
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| 作者姓名： | 王江洋 钱振东 |
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| 作者单位： | 东南大学智能运输系统研究中心,南京,210096 |
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| 基金项目： | Program for New Century Excellent Talents in University(No. NCET-08-0118); Specialized Research Fund for the Doctoral Program of Higher Education (No. 20090092110049) |
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| 摘 要： | 运用有限元方法建立环氧沥青混合料细观结构模型,对其间接拉伸试验(IDT)进行数值模拟.首先借助图像处理技术得到由集料和沥青砂浆组成的环氧沥青混合料二相细观结构,并通过蠕变试验获取沥青砂浆常温下的黏弹性材料参数,最后结合有限元手段建立包含集料、砂浆等在内的混合料细观结构有限元模型.数值模拟结果表明,有限元计算的混合料劲度...
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| 关 键 词： | 微观结构 环氧沥青混合料 图像处理技术 有限元模型 间接拉伸试验 |
Indirect tension test of epoxy asphalt mixtureusing microstructural finite-element model |
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| Wang Jiangyang Qian Zhendong.Indirect tension test of epoxy asphalt mixtureusing microstructural finite-element model[J].Journal of Southeast University(English Edition),2011,27(1):65-69. |
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| Authors: | Wang Jiangyang Qian Zhendong |
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| Institution: | Wang Jiangyang Qian Zhendong(Intelligent Transportation System Research Center,Southeast University,Nanjing 210096,China) |
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| Abstract: | A finite-element model of the thermosetting epoxy asphalt mixture(EAM) microstructure is developed to simulate the indirect tension test(IDT).Image techniques are used to capture the EAM microstructure which is divided into two phases:aggregates and mastic.A viscoelastic constitutive relationship,which is obtained from the results of a creep test,is used to represent the mastic phase at intermittent temperatures.Model simulation results of the stiffness modulus in IDT compare favorably with experimental dat... |
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| Keywords: | microstructure epoxy asphalt mixture image techniques finite-element model indirect tension test |
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