{"title":"泥石流冲击下拦挡坝大变形破坏过程的三维-SPH-DEM耦合模拟,结合非线性碰撞-约束结合模型","authors":"","doi":"10.1016/j.enganabound.2024.105877","DOIUrl":null,"url":null,"abstract":"<div><p>Computational analysis of debris flow dynamics and its impact on structures, including check dams, is a long-standing problem for hazard prevention. It's a complex issue involving two-phase interaction between fluid mass and solid structure, as well as the large deformation failure of check dams, therefore, three-dimensional simulation of this process remains a scientific challenge. In this paper, a 3D-SPH-DEM coupling model is proposed by incorporating a nonlinear collision-constraint bond model. The model first builds upon our previous 3D-SPH model based on Herschel-Bulkley-Papanastasiou (HBP) rheology to describe the fluid behavior within the debris flow process. Secondly, a constituent particle-based DEM block representation method is integrated to model check dams, and the fluid-solid interaction force between debris flow particles and DEM blocks is obtained. Additionally, a nonlinear collision-constraint bond model with a predefined coefficient <em>α</em> is incorporated to simulate the solid interaction between DEM blocks and characterize the different strength levels of check dams. To verify the proposed model, a well-documented pier cubes failure experiment in a previous study is used, wherein the simulation results well reproduce the failure process as observed in the experiment from the quantitative perspective. The 2010 Yohutagawa debris flow event is selected as the case study. Results show that the proposed model well simulates the fluid-solid interaction phenomenon and can effectively explore the large deformation failure process of check dams under debris flow impact.</p></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":null,"pages":null},"PeriodicalIF":4.2000,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"3D-SPH-DEM coupling simulation for the large deformation failure process of check dams under debris flow impact incorporating the nonlinear collision-constraint bond model\",\"authors\":\"\",\"doi\":\"10.1016/j.enganabound.2024.105877\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Computational analysis of debris flow dynamics and its impact on structures, including check dams, is a long-standing problem for hazard prevention. It's a complex issue involving two-phase interaction between fluid mass and solid structure, as well as the large deformation failure of check dams, therefore, three-dimensional simulation of this process remains a scientific challenge. In this paper, a 3D-SPH-DEM coupling model is proposed by incorporating a nonlinear collision-constraint bond model. The model first builds upon our previous 3D-SPH model based on Herschel-Bulkley-Papanastasiou (HBP) rheology to describe the fluid behavior within the debris flow process. Secondly, a constituent particle-based DEM block representation method is integrated to model check dams, and the fluid-solid interaction force between debris flow particles and DEM blocks is obtained. Additionally, a nonlinear collision-constraint bond model with a predefined coefficient <em>α</em> is incorporated to simulate the solid interaction between DEM blocks and characterize the different strength levels of check dams. To verify the proposed model, a well-documented pier cubes failure experiment in a previous study is used, wherein the simulation results well reproduce the failure process as observed in the experiment from the quantitative perspective. The 2010 Yohutagawa debris flow event is selected as the case study. Results show that the proposed model well simulates the fluid-solid interaction phenomenon and can effectively explore the large deformation failure process of check dams under debris flow impact.</p></div>\",\"PeriodicalId\":51039,\"journal\":{\"name\":\"Engineering Analysis with Boundary Elements\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.2000,\"publicationDate\":\"2024-07-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Engineering Analysis with Boundary Elements\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0955799724003527\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Engineering Analysis with Boundary Elements","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0955799724003527","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
摘要
泥石流动力学及其对结构(包括拦河坝)影响的计算分析是一个长期存在的防灾问题。这是一个复杂的问题,涉及流体质量与固体结构之间的两相相互作用,以及拦河坝的大变形破坏,因此,对这一过程进行三维模拟仍是一项科学挑战。本文结合非线性碰撞-约束键模型,提出了一种三维-SPH-DEM 耦合模型。该模型首先建立在我们之前基于 Herschel-Bulkley-Papanastasiou (HBP) 流变学的 3D-SPH 模型基础上,以描述碎屑流过程中的流体行为。其次,将基于成分颗粒的 DEM 块表示方法集成到拦挡坝模型中,并获得泥石流颗粒与 DEM 块之间的流固相互作用力。此外,还加入了一个具有预定系数 α 的非线性碰撞-约束结合模型,以模拟 DEM 块体之间的固体相互作用,并描述不同强度等级的拦挡坝。为了验证所提出的模型,我们使用了先前研究中一个记录详实的墩立方体破坏实验,从定量角度来看,模拟结果很好地再现了实验中观察到的破坏过程。案例研究选择了 2010 年的 Yohutagawa 泥石流事件。结果表明,所提出的模型很好地模拟了流固相互作用现象,并能有效地探索泥石流冲击下拦挡坝的大变形破坏过程。
3D-SPH-DEM coupling simulation for the large deformation failure process of check dams under debris flow impact incorporating the nonlinear collision-constraint bond model
Computational analysis of debris flow dynamics and its impact on structures, including check dams, is a long-standing problem for hazard prevention. It's a complex issue involving two-phase interaction between fluid mass and solid structure, as well as the large deformation failure of check dams, therefore, three-dimensional simulation of this process remains a scientific challenge. In this paper, a 3D-SPH-DEM coupling model is proposed by incorporating a nonlinear collision-constraint bond model. The model first builds upon our previous 3D-SPH model based on Herschel-Bulkley-Papanastasiou (HBP) rheology to describe the fluid behavior within the debris flow process. Secondly, a constituent particle-based DEM block representation method is integrated to model check dams, and the fluid-solid interaction force between debris flow particles and DEM blocks is obtained. Additionally, a nonlinear collision-constraint bond model with a predefined coefficient α is incorporated to simulate the solid interaction between DEM blocks and characterize the different strength levels of check dams. To verify the proposed model, a well-documented pier cubes failure experiment in a previous study is used, wherein the simulation results well reproduce the failure process as observed in the experiment from the quantitative perspective. The 2010 Yohutagawa debris flow event is selected as the case study. Results show that the proposed model well simulates the fluid-solid interaction phenomenon and can effectively explore the large deformation failure process of check dams under debris flow impact.
期刊介绍:
This journal is specifically dedicated to the dissemination of the latest developments of new engineering analysis techniques using boundary elements and other mesh reduction methods.
Boundary element (BEM) and mesh reduction methods (MRM) are very active areas of research with the techniques being applied to solve increasingly complex problems. The journal stresses the importance of these applications as well as their computational aspects, reliability and robustness.
The main criteria for publication will be the originality of the work being reported, its potential usefulness and applications of the methods to new fields.
In addition to regular issues, the journal publishes a series of special issues dealing with specific areas of current research.
The journal has, for many years, provided a channel of communication between academics and industrial researchers working in mesh reduction methods
Fields Covered:
• Boundary Element Methods (BEM)
• Mesh Reduction Methods (MRM)
• Meshless Methods
• Integral Equations
• Applications of BEM/MRM in Engineering
• Numerical Methods related to BEM/MRM
• Computational Techniques
• Combination of Different Methods
• Advanced Formulations.