International Journal for Simulation and Multidisciplinary Design Optimization最新文献_第5页

Experimental analysis and optimization of mechanical properties of FDM-processed polylactic acid using Taguchi design of experiment 采用田口实验设计对fdm加工的聚乳酸的力学性能进行了实验分析和优化

International Journal for Simulation and Multidisciplinary Design Optimization Pub Date : 2021-01-01 DOI: 10.1051/smdo/2021031

M. Abouelmajd, A. Bahlaoui, I. Arroub, M. Zemzami, N. Hmina, M. Lagache, S. Belhouideg

{"title":"Experimental analysis and optimization of mechanical properties of FDM-processed polylactic acid using Taguchi design of experiment","authors":"M. Abouelmajd, A. Bahlaoui, I. Arroub, M. Zemzami, N. Hmina, M. Lagache, S. Belhouideg","doi":"10.1051/smdo/2021031","DOIUrl":"https://doi.org/10.1051/smdo/2021031","url":null,"abstract":"Fused deposition modeling (FDM) is one of the most used additive manufacturing processes in the current time. Predicting the impact of different 3D printing parameters on the quality of printed parts is one of the critical challenges facing researchers. The present paper aims to examine the effect of three FDM process parameters, namely deposition velocity, extrusion temperature, and raster orientation on the bending strength, stiffness, and deflection at break of polylactic acid (PLA) parts using Taguchi design of experiment technique. The results indicate that the temperature has the highest impact on the mechanical properties of PLA specimens followed by the velocity and the orientation. The optimum composition offering the best mechanical behavior was determined. The optimal predicted response was 159.78 N, 39.92 N/mm, and 12.55 mm for the bending strength, bending stiffness, and deflection at break, respectively. The R2 obtained from analysis of variance (ANOVA) showed good agreement between the experimental results and those predicted using a regression model.","PeriodicalId":37601,"journal":{"name":"International Journal for Simulation and Multidisciplinary Design Optimization","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58005140","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: 12

Study of fluid flow inside closed cavities using computational numerical methods 封闭腔内流体流动的数值计算方法研究

International Journal for Simulation and Multidisciplinary Design Optimization Pub Date : 2021-01-01 DOI: 10.1051/SMDO/2021003

Mariya Helen Mercy Jk, P. V.

引用次数: 2

Computational investigations on port injected DEE in a biogas inducted HCCI engine 沼气诱导HCCI发动机端口注入DEE的计算研究

International Journal for Simulation and Multidisciplinary Design Optimization Pub Date : 2021-01-01 DOI: 10.1051/smdo/2021010

Karthick Jairam, Feroskhan Mohammed Musthafa, Kishorre Annanth Vijayan, M. Renganathan

{"title":"Computational investigations on port injected DEE in a biogas inducted HCCI engine","authors":"Karthick Jairam, Feroskhan Mohammed Musthafa, Kishorre Annanth Vijayan, M. Renganathan","doi":"10.1051/smdo/2021010","DOIUrl":"https://doi.org/10.1051/smdo/2021010","url":null,"abstract":"Owing to global climate change and atmospheric pollution, several automobile manufacturing companies look for homogeneously charged engines to satisfy strict emission levels. In the present work, computational fluid dynamics (CFD) investigations have been carried out to showcase the homogeneity of air-fuel mixture formation by port fuel injection and manifold fuel injection of a Biogas-Diethyl Ether (DEE) homogeneous charge compression engine (HCCI). The distributions of equivalence ratio based on fuel and the total air-fuel mixture is formulated and found to be in close agreement with the literature. Earlier investigations have shown that the use of biogas as a single fuel causes lower power output compared to other alternative fuels. Hence the present study is planned to use biogas with DEE as an ignition improver via fuel injection systems to find the best suitable fuel injection system. In the mesh independent study, port injection mode is found to perform better against the manifold injection mode when compared with the homogeneity factor. Iso-volumes of excess-air ratio based on biogas, diethyl ether and other variables such as the density, turbulent kinetic energy, turbulent dissipation rate of air-fuel mixture influencing the homogeneity and equivalence ratio are studied for better in-cylinder distribution under the port injection mode.","PeriodicalId":37601,"journal":{"name":"International Journal for Simulation and Multidisciplinary Design Optimization","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58004025","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: 2

Numerical study of new techniques drag reduction: application to aerodynamic devices 减阻新技术的数值研究:在气动装置上的应用

International Journal for Simulation and Multidisciplinary Design Optimization Pub Date : 2021-01-01 DOI: 10.1051/smdo/2021015

A. Agriss, M. Agouzoul, A. Ettaouil, Abdessamad Mehdari

引用次数: 2

Optimization of strip-layout using graph-theoretic methodology for stamping operations on progressive die: a case study 用图论方法优化级进模冲压作业的带材布置:一个案例研究

International Journal for Simulation and Multidisciplinary Design Optimization Pub Date : 2021-01-01 DOI: 10.1051/SMDO/2021004

S. Aly, Hend Abdelaaty, Osama Muneer Dawood, H. Hussein

{"title":"Optimization of strip-layout using graph-theoretic methodology for stamping operations on progressive die: a case study","authors":"S. Aly, Hend Abdelaaty, Osama Muneer Dawood, H. Hussein","doi":"10.1051/SMDO/2021004","DOIUrl":"https://doi.org/10.1051/SMDO/2021004","url":null,"abstract":"The design of the progressive die stamping process is optimized through minimizing the number of die stamping stations in the strip layout to reduce the die cost. In order to accomplish such end, in this study, a graph-theoretic based method is implemented to model and optimize the strip layout design. This method starts with mapping stamping features into stamping operations. This step is followed by constructing two graphs to model the precedence and adjacency constraints among stamping operations based on a set of manufacturing rules. These two graphs are called: operation precedence graph and operation adjacency graph. In the next step, a topological sorting algorithm clusters the operations into partially ordered sets. Then, a graph coloring algorithm clusters the partially ordered operations sets into final sequence of operations. The graph-theoretic technique has been implemented on a part currently manufactured by laser cutting process technology in some Egyptian factory in Cairo. This study indicated that the graph-theoretic technique offers several advantages including the ease of programming and transparency in understanding the obtained strip layout design. This is besides being a systematic and logically approach to obtain an optimized strip layout design. In general, the progressive die manufacturing can increase productivity of sheet metal works in Egypt, only in situations of mass production. The limitation is that it requires considerable skill level and training for labor to conduct die strip layout design.","PeriodicalId":37601,"journal":{"name":"International Journal for Simulation and Multidisciplinary Design Optimization","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58002681","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

CFD modelling of airborne virus diffusion characteristics in a negative pressure room with mixed mode ventilation 混合式通风负压室内空气中病毒扩散特性的CFD模拟

International Journal for Simulation and Multidisciplinary Design Optimization Pub Date : 2021-01-01 DOI: 10.1051/SMDO/2021001

Chakka Anuraghava, K. Abhiram, Vengalathur Naveen Sai Reddy, H. Rajan

{"title":"CFD modelling of airborne virus diffusion characteristics in a negative pressure room with mixed mode ventilation","authors":"Chakka Anuraghava, K. Abhiram, Vengalathur Naveen Sai Reddy, H. Rajan","doi":"10.1051/SMDO/2021001","DOIUrl":"https://doi.org/10.1051/SMDO/2021001","url":null,"abstract":"COVID-19 caused by severe acute respiratory syndrome (SARS) has accounted for huge collateral damage and as the virus is spreading faster and faster this study deals with isolation rooms or negative pressure rooms with 12 or more air changes per hour and maintaining a pressure difference of 2.5 pa which can help in reducing the transmission of the virus from affected to not affected persons. ANSI/ASHRAE/ASHE Standard 170–2008 recommendations are followed for hospital applications, to facilitate effective ventilation. These negative pressure rooms prevent the spread of the contaminated particles to the surroundings and by creating a negative pressure in the room whenever the door is opened the atmospheric air is sucked in and not the one which is present inside the room. The Computational fluid dynamics simulations are performed to investigate the diffusion of airbone virus inside a negative pressure room with mixed mode ventilation system. It was identified that the mixed mode ventilation system is more effective in controlling the spread of virus droplets inside the room","PeriodicalId":37601,"journal":{"name":"International Journal for Simulation and Multidisciplinary Design Optimization","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58002830","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

Experimental investigations and finite element analysis of milling of Inconel 718 alloy Inconel 718合金铣削加工试验研究及有限元分析

International Journal for Simulation and Multidisciplinary Design Optimization Pub Date : 2021-01-01 DOI: 10.1051/smdo/2021018

Akhil C. Kuriakose, Raman Balakrishnan, H. Vardhan, K. S. Vijay Sekar

{"title":"Experimental investigations and finite element analysis of milling of Inconel 718 alloy","authors":"Akhil C. Kuriakose, Raman Balakrishnan, H. Vardhan, K. S. Vijay Sekar","doi":"10.1051/smdo/2021018","DOIUrl":"https://doi.org/10.1051/smdo/2021018","url":null,"abstract":"Super-alloys encompass great challenges in machinability. One such alloy of much interest in applications is Inconel 718. Its increased hardness, low thermal diffusivity and high temperature strength make it desirable for applications, at the same time rendering its machining a demanding task. Extensive studies have been performed on machinability of Inconel 718, from the turning process stand-point. However, there is found to be a comparative dearth of work on the milling process. Taking into account the versatility of end-milling within the family of milling processes and the research gap, we found that a parametric optimization (aimed at minimum machining forces) of end-milling would be a meaningful effort. An experiment was conducted to study conditions that would help us achieve the same. In our further quest for optimization, chip morphology studies using SEM occupied a special place. Bearing in mind immense prediction capabilities of computer simulations based on FEA available today, we attempted process replication of the experimental work. The significant cutting forces were chosen as the benchmark factor for this purpose and proper attention was given to validation of the FEM created. Such FEM holds promise of being resourceful to drive up efficiency, with consequent spill-over to the production line.","PeriodicalId":37601,"journal":{"name":"International Journal for Simulation and Multidisciplinary Design Optimization","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58004659","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

Development of an advanced MES for the simulation and optimization of industry 4.0 process 开发先进的MES，用于模拟和优化工业4.0过程

International Journal for Simulation and Multidisciplinary Design Optimization Pub Date : 2021-01-01 DOI: 10.1051/smdo/2021022

K. Benfriha, Chawki El-Zant, Quentin Charrier, A. Bouzid, Peter Wardle, I. Belaidi, Stéphane Loubère, Nooshin Ghodsian, A. Aoussat

引用次数: 5

R-tree data structure implementation for Computer Aided Engineering (CAE) tools 计算机辅助工程(CAE)工具的r树数据结构实现

International Journal for Simulation and Multidisciplinary Design Optimization Pub Date : 2021-01-01 DOI: 10.1051/smdo/2021005

V. Shelar, Selamani Subramani, Jebaseelan Davidson

引用次数: 2

Finite element analysis of Ti6Al4V porous structures for low-stiff hip implant application Ti6Al4V多孔结构低刚度髋关节植入物的有限元分析

International Journal for Simulation and Multidisciplinary Design Optimization Pub Date : 2021-01-01 DOI: 10.1051/smdo/2021014

Porika Rakesh, Bidyut Pal

{"title":"Finite element analysis of Ti6Al4V porous structures for low-stiff hip implant application","authors":"Porika Rakesh, Bidyut Pal","doi":"10.1051/smdo/2021014","DOIUrl":"https://doi.org/10.1051/smdo/2021014","url":null,"abstract":"Solid metallic hip implants have much higher stiffness than the femur bone, causing stress-shielding and subsequent implant loosening. The development of low-stiff implants using metallic porous structures has been reported in the literature. Ti6Al4V alloy is a commonly used biomaterial for hip implants. In this work, Body-Center-Cubic (BCC), Cubic, and Spherical porous structures of four different porosities (82%, 76%, 70%, and 67%) were investigated to establish the range of ideal porosities of Ti6Al4V porous structures that can match the stiffness of the femur bone. The effective mechanical properties have been determined through Finite Element Analysis (FEA) under uniaxial compressive displacement of 0.32 mm. FEA predictions were validated with the analytical calculations obtained using Gibson and Ashby method. The effective mechanical properties of 82%, 76%, 70%, and 67% porous BCC and Cubic structures were found to match the mechanical properties of cortical bone closely. They were also well comparable to the Gibson-Ashby method-based calculations. BCC and Cubic porous structures with 67–82% porosity can mimic the stiffness of the femur bone and are suitable for low-stiff hip implant applications.","PeriodicalId":37601,"journal":{"name":"International Journal for Simulation and Multidisciplinary Design Optimization","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58004220","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