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

Linear energy-stable Runge–Kutta relaxation schemes for the Bi-flux diffusion model 双通量扩散模型的线性能量稳定龙格-库塔弛豫格式

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2025-02-01 DOI: 10.1016/j.enganabound.2024.106087

Jiayue Xu , Cong Xie , Maosheng Jiang

引用次数: 0

A peridynamic method for creep and stress relaxation incorporating a novel fractional viscoelastic model 结合新型分数黏弹性模型的蠕变和应力松弛的周动力方法

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2025-02-01 DOI: 10.1016/j.enganabound.2024.106104

Guosheng Wang , Wenwen He , Dechun Lu , Zhiqiang Song , Xiuli Du

{"title":"A peridynamic method for creep and stress relaxation incorporating a novel fractional viscoelastic model","authors":"Guosheng Wang , Wenwen He , Dechun Lu , Zhiqiang Song , Xiuli Du","doi":"10.1016/j.enganabound.2024.106104","DOIUrl":"10.1016/j.enganabound.2024.106104","url":null,"abstract":"<div><div>A fractional viscoelastic kernel function is proposed to describe the modulus evolution during the creep and stress relaxation behavior of quasi-brittle materials. A unified fractional viscoelastic model for creep and stress relaxation is further developed, which has the advantages of few parameters and high accuracy. The model can be degenerated into the basic viscoelastic models under different values of fractional order. The relationship between the force state in non-ordinary state-based peridynamics and the stress tensor in the continuum mechanics constitutive model is established. The developed fractional viscoelastic model is then integrated into the peridynamic framework to create a unified creep and stress relaxation peridynamic method. The calibration method of the model parameters is also determined through the equivalence of the peridynamics and the continuum mechanics, and the influence rules of parameters on the viscoelastic behavior of materials are discussed. The effectiveness of the proposed peridynamic method is verified by numerical simulations of a plate, bar, slate, and beam. The proposed method can accurately describe the deformation process from continuous to discontinuous in creep and stress relaxation. This study provides a valuable numerical tool for simulating structural damage caused by creep and stress relaxation in engineering structures during long-term operation.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"171 ","pages":"Article 106104"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929261","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

Electromagnetic-thermal coupling simulation in high temperature superconducting bulk by peridynamic differential operator 高温超导体中电磁-热耦合的周动力微分算子模拟

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2025-02-01 DOI: 10.1016/j.enganabound.2024.106097

Shouhong Shan , Huadong Yong , Youhe Zhou

{"title":"Electromagnetic-thermal coupling simulation in high temperature superconducting bulk by peridynamic differential operator","authors":"Shouhong Shan , Huadong Yong , Youhe Zhou","doi":"10.1016/j.enganabound.2024.106097","DOIUrl":"10.1016/j.enganabound.2024.106097","url":null,"abstract":"<div><div>The high temperature superconducting (HTS) bulk can operate in the liquid nitrogen temperature. A useful model describing superconductivity for engineering applications links electric field and current density, namely as E-J power law. Since the exponent of the E-J power law is usually set as 20∼50, the distribution of current density changes dramatically between the penetrated and unpenetrated regions, which brings a challenge to the numerical accuracy and convergence of the calculation. Furthermore, in order to simulate the heat transfer behavior between HTS bulk and its ambient environment during operation, the nonlinear flux boundary condition of temperature is employed. The peridynamic differential operator (PDDO) is a powerful tool to solve the mathematical model with PDEs. Utilizing the theory of the PDDO, the spatial partial derivative in the PDEs is converted into a corresponding non-local form. To verify our model, a comparison between the numerical results solved by the PDDO and finite element method is carried out. Finally, the effects of the global and local non-uniformity of critical current and thermal perturbation on the electromagnetic and thermal behaviors of the HTS bulk in the multi-pulsed field magnetization process are simulated.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"171 ","pages":"Article 106097"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929265","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

Nonlocal modelling of temperature-dependent electrochemical corrosion using peridynamic operator method 基于周动力学算子的非局部温度依赖性电化学腐蚀建模

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2025-02-01 DOI: 10.1016/j.enganabound.2024.106096

Dewei He , Zhiyuan Li , Dan Huang , Ding Chen , Xuehao Yao

{"title":"Nonlocal modelling of temperature-dependent electrochemical corrosion using peridynamic operator method","authors":"Dewei He , Zhiyuan Li , Dan Huang , Ding Chen , Xuehao Yao","doi":"10.1016/j.enganabound.2024.106096","DOIUrl":"10.1016/j.enganabound.2024.106096","url":null,"abstract":"<div><div>A nonlocal nonlinear temperature-dependent electrochemical corrosion model is proposed in this paper. The corrosion process is described by the concentration of ions controlled by diffusion and electromigration, and the influence of temperature is taken into consideration as well. The weak form of governing equations is obtained by using the weighted residual method which is then reformulated in their nonlocal form by using the peridynamic operator method. Numerical examples of galvanic corrosion and pitting corrosion illustrate that the model is capable of determining the corrosion rate quantitatively and capturing the moving interface of corrosion naturally. The influence of temperature and inert inclusions on diffusivity and electrical conductivity are discussed as well, leveraging the advantages of peridynamics in directly solving discontinuous problems. The 2D and 3D simulation results both indicate that an elevated temperature accelerates corrosion, and the non-uniform temperature distributions lead to the formation of different pitting corrosion morphologies.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"171 ","pages":"Article 106096"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142902099","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

Dual distance transformations for evaluating domain integrals in the boundary integral equation of transient heat conduction 计算瞬态热传导边界积分方程域积分的对偶距离变换

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2025-02-01 DOI: 10.1016/j.enganabound.2024.106103

Zhengxu Tan, Yunqiao Dong, Xingwang Bai

{"title":"Dual distance transformations for evaluating domain integrals in the boundary integral equation of transient heat conduction","authors":"Zhengxu Tan, Yunqiao Dong, Xingwang Bai","doi":"10.1016/j.enganabound.2024.106103","DOIUrl":"10.1016/j.enganabound.2024.106103","url":null,"abstract":"<div><div>Accurate computation of domain integrals is indeed crucial for effective boundary element analysis of transient heat conduction problems. The progressive reduction of the time step can cause the time-dependent kernel within the integral to oscillate rapidly and exhibit near-singularity. Additionally, integration over the sub-triangular element with a large angle and large side length ratio will result in the circumferential near-singularity. The traditional distance transformation technique, while effective, is limited to the nearly singular integrals and addresses the near-singularity in only one direction. To enhance the accuracy of the domain integral computations, a dual distance transformations method is introduced. The (<em>α, β</em>) coordinate transformation is initially employed to separate the near-singularity. An appropriate distance transformation is then proposed to eliminate the near-singularity associated with the variable <em>α</em>. Furthermore, the circumferential near-singularity induced by the sub-triangle with poor shape is analyzed. Considering the integral form related to the variable <em>β</em>, another new distance transformation is finally established to mitigate the effect of the element shape. With the presented dual distance transformations method, the domain integrals can be accurately computed for different time steps and source point locations. The accuracy and efficiency of the proposed method are effectively proven through several numerical examples.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"171 ","pages":"Article 106103"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929262","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

Properties optimisation of nanostructures via machine learning: Progress and perspective 基于机器学习的纳米结构性能优化：进展与展望

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2025-02-01 DOI: 10.1016/j.enganabound.2024.106063

Nurul Akmal Che Lah

{"title":"Properties optimisation of nanostructures via machine learning: Progress and perspective","authors":"Nurul Akmal Che Lah","doi":"10.1016/j.enganabound.2024.106063","DOIUrl":"10.1016/j.enganabound.2024.106063","url":null,"abstract":"<div><div>Nanostructures play a vast role in the current Internet of NanoThings (IoNT) era due to remarkable properties and features that precisely impart their desired application functions in catalysis, energy and other fields. The exploration in understanding their minute features caused by the flexibility of compositional and complex atomic arrangement from the synthesis reaction widely opens for the in-depth discovery of their search space such as particle size, morphology and structures that controlled the characteristics. A wide range of possible compositions and various lattice atomic arrangements combined with small particle size distribution and large surface area create grand challenges to copy/differentiate their corresponding specific properties. Thus, the employment of machine learning (ML)-based strategies using the closed-loop experimental data from the nanostructure synthesis to help navigate and optimise for the large classes of data attributes related to the size, morphology and other properties from the trained model are reviewed. The data attributes are assisted by discussions of the selected case studies from the recent literature that highlight different condition nanostructures. The review concludes with a discussion of perspectives on the major challenges in the implementation of ML data-driven design in the field of nanostructure synthesis.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"171 ","pages":"Article 106063"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793489","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 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