Transactions of The Canadian Society for Mechanical Engineering最新文献_第3页

Study on multibody contact load distribution characteristics of scraper conveying system of continuous miner 连续采煤机刮板输送系统多体接触载荷分布特性研究

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-07-28 DOI: 10.1139/tcsme-2023-0017

L. Yang, Hong Zhang, Yang Song, Wenzhou Chen, Youming Chen

{"title":"Study on multibody contact load distribution characteristics of scraper conveying system of continuous miner","authors":"L. Yang, Hong Zhang, Yang Song, Wenzhou Chen, Youming Chen","doi":"10.1139/tcsme-2023-0017","DOIUrl":"https://doi.org/10.1139/tcsme-2023-0017","url":null,"abstract":"Understanding the interaction of scraper chain-sprocket-tail drum-chain path is of great significance to improve the transportation efficiency and service life of the intermediate scraper conveying system of fully mechanized excavation equipment. The dynamic characteristics of the internal tension, running resistance and multi-contact interface load of the scraper chain are the theoretical basis of the research. Firstly, a method for obtaining periodic cyclic dynamic load history is proposed, and then the model of single chain scraper conveyor for continuous shearer is constructed by using RecurDyn and simulation structure. Finally, the influence of parameters such as conveying inclination angle and running speed of sleeve scraper chain on the reliable operation of conveying system is determined. The results show that when the conveying angle is 12 °, the scraper conveying system runs stably and the impact between multi-rigid bodies is small. As the chain speed increases from 0.85 m / s to 2.4 m / s, the wear of the conveying system gradually increases, and the contact load distribution of the upper chain plate 2, the upper chain plate 3 and the lower chain plate 3 is seriously worn.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42592935","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

Research on reducing flow shock of the digital hydraulic wind turbine 降低数字式液压风机流动冲击的研究

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-07-27 DOI: 10.1139/tcsme-2022-0167

Zengguang Liu, Benguo Zhang, Liejiang Wei, Daling Yue, Lu Ren, Liqiang Su, Yuyang Zhao

{"title":"Research on reducing flow shock of the digital hydraulic wind turbine","authors":"Zengguang Liu, Benguo Zhang, Liejiang Wei, Daling Yue, Lu Ren, Liqiang Su, Yuyang Zhao","doi":"10.1139/tcsme-2022-0167","DOIUrl":"https://doi.org/10.1139/tcsme-2022-0167","url":null,"abstract":"The wind turbine with digital hydraulic transmission can make the corresponding hydraulic pump work according to the wind speed, so that the hydraulic wind turbine can maintain high efficiency in the whole working wind speed. However, the switching of different displacement hydraulic pumps will cause a large flow impact on the hydraulic system of the wind turbine, affecting the working characteristics of the wind turbine and the absorption of wind energy. Based on the analysis of the working principle of the digital hydraulic wind turbine, the scheme of 5MW wind turbine is designed and the AMESim modele is established. The dynamic characteristics of the digital hydraulic wind turbine under two switching modes are compared. An advance valve closing control strategy is proposed to reduce the instantaneous flow impact. Simulation results show that the control strategy diminished the system flow shock by about 50% when switching the hydraulic pump. Finally, a hardware-in-loop system of 5.5kW digital hydraulic turbine is built to verify the effectiveness of the proposed control strategy. The research results provide a theoretical basis and technical reference for the efficient utilization of wind energy and stable operation of the digital hydraulic wind turbines.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49144404","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

Analysis of Kinematic Characteristics of 2-P(RPS+UPS) Parallel Mechanism with Six Degrees of Freedom 2-P(RPS+UPS)六自由度并联机构运动特性分析

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-07-21 DOI: 10.1139/tcsme-2022-0156

Yu Wang, Xuejian Ma, Yundou Xu, Jiabin Wu, Jiantao Yao, Yongsheng Zhao

{"title":"Analysis of Kinematic Characteristics of 2-P(RPS+UPS) Parallel Mechanism with Six Degrees of Freedom","authors":"Yu Wang, Xuejian Ma, Yundou Xu, Jiabin Wu, Jiantao Yao, Yongsheng Zhao","doi":"10.1139/tcsme-2022-0156","DOIUrl":"https://doi.org/10.1139/tcsme-2022-0156","url":null,"abstract":"At present, there is an increasing demand for the workspace required for assembly of components, and a parallel mechanism with large workspace is urgently needed to make up for it. Therefore, in this paper, a 2-P(RPS+UPS) parallel mechanism (where S, P, R, and U represent spherical, prismatic, revolute, and universal joints) with four branched chains and six degrees of freedom is proposed and its kinematic characteristics are analyzed. First, the speed of the 2-P(RPS+UPS) parallel mechanism is numerically derived and verified by simulation using ADAMS software. Then, the motion decoupling characteristics of the mechanism are analyzed from the expression of the speed and position relationship between the input and output of the mechanism. To minimize the force on each branch in the workspace, scale optimization of the 2-P(RPS+UPS) mechanism and the Stewart mechanism is performed. Further, analysis of the dexterity, singularity, and workspace of the 2-P(RPS+UPS) mechanism are conducted, and the performance of the mechanism is compared with that of the Stewart mechanism. The proposed parallel mechanism has fewer branches, a simple kinematic model, strong motion decoupling, high bearing capacity, a large workspace, and a low initial position height. Moreover, it can be conveniently transported and stored. Therefore, it has good application prospects in assembly and posture adjustment scenes requiring large workspace.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41421545","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

Simulating Polymer Drag Reduction Using a Modified Mixing Length in Zero Pressure Gradient 在零压力梯度下使用改进的混合长度模拟聚合物减阻

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-07-17 DOI: 10.1139/tcsme-2022-0183

Joshua White, Gordon Holloway, T. Jeans

引用次数: 0

A doubt–confirmation-based visual detection method for foreign object debris aided by assembly models 装配模型辅助下基于双确认的异物碎片视觉检测方法

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-07-11 DOI: 10.1139/tcsme-2022-0143

Feifei Kong, Delong Zhao, Fuzhou Du

{"title":"A doubt–confirmation-based visual detection method for foreign object debris aided by assembly models","authors":"Feifei Kong, Delong Zhao, Fuzhou Du","doi":"10.1139/tcsme-2022-0143","DOIUrl":"https://doi.org/10.1139/tcsme-2022-0143","url":null,"abstract":"Foreign object debris (FOD) impacts significantly on the quality control during product assembly because it usually causes product failure. The vision-based method as a nondestructive and efficient technology has become an important approach to FOD detection. However, it faces two important challenges: (1) inexhaustible types (almost any object can become FOD) and (2) unpredictable locations (FOD can appear almost anywhere on surface of a product). Therefore, this paper proposes an FOD visual detection method based on doubt–confirmation strategy and aided by assembly models. Firstly, a coarse-to-fine method is designed for feature extraction and registration to align the test image with the reference image. Then, to solve the unpredictable location problem, different types of suspected FOD are extracted from the test image by a combined method of supervision and nonsupervision. Finally, to solve the inexhaustible type problem, an image comparison method based on a Histogram of Line Direction Angle is proposed, and re-recognition rules of suspected FOD established to complete the final discrimination. Experiments are conducted on a product with complex shape, and the results demonstrate the effectiveness and efficiency of our approach.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43089216","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

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":" ","pages":""},"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":" ","pages":""},"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":" ","pages":""},"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