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

Investigation on contact behavior of planetary roller screw mechanism considering thermal deformation 考虑热变形的行星滚子螺杆机构接触行为研究

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-09-20 DOI: 10.1139/tcsme-2022-0044

Ji Miao, Shu-yan Wang, Xinping Shan, Bing-kui Chen

{"title":"Investigation on contact behavior of planetary roller screw mechanism considering thermal deformation","authors":"Ji Miao, Shu-yan Wang, Xinping Shan, Bing-kui Chen","doi":"10.1139/tcsme-2022-0044","DOIUrl":"https://doi.org/10.1139/tcsme-2022-0044","url":null,"abstract":"Previous thermal studies on planetary roller screw mechanism (PRSM) are mainly concentrated on frictional heat without the consideration of external thermal loads. However, the contact behavior of planetary roller screw mechanism varies greatly during the operation process. In this paper, a calculating method for frictional heat of planetary roller screw mechanism based on friction torque is proposed, and a transient thermal model is established to analyze the heat transfer of planetary roller screw mechanism at multiple thermal conditions. Then, an analytical method is introduced to investigate the temperature and the equations of its influences on the thermal deformation are derived. The influences of temperature distribution on the clearances and contact positions of the mating thread surfaces is studied as well. We found that the frictional heat, thermal resistance and thermal loads can significantly alter the temperature distribution consistency. The results indicate that the load-bearing capacity of planetary roller screw mechanism is greatly affected by the temperature differences between the planetary roller screw components. By allowing comprehensive thermal simulation, the proposed model can be utilized for PRSM optimization design.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43536069","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

Logic design method and optimization of hydraulic system for heavy-duty automatic transmission 重型自动变速器液压系统的逻辑设计方法与优化

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-09-12 DOI: 10.1139/tcsme-2021-0042

Huaichao Wu, Yongjia Dong, Gang Cao, Limei Zhao, Lv Yang

引用次数: 0

Assessment of a novel k–ω turbulence model for transonic centrifugal impeller simulations 一种用于跨声速离心叶轮模拟的新型k–ω湍流模型的评估

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-08-30 DOI: 10.1139/tcsme-2021-0159

Zhiyuan Liu, Peng Wang, Ben Zhao, Ce Yang

{"title":"Assessment of a novel k–ω turbulence model for transonic centrifugal impeller simulations","authors":"Zhiyuan Liu, Peng Wang, Ben Zhao, Ce Yang","doi":"10.1139/tcsme-2021-0159","DOIUrl":"https://doi.org/10.1139/tcsme-2021-0159","url":null,"abstract":"Numerical simulation of high pressure ratio transonic centrifugal compressors is challenging for the existing turbulence models. A lagged k–ω model proposed by Olsen and Coakley for nonequilibrium effects was first applied to simulate the transonic centrifugal impeller SRV2-O. As comparative case studies, four other turbulence models ( k–ω model, RNG k–ε model, SST-CC model, and EARSM model) were also computed. The comparison showed that ( i) the selection of the turbulence model had a great influence on SRV2-O impeller simulations; ( ii) the lagged k–ω model had an advantage over other models in terms of overall pressure ratio and internal flow characteristics; and ( iii) the lagged model predicted a smaller blockage area caused by leakage vortex breakdown than other models, closer to the experimental result. The detailed parameter examination indicated that the nonequilibrium parameter a0 in the lagged model had little influence on the Mach number distribution and choking mass flow rate but a significant influence on the static pressure on the shroud casing. For a higher Mach number compressor, a smaller a0 is recommended for bettering the simulation accuracy.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41354705","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

Research on the coupling characteristics of energy power density of cutting vibration and cutting heat based on the particle swarm optimization algorithm 基于粒子群优化算法的切削振动与切削热能量功率密度耦合特性研究

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-08-30 DOI: 10.1139/tcsme-2022-0022

Songyuan Li, S. Li, Yuqing Li, Petrov Anton Vladimirovich

{"title":"Research on the coupling characteristics of energy power density of cutting vibration and cutting heat based on the particle swarm optimization algorithm","authors":"Songyuan Li, S. Li, Yuqing Li, Petrov Anton Vladimirovich","doi":"10.1139/tcsme-2022-0022","DOIUrl":"https://doi.org/10.1139/tcsme-2022-0022","url":null,"abstract":"Cutting heat and cutting vibration are important basic research topics in the field of machining. Many factors affect cutting heat and cutting vibration, and cutting heat and cutting vibration also affect each other. This paper mainly studied the coupling characteristics between cutting vibration and cutting heat from the perspective of energy power density. A measurement system was built to collect the time-domain signals of cutting temperature and three-dimensional cutting vibration. Through Stefan–Boltzmann's law, the cutting thermal power density represented by the cutting temperature was obtained. Frequency domain analysis dealing with the self-power spectrum density was carried out on the three-dimensional vibration acceleration, and the operation of reducing the vibration dimension was carried out by principal component analysis. Based on the particle swarm optimization algorithm, two coupling models between cutting heat and cutting vibration were established. The research showed that the coupling correlation coefficient between cutting heat and cutting vibration was above 0.6. The coupling characteristics of cutting heat and cutting vibration were strong, and the impact of cutting vibration on cutting heat was more significant. The conclusions provide theoretical guidance for studying the coupling characteristics of cutting heat and cutting vibration from the energy perspective.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49228460","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

Flow force analysis and optimization of lock valve for heavy-duty automatic transmission 重型自动变速器锁紧阀流力分析与优化

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-08-24 DOI: 10.1139/tcsme-2021-0143

Huaichao Wu, Zhao Peng, Junqi Mu, Limei Zhao, Lv Yang

{"title":"Flow force analysis and optimization of lock valve for heavy-duty automatic transmission","authors":"Huaichao Wu, Zhao Peng, Junqi Mu, Limei Zhao, Lv Yang","doi":"10.1139/tcsme-2021-0143","DOIUrl":"https://doi.org/10.1139/tcsme-2021-0143","url":null,"abstract":"One of the main factors determining the stability of lock valve during opening is the flow force on spool. The size of the flow force profoundly affects the dynamic characteristics of the spool. In this paper, the flow force on a heavy-duty automatic transmission lock valve during the opening process is analyzed and optimized, and aiming to improve the opening smoothness of the lock valve. First, numerical simulation of the opening process of the main oil chamber flow path in the lock valve is carried out using dynamic mesh technology. The influence of internal flow field on the flow force under different parameters is studied. Second, the structural parameters and peaks of flow force obtained from the random sampling method are used as samples for training and prediction using the BP neural network. The prediction results pass the accuracy test. Last, the prediction results of the BP neural network are optimized using the genetic algorithm. Subsequent results show that this optimization method significantly reduces the flow force of spool and improves stability of the lock valve during opening by only changing the structural parameters. It also provides a new systematic direction for the optimization of other nonlinear mapping relationships.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42617682","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

Weather Aerodynamic Adaptation for Autonomous Vehicles: A Tentative Framework 自动驾驶汽车的天气空气动力学适应:一个暂定框架

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-08-15 DOI: 10.1139/tcsme-2021-0198

H. Hangan, M. Agelin-Chaab, I. Gultepe, G. Elfstrom, J. Komar

{"title":"Weather Aerodynamic Adaptation for Autonomous Vehicles: A Tentative Framework","authors":"H. Hangan, M. Agelin-Chaab, I. Gultepe, G. Elfstrom, J. Komar","doi":"10.1139/tcsme-2021-0198","DOIUrl":"https://doi.org/10.1139/tcsme-2021-0198","url":null,"abstract":"While Autonomous Vehicles (AVs) are potentially the future of transportation, one of the main issues that need to be addressed is their behaviour and response to adverse weather conditions. Herein we propose a research frame to understand and mitigate the impact of weather stressors (wind, rain, snow, ice, and fog) on AVs. A recently launched initiative to design and engineer an indigenous Canadian road vehicle serves as a background for this intended framework. The proposed frame consists of: (i) on-road testing and numerical (CFD) simulations to derive statistically significant critical weather conditions (weather design cases, WDCs); (ii) simulation of these weather conditions in the ACE climatic wind tunnel at Ontario Tech University, Canada in order to (iii) identify adaptive controls to minimize the effects of the WDCs on vehicles improving their aerodynamics, safety, and sensor functionality. This framework is intended to: (i) provoke discussions among the AV industry and research stakeholders in Canada and elsewhere and (ii) provide a context for future research in related areas such as AV aerodynamics, maneuverability, weather impacts (e.g. wind, rain, snow, ice and fog), sensors and soiling.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41245037","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

Torque Vectoring Algorithm for Distributed Drive Electric Vehicle Considering Coordination of Stability and Economy 考虑稳定性与经济性协调的分布式驱动电动汽车转矩矢量控制算法

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-08-02 DOI: 10.1139/tcsme-2022-0053

Qian Chen, Yong Li, Tao Zhang, Feng Zhao, Xingyuan Xu

{"title":"Torque Vectoring Algorithm for Distributed Drive Electric Vehicle Considering Coordination of Stability and Economy","authors":"Qian Chen, Yong Li, Tao Zhang, Feng Zhao, Xingyuan Xu","doi":"10.1139/tcsme-2022-0053","DOIUrl":"https://doi.org/10.1139/tcsme-2022-0053","url":null,"abstract":"Working in high-efficiency areas for in-wheel motors (IWMs) and minimum tires slip should be considered when driving for distributed drive electric vehicles (DDEV). Therefore, a novel torque vectoring control algorithm is proposed to lower energy dissipation and ensure lateral stability, which consists of a linear quadratic regulator (LQR) and a Proportion Integration (PI) control module in upper controller to calculate desired additional yaw-moment and total driving torque respectively for following desired yaw rate, side slip angle and longitudinal velocity. In addition, the stability objective function considering tires working load and the economic objective function considering working efficiency of IWMs and tires slip energy are established separately in lower controller. The fitness function of coordinating lateral stability and economy is obtained by phase plane method. Particle swarm optimization (PSO) algorithm with a superior initial population (SIP-PSO) is proposed to solve torque distribution coefficients for torque distribution of DDEV. Finally, simulation and hardware-in-the-loop (HIL) test results under DLC and SLC maneuvers on lower adhesion road indicate that the proposed algorithm can effectively lower the energy loss of IWMs working and tires slip when ensuring lateral stability under different working conditions.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45893542","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

Signal-to-noise ratio analysis on saw-tooth vortex generator in vehicle radiators 汽车散热器锯齿涡发生器的信噪比分析

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-07-04 DOI: 10.1139/tcsme-2022-0050

Jiaxin Liu, Lingqin Meng, Yadong Liu, E. D. Özdemir, M. Aksel

{"title":"Signal-to-noise ratio analysis on saw-tooth vortex generator in vehicle radiators","authors":"Jiaxin Liu, Lingqin Meng, Yadong Liu, E. D. Özdemir, M. Aksel","doi":"10.1139/tcsme-2022-0050","DOIUrl":"https://doi.org/10.1139/tcsme-2022-0050","url":null,"abstract":"Fin-and-flat tube heat exchangers (FFTHEs) are widely applied to construction vehicles due to native advantages. An elementary unit out of such one was numerically compared with the corresponding experimental validation to secure accuracy, then, saw-tooth vortex generators (SVGs) were introduced to the rear of the tube, and further analyzed under the same configuration. JF factors from two models were utilized to confirm the initial expectation for a higher comprehensive performance, which also encouraged the following L18(36) orthogonal test on wing width (ww), wing height (sw), blade height (sb), flow attack angle (Gf), installation angle (Gi) and saw-tooth number (Ns) for signal-to-noise ratio (SNR) and contribution rate (CR). The results stated that the numerical implementation could be capable of the following analyses with the maximum errors of 5.00% for heat transfer coefficient and 5.33% for pressure loss, and also corroborate performance enhancement with a JF increment of 29.9% in the following comparison. The CRs of Gi, Ns, sw, ww, Gf, and sb are 30.39%, 19.61%, 15.69%, 13.73%, 10.78%, and 9.80%, respectively.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63756884","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

Experimental study on fuel line pressure fluctuation of biodiesel-DME blends in a common-rail injection system 生物柴油-二甲醚共轨喷射系统燃油管路压力波动的实验研究

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-06-30 DOI: 10.1139/tcsme-2021-0172

J. Hou, Huayang Zhang, Xiaodong An

{"title":"Experimental study on fuel line pressure fluctuation of biodiesel-DME blends in a common-rail injection system","authors":"J. Hou, Huayang Zhang, Xiaodong An","doi":"10.1139/tcsme-2021-0172","DOIUrl":"https://doi.org/10.1139/tcsme-2021-0172","url":null,"abstract":"The fuel line pressure fluctuations at the injector outlet of biodiesel-DME blends in a common-rail injection system are investigated using the wavelet packet transform. The effects of injection condition and dimethyl ether (DME) blending ratio on the pressure fluctuation characteristics are determined. The results show that the pressure fluctuation intensity determines wavelet packet energy distribution in the three sub-signals. The overall pressure fluctuation is reflected by sub-signal Sig1, which is composed of sub-signal Sig2 and Sig3. Sig2 exhibits medium frequency pressure fluctuations, and mainly occurs in the pressure rise stage and the pressure drop stage. Sig3 exhibits high frequency pressure fluctuations, mainly locates in the pressure stabilization stage. The pressure fluctuations at high injection pressure are more significant compared to those at low injection pressure. Biodiesel-DME blends display similar effects of injection pressure. With the increase of injection pressure, the mean energy and the standard deviation of Sig1, Sig 2 and Sig3 increase, especially those of Sig1 and Sig3. When DME is blended in the biodiesel, the pressure fluctuations for biodiesel-DME blends are more significant compared to biodiesel. With the increase of DME blended ratio, the mean energy and the standard deviation of Sig1 and Sig3 gradually increases.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47477672","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

Mechanical characterization of Al7075 reinforced with borosilicate powder 硼硅酸盐粉末增强Al7075的力学性能

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-05-12 DOI: 10.1139/tcsme-2021-0161

M. Ayyandurai, B. Mohan

引用次数: 0