Transactions of The Canadian Society for Mechanical Engineering最新文献_第6页

NUMERICAL INVESTIGATION OF MICROCHANNEL HEAT SINK WITH NOVEL OGIVE SHAPE RIBS 新型o形肋微通道散热器的数值研究

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-06-27 DOI: 10.1139/tcsme-2022-0180

Haseeb Ali, Fayyaz Alam, K. Akhtar, Muhammad Azed Abbas, Nasir Shah, Faraz Ahmad, Sahar Noor

{"title":"NUMERICAL INVESTIGATION OF MICROCHANNEL HEAT SINK WITH NOVEL OGIVE SHAPE RIBS","authors":"Haseeb Ali, Fayyaz Alam, K. Akhtar, Muhammad Azed Abbas, Nasir Shah, Faraz Ahmad, Sahar Noor","doi":"10.1139/tcsme-2022-0180","DOIUrl":"https://doi.org/10.1139/tcsme-2022-0180","url":null,"abstract":"In this study, three-dimensional numerical conjugate heat transfer modeling is used to investigate the thermal and hydraulic characteristics of the microchannel heat sink (MCHS) with different configurations of novel ogive shape ribs on channel walls. It was found that new proposed MCHS configurations with ogive ribs have a high Nusselt number as compared to the smooth microchannel heat sink because ogive ribs enhance the heat dissipation between channel walls and fluid by continuously interrupting the thermal boundary layer development. MCHS configuration with ogive ribs mounted on bottom wall improves the Nusselt number of smooth MCHS by 1.13-1.87 times, while MCHS with ogive ribs mounted on both side walls and MCHS with ogive ribs mounted on bottom channel wall improve Nusselt number by 1.12-1.70 and 1.08-1.59 times respectively at Re 100-1000. In terms of thermal enhancement factor criterion, the MCHS with ogive ribs on side walls shows superior performance at Re 100-300 and has the highest thermal enhancement factor. While MCHS with ogive ribs on bottom wall outperformed other configurations in terms of thermal enhancement factor at Reynold numbers greater than 300. A maximum thermal enhancement factor of 1.42 is reported for MCHS with bottom wall ribs ogive at Re=1000.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42383931","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 Model for Permeability in Fibre Reinforced Plastics 纤维增强塑料的渗透性模型

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-06-23 DOI: 10.1139/tcsme-2022-0084

A. Sherratt, M. Ghazimoradi, J. Montesano, A. Straatman, C. DeGroot, F. Henning

引用次数: 0

Uniform exhaust characteristics of new-type airbox components of continuous miner 连续采煤机新型风箱部件的均匀排气特性

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-06-19 DOI: 10.1139/tcsme-2022-0096

Honghong Yan, Xiaoyu Li, Zheng Fu, Zhiwei Bai, Hong Zhang

引用次数: 0

Residual life prediction of aluminum alloy plates under cyclic loading using an integrated prognosis method 基于综合预测法的循环载荷下铝合金板剩余寿命预测

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-06-12 DOI: 10.1139/tcsme-2023-0010

Talaz Baral, Sajad Saraygord Afshari, Xihui Liang

{"title":"Residual life prediction of aluminum alloy plates under cyclic loading using an integrated prognosis method","authors":"Talaz Baral, Sajad Saraygord Afshari, Xihui Liang","doi":"10.1139/tcsme-2023-0010","DOIUrl":"https://doi.org/10.1139/tcsme-2023-0010","url":null,"abstract":"Structures under cyclical loading are prone to fatigue-induced cracks. These cracks reduce structures’ residual life and increase their risk of failure. Historically, engineers have used degradation models like Paris’ law to estimate crack length when planning repair and maintenance on such structures. In this study, we developed a method to estimate Paris’ law parameters that are useful for predicting the fatigue life of 2024-T3 aluminum alloy plates under cyclic loading. A new optimization model is developed to estimate Paris’ law parameters’ mean and standard deviation. The research also considers the case in which the magnitude of the applied load is unavailable. Using Bayesian updating, the optimized parameters are further updated based on condition monitoring data to increase crack length estimation accuracy. The proposed method is validated with the help of Virkler crack propagation data for an aluminum alloy plate. According to the validation results, the average error in structure’s lifetime prediction based on crack length is 1.5% when the crack reaches 71% of the failure threshold.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44404741","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 in vitro experiment for remote health monitoring of implanted cardiac pacemakers using Petri nets 利用Petri网对植入式心脏起搏器进行远程健康监测的体外实验

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-06-02 DOI: 10.1139/tcsme-2023-0035

Shang-Kuo Yang, Chih-Min Yang, Kai-Jung Chen

{"title":"An in vitro experiment for remote health monitoring of implanted cardiac pacemakers using Petri nets","authors":"Shang-Kuo Yang, Chih-Min Yang, Kai-Jung Chen","doi":"10.1139/tcsme-2023-0035","DOIUrl":"https://doi.org/10.1139/tcsme-2023-0035","url":null,"abstract":"For heart disease patients with an implanted artificial pacemaker, monitoring the operational status of the pacemaker is a crucial and challenging issue. This study aims to design a transcutaneous optic telemetry (TOT) system that transmits light signals from a human body through the skin to a receiving circuit and carries pacemaker status information via the light signals to achieve transcutaneous telemetry. Petri net method is used to analyze the simulated pacemaker. Petri nets are constructed to illustrate the process of the pacemaker. Furthermore, the Petri nets for the process with four checkpoints deployed on the pacemaker are also constructed. The TOT system uses near-infrared signals generated by a light-emitting diode as a transmission medium, and the Pork skin animal model is used to validate the TOT system's feasibility and efficiency. The correct sequence of checkpoints determines the normal state of the pacemaker, and the information from these checkpoints is transmitted in vitro for interpretation through the TOT system. This study designed and implemented the TOT system. Experiments showed that the TOT system's design is effective in transmitting the checkpoints information through the pigskin layer without any significant interference. The results proved that the TOT system can transmit checkpoints information outside the body to achieve the transcutaneous telemetry diagnosis of the pacemaker. This study provides an alternative means to surgical operation for implanted pacemakers examination.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48394881","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

Design of ABS fuzzy sliding mode control system based on pavement recognition 基于路面识别的ABS模糊滑模控制系统设计

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-06-02 DOI: 10.1139/tcsme-2022-0098

Shuaiwei Zhu, Xiao-bin Fan, Pan Wang, Xinbo Chen

引用次数: 0

Speed control strategy for power line inspection robot servo system considering time-varying parameters 考虑时变参数的电力线巡检机器人伺服系统速度控制策略

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-05-24 DOI: 10.1139/tcsme-2022-0123

Dongyang Shang, Xiaopeng Li, Fanjie Li, Hexu Yang

{"title":"Speed control strategy for power line inspection robot servo system considering time-varying parameters","authors":"Dongyang Shang, Xiaopeng Li, Fanjie Li, Hexu Yang","doi":"10.1139/tcsme-2022-0123","DOIUrl":"https://doi.org/10.1139/tcsme-2022-0123","url":null,"abstract":"Most servo systems in power line inspection robots consist of a motor, an independent joint, and a load. In the process of crossing obstacles, the parameters in the servo systems have conspicuous time-varying properties due to the posture changes. The time-varying properties of dynamic parameters and the flexibility of the load would cause the rotation speed of the inspection robot to fluctuate, thereby affecting the motion accuracy. In this paper, the pole placement strategy was proposed to optimize the parameters in the proportional integral (PI) controller. The optimal controller parameters were selected in different postures to ensure steady speed output in the inspection robot servo system. First, the dynamic equations of the inspection robot servo system were established. Both joint flexibility and load flexibility were considered in the modeling process. Then, the Arnoldi algorithm was used to reduce the order of the servo system, and the transfer function from the speed to the drive torque was obtained. Next, the controller parameters were optimized using the pole placement method. By reasonably selecting the pole damping coefficient, the inspection robot could obtain a stable speed output. Finally, the numerical analysis and speed control of the inspection robot in different postures were analyzed. The results showed that the control strategy of pole placement could achieve a stable rotation speed for the inspection robot.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44664670","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

GA-LQR for vehicle semi-active suspension with BiLSTM inverse model of magnetic rheological damper 基于BiLSTM磁流变阻尼器逆模型的汽车半主动悬架GA-LQR

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-05-19 DOI: 10.1139/tcsme-2023-0027

C. Chen, R. Ma, Wan Ma

{"title":"GA-LQR for vehicle semi-active suspension with BiLSTM inverse model of magnetic rheological damper","authors":"C. Chen, R. Ma, Wan Ma","doi":"10.1139/tcsme-2023-0027","DOIUrl":"https://doi.org/10.1139/tcsme-2023-0027","url":null,"abstract":"This paper proposes a magnetic rheological (MR) semi-active control method based on Bidirectional Long Short-Term Memory (BiLSTM) neural network, linear quadratic regulator (LQR) control algorithm and genetic algorithm (GA). The LQR algorithm with GA optimizing the weight coefficients generates the expected damping force. Due to the nonlinear hysteresis characteristics of the MR damper (MRD) and the fact that its input and output have certain time dependence, an inverse model of MRD is established by BiLSTM. The control current is predicted by BiLSTM and then the current is input to the MR damper to obtain the damping force that is infinitely close to the expected damping force. The damping force is then applied to the suspension system to form a complete closed-loop feedback control, which realizes the damping effect and generates a real-time control. The simulation results show that the MRD inverse model can accurately predict the required control current, and the GA-optimized LQR control algorithm has a good suppression effect on the vertical vehicle acceleration (VVA), dynamic tire load (DTL) and suspension dynamic stroke (SDS).","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42626023","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

Research and application of nodal stress correction at stiffness mutation position for fatigue life evaluation 刚度突变点节点应力校正在疲劳寿命评估中的研究与应用

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-05-16 DOI: 10.1139/tcsme-2022-0163

Wenfei Liu, Ling Zhang, Liwen He, Zhixiong Gao

{"title":"Research and application of nodal stress correction at stiffness mutation position for fatigue life evaluation","authors":"Wenfei Liu, Ling Zhang, Liwen He, Zhixiong Gao","doi":"10.1139/tcsme-2022-0163","DOIUrl":"https://doi.org/10.1139/tcsme-2022-0163","url":null,"abstract":"This paper proposes a two-level stress correction method to overcome the limitations of the element stress average method that is typically used to calculate the nodal stress in finite element analyses and increase the fatigue life evaluation accuracy at the stiffness mutation positions of large-scale structure. In the first stage, a standard-deviation-weighted stress smoothing method is used to address the high element stress dispersion at the stiffness mutation point. The second stage involves a stress gradient correction method established based on the theory that the nodal stress is affected by other nodal stresses on the stress gradient path. The nodal stresses of the key points of an 80 tons gondola car body are extracted using the two-level stress correction method, and the fatigue life of the key points is evaluated considering the load spectrum of the Daqin coal line. The fatigue lives corresponding to the measured stress spectrum at the key points are compared with the simulated values. Compared with that obtained by the traditional method, the fatigue life of the key joints obtained by the proposed method is closer to the actual fatigue life. Additionally, the nodal stress at the stiffness mutation position obtained by the proposed method is more accurate. Therefore, the two-level stress correction method is a promising platform for the fatigue life evaluation of large-scale structures.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46707371","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

Magnetic circuit design of MR controller for improving the performance of the suspension 为提高悬架的性能，设计了磁流变控制器的磁路

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-05-16 DOI: 10.1139/tcsme-2023-0019

C. Chen, R. Ma, Wan Ma

引用次数: 0