Engineering Review最新文献_第2页

Torque method investigation of wolfrom gear trains 轮系转矩法研究

IF 0.4

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.2099

D. Karaivanov, Serik Bekzhanov, Bakhitbek Saktaganov

引用次数: 1

Large displacement analysis of laminated beam-type structures 叠合梁型结构的大位移分析

IF 0.4

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.2184

Igor Pešić, G. Turkalj

引用次数: 0

GWO-super-twisting integral sliding mode control of 60 KW PV system based on interleaved boost converter 基于交错升压变换器的60kw光伏系统gwo -超扭转积分滑模控制

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.2167

Daia Eddine Oussama Mohamed Cherif, Ali Chebabhi, Abdelhalim Kessal, Mohammed Karim Fellah, Mohamed-Fouad Benkhoris

引用次数: 0

Derivation matrix in mechanics – data approach 力学中的推导矩阵。数据法

IF 0.4

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.1892

I. Kožar, M. Plovanić, T. Sulovsky

{"title":"Derivation matrix in mechanics – data approach","authors":"I. Kožar, M. Plovanić, T. Sulovsky","doi":"10.30765/er.1892","DOIUrl":"https://doi.org/10.30765/er.1892","url":null,"abstract":"Existence of data allows use of solution methods for differential equations that would otherwise be inapplicable. The solution process for this is formalized by using derivation matrices that reduce the time necessary for derivation and solving of differential equations. Derivation matrices are formulated by applying numerical methods in matrix notation, like finite difference schemes. In this work, a novel formulation is developed based on Lagrange polynomials with special care taken at boundary points in order to persevere a uniform precision. The main advantage of the approach is straightforward formulation, clear engineering insight into the process and (almost) arbitrary precision through choice of the interpolation order. The result of this procedure is the derivation matrix of the dimension [n×n], where 'n' is the number of data points. The resulting matrix is singular (of rank 'n-1') until boundary/initial conditions are introduced. However, that does not prevent the user to successfully differentiate its unknown function represented with the recorded data points. Derivation matrix approach is easily applicable to a wide range of engineering problems. This methodology could be extended to dynamic systems with multiple degrees of freedom and adapted when velocities or accelerations are recorded instead of displacements.","PeriodicalId":44022,"journal":{"name":"Engineering Review","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69598267","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

Comparative analysis of parameters affecting micro-forming process 影响微成形工艺参数的对比分析

IF 0.4

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.2163

Janhavi Saklecha, S. Pachpore, Omkar Kulkarni, G. Kakandikar

引用次数: 0

Transient motion of an industrial mixer with elastically suspended work head 弹性悬挂工作头的工业混合器的瞬态运动

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.2301

Venelin Jivkov, Rosen Mitrev

引用次数: 0

Contribution of the two rectifiers reconfiguration to fault tolerance connected to the grid network to feed the GMAW through processor-in-the-loop 两个整流器重构对并网容错的贡献，通过在环处理器馈送GMAW

IF 0.4

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.1884

O. Benaouda, B. Babes, Mohamed Bouchakour, Azzedine Bendiabdellah

{"title":"Contribution of the two rectifiers reconfiguration to fault tolerance connected to the grid network to feed the GMAW through processor-in-the-loop","authors":"O. Benaouda, B. Babes, Mohamed Bouchakour, Azzedine Bendiabdellah","doi":"10.30765/er.1884","DOIUrl":"https://doi.org/10.30765/er.1884","url":null,"abstract":"This study aims to propose a new diagnosis technique based on the Park’s vector and the polar coordinates of electric currents for the detection and location of open-circuit faults (OC) at the level of two rectifiers connected to the grid network to feed the Gas Metal Arc Welding process (GMAW). This diagnosis technique allows the early location of faulty switches (Thyristors) to overcome the negative effect of faulty rectifiers on welding current, welding voltage, and droplet diameter. For that, the reconfigurable rectifiers have been integrated to accomplish the welding process. The proposed diagnosis technique is applied to reconfigurable rectifiers connected to the GMAW system through numerical simulations using MATLAB/Simulink and real-time processor-in-the-loop (PIL) implementation via DSpace ds 1103 card. The simulation and PIL experimental results show similar trends and great success of the diagnosis technique and the two rectifiers reconfiguration for overcoming the open circuit faults and obtaining high welding quality while maintaining the work-piece and avoiding the distortions caused by the faulty rectifiers, which affecting the grid network and on the GMAW system at the same time.","PeriodicalId":44022,"journal":{"name":"Engineering Review","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69598534","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

Prediction of the temperature recorded in lap joint at during the friction stir welding 搅拌摩擦焊中搭接温度的预测

IF 0.4

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.2012

Abdelatif Mimmi, M. Merzoug, A. Ghazi

引用次数: 0

The annulling of the sudden appearance of an unbalance in rotary machines by using active magnetic bearings 用主动磁轴承消除旋转机械中突然出现的不平衡现象

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.2308

Aleksandar Tomović, Milanko Damjanović, Radoslav Tomović, Janko Jovanović

{"title":"The annulling of the sudden appearance of an unbalance in rotary machines by using active magnetic bearings","authors":"Aleksandar Tomović, Milanko Damjanović, Radoslav Tomović, Janko Jovanović","doi":"10.30765/er.2308","DOIUrl":"https://doi.org/10.30765/er.2308","url":null,"abstract":"The application of magnetic bearings has become more frequent during the last 20 years and represents a significant aspect of improvements in the construction of machines with rotary motion. With the advancement of technology, the number of applications in which magnetic bearings have found their application is increasing. In this paper, it is shown how the effect of magnetic forces can annul the negative influence of unbalance, which suddenly appeared in a rotor supported in active magnetic bearings. Such cases may occur in operation due to breakage and rotor parts falling off (e.g., fan blades), which will lead to a sudden change in the mass balance of the rotor system and dislocation of the centre of mass in relation to the geometric centre of the rotor. In the paper, a mathematical model of the dynamic behaviour of a rigid rotor in active magnetic bearings was developed. The model is nonlinear and has five degrees of freedom and can only be solved numerically. The Newmark beta method and the Newton-Raphson method were used to solve the system of nonlinear differential equations. The results of the simulation showed the advantages of using active magnetic bearings for annulling sudden occurrences of unbalance in rotary machines.","PeriodicalId":44022,"journal":{"name":"Engineering Review","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135495353","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

Triple longitudinal fracture of inhomogeneous beam under four-point bending 非均匀梁在四点弯曲作用下的三重纵向断裂

IF 0.4

Engineering Review Pub Date : 2023-01-01 DOI: 10.30765/er.2052

V. Ri̇zov

{"title":"Triple longitudinal fracture of inhomogeneous beam under four-point bending","authors":"V. Ri̇zov","doi":"10.30765/er.2052","DOIUrl":"https://doi.org/10.30765/er.2052","url":null,"abstract":"The present paper is devoted to fracture analysis of an inhomogeneous non-linear elastic beam configuration with three parallel longitudinal cracks. The material is continuously inhomogeneous along the beam height. The beam is subjected to four-point bending. The longitudinal fracture behavior is studied by applying the J-integral approach. Solutions to the J-integral are obtained for the three cracks. For this purpose, the curvature and the coordinates of neutral axes of the crack arms are determined by using the equations for equilibrium of the elementary forces in the cross-sections of different portions of the beam. The solutions to the J-integral are valid for arbitrary locations of the cracks along the beam height. Thus, the solutions are very useful for evaluating of the effects of locations of cracks on the fracture. The longitudinal fracture behavior is studied also in terms of the strain energy release rate in order to verify the solutions to the J-integral. Solutions to the strain energy release rate are derived for the three cracks by considering the complementary strain energy in the beam. The solutions to the J-integral are applied to evaluate the effects of locations of the cracks, the material inhomogeneity, the sizes of the beam cross-section, and the coordinates of the applications points of the external forces on the longitudinal fracture behavior of the beam.","PeriodicalId":44022,"journal":{"name":"Engineering Review","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69598834","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