Transactions of The Canadian Society for Mechanical Engineering最新文献

Research on Optimal Fast Terminal Sliding Mode Control of Horizontal Vibration of High-speed Elevator Car System 高速电梯轿厢系统水平振动的最佳快速终端滑模控制研究

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-12-15 DOI: 10.1139/tcsme-2023-0055

Hua Li, Qin He, Li Li, Lixin Liu

{"title":"Research on Optimal Fast Terminal Sliding Mode Control of Horizontal Vibration of High-speed Elevator Car System","authors":"Hua Li, Qin He, Li Li, Lixin Liu","doi":"10.1139/tcsme-2023-0055","DOIUrl":"https://doi.org/10.1139/tcsme-2023-0055","url":null,"abstract":"An optimal fast terminal sliding mode control strategy is proposed to suppress effectively the horizontal vibration of the high-speed elevator car system is caused by uncertainties such as rail unevenness, elevator load variation, and component friction and wear. Firstly, considering the elevator's composition structure and vibration characteristics, a 4-degree-of-freedom car system horizontal vibration active control model with a symmetric distribution of the control center is established. Secondly, considering the nonlinear factors of the rolling guide shoe and the external excitation, an optimal fast terminal sliding mode controller (PFTSMC) based on the sliding mode variable structure control is designed to eliminate the horizontal vibration of the car, define the nonsingular terminal sliding mode surface, and introduce the fast terminal convergence law based on the fast terminal attractor to ensure the accessibility of the sliding mode motion and reduce the jitter vibration. In addition, optimization of controller parameters using random weight particle swarm algorithm (RNW-PSO) to improve the controller's vibration suppression performance and robustness. Finally, the proposed controller can achieve more than 51.2% attenuation of horizontal vibration acceleration and displacement, showing that PFTSMC can effectively reduce the horizontal vibration of high-speed elevator car systems and improve ride comfort.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":"201 3","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138997136","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 Study on the Contact Quality Improvement of Fin to Tube Assemblies 鳍片与管组件接触质量改进研究

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-12-12 DOI: 10.1139/tcsme-2023-0062

Zijian Zhao, Hakim bouzid

{"title":"A Study on the Contact Quality Improvement of Fin to Tube Assemblies","authors":"Zijian Zhao, Hakim bouzid","doi":"10.1139/tcsme-2023-0062","DOIUrl":"https://doi.org/10.1139/tcsme-2023-0062","url":null,"abstract":"The fin-to-tube assembly is a prevalent connection type in heat exchangers, particularly in smaller equipment. During the assembly process, a die expands the tube to close the gap between the tube and the fin collar, enhancing heat transfer. The die expansion reduces the gap and creates slight interference that enables the fin collar to adhere to the tube. However, contact is not uniformly continuous across the width of the mating surfaces, as indicated by recent research. Due to this suboptimal contact quality, the conduction of heat is significantly impaired, and the efficiency of the heat exchanger is thus compromised. This study aims to establish a relationship between the profile shape of the fin hole and the contact quality, offering guidelines to enhance tube-to-fin contact. Tubes of various materials, dies of different sizes, and fins with a collar featuring an hourglass proposed shape are examined. The influence of a fin-hole hourglass shape will be assessed through a series of expansion simulations conducted on diverse finite element models. Subsequently, the micro-gaps formed during the expansion process at the tube-to-fin interface will serve to evaluate the quality of the contact surface, and a thermal transient analysis will be implemented to corroborate the findings.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":"31 12","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139009943","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

ERROR COMPENSATION OF A 2TPR&2TPS PARALLEL MECHANISM BASED ON PARTICLE SWARM OPTIMIZATION 基于粒子群优化的 2tpr&2tps 并行机制的误差补偿

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-12-08 DOI: 10.1139/tcsme-2023-0004

Chao He, Mingfang Chen, Hongjian Liang, Yongxia Zhang, Zhongping Chen

引用次数: 0

Trends in Research on Latent Heat Storage Using PCM, A Bibliometric Analysis 利用 PCM 进行潜热储存的研究趋势，文献计量分析

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-12-04 DOI: 10.1139/tcsme-2023-0093

Atif Shezad, Muhammad Tufail, Muhammad Uzair

{"title":"Trends in Research on Latent Heat Storage Using PCM, A Bibliometric Analysis","authors":"Atif Shezad, Muhammad Tufail, Muhammad Uzair","doi":"10.1139/tcsme-2023-0093","DOIUrl":"https://doi.org/10.1139/tcsme-2023-0093","url":null,"abstract":"Latent heat thermal energy storage (LHTES) is particularly noteworthy thermal energy storage (TES) technology due to its high energy storage density. LHTES involves the use of phase change materials (PCMs) to store thermal energy, which can subsequently be used for heating and cooling applications as well as power generation. This paper outlines the techniques and tools employed to analyze existing literature on TES and LHTES systems research. Bibliometric, a statistical approach to analyzing written publications in specific fields of research, is used to identify significant findings and determine the course of scientific output. A strategic analysis of knowledge development is crucial for detecting opportunities and advancements within the field. This research offers valuable insights into the publication trends within the fields of TES and LHTES over the last three decades. Additionally, the study conducts a thorough examination of the geometric configurations of LHTES systems and their potential impacts on ongoing and future research. By tracking publication rates over thirty years, this study provides a comprehensive overview of how research in TES and LHTES has evolved. Understanding these trends helps researchers and policymakers gauge the growth and relevance of these fields in the context of energy storage and thermal management.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":"61 24","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138605094","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

Comparison of Flow and Loss Aspects in the Rotors of a Counter Rotating Turbine 反转涡轮机转子中流量和损耗方面的比较

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-11-29 DOI: 10.1139/tcsme-2023-0100

Subbarao Rayapati

{"title":"Comparison of Flow and Loss Aspects in the Rotors of a Counter Rotating Turbine","authors":"Subbarao Rayapati","doi":"10.1139/tcsme-2023-0100","DOIUrl":"https://doi.org/10.1139/tcsme-2023-0100","url":null,"abstract":"Counter Rotating Turbine (CRT) is considered as an alternative way of obtaining more work without the use of another guide vane in a multi-stage turbine. In such a scenario, present study discusses about the flow transmission that takes place in rotors, which are rotating in the reverse direction to each other. CRT stage with nozzle and rotors is modeled using ICEMCFD 14.5. Total pressure is specified at the inlet of turbine stage and flow rate is specified at the second rotor outlet. Contours of total pressure and turbulence kinetic energy provide the flow pattern in terms of steadiness, wake formation, incidence, flow circulation and flow turbulence. Velocity vectors and streamlines offer clarity about flow separation, vortex formation and wake detection. Deviation of flow characteristics from inlet to outlet of CRT stage are also presented. For further understanding of the flow, transverse planes at difference locations of the rotors are taken. Entropy and secondary velocity vectors are used to identify the loss aspect at each section of the rotors. From the blade-to-blade contours, the effect of absence of second guide vane is clear. Clearly, flow through rotor 1 is advantageous and flow through rotor 2 is chaotic.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":"13 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139210941","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

Feature selection and framework design toward data-driven predictive sustainability assessment and optimization for additive manufacturing 特征选择和框架设计，实现数据驱动的增材制造可持续性预测评估和优化

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-11-24 DOI: 10.1139/tcsme-2023-0151

Ahmed Z Naser, F. Defersha, Sheng Yang

{"title":"Feature selection and framework design toward data-driven predictive sustainability assessment and optimization for additive manufacturing","authors":"Ahmed Z Naser, F. Defersha, Sheng Yang","doi":"10.1139/tcsme-2023-0151","DOIUrl":"https://doi.org/10.1139/tcsme-2023-0151","url":null,"abstract":"Additive Manufacturing (AM) is considered an innovative technology to fabricate goods with green characteristics. In comparison to conventional manufacturing approaches, AM technologies have shown promising results in enhancing sustainability in production systems. Various research has been conducted to assess the environmental impacts of AM based on the well-known Life Cycle Assessment (LCA) framework. However, this approach requires intensive domain knowledge to build the environmental impact model and interpret the findings. This knowledge barrier may cause delays and challenges in the selection of the optimal design and process parameters for additively manufactured parts. Such challenges can be particularly prevalent during the early product design and planning stages. As such, the research community demands an automated LCA tool to support AM toward elevated sustainability. To achieve this ambitious goal, this paper particularly investi-gates the fundamental question – \"What are the key influential parameters that pose an impact on the environmental sustainability of AM?\". Thus, this paper proposes a methodological framework for identifying the key influential parameters for AM. The framework was demonstrated by taking the Fused Filament Fabrication process as a case study. Through instantiating various parts within the proposed framework and conducting LCA on over 200 AM instances, followed by correlation analysis, the key influential parameters were identified. Consequently, a data-driven predictive sustainability assessment and optimization framework was developed by integrating the identified influential features.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":"2006 15","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139239405","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

On modelling the cutting forces and impact resistance of honed milling tools 珩磨铣刀的切削力和抗冲击性建模

IF 0.9 4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-11-15 DOI: 10.1139/tcsme-2023-0066

C. Hopkins, Tim Clarke, Nam Nguyen, N. Z. Yussefian, Ali Hosseini

{"title":"On modelling the cutting forces and impact resistance of honed milling tools","authors":"C. Hopkins, Tim Clarke, Nam Nguyen, N. Z. Yussefian, Ali Hosseini","doi":"10.1139/tcsme-2023-0066","DOIUrl":"https://doi.org/10.1139/tcsme-2023-0066","url":null,"abstract":"In milling operations, cutting tools are subjected to cyclic thermal and mechanical loads due to their intermittent engagement with the workpiece. As a result, they commonly fail due to edge chipping and thermal cracking, among which the former is directly related to the impact at the entry or exit, respectively, in downmilling or upmilling where the chip thickness is maximum. Among the many design factors that affect the impact resistance of milling tools, cutting-edge radius is one of the most important; however, it is often omitted in classic force models. In this paper, a force model that accounts for the edge radius was developed to predict the milling forces. Five sets of milling inserts with custom-made edge radii ranging from 25 to 45 µm were produced and tested. Test results were used to validate the force model and capture the effects of edge radius on the impact resistance of the prepared inserts. Results showed that increasing the edge radius initially improved the impact resistance and increased the tool life. However, increasing the edge radius beyond a certain threshold was proven to be detrimental since it made the tool blunt and drastically increased the cutting forces.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":"25 5","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139275552","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 VELOCITY AND SPREADING CHARACTERISTICS OF NON-CIRCULAR TURBULENT JETS AT DIFFERENT REYNOLDS NUMBERS 不同雷诺数下非圆形湍流射流速度与扩散特性的数值研究

4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-11-03 DOI: 10.1139/tcsme-2023-0028

Sanjay Kumar, Muhammad Bilal, Saoud Sarwar, Zaheer Ahmed, Mujeeb Iqbal Soomro, Awais Junejo, Abdul Fatah Abbasi, Khanji Harijan

{"title":"NUMERICAL INVESTIGATION OF VELOCITY AND SPREADING CHARACTERISTICS OF NON-CIRCULAR TURBULENT JETS AT DIFFERENT REYNOLDS NUMBERS","authors":"Sanjay Kumar, Muhammad Bilal, Saoud Sarwar, Zaheer Ahmed, Mujeeb Iqbal Soomro, Awais Junejo, Abdul Fatah Abbasi, Khanji Harijan","doi":"10.1139/tcsme-2023-0028","DOIUrl":"https://doi.org/10.1139/tcsme-2023-0028","url":null,"abstract":"The flow field characteristics of non-circular turbulent jets are investigated numerically. A steady numerical simulation is conducted using the k-ε turbulence model in Ansys Fluent software. A hotwire anemometer is utilized to collect velocity data along the jet centerline for velocity validation. The jet exit Reynolds numbers are varied from 200 to 5000, covering both laminar and turbulent regimes. The mean flow field characteristics, such as mean velocity, turbulent intensity, velocity decay, and half jet spread width, are examined. The simulated results depict that mean velocity profile decay reveals a universal decay pattern, and the lateral velocity distribution show top-hat like velocity profile in the near field. It significantly changed into peak-shaped and parabolic-shaped at a far downstream distance. The turbulent intensity profile reveals that shear layer growth begins near the jet exits, and entrainment becomes strong with the Reynold number. The potential core region increases with Reynolds numbers. The jet spread width shows a linear increment with the jet exit Reynolds number. The presented numerical results agree well with the measured experimental results and are consistent with published data.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":"75 S38","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135818131","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

Dimensional synthesis of motion generation of a spherical four-bar mechanism 球面四杆机构运动生成的尺寸综合

4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-11-03 DOI: 10.1139/tcsme-2023-0067

Wenrui Liu, Haotian Si, Cong Wang, Jianwei Sun, Tao Qin

{"title":"Dimensional synthesis of motion generation of a spherical four-bar mechanism","authors":"Wenrui Liu, Haotian Si, Cong Wang, Jianwei Sun, Tao Qin","doi":"10.1139/tcsme-2023-0067","DOIUrl":"https://doi.org/10.1139/tcsme-2023-0067","url":null,"abstract":"A new objective function for optimizing spherical four-bar mechanisms for motion generation is presented. Rigid-body poses of a spherical four-bar mechanism in a standard installation position are investigated, and a normalization processing method is proposed. After processing the coupler points of the mechanism, the feature points generated are located on the circles. The formation principle of the feature coupler circles is analysed, and the internal relationship between the centre angle of the adjacent feature points on the feature coupler circles and the coupler angle of the spherical four-bar mechanism is determined. An input angle determination method is proposed for the spherical four-bar mechanism in a general installation position. An objective function is then established to optimize the basic dimensional types, relative input angles and installation position parameters of the desired spherical four-bar mechanism. The proposed method is applicable to both prescribed timing and unprescribed timing problems. Notably, the dimension of the optimization variables is only eight, which is exceptionally low for multiple position motion generation without prescribed timing; therefore, the global optimal solution is more easily obtained. The optimization process is carried out by the genetic algorithm. The feasibility and effectiveness of our proposed method are demonstrated by examples.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":"91 S81","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135818675","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

On the re-evaluation of the clamped members stiffness of bolted joints 螺栓连接夹紧构件刚度的再评价

4区工程技术

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-11-02 DOI: 10.1139/tcsme-2023-0092

Rashique Iftekhar Rousseau, Hakim bouzid, Zijian Zhao

{"title":"On the re-evaluation of the clamped members stiffness of bolted joints","authors":"Rashique Iftekhar Rousseau, Hakim bouzid, Zijian Zhao","doi":"10.1139/tcsme-2023-0092","DOIUrl":"https://doi.org/10.1139/tcsme-2023-0092","url":null,"abstract":"To address structural integrity of bolted joints and verify their capacity to withstand external loads and relaxation resulting from thermal expansion difference and creep, proper evaluation of the axial stiffnesses of bolt and clamped members are of vital importance. A number of finite element (FE) based methods are available for the calculation of the stiffnesses of joint elements, most of which rely on the displacement of arbitrarily selected nodes that has led to the improper evaluation of joint stiffness values. In this paper, the stiffness of clamped members is evaluated by a simple finite element methodology using a known bolt stiffness evaluated separately. Two load cases, one based on the application of external force (mechanical loading) and the other on temperature (thermal loading) are conducted using the FE method to validate the obtained results. The proposed methodology is also compared with other FE models and analytical methods obtained from literature. The new technique is based on an axisymmetric FE modeling and is applied to bolted joints with bolts ranging from M6 to M36 having various grip lengths. Finally, the stiffnesses of the bolt and clamped members can be determined accurately and a general formula is proposed to evaluate the stiffness of clamped members.","PeriodicalId":23285,"journal":{"name":"Transactions of The Canadian Society for Mechanical Engineering","volume":"213 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135876186","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