Engineering Analysis with Boundary Elements最新文献_第10页

A novel RBF-DDM method for modelling transient droplet spreading in simple oil shear flow 用于模拟简单油液剪切流中瞬态液滴扩散的新型 RBF-DDM 方法

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2025-02-01 DOI: 10.1016/j.enganabound.2024.106099

Muhamad Dwi Septiyanto, Eko Prasetya Budiana, Syamsul Hadi

{"title":"A novel RBF-DDM method for modelling transient droplet spreading in simple oil shear flow","authors":"Muhamad Dwi Septiyanto, Eko Prasetya Budiana, Syamsul Hadi","doi":"10.1016/j.enganabound.2024.106099","DOIUrl":"10.1016/j.enganabound.2024.106099","url":null,"abstract":"<div><div>This current numerical model of droplet spreading in a simple oil shear flow is assessed using a hybrid combination of the radial basis function (RBF) and domain decomposition method (DDM). The complex interfacial interaction understanding of oil-water is challenging to consider appropriately with the RBF-DDM numerical solution. The governing equations, which consist of the Navier-Stokes equation in primitive variable form, the Cahn-Hilliard equation, and the Poisson equation, are solved using the Radial Basis Function (RBF) method for spatial derivatives and the forward Euler method for time derivatives. This combination of RBF and DDM successfully addressed the complex domain multifluid interaction, with the dense matrix solved in several subdomains. The capillary number (Ca) and initial oil velocity are two independent variables analyzed, with the deformation coefficient serving as the primary dependent variable. The findings reveal that both variables affect the deformation coefficient presented with the deformation based on non-dimensionalization time. As theoretically stated, the interfacial tension is inversely proportional to the Ca, meaning that a possibly high Ca leads to a higher deformation coefficient. To get accurate elaboration, the convergence analysis and statistical model analysis use root mean square divergence (RMSDIV) and root mean square error (RMSE), respectively.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"171 ","pages":"Article 106099"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142901661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A preconditioned 3D multi-domain FMIBEM for near-fault ground motion simulation considering the complete physical process of fault-path-layered sedimentary basin 考虑断径-层状沉积盆地完整物理过程的近断层地震动模拟预处理三维多域FMIBEM

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2025-02-01 DOI: 10.1016/j.enganabound.2024.106088

Zhongxian Liu , Zhenen Huang , Qinghua Han , Lei Huang

{"title":"A preconditioned 3D multi-domain FMIBEM for near-fault ground motion simulation considering the complete physical process of fault-path-layered sedimentary basin","authors":"Zhongxian Liu , Zhenen Huang , Qinghua Han , Lei Huang","doi":"10.1016/j.enganabound.2024.106088","DOIUrl":"10.1016/j.enganabound.2024.106088","url":null,"abstract":"<div><div>Efficient and precise numerical methods, grounded in physical processes, are crucial for studying ground motion distribution in near-fault complex sites. This study introduces a preconditioned 3D multi-domain fast multipole indirect boundary element method (FMIBEM) that considers complete physical processes, including fault rupture, path propagation, and near-surface complex site response. The computational efficiency of the preconditioned FMIBEM in solving high-frequency ground motions (>3 Hz) is enhanced by over 97 % compared to the regular FMIBEM. Employing preconditioned FMIBEM, we simulate broadband (0–5 Hz) ground motions in near-fault sedimentary basins on a regular workstation, revealing that: (I) sedimentary basins, especially layered ones, significantly amplify near-fault ground motion, with the amplification coefficient of PGA exceeding 5.0; (II) layered sedimentary basins notably increase permanent displacement due to fault slip; (III) sedimentary basins transform unidirectional velocity pulses from fault slip into bidirectional pulses with larger amplitude and longer period.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"171 ","pages":"Article 106088"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142901662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Third-order MFS for solving two-dimensional Stokes flow problems 求解二维Stokes流动问题的三阶MFS

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2025-02-01 DOI: 10.1016/j.enganabound.2024.106092

Chein-Shan Liu , Chia-Ming Fan , Chung-Lun Kuo

引用次数: 0

Efficient surface reconstruction for SPH method and its application to simulation of solid-solid contact and fluid-rigid body interaction SPH方法的高效表面重构及其在固-固接触和流-刚体相互作用模拟中的应用

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2025-02-01 DOI: 10.1016/j.enganabound.2024.106086

Yihua Xiao , Duping Zhai , Dongdong Jiang , Jianli Shao

{"title":"Efficient surface reconstruction for SPH method and its application to simulation of solid-solid contact and fluid-rigid body interaction","authors":"Yihua Xiao , Duping Zhai , Dongdong Jiang , Jianli Shao","doi":"10.1016/j.enganabound.2024.106086","DOIUrl":"10.1016/j.enganabound.2024.106086","url":null,"abstract":"<div><div>Explicit surface reconstruction is useful for treating challenging boundary-related problems in smoothed particle hydrodynamics (SPH), for example, high-accuracy contact treatment. In this work, an efficient local surface reconstruction method (LSRM) is proposed. It first identifies boundary layer particles and then employs the Delaunay triangulation technique to reconstruct explicit surfaces from the boundary layer particles. The surface reconstruction efficiency of the LSRM is examined by two-dimensional and three-dimensional test cases and compared with that of a global surface reconstruction method (GSRM) proposed previously. Compared with the GSRM, the LSRM shows an increasing advantage in efficiency as the number of particles increases, and its efficiency can be dozens of times higher when the number of particles is large. The LSRM is incorporated into SPH for contact treatment and is used to simulate some typical contact problems. The simulation results show that the LSRM is applicable to solid-solid contact problems involving friction and large deformation and fluid-rigid body interaction problems with complex free surface phenomena. Compared with the GSRM, the LSRM can produce simulation results with similar accuracy and significantly improve the overall efficiency of SPH simulation.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"171 ","pages":"Article 106086"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142974916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The overload phenomenon in dynamic Brazilian disc: Insights from Voronoi-based discontinuous deformation analysis 动态巴西圆盘的过载现象：来自基于voronoi的不连续变形分析的见解

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2025-02-01 DOI: 10.1016/j.enganabound.2025.106115

Kaiyu Zhang , Feng Liu , Jun Zhu , Xuehua Zhao , Aiming Zhang , Yanbing Zhao , Zijun Hu

{"title":"The overload phenomenon in dynamic Brazilian disc: Insights from Voronoi-based discontinuous deformation analysis","authors":"Kaiyu Zhang , Feng Liu , Jun Zhu , Xuehua Zhao , Aiming Zhang , Yanbing Zhao , Zijun Hu","doi":"10.1016/j.enganabound.2025.106115","DOIUrl":"10.1016/j.enganabound.2025.106115","url":null,"abstract":"<div><div>The tensile strength of rocks is a critical information in the design of operational blasting and support systems in rock engineering. However, it is important to note that in rock dynamic, the measured tensile strength in the BD test may be higher than the real value due to the overload effect. In this study, the overload effect and dynamic tensile strength correction are investigated by comparing the DDA simulation of BD tensile test with laboratory results from split Hopkinson pressure bar (SHPB) tests. A calibration flow for Voronoi-based DDA is implemented to quantitatively evaluate the dynamic tensile strength properties of rocks. To replicate the rate effect observed in dynamic tensile tests, a modification strategy is proposed, which considers the influence of the loading rate on the strength meso‑parameters. To obtain the accurate dynamic tensile stress of rocks, it is crucial to adjust the dynamic BD tensile stress using the overload correction. Additionally, the failure modes of BD sample shifts as the loading rate increases. Overall, the numerical results demonstrate that the Voronoi-based DDA is a powerful tool for quantitatively analyzing the overload effect in dynamic Brazilian disc and may provide valuable insights into the dynamic fracture mechanism of rock.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"171 ","pages":"Article 106115"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142974919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A coupled boundary element-finite element solution for pile groups embedded in layered saturated soils under transient loadings 层状饱和土中桩群在瞬态荷载作用下的边界元-有限元耦合解

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2025-02-01 DOI: 10.1016/j.enganabound.2025.106113

Zhi Yong Ai, Yi Xuan Zhang, Yong Zhi Zhao, Wei Tao Ji

{"title":"A coupled boundary element-finite element solution for pile groups embedded in layered saturated soils under transient loadings","authors":"Zhi Yong Ai, Yi Xuan Zhang, Yong Zhi Zhao, Wei Tao Ji","doi":"10.1016/j.enganabound.2025.106113","DOIUrl":"10.1016/j.enganabound.2025.106113","url":null,"abstract":"<div><div>Pile groups in saturated soils frequently encounter transient dynamic loads from earthquakes, waves, and winds. This study uses the coupled boundary element method-finite element method (BEM-FEM) to investigate the transient interaction between pile groups and layered saturated soils. The analytical layer element solution for the stratified saturated soils is used as the kernel function to establish the boundary integral equation of the soils. The pile group is discretized using rod elements on the basis of the finite element theory, and then the dynamic equation of the pile group is constructed. The displacement coordination condition at the pile-soil interface and the boundary condition at the pile cap are introduced to obtain the coupled BEM-FEM equation. The corresponding MATLAB program is developed, whose results are compared with those of numerical simulation by ABAQUS to verify the proposed theory. Further analyses are conducted to discuss the effects of key parameters including the pile-soil stiffness ratio, pile spacing and soil's stratification on the vertical transient response.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"171 ","pages":"Article 106113"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142974941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deep-neural-network-based framework for the accelerating uncertainty quantification of a structural–acoustic fully coupled system in a shallow sea 基于深度神经网络的浅海结构声全耦合系统不确定度加速量化框架

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2025-02-01 DOI: 10.1016/j.enganabound.2024.106112

Leilei Chen , Qingxiang Pei , Ziheng Fei , Zhongbin Zhou , Zhongming Hu

{"title":"Deep-neural-network-based framework for the accelerating uncertainty quantification of a structural–acoustic fully coupled system in a shallow sea","authors":"Leilei Chen , Qingxiang Pei , Ziheng Fei , Zhongbin Zhou , Zhongming Hu","doi":"10.1016/j.enganabound.2024.106112","DOIUrl":"10.1016/j.enganabound.2024.106112","url":null,"abstract":"<div><div>To systematically quantify certain uncertainties within the vibro-acoustic coupling problems, we propose a framework for sampling the acceleration and uncertainty quantification based on a Deep Neural Network (DNN). Coupling the Finite Element Method (FEM) and Boundary Element Method (BEM) with Catmull–Clark subdivision surfaces to generate samples for DNN training and testing. Constructing various DNN surrogate models with different input dimensions to generate abundant samples for uncertainty quantification. Applying a highly structured neural network Stochastic Differential Equation Network (SDE-Net) for uncertainty quantification using these samples. Numerical examples are implemented to verify the validity and effectiveness of the proposed algorithm. The main results are as follows: The numerical results match well with the analytical results, indicating that the FEM–BEM can accurately solve the fully coupled structural–acoustic system and provide high-quality initial samples for the DNN; The statistical metrics of DNN testing results demonstrate extremely high prediction accuracy; The proposed uncertainty quantification framework offers a time advantage and potential for dealing with more complex physical problems.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"171 ","pages":"Article 106112"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142975147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

BEM formulation for simulating heat dissipation in microelectronic packaging with point heat sources 点热源微电子封装散热模拟的边界元计算公式

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2025-02-01 DOI: 10.1016/j.enganabound.2024.106076

V. Gutiérrez-Posada, I. Ubero-Martínez, J. Cifuentes-Rodrǵuez, J. Vallepuga-Espinosa

{"title":"BEM formulation for simulating heat dissipation in microelectronic packaging with point heat sources","authors":"V. Gutiérrez-Posada, I. Ubero-Martínez, J. Cifuentes-Rodrǵuez, J. Vallepuga-Espinosa","doi":"10.1016/j.enganabound.2024.106076","DOIUrl":"10.1016/j.enganabound.2024.106076","url":null,"abstract":"<div><div>This work presents a new and robust formulation for studying the effect of point heat sources on three-dimensional thermomechanical contact problems. The aim of this work is to accurately analyze heat dissipation in microchips with known heat sources. To achieve this, the Boundary Element Method (BEM) has been used to calculate the thermomechanical influence coefficients. The traditional BEM has been extended in the proposed formulation to account for the complex interactions between the microchip and heatsink, which result from the inclusion of point heat sources. This includes the effects of microcontacts, microgaps, and thermal contact resistance. To solve the problem’s inherent non-linearity, a dual iterative solution scheme has been proposed. The formulation is validated by a numerical example and is shown to be capable of accurately capturing traction variations in the contact zone and the influence of heat sources on the contact zone temperature. The formulation is then applied to study the thermomechanical behavior of microelectronic packages, particularly those with low heat dissipation, under the influence of simulated point heat sources.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"171 ","pages":"Article 106076"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142825049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A volume compensation model for multi-resolution moving particle method simulating free-surface flow 多分辨率移动粒子法模拟自由表面流的体积补偿模型

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2025-02-01 DOI: 10.1016/j.enganabound.2024.106080

Xiaoxing Liu , Kai Wang , Shunhua Chen , Shuai Zhang

{"title":"A volume compensation model for multi-resolution moving particle method simulating free-surface flow","authors":"Xiaoxing Liu , Kai Wang , Shunhua Chen , Shuai Zhang","doi":"10.1016/j.enganabound.2024.106080","DOIUrl":"10.1016/j.enganabound.2024.106080","url":null,"abstract":"<div><div>This study presents a novel volume compensation model for multi-resolution moving particle method simulating free surface flows. The volume-compensation model is developed to conserve volume when simulating free surface flow using multi-resolution particles, a topic that has been rarely discussed for multi-resolution simulations in previous literature. The free surface is reconstructed by a linear polynomial, enabling the volume of fluid occupied to be easily calculated. Then particles on the free surface are shifted according to the volume change to conserve volume. In the multi-resolution model, the particle size is capable of adapting in an adaptive manner in accordance with its position. In the refined area, the large particles split into four smaller child particles. Child particles near to the large particles are further merged into middle-size particle to avoid the instability caused by the contact of child particles and parent particles. In order to ensure the accuracy of the calculations, the LSMPS framework is employed. A series of numerical tests were conducted to validate the capability of the developed method using multi-resolution particles.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"171 ","pages":"Article 106080"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142825129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Consistent generalized finite element method: An accurate and robust mesh-based method even in distorted meshes 一致广义有限元法：一种基于网格的方法，即使是在扭曲的网格中，也具有精确和鲁棒性

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2025-02-01 DOI: 10.1016/j.enganabound.2024.106084

Jinwei Ma , Qinglin Duan , Rong Tian , Siqi Shu

{"title":"Consistent generalized finite element method: An accurate and robust mesh-based method even in distorted meshes","authors":"Jinwei Ma , Qinglin Duan , Rong Tian , Siqi Shu","doi":"10.1016/j.enganabound.2024.106084","DOIUrl":"10.1016/j.enganabound.2024.106084","url":null,"abstract":"<div><div>A consistent generalized finite element method (C-GFEM) is proposed, showing excellent accuracy and convergence in distorted quadrilateral and hexahedral meshes. Both displacement approximation and domain integration are taken into consideration regarding the declining performance of the finite element method (FEM) in distorted meshes. In the displacement approximation, extra-degrees of freedom-free and linearly independent enrichments developed in GFEM are employed, which restores the reproducibility of the approximation in distorted meshes. In the domain integration, the idea of correcting nodal derivatives in the framework of the <em>Hu–Washizu</em> three-field variational principle is introduced into GFEM, based on which consistent integration schemes using quadrilateral and hexahedral elements are developed in this work. Furthermore, to consistently enforce the essential boundary condition, additional terms of boundary integral are introduced into the weak form. As a result, the proposed C-GFEM can pass patch tests and keep high accuracy even though the computational mesh is distorted. Its perfect performance in distorted meshes is sufficiently demonstrated by the numerical investigation of several benchmark examples.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"171 ","pages":"Article 106084"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142901665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0