Pavement Analysis and Design by Multiphysics Reconstructing Algorithm for the Virtual Asphalt Mixture Based on the Discrete-Element Method
Based on the Particle Flow Code in Two dimensions (PFC2D), an algorithm for modeling the two-dimensional virtual asphalt mixture was proposed in this study. By combining the AIMS scanning technology (Aggregate Imaging Measurement System) with the designed stochastic algorithm, the virtual coarse agg...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/5180562 |
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| _version_ | 1832565126041960448 |
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| author | Danhua Wang Xunhao Ding Tao Ma Weiguang Zhang Deyu Zhang |
| author_facet | Danhua Wang Xunhao Ding Tao Ma Weiguang Zhang Deyu Zhang |
| author_sort | Danhua Wang |
| collection | DOAJ |
| description | Based on the Particle Flow Code in Two dimensions (PFC2D), an algorithm for modeling the two-dimensional virtual asphalt mixture was proposed in this study. By combining the AIMS scanning technology (Aggregate Imaging Measurement System) with the designed stochastic algorithm, the virtual coarse aggregates could be generated rapidly and precisely. Different from the conventional methods, the contour shapes of the coarse aggregates were rebuilt only to balance the shape modeling precision and simulation efficiency. Then by distributing the coarse particles within container, virtual skeletons were formed firstly. An innovate algorithm was proposed afterwards to distinguish the external and internal area of the coarse aggregates and then model the mastic part by filling the irregular hollow shape with uniformly arranged balls. By deleting the mastic balls randomly, the voids were reconstructed consistent with the actual ratio. In the end, the virtual uniaxial compressive tests of AC-16 were simulated within PFC2D and the dynamic modulus at different load frequencies was predicted. The results indicated that the proposed algorithm could not only model the asphalt mixture precisely but also characterized its mechanical behavior as well. |
| format | Article |
| id | doaj-art-b9b85838ba074b0a9cbacd69b98a94ca |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-b9b85838ba074b0a9cbacd69b98a94ca2025-02-03T01:09:27ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/51805625180562Pavement Analysis and Design by Multiphysics Reconstructing Algorithm for the Virtual Asphalt Mixture Based on the Discrete-Element MethodDanhua Wang0Xunhao Ding1Tao Ma2Weiguang Zhang3Deyu Zhang4School of Computer Engineering, Nanjing Institute of Technology, Nanjing, Jiangsu 211167, ChinaSchool of Transportation, Southeast University, 2 Sipailou, Nanjing, Jiangsu 210096, ChinaSchool of Transportation, Southeast University, 2 Sipailou, Nanjing, Jiangsu 210096, ChinaSchool of Transportation, Southeast University, 2 Sipailou, Nanjing, Jiangsu 210096, ChinaSchool of Engineering and Architecture, Nanjing Institute of Technology, Nanjing, Jiangsu 211167, ChinaBased on the Particle Flow Code in Two dimensions (PFC2D), an algorithm for modeling the two-dimensional virtual asphalt mixture was proposed in this study. By combining the AIMS scanning technology (Aggregate Imaging Measurement System) with the designed stochastic algorithm, the virtual coarse aggregates could be generated rapidly and precisely. Different from the conventional methods, the contour shapes of the coarse aggregates were rebuilt only to balance the shape modeling precision and simulation efficiency. Then by distributing the coarse particles within container, virtual skeletons were formed firstly. An innovate algorithm was proposed afterwards to distinguish the external and internal area of the coarse aggregates and then model the mastic part by filling the irregular hollow shape with uniformly arranged balls. By deleting the mastic balls randomly, the voids were reconstructed consistent with the actual ratio. In the end, the virtual uniaxial compressive tests of AC-16 were simulated within PFC2D and the dynamic modulus at different load frequencies was predicted. The results indicated that the proposed algorithm could not only model the asphalt mixture precisely but also characterized its mechanical behavior as well.http://dx.doi.org/10.1155/2018/5180562 |
| spellingShingle | Danhua Wang Xunhao Ding Tao Ma Weiguang Zhang Deyu Zhang Pavement Analysis and Design by Multiphysics Reconstructing Algorithm for the Virtual Asphalt Mixture Based on the Discrete-Element Method Advances in Civil Engineering |
| title | Pavement Analysis and Design by Multiphysics Reconstructing Algorithm for the Virtual Asphalt Mixture Based on the Discrete-Element Method |
| title_full | Pavement Analysis and Design by Multiphysics Reconstructing Algorithm for the Virtual Asphalt Mixture Based on the Discrete-Element Method |
| title_fullStr | Pavement Analysis and Design by Multiphysics Reconstructing Algorithm for the Virtual Asphalt Mixture Based on the Discrete-Element Method |
| title_full_unstemmed | Pavement Analysis and Design by Multiphysics Reconstructing Algorithm for the Virtual Asphalt Mixture Based on the Discrete-Element Method |
| title_short | Pavement Analysis and Design by Multiphysics Reconstructing Algorithm for the Virtual Asphalt Mixture Based on the Discrete-Element Method |
| title_sort | pavement analysis and design by multiphysics reconstructing algorithm for the virtual asphalt mixture based on the discrete element method |
| url | http://dx.doi.org/10.1155/2018/5180562 |
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