Transactions of The Canadian Society for Mechanical Engineering最新文献_第9页

Optimal design of robust control based on compound form: steady-state performance and control cost 基于复合形式的鲁棒控制优化设计:稳态性能与控制成本

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-10-27 DOI: 10.1139/tcsme-2022-0058

Han Zhao, Fei Lin, Kang Huang, Chenming Li

引用次数: 0

Ultimate strength analysis of pitted plates with transverse cracks 带横向裂纹的点蚀板极限强度分析

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-10-20 DOI: 10.1139/tcsme-2022-0028

A. R. Ranji, Farzaneh Ahmadi, S. Alirezaee

引用次数: 1

Investigating the influence of the superfinishing process on the residual stress of the raceway 超精加工工艺对滚道残余应力影响的研究

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-10-20 DOI: 10.1139/tcsme-2022-0063

Zhou Chang, L. Hu

引用次数: 0

Nozzle resonance mechanism and cooperative optimization of self-excited oscillating pulse cavitation jet 自激振荡脉冲空化射流喷嘴共振机理及协同优化

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-10-20 DOI: 10.1139/tcsme-2021-0092

Xiaoming Yuan, Ning Wang, Wen Wang, Lijie Zhang, Yong Zhu

{"title":"Nozzle resonance mechanism and cooperative optimization of self-excited oscillating pulse cavitation jet","authors":"Xiaoming Yuan, Ning Wang, Wen Wang, Lijie Zhang, Yong Zhu","doi":"10.1139/tcsme-2021-0092","DOIUrl":"https://doi.org/10.1139/tcsme-2021-0092","url":null,"abstract":"The peak value and pulsation amplitude of the self-excited oscillating pulse cavitation jet nozzle are essential indices to evaluate the jet performance. We established a simulation model of the jet process of the nozzle to investigate the evolution mechanism of the inner and outer flow fields. We used the chamber fillet, chamber diameter, chamber length, and outlet-tube diameter as the design variables, and the peak value of the striking force and the amplitude of the pulsation of the striking force as the target variables. The collaborative optimization design method of the nozzle was determined by combining the orthogonal test method, the back propagation neural network, and the nondominated sorting genetic algorithm. As indicated by the results, when the inlet pressure was 3 MPa, the factors ranked as follows in terms of their effects on the jet performance of the nozzle: the chamber fillet, the outlet-tube diameter, chamber diameter, and the chamber length. To verify the feasibility of the collaborative optimization method, the nozzle was fabricated via 3D printing, and the simulation model was verified by testing. This study provides support to the development of design theory for self-oscillating pulsed cavitation jet nozzles.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45595034","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

Effects of injection parameters on CRDI-equipped stationary diesel engine fuelled with neat biodiesel mix derived from waste feedstocks 喷射参数对装有CRDI的固定式柴油机燃用来自废弃原料的纯生物柴油混合物的影响

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-10-18 DOI: 10.1139/tcsme-2022-0061

M. Anto Alosius, Pushparaj Thomai, Vikas Sharma, B. Chandrasekaran

{"title":"Effects of injection parameters on CRDI-equipped stationary diesel engine fuelled with neat biodiesel mix derived from waste feedstocks","authors":"M. Anto Alosius, Pushparaj Thomai, Vikas Sharma, B. Chandrasekaran","doi":"10.1139/tcsme-2022-0061","DOIUrl":"https://doi.org/10.1139/tcsme-2022-0061","url":null,"abstract":"This present work deals with the effects of injection parameters such as pilot-main injection mass ratio and dwell time on combustion, performance, and emission characteristics of a diesel engine. A single cylinder diesel engine is used in this research work with the flexibilities to modify different variables via open electronic control unit. Biodiesel mix (BDM) used in the present work is derived from waste feedstocks of used cooking oil and chicken fat. Throughout the experiment, engine load and speed were maintained constantly at 4.51 brake mean effective pressure and 1500 rpm, respectively. Different pilot mass ratios (10%, 20%, and 30%) and dwell times (20° crank angle (CA), 30° CA, and 40° CA) were tested and results were compared with conventional mode combustion. The results indicated that the pilot injections helped to reduce the ignition lag period and also shortened the combustion duration. The highest brake thermal efficiency of 34.78% was identified with the lowest pilot mass of 10%. According to the results, increased dwell time decreased the oxides of nitrogen emissions but increased the hydrocarbon emissions. The experiment revealed that BDM made of waste feedstocks could be an effective alternative for engine applications with optimized engine operating conditions.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41300785","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

Vibration characteristics of slotted disc spring series vibration isolation unit 开槽碟形弹簧系列隔振装置的振动特性

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-10-18 DOI: 10.1139/tcsme-2021-0214

Xiaoming Huang, Z. Yin, Maolin Liao, Mingge Li

{"title":"Vibration characteristics of slotted disc spring series vibration isolation unit","authors":"Xiaoming Huang, Z. Yin, Maolin Liao, Mingge Li","doi":"10.1139/tcsme-2021-0214","DOIUrl":"https://doi.org/10.1139/tcsme-2021-0214","url":null,"abstract":"There have been many pieces of research on the vibration isolation theory of the single slotted disc spring. However, the theory of the series slotted disc spring and its bandwidth optimization is rarely mentioned. Therefore, by considering the effect of boundary friction of series slotted disc spring units, we optimized the general formula for the load–deflection relationship of a slotted disc spring. The accuracy of the optimization was verified by simulation. Furthermore, it expands on the application range of the general formula, making it suitable for both single and series slotted disc springs. The nonlinear dynamic model of the slotted disc spring was established, and the multiscale method was used to study system parameters under strong excitation conditions. System parameters affected the response characteristics of the primary, superharmonic, and subharmonic resonance of series slotted disc spring units. Results showed that reducing the nonlinear stiffness and increasing the viscous damping coefficient and friction reaction coefficient are beneficial to improving the vibration isolation performance. We further deduced that the effective bandwidth of vibration isolation could be increased by adding the mass of the block, slotted depth, and number of slotted disc spring units. Therefore, this research provides theoretical guidance that is significant for engineering applications.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46600316","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

A comparison of four machine learning techniques and continuous wavelet transform approach for detection and classification of tool breakage during milling process 四种机器学习技术与连续小波变换方法在铣削过程刀具破损检测与分类中的比较

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-10-17 DOI: 10.1139/tcsme-2022-0052

H. Demir, I. Yesilyurt

{"title":"A comparison of four machine learning techniques and continuous wavelet transform approach for detection and classification of tool breakage during milling process","authors":"H. Demir, I. Yesilyurt","doi":"10.1139/tcsme-2022-0052","DOIUrl":"https://doi.org/10.1139/tcsme-2022-0052","url":null,"abstract":"In machining, the tool condition has to be monitored by condition monitoring techniques to prevent damage by the use of tools and the workpiece. Cutting forces acting on the tool between zero and maximum values cause the cutting edge to crack and break. Predetection of this situation in the cutting tool is very important to prevent any negative situation that may occur. This study introduces a vibration-based intelligent tool condition monitoring technique to detect involute form cutter faults such as tool breakage at different levels during gear production on a milling machine. Machine learning algorithms such as artificial neural network, random forest, support vector machine, and K-nearest neighbor were used to detect the broken teeth and its level of breakage. According to the results obtained, it was observed that all the algorithms are successful in detecting faults in different teeth; also they have identification advantages according to different fault levels. In addition, the time and frequency domain analysis and continuous wavelet transform were used to determine the local faults. The developed machine learning-based detection performances compared the classical time and frequency domain analyses and continuous wavelet transform to prove the effectiveness and precision of the proposed methods. The results showed that all of the machine learning techniques have satisfactory performance to be used as fast and precise detection tools without complex calculations for detecting tool breakage.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46860910","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

Effect of loading rate and height–diameter ratio on compression characteristics of aviation alloys 加载速率和高径比对航空合金压缩特性的影响

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-10-13 DOI: 10.1139/tcsme-2022-0042

Xiaofeng Ji, S. Li, Yuting Hu, Yuqing Li

{"title":"Effect of loading rate and height–diameter ratio on compression characteristics of aviation alloys","authors":"Xiaofeng Ji, S. Li, Yuting Hu, Yuqing Li","doi":"10.1139/tcsme-2022-0042","DOIUrl":"https://doi.org/10.1139/tcsme-2022-0042","url":null,"abstract":"Loading rate and height–diameter ratio are important factors affecting mechanical properties of materials. In this paper, the effects of the two factors on the stress–strain curves and section deformation characteristics of titanium alloy and aluminum alloy were compared by uniaxial compression tests. The gray correlation coefficient between compressive strength and loading rate, height–diameter ratio, and high compression ratio of the two alloys was calculated by using the gray correlation theory, and multiple regression models of compressive strength of the two alloys were established based on the least squares method. The results show that ( i) the gray correlation coefficient of the two alloys is greater than 0.6, indicating that loading rate and height–diameter ratio have obvious effects on the compressive strengths of aluminum alloy; ( ii) of loading rate and height–diameter ratio, loading rate has more significant effect on compressive strength; and ( iii) the correlation coefficient of the regression model of titanium alloy compressive strength is 0.9, which is higher than that of the corresponding model of aluminum alloy (0.65), indicating that the reliability of the regression model of titanium alloy is higher than that of aluminum alloy, and the established model can better predict the uniaxial compressive strength of titanium alloy.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43987291","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

An Innovative Design of INVELOX Wind Turbine: A Numerical Study on the Effects of Implementing Long Flange and Venturi Holes INVELOX风力机的创新设计:采用长翼缘和文氏孔的数值研究

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-10-06 DOI: 10.1139/tcsme-2022-0025

N. Maftouni, Yasaman Barghi

{"title":"An Innovative Design of INVELOX Wind Turbine: A Numerical Study on the Effects of Implementing Long Flange and Venturi Holes","authors":"N. Maftouni, Yasaman Barghi","doi":"10.1139/tcsme-2022-0025","DOIUrl":"https://doi.org/10.1139/tcsme-2022-0025","url":null,"abstract":"There is a global interest in renewable energy resources such as wind energy. INVELOX is an innovative. Some research has been performed to improve the efficiency of this machine by various geometrical modifications. Two new ideas are numerically analyzed in the present research to study their effects on the wind velocity when approaching the wind turbine, and consequently, on the wind turbine efficiency. In one of them, a relatively long flange is added to the original design, and in the other one, a pair of holes are considered in the venture to try to increase the mass flow rate of wind when reaching the turbine. Three various sizes of holes are studied here. The results reveal that using the long flange leads to an increment in the maximum wind velocity (about 15.45%) and more than 176% increase in the harvested power. In addition, the pair of holes in the venturi with a diameter of 35 cm results in a slight improvement in the harvested power. For the first time, the turbine has been modeled inside the venturi. A comparison between the results for the INVELOX, including the turbine, and that of the turbine in the free stream indicates that implementing INVELOX leads to 3.14 times more power generation.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45796371","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

Performance analysis of Vibration Characteristics on VCR Engine using Hybrid Honeycomb Structure 混合蜂窝结构VCR发动机振动特性的性能分析

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-10-03 DOI: 10.1139/tcsme-2022-0060

C. Senthilkumar, D. Vasudevan

引用次数: 0