Transactions of The Canadian Society for Mechanical Engineering最新文献_第10页

Influence of Piston Crown Shape with Spark, Fuel injector positions, EGR and Fuel System Control on Emissions of Modified GDI Engines over base Diesel Engine 火花活塞冠形状、喷油器位置、EGR和燃油系统控制对改进型GDI发动机排放的影响

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-02-11 DOI: 10.1139/tcsme-2021-0163

Shivakumar Nagareddy, Kumaresan Govindasamy

{"title":"Influence of Piston Crown Shape with Spark, Fuel injector positions, EGR and Fuel System Control on Emissions of Modified GDI Engines over base Diesel Engine","authors":"Shivakumar Nagareddy, Kumaresan Govindasamy","doi":"10.1139/tcsme-2021-0163","DOIUrl":"https://doi.org/10.1139/tcsme-2021-0163","url":null,"abstract":"In the present work, developed the combustion chamber profiles for spray, wall, and air guided mode GDI engines. Modified the piston top surface for each combustion chamber geometry of GDI engine from hemispherical bowl to trapezoidal bowl and pent roof shape which include a scoop type bowl on one side (towards injector position) to impart better squish, swirl, tumble and turbulence effects required to improve the mixture formation. Also, modified the cylinder head to each combustion chamber with different locations of spark plug and fuel injector. Optimized the fuel split injections with durations, ignition timing and percentage of exhaust gas recirculation towards emissions reduction, especially soot and oxides of nitrogen. Emission tests were conducted on base diesel engine and all three modified combustion chamber geometry GDI engine. It is clear from the results that oxides of nitrogen emission in wall guided mode was reduced up to 5% till 75% of the loads when compare with both spray-guided and air-guided combustion modes, and later it is increased. Overall, wall guided combustion chamber geometry GDI engine shows better results at 150 bar FIP, when compare with base Diesel engine; oxides of nitrogen emissions were reduced from 377 ppm to 77 ppm and soot emissions were reduced from 29.3 g/km to 4.5 g/km at high torque.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43142840","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

Optimizing the parameters for force, temperature, and metal removal rate: a multi-feature fusion model for titanium alloy milling 优化力、温度和金属去除率参数:钛合金铣削的多特征融合模型

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-02-09 DOI: 10.1139/tcsme-2021-0086

Songyuan Li, S. Li, Yuqing Li, E. Popov

{"title":"Optimizing the parameters for force, temperature, and metal removal rate: a multi-feature fusion model for titanium alloy milling","authors":"Songyuan Li, S. Li, Yuqing Li, E. Popov","doi":"10.1139/tcsme-2021-0086","DOIUrl":"https://doi.org/10.1139/tcsme-2021-0086","url":null,"abstract":"In the processing of titanium alloy, the milling parameters determine the process temperature and force. Increasing the milling temperature and force can affect the quality of the titanium alloy produced. In this study, we developed a multi-feature fusion model for high-quality titanium alloy workpieces. In the milling experiments with different milling parameters, an infrared thermal imager and a three-dimensional dynamometer were used to collect the time-domain signals for temperature near the tip of the milling cutter and the milling force. Based on the experimental data, a multi-feature fusion model was established with the milling temperature, milling force, and metal removal rate as the targeted variables, and the milling parameters as the optimized parameters. Based on the particle swarm optimization algorithm, the optimal milling parameters within the test parameters were resolved using the multi-feature fusion model. The results show that: within the milling parameter range of the experimental design, the optimal solutions for the milling parameters are: milling speed of 22.14 m/min; feed speed of 8.25 mm/min; milling depth of 1.36 mm. The multi-feature fusion model resulted in lower milling temperature and force, and provides theoretical guidance for scientifically designing the parameters for the milling process.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45390167","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: 2

Bending response analysis of a laminated, tapered, curved, composite panel made from an agglomerated and wavy MWCNT–glass fiber–polymer hybrid 由聚集和波浪状mwcnt -玻璃纤维-聚合物混合材料制成的层压，锥形，弯曲复合板的弯曲响应分析

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-02-09 DOI: 10.1139/tcsme-2021-0084

Mesfin Kebede Kassa, Ananda babu Arumugam

{"title":"Bending response analysis of a laminated, tapered, curved, composite panel made from an agglomerated and wavy MWCNT–glass fiber–polymer hybrid","authors":"Mesfin Kebede Kassa, Ananda babu Arumugam","doi":"10.1139/tcsme-2021-0084","DOIUrl":"https://doi.org/10.1139/tcsme-2021-0084","url":null,"abstract":"The work investigates the influence of multiwalled carbon nanotubes (MWCNTs) on the bending behavior of laminated, spherical, cylindrical, hyperbolic, and elliptical tapered composite panels made from a MWCNT–glass fiber–polymer hybrid and subjected to transverse loading conditions. The deflection and stress behavior of the composite panels were studied by developing a mathematical model based on high-order shear deformation theory using finite element (FE) formulation. In this context, the agglomeration and waviness of MWCNTs were modeled and characterized using the Eshelby–Mori–Tanaka approach and a continuum mechanics based 3-D representative volume element (RVE), respectively. Subsequently, glass fiber was introduced as a reinforcement phase, and the elastic properties of the three-phase hybrid composite material were obtained using the Chamis model. The developed FE formulation was validated theoretically and experimentally. Further, detailed parametric studies were performed to examine the influence of micromechanical and structural characteristics such as weight fraction of MWCNTs, weight fraction of fiber, type of load, taper configuration, curved geometry, curvature ratio, and length to thickness ratio of the panel on the bending behavior of the composite panels. The effective laminated tapered curved composite panel, TC-3, tailored with improved MWCNT characteristics, can substantially resist the stresses from a bending load.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44791730","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: 4

Modeling the effect of the inclination angle on the dynamic response of a biaxially pre-stressed plate 建立了倾角对双轴预应力板动力响应的影响模型

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-02-04 DOI: 10.1139/tcsme-2020-0111

Ahmet Daşdemir

引用次数: 0

Experimental investigation of dynamic vibration absorption structure for designing better tuned particle damper 优化调谐颗粒阻尼器动态吸振结构的实验研究

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-01-26 DOI: 10.1139/tcsme-2021-0015

Kai Zhang, Farong Kou

{"title":"Experimental investigation of dynamic vibration absorption structure for designing better tuned particle damper","authors":"Kai Zhang, Farong Kou","doi":"10.1139/tcsme-2021-0015","DOIUrl":"https://doi.org/10.1139/tcsme-2021-0015","url":null,"abstract":"Tuned particle damper (TPD) has been proposed for improving the damping performance of the traditional particle damper by introducing the dynamic vibration absorption structure. To better design TPD that can be seen as a dynamic vibration absorber (DVA) with particle damping, the change of dynamical characteristic of a DVA system was explored based on a primary cantilever system by introducing stainless steel balls and carbon steel mass block respectively. By a series of sine sweep tests on the primary cantilever system attached with a spring-mass structure, a host of frequency response function (FRF) curves under different conditions were obtained. Experimental results show that the dynamic behavior of the primary cantilever system is more displayed on the resonance peak closer to the mass control area, while the dynamic behavior of the additional spring-mass structure is more displayed on the resonance peak closer to the stiffness control area. Based on the results, the abnormal but desirable dynamical characteristic of TPD presented in the discrete mass experiment is analyzed, which indicates preliminarily the design direction of TPD structure in engineering practice.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42872820","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

Aerodynamic performance analysis of supercritical airfoil in Helicopter main rotor 直升机主旋翼超临界翼型气动性能分析

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-01-25 DOI: 10.1139/tcsme-2021-0067

Inamul Hasan, M. R., R. P, S. R

{"title":"Aerodynamic performance analysis of supercritical airfoil in Helicopter main rotor","authors":"Inamul Hasan, M. R., R. P, S. R","doi":"10.1139/tcsme-2021-0067","DOIUrl":"https://doi.org/10.1139/tcsme-2021-0067","url":null,"abstract":"Helicopters can be considered as “any-terrain vehicles” as they can take off and land at any location. The aerodynamic characteristics of helicopters are more complicated than those of fixed-wing aircraft. The rotor is the source of lift and thrust for helicopters. The complex aerodynamic characteristics of helicopters are due to their rotational frame and because variations in velocity and pressure throughout the blades. Moreover, the airfoil undergoes phase changes because half of the phase exhibits a trailing edge toward the flow. In this study, four isolated helicopter rotor blades were analyzed using ANSYS Fluent in terms of flow in a static domain under a non-rotating condition. Supercritical airfoils used in high-speed aircraft were found to be incredibly useful in the transonic region. They increase the critical and drag-divergence Mach numbers. Incorporating supercritical airfoils in helicopter rotor blades ensures suitable flow characteristics and more than 50% efficiency compared with those of the HH02 blade in a stationary frame. Analyses were conducted for HH02 and NASA SC(2)-0714 airfoils considering Mach numbers of 0.3, 0.4, and 0.5 without rotation. The post-processing results prove that the NASA SC(2)-0714 airfoil rotor achieves better aerodynamic performance than the HH02 airfoil rotor.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42022023","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: 3

Optimization of performance of PV panels and selection of best site for solar park in Pakistan 巴基斯坦光伏板性能优化和太阳能公园最佳选址

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-01-13 DOI: 10.1139/tcsme-2021-0134

M. Uzair, Syed Umair Hassan Kazmi, M. Yousuf, Syed Asad Ali Zaidi

{"title":"Optimization of performance of PV panels and selection of best site for solar park in Pakistan","authors":"M. Uzair, Syed Umair Hassan Kazmi, M. Yousuf, Syed Asad Ali Zaidi","doi":"10.1139/tcsme-2021-0134","DOIUrl":"https://doi.org/10.1139/tcsme-2021-0134","url":null,"abstract":"To incorporate solar energy efficiently into a country, it is needed to know the optimal tilt and azimuth angle of the solar collectors' location. Also, to build a solar park, it is necessary to know the most suitable and high-energy generating place inside a country, thus saving time and money. This study analyzed collector geometry for Karachi in particular and Pakistan in general. Karachi has the potential of 339.36 kW-hr/m2/annum energy at an annually optimal fixed tilt of 26°. In case collector geometry had to be changed in Karachi, a range of 40° azimuth angle and 20° tilt angle from its maximum value is available. The power produced in this case would only have a difference of 1%. Optimal yearly and monthly tilt of most of the locations of Pakistan (300+) were calculated. Through them, it was revealed that the Optimal Tilt of Pakistan follows the value of latitude closely. Generally, changing the tilt angle monthly is recommended for areas that produce more energy, while fixed annual tilt could be suitable for low energy-producing regions. Effects of temperature were also incorporated while finding the energy produced by the photovoltaic (PV) panels.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41525408","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: 1

Numerical investigation of the effect of hole reaming on fatigue life by cold expansion 扩孔对冷膨胀疲劳寿命影响的数值研究

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-01-11 DOI: 10.1139/tcsme-2021-0123

Kuanyu Liu, Xinsheng Yang, Li Zhou, Ming Li, Weijin Zhu

引用次数: 1

Fatigue life analysis of pressure vessel based on residual strength and crack size 基于残余强度和裂纹尺寸的压力容器疲劳寿命分析

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2021-12-14 DOI: 10.1139/tcsme-2021-0063

Mengyu Zhu, Xintian Liu, Jiafeng Lai, Jiao Luo

引用次数: 4

Combine Assembly Fault Diagnosis Based on Optimized Multi-scale Reverse Discrete Entropy 基于优化多尺度反向离散熵的组合装配故障诊断

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2021-12-10 DOI: 10.1139/tcsme-2021-0090

S. Zhao, Jiaming Zhang, Liyou Xu, Xiaoliang Chen

{"title":"Combine Assembly Fault Diagnosis Based on Optimized Multi-scale Reverse Discrete Entropy","authors":"S. Zhao, Jiaming Zhang, Liyou Xu, Xiaoliang Chen","doi":"10.1139/tcsme-2021-0090","DOIUrl":"https://doi.org/10.1139/tcsme-2021-0090","url":null,"abstract":"An optimized multi-scale reverse discrete entropy (RDE, OMRDE) method for feature extraction is proposed to address the lack of effective feature extraction and detection methods for combining harvester assembly fault inspection. This method is used to extract vibration signal features from the harvester. A fault diagnostic method is designed to verify the efficiency of the associated methods. First, a comparative study of RDE, multi-scale inverse RDE (MRDE), and OMRDE was performed using simulated signals to verify the effectiveness of OMRDE. Second, the FSTPSO–VMD method was used to decompose the vibration signal of the combine harvester assembly fault, and the OMRDE, MRDE, and fuzzy entropy were compared and analyzed. The actual feature extraction effect of the three entropy functions reached the highest classification accuracy (88.5%) after using OMRDE to extract features. Finally, a fusion feature set is constructed to further improve the classification accuracy, and the LSSVM classifier is further optimized through FSTPSO. Analytical results show that the FSTPSO–LSSVM classifier constructed in this work adopts the fused feature with an accuracy of 93%, which is better than other common methods and verifies the validity of the fault diagnostic model. Therefore, the performance of the OMRDE proposed in this work is better than those of MRDE and MRDE. The proposed fault diagnostic model can realize accurate classification of the combine harvester assembly fault detection.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41477039","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