Mechanics and Mechanical Engineering最新文献_第2页

Three-dimensional seismic analysis of concrete gravity dams considering foundation flexibility 考虑地基柔性的混凝土重力坝三维地震分析

Mechanics and Mechanical Engineering Pub Date : 2021-01-01 DOI: 10.2478/mme-2021-0012

M. Messaad, Messoud Bourezane, Mohamed Latrache, A. Berrabah, Djamel Ouzendja

引用次数: 1

Effect of passive coupling on seismic interaction optimization of adjacent structures 被动耦合对相邻结构地震相互作用优化的影响

Mechanics and Mechanical Engineering Pub Date : 2021-01-01 DOI: 10.2478/mme-2021-0014

Khadidja Reteri, A. Megnounif

{"title":"Effect of passive coupling on seismic interaction optimization of adjacent structures","authors":"Khadidja Reteri, A. Megnounif","doi":"10.2478/mme-2021-0014","DOIUrl":"https://doi.org/10.2478/mme-2021-0014","url":null,"abstract":"Abstract During the past few years, several studies have been conducted in various fields of civil engineering in order to design structures that can withstand the forces and deformations that might occur during seismic events. However, more recently, building adjacent structures close to each other and more resistant to earthquakes, provided with coupling systems, has been an issue of major concern. The effects of some parameters, such as the characteristics of adjacent structures and those of the coupling system, on the choice of the separation distance, were investigated using a program that was developed using MATLAB. This article aims to present a study that is intended to determine the parameters characterizing the coupling system. Moreover, the influence of rigidity of the structure was also examined. For this, three examples were investigated: a flexible structure, a rigid structure, and a very rigid structure. The results obtained from the numerical study made it possible to show that knowing the characteristics, number, and arrangements of the coupling systems can be used to find the minimum separation distance between two adjacent buildings.","PeriodicalId":53557,"journal":{"name":"Mechanics and Mechanical Engineering","volume":"25 1","pages":"99 - 110"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43000118","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 use of FEM to evaluate the influence of logarithmic correction parameters of roller generators on the axle box bearing life 用有限元法评估滚柱发电机对数校正参数对轴箱轴承寿命的影响

Mechanics and Mechanical Engineering Pub Date : 2021-01-01 DOI: 10.2478/mme-2021-0008

Agniezka Chudzik, B. Warda

引用次数: 0

Experimental and finite element analysis of slope stability treated by lime milk (case of El Amir Abdelkader embankment) 石灰乳处理边坡稳定性的试验与有限元分析(以El Amir Abdelkader路堤为例)

Mechanics and Mechanical Engineering Pub Date : 2021-01-01 DOI: 10.2478/mme-2021-0011

Zeyneb Belabbaci, A. Berrabah, D. Bouri

引用次数: 1

Ansys code applied to investigate the dynamics of composite sandwich beams Ansys程序在复合材料夹层梁动力学研究中的应用

Mechanics and Mechanical Engineering Pub Date : 2021-01-01 DOI: 10.2478/mme-2021-0009

A. Chudzik

引用次数: 0

Transient response of “Brezina concrete arch dam”–“Reservoir water”–“Rock foundation” system “布雷齐纳混凝土拱坝”-“水库水”-“岩基”体系的瞬态响应

Mechanics and Mechanical Engineering Pub Date : 2021-01-01 DOI: 10.2478/mme-2021-0015

Wahiba Moussi, A. Berrabah, A. Bekkouche, Mohamed Belharizi

{"title":"Transient response of “Brezina concrete arch dam”–“Reservoir water”–“Rock foundation” system","authors":"Wahiba Moussi, A. Berrabah, A. Bekkouche, Mohamed Belharizi","doi":"10.2478/mme-2021-0015","DOIUrl":"https://doi.org/10.2478/mme-2021-0015","url":null,"abstract":"Abstract In this paper, transient responses of the Brezina concrete arch dam, located in the west of Algeria, are determined using the finite elements commercial package, Ansys. A 3D model has been created to study the rock–fluid–structure interaction phenomenon. The foundation rock is modeled as a mass rock using solid finite elements, and the reservoir water is modeled using fluid finite element for the 3D model; the length and width of the foundation rock and water reservoir, along the global X and Y axes, are taken to be 150 m and 300 m, respectively, while its depth (or height), along the Z direction, is taken to be 100 m (the total height of the model is thus 160 m considering that the reservoir water height is taken to be 50 m). Coupling equations available in the Ansys code library are used to represent the dam–water and dam–foundation interfaces. It is found that the role of the reservoir water is mixed. In some cases, its presence is like a damper, which means it decreases the range of displacement or stresses, whereas in other cases, it increases or has a negligible effect on these quantities. A notable finding is the magnitude of the calculated stresses, which stands at a very low level, either with or without water. An in-depth review of the literature reveals that the study carried out in this research encompasses several elements of originality, as only very few similar works have been undertaken.","PeriodicalId":53557,"journal":{"name":"Mechanics and Mechanical Engineering","volume":"25 1","pages":"111 - 120"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43912244","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: 1

Numerical analysis based on finite element method of active vibration control of a sandwich plate using piezoelectric patches 基于有限元法的压电片夹层板振动主动控制数值分析

Mechanics and Mechanical Engineering Pub Date : 2020-09-01 DOI: 10.2478/mme-2020-0005

Hanane Serhane, K. Bendine, F. B. Boukhoulda, A. Lousdad

引用次数: 2

Self-Maintenance Orbits Using The perturbations Due to Air Drag and Due to Earth's Oblateness 利用空气阻力和地球倾角引起的扰动的自维护轨道

Mechanics and Mechanical Engineering Pub Date : 2020-09-01 DOI: 10.2478/mme-2020-0002

M. R. Amin

引用次数: 0

Energy analysis of a real suction-pressure unit 一个实吸压力单元的能量分析

Mechanics and Mechanical Engineering Pub Date : 2020-09-01 DOI: 10.2478/mme-2020-0001

A. Myszkowski, R. Staniek, Michał Zielinski

引用次数: 0

Experimental Determination of the Surface Geometrical Structure Parameters and Tool Wear During Turning the Polymer Concrete 聚合物混凝土车削过程中表面几何结构参数和刀具磨损的实验测定

Mechanics and Mechanical Engineering Pub Date : 2020-09-01 DOI: 10.2478/mme-2020-0007

N. Kepczak, R. Rosik

{"title":"Experimental Determination of the Surface Geometrical Structure Parameters and Tool Wear During Turning the Polymer Concrete","authors":"N. Kepczak, R. Rosik","doi":"10.2478/mme-2020-0007","DOIUrl":"https://doi.org/10.2478/mme-2020-0007","url":null,"abstract":"Abstract The paper presents the results of experimental determination of the Surface Geometrical Structure (SGS) parameters and tool wear during turning the polymer concrete. Until now, all literature reports have shown that the smoothness and roughness of the mineral cast surface was obtained directly from the mold. However, new applications of polymer concrete, even for some parts of the machine tools, forced the producers to carry out machining, which would improve the parameters of the surface layer. The topic of machining ceramic-based composite materials is a new chapter in the field of machining, which has not been sufficiently researched so far. The article describes the process of experimental determination of dependence of surface layer and tools wear parameters from cutting parameters during longitudinal turning of polymer concrete. The turning was carried out using plates made of a cubic boron nitride (CBN). After machining, the surface roughness and the maximum width of the flank wear were measured. On this basis, the mathematical model of the surface layer and tools wear parameters versus cutting parameters were defined. The authors also attempted to explain the phenomena occurring in the machining zone using variable cutting parameters. Microscopic pictures of CBN plates after machining were also performed. After the study, the final conclusions about the machining of mineral cast material were formulated.","PeriodicalId":53557,"journal":{"name":"Mechanics and Mechanical Engineering","volume":"24 1","pages":"1 - 6"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49296132","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