• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of structural integrity >Finite element method for solving asphalt mixture problem
【24h】

Finite element method for solving asphalt mixture problem

机译：解决沥青混合料问题的有限元方法

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Purpose - Asphalt mixture is widely used in road engineering, and its performance research is particularly important. But the study of asphalt mixture performance needs a lot of tests, such as bending test, splitting test and so on. It also needs a lot of time and material resources. The purpose of this paper is to obtain test results through finite element numerical simulation, and show that this saves a lot of manpower and material resources. Design/methodology/approach - The mechanical parameters of the material are obtained through uniaxial compression tests. The true stress and plastic strain are calculated according to nominal stress and nominal strain. A constitutive model is established. Then a finite element model of asphalt mixture is established. The numerical simulation and performance study of asphalt mixture bending test is carried out. At the same time, according to the above method, the asphalt mixture is subjected to freeze-thaw cycles and ultraviolet aging, and the mechanical parameters are obtained by a uniaxial compression test. A numerical model is established to simulate the bending characteristics of asphalt mixture after freeze-thaw cycles and ultraviolet aging. Findings - A uniaxial compression test of the asphalt mixture is conducted to obtain nominal stress and nominal strain. The true stress and plastic strain are calculated and the elastic modulus is established with Poisson's ratio as the elastic part, and the true stress and plastic strain as the plastic part. The model is constructed, the finite element model is established and the bending test is numerically simulated. The verified trend is consistent, and the method is feasible. According to the above method, the concrete is subjected to freeze-thaw cycle and ultraviolet aging, and the finite element model is established by using uniaxial compression test to obtain parameters. The bending test is simulated and the verification method is feasible. With the increase of the number of freeze-thaw cycles and the increase of UV aging time, the maximum bending strain of SBS modified asphalt mixture and matrix asphalt mixture is decreased .The low-temperature performance of SBS modified asphalt mixture is better than that of matrix asphalt mixture. Originality/value - A method of simulating asphalt mixture test by finite element method numerical simulation is established. By using this method, the performance of asphalt mixture is studied, which saves a lot of manpower and material resources. At the same time, this method can be used to study the characteristics of asphalt mixture under complex conditions.
机译：目的-沥青混合料广泛用于道路工程，其性能研究尤为重要。但是对沥青混合料性能的研究需要大量的试验，如弯曲试验，劈裂试验等。它还需要大量的时间和物质资源。本文的目的是通过有限元数值模拟获得测试结果，并表明这节省了大量的人力和物力。设计/方法/方法-材料的机械参数通过单轴压缩测试获得。真实应力和塑性应变是根据标称应力和标称应变计算的。建立了本构模型。然后建立了沥青混合料的有限元模型。进行了沥青混合料弯曲试验的数值模拟和性能研究。同时，根据上述方法，对沥青混合料进行冻融循环和紫外线老化，并通过单轴压缩试验获得机械参数。建立了数值模型，模拟了冻融循环和紫外线老化后沥青混合料的弯曲特性。发现-对沥青混合料进行单轴压缩试验，以获得标称应力和标称应变。以泊松比为弹性部分，以真实应力和塑性应变为塑性部分，计算出真实应力和塑性应变，建立弹性模量。建立了模型，建立了有限元模型，并对弯曲试验进行了数值模拟。经验证的趋势是一致的，该方法是可行的。根据上述方法，对混凝土进行冻融循环和紫外线老化，并通过单轴压缩试验建立有限元模型以获得参数。对弯曲试验进行了仿真，验证了方法的可行性。随着冻融循环次数的增加和紫外线老化时间的增加，SBS改性沥青混合料和基体沥青混合料的最大弯曲应变减小。SBS改性沥青混合料的低温性能优于基质沥青混合料。原创性/价值-建立了一种通过有限元数值模拟来模拟沥青混合料试验的方法。通过该方法对沥青混合料的性能进行了研究，节省了大量的人力物力。同时，该方法可用于研究复杂条件下沥青混合料的特性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号