发布求助
文献互助 智能选刊 最新文献

Computer Assisted Mechanics and Engineering Sciences最新文献

筛选
英文 中文
Maximisation of buckling resistance in structural members made of circular hollow sections 最大限度地抗屈曲结构构件的圆形空心截面
Computer Assisted Mechanics and Engineering Sciences Pub Date : 2020-05-27 DOI: 10.24423/CAMES.283
R. Walentynski, M. Siwek
{"title":"Maximisation of buckling resistance in structural members made of circular hollow sections","authors":"R. Walentynski, M. Siwek","doi":"10.24423/CAMES.283","DOIUrl":"https://doi.org/10.24423/CAMES.283","url":null,"abstract":"This paper deals with the optimisation of the joint for thin-walled compressed elements that have circular hollow sections (CHS). A steel pipe is studied that has 3 m length, 52.3 mm diameter and 3 mm thick wall. Few examples of joint shapes are proposed. The first of them uses two extra plates that are perpendicular to the circular section. They are both in the shape of an isosceles triangle with 100 mm long and 3 mm thick sides. The second option uses four of those triangle plates. The next step is to provide perforation only in the joint area as well as along the whole element. The last option is to use a short smaller pipe inside the base pipe. Results have been compared to each other and conclusions are summarised.","PeriodicalId":448014,"journal":{"name":"Computer Assisted Mechanics and Engineering Sciences","volume":"45 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127991362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Size and Shape Design Optimization of Truss Structures Using the Jaya Algorithm 基于Jaya算法的桁架结构尺寸和形状优化设计
Computer Assisted Mechanics and Engineering Sciences Pub Date : 2020-05-27 DOI: 10.24423/CAMES.282
M. Grzywiński
{"title":"Size and Shape Design Optimization of Truss Structures Using the Jaya Algorithm","authors":"M. Grzywiński","doi":"10.24423/CAMES.282","DOIUrl":"https://doi.org/10.24423/CAMES.282","url":null,"abstract":"The metaheuristic algorithm is proposed to solve the weight minimization problem of truss structures, considering the shape and sizing design variables. Design variables are discrete and/or continuous. The design of truss structures is optimized by an efficient optimization algorithm called Jaya. The main feature of Jaya is that it does not require setting algorithm-specific parameters. The algorithm has a very simple formulation in which the basic idea is to approach the best solution and escape from the worst solution [6]. Analyses of structures are performed by a finite element code in MATLAB. The effectiveness of the Jaya algorithm is demonstrated using two benchmark examples: planar truss 18-bar and spatial truss 39-bar, and compared with results in references.","PeriodicalId":448014,"journal":{"name":"Computer Assisted Mechanics and Engineering Sciences","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132998131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Implementation of Numerical Integration to High-Order Elements on the GPUs gpu上高阶元数值积分的实现
Computer Assisted Mechanics and Engineering Sciences Pub Date : 2020-04-02 DOI: 10.24423/CAMES.264
Filip Kruzel, K. Banas, M. Nytko
{"title":"Implementation of Numerical Integration to High-Order Elements on the GPUs","authors":"Filip Kruzel, K. Banas, M. Nytko","doi":"10.24423/CAMES.264","DOIUrl":"https://doi.org/10.24423/CAMES.264","url":null,"abstract":"This article presents ways to implement a resource-consuming algorithm on hardware with a limited amount of memory, which is the GPU. Numerical integration for higher-order finite element approximation was chosen as an example algorithm. To perform computational tests, we use a non-linear geometric element and solve the convection-diffusion-reaction problem. For calculations, a Tesla K20m graphics card based on Kepler architecture and Radeon r9 280X based on Tahiti XT architecture were used. The results of computational experiments were compared with the theoretical performance of both GPUs, which allowed an assessment of actual performance. Our research gives suggestions for choosing the optimal design of algorithms as well as the right hardware for such a resource-demanding task.","PeriodicalId":448014,"journal":{"name":"Computer Assisted Mechanics and Engineering Sciences","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123679636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improvement and unification of input images for photogrammetric reconstruction 摄影测量重建中输入图像的改进与统一
Computer Assisted Mechanics and Engineering Sciences Pub Date : 2020-01-09 DOI: 10.24423/CAMES.262
K. Skabek, Piotr Łabędź, P. Ozimek
{"title":"Improvement and unification of input images for photogrammetric reconstruction","authors":"K. Skabek, Piotr Łabędź, P. Ozimek","doi":"10.24423/CAMES.262","DOIUrl":"https://doi.org/10.24423/CAMES.262","url":null,"abstract":"In this paper, we compare techniques for 3D reconstruction from images. We focus on the pre-processing step of reconstruction: improving the input images. Several image processing algorithms are selected and tested.The main goal is to improve the quality of the resulting 3D reconstruction. We use two approaches to analyze the 3D model fitting: comparing them to the orthophotomap and measuring the position among 3D reconstructions.","PeriodicalId":448014,"journal":{"name":"Computer Assisted Mechanics and Engineering Sciences","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133423596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Similarity detection based on document matrix model and edit distance algorithm 基于文档矩阵模型和编辑距离算法的相似度检测
Computer Assisted Mechanics and Engineering Sciences Pub Date : 2019-12-31 DOI: 10.24423/CAMES.277
Artur Niewiarowski
{"title":"Similarity detection based on document matrix model and edit distance algorithm","authors":"Artur Niewiarowski","doi":"10.24423/CAMES.277","DOIUrl":"https://doi.org/10.24423/CAMES.277","url":null,"abstract":"This paper presents a new algorithm with an objective of analyzing the similarity measure between two text documents. Specifically, the main idea of the implemented method is based on the structure of the so-called “edit distance matrix” (similarity matrix). Elements of this matrix are filled with a formula based on Levenshtein distances between sequences of sentences. The Levenshtein distance algorithm (LDA) is used as a replacement for various implementations of stemming or lemmatization methods. Additionally, the proposed algorithm is fast, precise, and may be implemented for analyzing very large documents (e.g., books, diploma works, newspapers, etc.). Moreover, it seems to be versatile for the most common European languages such as Polish, English, German, French and Russian. The presented tool is intended for all employees and students of the university to detect the level of similarity regarding analyzed documents. Results obtained in the paper were confirmed in the tests shown in the article.","PeriodicalId":448014,"journal":{"name":"Computer Assisted Mechanics and Engineering Sciences","volume":"2014 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133883424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reconstruction of selected operating parameters of a thermoelectric device 热电装置选定工作参数的重建
Computer Assisted Mechanics and Engineering Sciences Pub Date : 2019-10-03 DOI: 10.24423/CAMES.251
I. Nowak, R. Buchalik, G. Nowak
{"title":"Reconstruction of selected operating parameters of a thermoelectric device","authors":"I. Nowak, R. Buchalik, G. Nowak","doi":"10.24423/CAMES.251","DOIUrl":"https://doi.org/10.24423/CAMES.251","url":null,"abstract":"This paper presents preliminary research aimed at recognizing some selected operating parameters of a thermoelectric device. The inverse problem was formulated, for the solution of which a population heuristics (Ant Colony Optimization) was used. In the inverse task, selected parameters important for the cell operation were reconstructed based on relatively easy to obtain temperature measurements within heat exchangers and appropriate measurements of electrical quantities. The heuristics used, reconstructs the estimated variables, minimizing the differences between data from the measurements and data calculated in the model for their determined values. Since inverse tasks, as ill-conditioned problems, are characterized by high sensitivity to measurement errors, the tests began with calculations based on numerically generated data in order to fully maintain control of their disturbances.","PeriodicalId":448014,"journal":{"name":"Computer Assisted Mechanics and Engineering Sciences","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125523985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In Memoriam - Professor Erwin Stein 纪念欧文·斯坦教授
Computer Assisted Mechanics and Engineering Sciences Pub Date : 2019-08-26 DOI: 10.24423/CAMES.26.1.6
M. Kuczma
{"title":"In Memoriam - Professor Erwin Stein","authors":"M. Kuczma","doi":"10.24423/CAMES.26.1.6","DOIUrl":"https://doi.org/10.24423/CAMES.26.1.6","url":null,"abstract":"Erwin Stein passed away on 19th December 2018 at the age of 87, a few days after he had lostconsciousness when working at his desk. He was a mentor and a dear friend to many of us in thecommunity of computational mechanics.","PeriodicalId":448014,"journal":{"name":"Computer Assisted Mechanics and Engineering Sciences","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116776482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Postprocessing and reliability evaluation of the one-dimensional numerical simulation results in mechanical problems 力学问题一维数值模拟结果的后处理与可靠性评价
Computer Assisted Mechanics and Engineering Sciences Pub Date : 2019-02-17 DOI: 10.24423/CAMES.228
J. Wojtas
{"title":"Postprocessing and reliability evaluation of the one-dimensional numerical simulation results in mechanical problems","authors":"J. Wojtas","doi":"10.24423/CAMES.228","DOIUrl":"https://doi.org/10.24423/CAMES.228","url":null,"abstract":"The work addresses extended formulation of a new approach proposed to control numerical data error [9, 10]. It includes: development of postprocessing techniques for approximation of data given in a discrete form and estimation (evaluation) of this data a posteriori error and  the reliability index. Theoretical consideration and numerical analysis are based on the Adaptive Meshless Finite Difference (MFDM) approach.","PeriodicalId":448014,"journal":{"name":"Computer Assisted Mechanics and Engineering Sciences","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114202136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The discontinuous Galerkin method with higher degree finite difference compatibility conditions and arbitrary local and global basis functions 具有高次有限差分相容条件和任意局部和全局基函数的不连续伽辽金方法
Computer Assisted Mechanics and Engineering Sciences Pub Date : 2017-07-21 DOI: 10.6084/M9.FIGSHARE.1595250.V2
J. Jaśkowiec
{"title":"The discontinuous Galerkin method with higher degree finite difference compatibility conditions and arbitrary local and global basis functions","authors":"J. Jaśkowiec","doi":"10.6084/M9.FIGSHARE.1595250.V2","DOIUrl":"https://doi.org/10.6084/M9.FIGSHARE.1595250.V2","url":null,"abstract":"This paper focuses on the discontinuous Galerkin (DG) method in which the compatibility condition on the mesh skeleton and Dirichlet boundary condition on the outer boundary are enforced with the help of one-dimensional finite difference (FD) rules, while in the standard approach those conditions are satisfied by the penalty constraints. The FD rules can be of arbitrary degree and in this paper the rules are applied up to fourth degree. It is shown that the method presented in this paper gives better results in comparison to the standard version of the DG method. The method is based on discontinuous approximation, which means that it can be constructed using arbitrary local basis functions in each finite element. It is quite easy to incorporate some global basis functions in the approximation field and this is also shown in the paper. The paper is illustrated with a couple of two-dimensional examples.","PeriodicalId":448014,"journal":{"name":"Computer Assisted Mechanics and Engineering Sciences","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121110711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
The hp nonconforming mesh refinement in discontinuous Galerkin finite element method based on Zienkiewicz-Zhu error estimation 基于Zienkiewicz-Zhu误差估计的非连续Galerkin有限元法hp非协调网格细化
Computer Assisted Mechanics and Engineering Sciences Pub Date : 2016-05-16 DOI: 10.6084/M9.FIGSHARE.1597435.V2
J. Jaśkowiec
{"title":"The hp nonconforming mesh refinement in discontinuous Galerkin finite element method based on Zienkiewicz-Zhu error estimation","authors":"J. Jaśkowiec","doi":"10.6084/M9.FIGSHARE.1597435.V2","DOIUrl":"https://doi.org/10.6084/M9.FIGSHARE.1597435.V2","url":null,"abstract":"This paper deals with hp-type adaptation in the discontinuous Galerkin (DG) method. The DG method is formulated in this paper with a non-zero mesh skeleton width, which leads to a version of the method called in this paper the interface discontinuous Galerkin (IDG) method. In this formulation, the mesh skeleton has a finite volume and special finite elements are used for discretization. The skeleton spatial calculations are performed using the finite difference or mid-values formulas which are based on the shape functions of the neighbouring finite elements. The Dirichlet boundary conditions are applied using a non-zero width of the material between the outer boundary and a finite element aligned with the boundary. Next, the paper discusses the mesh refinement of hp type. In the IDG method, the mesh does not have to be conforming. The Zienkiewicz-Zhu (ZZ) error indicator is adapted in the IDG method for the purpose of mesh refinement. The paper is illustrated with two-dimensional examples, in which the mesh refinement for an elliptic problem is performed.","PeriodicalId":448014,"journal":{"name":"Computer Assisted Mechanics and Engineering Sciences","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133329571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信