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International Journal of Computational Methods最新文献

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A Boundary Node Method for Solving Interior and Exterior Acoustic Problems 解决室内外声学问题的边界节点法
IF 1.7 4区 工程技术
International Journal of Computational Methods Pub Date : 2024-02-27 DOI: 10.1142/s021987622350041x
Mohammed Afzal Rafiq, I. R. Praveen Krishna, C. O. Arun
{"title":"A Boundary Node Method for Solving Interior and Exterior Acoustic Problems","authors":"Mohammed Afzal Rafiq, I. R. Praveen Krishna, C. O. Arun","doi":"10.1142/s021987622350041x","DOIUrl":"https://doi.org/10.1142/s021987622350041x","url":null,"abstract":"<p>The Boundary Node Method (BNM) is a meshfree scheme for solving Boundary Integral Equations (BIE). BNM simplifies the problem at two levels. Primarily, as BNM aims to solve the integral form of the governing equation, is reduced dimensionality of the problem by one order. Additionally, the mesh-free scheme eliminates the need for meshing, proving particularly beneficial for problems involving complex geometries. In this study, BNM is formulated using Element Free Galerkin (EFG) scheme to solve interior and exterior problems in acoustics. A 3-dimensional linear basis is used to construct moving least square shape functions. This eliminates the need to define additional local or parametric coordinate systems, making the method easily applicable to any arbitrary geometry. To illustrate the capabilities of the proposed method, four example problems are solved. An open pipe at resonance and a simple expansion muffler are analyzed to validate BNM’s performance in solving interior problems. Radiation from a pulsating sphere and radiation from a sphere with harmonic velocity excitation are analyzed as examples of exterior problems. Results from all four sample problems indicate that the BNM scheme proposed for solving acoustic problems is accurate and robust.</p>","PeriodicalId":54968,"journal":{"name":"International Journal of Computational Methods","volume":"25 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140043942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
An adaptive PML finite volume algorithm for the scattering by periodic gratings 周期性光栅散射的自适应 PML 有限体积算法
IF 1.7 4区 工程技术
International Journal of Computational Methods Pub Date : 2024-01-05 DOI: 10.1142/s0219876224500014
Zhoufeng Wang, Yao Cheng
{"title":"An adaptive PML finite volume algorithm for the scattering by periodic gratings","authors":"Zhoufeng Wang, Yao Cheng","doi":"10.1142/s0219876224500014","DOIUrl":"https://doi.org/10.1142/s0219876224500014","url":null,"abstract":"","PeriodicalId":54968,"journal":{"name":"International Journal of Computational Methods","volume":"28 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139449322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
New numerical iteration schemes based on perturbation iteration algorithms 基于扰动迭代算法的新数值迭代方案
IF 1.7 4区 工程技术
International Journal of Computational Methods Pub Date : 2023-11-24 DOI: 10.1142/s0219876223500408
Mehmet Pakdemirli
{"title":"New numerical iteration schemes based on perturbation iteration algorithms","authors":"Mehmet Pakdemirli","doi":"10.1142/s0219876223500408","DOIUrl":"https://doi.org/10.1142/s0219876223500408","url":null,"abstract":"","PeriodicalId":54968,"journal":{"name":"International Journal of Computational Methods","volume":"20 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139238633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Identification of vivo Material Parameters of Arterial Wall based on Improved Niching Genetic Algorithm and Neural Networks 基于改进型遗传算法和神经网络的动脉壁活体材料参数识别
IF 1.7 4区 工程技术
International Journal of Computational Methods Pub Date : 2023-11-17 DOI: 10.1142/s0219876223500391
Luming Zhao, Jianbing Sang, Lifang Sun, Fengtao Li, Huaxin Xiang
{"title":"Identification of vivo Material Parameters of Arterial Wall based on Improved Niching Genetic Algorithm and Neural Networks","authors":"Luming Zhao, Jianbing Sang, Lifang Sun, Fengtao Li, Huaxin Xiang","doi":"10.1142/s0219876223500391","DOIUrl":"https://doi.org/10.1142/s0219876223500391","url":null,"abstract":"","PeriodicalId":54968,"journal":{"name":"International Journal of Computational Methods","volume":"13 1-2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139263665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Adaptive IQ and IMQ-RBFs for Solving Initial Value Problems: Adams–Bashforth and Adams–Moulton Methods 用于解决初值问题的自适应 IQ 和 IMQ-RBF：亚当斯-巴什福斯法和亚当斯-莫尔顿法
IF 1.7 4区 工程技术
International Journal of Computational Methods Pub Date : 2023-11-10 DOI: 10.1142/s0219876223500329
Samala Rathan, Deepit Shah, T. Hemanth Kumar, K. Sandeep Charan
{"title":"Adaptive IQ and IMQ-RBFs for Solving Initial Value Problems: Adams–Bashforth and Adams–Moulton Methods","authors":"Samala Rathan, Deepit Shah, T. Hemanth Kumar, K. Sandeep Charan","doi":"10.1142/s0219876223500329","DOIUrl":"https://doi.org/10.1142/s0219876223500329","url":null,"abstract":"<p>In this paper, our objective is primarily to use adaptive inverse-quadratic (IQ) and inverse-multi-quadratic (IMQ) radial basis function (RBF) interpolation techniques to develop third and fourth-order methods such as Adams–Bashforth (AB) and Adams–Moulton (AM) methods. By utilizing a free parameter involved in the RBF, the local convergence of the numerical solution is enhanced by making the local truncation error vanish. Consistency and stability analysis is presented along with some numerical results to back up our assertions. The accuracy and rate of convergence of each proposed technique are equal to or better than the original AB and AM methods by eliminating the local truncation error thus in that sense, the proposed adaptive methods are optimal. We conclude that both IQ and IMQ-RBF methods yield an improved order of convergence than classical methods, while the superiority of one method depends on the method and the problem considered.</p>","PeriodicalId":54968,"journal":{"name":"International Journal of Computational Methods","volume":"87 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140045445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Toward Development of a Plate Discrete Element Method: Geometry and Kinematics 平板离散元法的发展:几何与运动学
4区 工程技术
International Journal of Computational Methods Pub Date : 2023-11-10 DOI: 10.1142/s0219876223420021
Jian Chen, Dominik Krengel, Hans-Georg Matuttis
{"title":"Toward Development of a Plate Discrete Element Method: Geometry and Kinematics","authors":"Jian Chen, Dominik Krengel, Hans-Georg Matuttis","doi":"10.1142/s0219876223420021","DOIUrl":"https://doi.org/10.1142/s0219876223420021","url":null,"abstract":"","PeriodicalId":54968,"journal":{"name":"International Journal of Computational Methods","volume":" October","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135186141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Geometrically Non-Linear Analysis of Beam-Reinforced Thin Plates Using the Methodology of Groebner Bases 基于Groebner基础的梁加筋薄板几何非线性分析
4区 工程技术
International Journal of Computational Methods Pub Date : 2023-11-07 DOI: 10.1142/s021987622342001x
Y. Jane Liu, John Peddieson, Stephen Idem
{"title":"Geometrically Non-Linear Analysis of Beam-Reinforced Thin Plates Using the Methodology of Groebner Bases","authors":"Y. Jane Liu, John Peddieson, Stephen Idem","doi":"10.1142/s021987622342001x","DOIUrl":"https://doi.org/10.1142/s021987622342001x","url":null,"abstract":"","PeriodicalId":54968,"journal":{"name":"International Journal of Computational Methods","volume":"112 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135541074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
An ANN-BCMO Approach for Material Distribution Optimization of Bi-directional Functionally Graded Nanocomposite Plates with Geometrically Nonlinear Behaviors 几何非线性双向功能梯度纳米复合材料板材料分布优化的ANN-BCMO方法
4区 工程技术
International Journal of Computational Methods Pub Date : 2023-11-07 DOI: 10.1142/s0219876223410104
Paowpat Pensupa, Toan Minh Le, Jaroon Rungamornrat
{"title":"An ANN-BCMO Approach for Material Distribution Optimization of Bi-directional Functionally Graded Nanocomposite Plates with Geometrically Nonlinear Behaviors","authors":"Paowpat Pensupa, Toan Minh Le, Jaroon Rungamornrat","doi":"10.1142/s0219876223410104","DOIUrl":"https://doi.org/10.1142/s0219876223410104","url":null,"abstract":"","PeriodicalId":54968,"journal":{"name":"International Journal of Computational Methods","volume":"113 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135541293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Smoothed Point Interpolation Method for the Timoshenko Beam Timoshenko光束的平滑点插值方法
4区 工程技术
International Journal of Computational Methods Pub Date : 2023-11-07 DOI: 10.1142/s021987622350038x
Felipe Pereira dos Santos, Enzo Marino, Lapo Gori
{"title":"A Smoothed Point Interpolation Method for the Timoshenko Beam","authors":"Felipe Pereira dos Santos, Enzo Marino, Lapo Gori","doi":"10.1142/s021987622350038x","DOIUrl":"https://doi.org/10.1142/s021987622350038x","url":null,"abstract":"","PeriodicalId":54968,"journal":{"name":"International Journal of Computational Methods","volume":"113 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135541066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 new approximation method for multi-pantograph type delay differential equations using Boubaker polynomials 用Boubaker多项式逼近多受电弓型延迟微分方程的新方法
4区 工程技术
International Journal of Computational Methods Pub Date : 2023-11-03 DOI: 10.1142/s0219876223500342
Suayip Yuzbasi, Beyza Cetin
{"title":"A new approximation method for multi-pantograph type delay differential equations using Boubaker polynomials","authors":"Suayip Yuzbasi, Beyza Cetin","doi":"10.1142/s0219876223500342","DOIUrl":"https://doi.org/10.1142/s0219876223500342","url":null,"abstract":"","PeriodicalId":54968,"journal":{"name":"International Journal of Computational Methods","volume":"12 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135868006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
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