Applied Mechanics and Materials最新文献_第2页

Finite Element Analysis of Solid and Hollow Roller Bearings to Predict the Influence of Contact Factors on Cage Slip 对实心和空心滚子轴承进行有限元分析以预测接触因素对保持架滑移的影响

Applied Mechanics and Materials Pub Date : 2024-03-05 DOI: 10.4028/p-l4po7c

Selvaraj Arthanari, Chandru Manivannan, Senthilkumar Palanisamy, Parandaman Ponnan

{"title":"Finite Element Analysis of Solid and Hollow Roller Bearings to Predict the Influence of Contact Factors on Cage Slip","authors":"Selvaraj Arthanari, Chandru Manivannan, Senthilkumar Palanisamy, Parandaman Ponnan","doi":"10.4028/p-l4po7c","DOIUrl":"https://doi.org/10.4028/p-l4po7c","url":null,"abstract":"This study examines the influence of contact factors such as bearing deformation, contact width and contact pressure on cage slide in cylindrical roller bearings. A cylindrical shaped roller bearing test setup is designed in order to determine the operating speed of bearing components under varying working circumstances. Solid and hollow roller bearings are analyzed using finite element technique, and the contact parameters are obtained. The cage slip obtained by experimental work is correlated with the contact parameters of hollow and solid shaped roller bearings. The specific load acting on solid rollers at various angular positions and the corresponding bearing deflection are obtained by FEA and the bearing run out is estimated. A new methodology is developed for deriving the contact mechanics of hollow roller to predict contact pressure and contact width from the roller deflection. The effect of hollowness on these parameters is derived and the corresponding cage slip is correlated. The effect of hollowness on bending and resultant stresses is obtained by numerical and analytical methods to correlate the stability of hollow roller bearing with the percentage of hollowness.","PeriodicalId":8039,"journal":{"name":"Applied Mechanics and Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140264026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Monitoring of Building Services Using Artificial Intelligence 利用人工智能监测楼宇服务

Applied Mechanics and Materials Pub Date : 2024-03-05 DOI: 10.4028/p-wy7sos

R.S. Sharath, P. Madhan

引用次数: 0

Characterization of Extruded Ultra-High Molecular Weight Polyethylene (UHMWPE) Filament Prepared for 3D Printing 为 3D 打印准备的挤出超高分子量聚乙烯 (UHMWPE) 纤维的表征

Applied Mechanics and Materials Pub Date : 2024-03-05 DOI: 10.4028/p-vnw3fs

B. Arifvianto, Candra Irawan, S. Suyitno, U. Salim, M. Mahardika

{"title":"Characterization of Extruded Ultra-High Molecular Weight Polyethylene (UHMWPE) Filament Prepared for 3D Printing","authors":"B. Arifvianto, Candra Irawan, S. Suyitno, U. Salim, M. Mahardika","doi":"10.4028/p-vnw3fs","DOIUrl":"https://doi.org/10.4028/p-vnw3fs","url":null,"abstract":"Fused filament fabrication (FFF) has nowadays become a popular 3-dimensional (3D) printing technique for the fabrication of polymeric components with customized and complex-shape design, including biomedical implants. However, the use of this technique is often constrained by the limited number of polymeric materials that can be printed to form the final product. Despite excellent wear resistance and widely used as the acetabular component of a joint prosthesis, ultra-high molecular weight polyethylene (UHMWPE) is among such the rarely-found filament material in the market. In this research, preliminary work to fabricate UHMWPE filament for the FFF processing is carried out by using extrusion. The influences of extrusion temperature, addition of polyethylene glycol (PEG), and rotational speed of the extruder’s screw on the physical, chemical, and mechanical properties of the extruded UHMWPE filament were determined. The result demonstrated no change in the chemical compositions of the filament due to the processing parameters applied, as noted from the FTIR spectra. The result of the tensile test showed that the highest tensile strength of UHMWPE filaments could reach 23.5 MPa.","PeriodicalId":8039,"journal":{"name":"Applied Mechanics and Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140397734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determination of Pedestrian LOS for Crosswalks at Intersections - A Case Study in Shivamogga City 确定十字路口人行横道的行人 LOS - Shivamogga 市案例研究

Applied Mechanics and Materials Pub Date : 2024-03-05 DOI: 10.4028/p-ituxj0

S.N. Neeraj, H. Sagar, U. Arun, M.S. Anusha

{"title":"Determination of Pedestrian LOS for Crosswalks at Intersections - A Case Study in Shivamogga City","authors":"S.N. Neeraj, H. Sagar, U. Arun, M.S. Anusha","doi":"10.4028/p-ituxj0","DOIUrl":"https://doi.org/10.4028/p-ituxj0","url":null,"abstract":"The main objective of this research is to identify the variables that affect the level of service (Los) of pedestrians at intersections both (signalized and unsignalized) in shivamogga city. Based on the experiences of the pedestrians at the individual in intersections. A walker’s questionnaire survey was done to gather level of service of pedestrians in terms of protection, comfort, and convenience for every crossing at signalized & unsignalized intersections. Additionally, a video graphic method was employed to scan each crosswalk at the chosen three signalized and two unsignalized intersections. Pedestrian crossing time, pedestrian waiting time, pedestrian holding area, roadway width, and crosswalk surface condition were the key variables taken into account for the construction of the model. For each crossing, a considerable number of pedestrian ratings were collected, these ratings were used as the dependent variables in the analysis. In order to estimate the pedestrian level of service for each intersection's crosswalk, a stepwise multiple linear regression analysis utilizing SPSS software is used to construct a pedestrian Los model.","PeriodicalId":8039,"journal":{"name":"Applied Mechanics and Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140263644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Finite Element Analysis of Castellated Beams with Different Web Openings 采用不同腹板开孔的浇注梁的有限元分析

Applied Mechanics and Materials Pub Date : 2024-03-05 DOI: 10.4028/p-feucb8

Priya A. Jacob, S. Aiswarya, Basil Johny, Blesson Joy, Tijo Chacko Thomas

引用次数: 0

Cellulose-Based Oil Palm Empty Fruit Bunch as an Alternative Filler for Latex Application: A Review 纤维素基油棕空果束作为乳胶应用的替代填料：综述

Applied Mechanics and Materials Pub Date : 2024-02-05 DOI: 10.4028/p-5dfzfb

Nuur Syuhada Dzulkafly, Anson Teh Tian Loke, A. Azura

引用次数: 0

Engineering Systems, Equipment and Robotics 工程系统、设备和机器人技术

Applied Mechanics and Materials Pub Date : 2024-02-05 DOI: 10.4028/b-5jmwpe

V. Jayakumar, K. A. Razak

引用次数: 0

Effect of Long Used Machine Oil on the Tribological Behaviour of Cu-Based Gear Materials 长期使用的机油对铜基齿轮材料摩擦学行为的影响

Applied Mechanics and Materials Pub Date : 2024-02-05 DOI: 10.4028/p-dgl3xv

Samiul Kaiser, Asif Ahmed, Raisa Sharmila, Mohammad Salim Kaiser

{"title":"Effect of Long Used Machine Oil on the Tribological Behaviour of Cu-Based Gear Materials","authors":"Samiul Kaiser, Asif Ahmed, Raisa Sharmila, Mohammad Salim Kaiser","doi":"10.4028/p-dgl3xv","DOIUrl":"https://doi.org/10.4028/p-dgl3xv","url":null,"abstract":"A wear test was performed under the long-used machine oil sliding environment on Cu-based alloys Al-bronze and α-brass. A pin-on-disc wear testing method was applied where normal pressure of 0.255 to 2.55 MPa and a constant sliding speed of 0.641 m/s were considered. For the assessment dry and fresh machine oil sliding environments were also conducted. The results from the experiment demonstrated that the wear rate and friction coefficient in dry sliding condition were much greater for their direct contact but lower under machine oil due to the reduced roughness by the sealing effect as oil forms a thin lubricating film between the contact surfaces. Used oil displayed some degree of higher wear rate along with friction coefficient due to heavy and harmful chemical compounds in it. Al-bronze performed the better wear properties with lower wear rate and coefficient of friction for all the environments as it achieved the strength through different intermetallic formations. In case of α-brass, it had little effect on wear characteristics. Examined by optical microscopy and SEM analysis, worn surfaces showed that Al-bronze improved wear resistance through mild and smooth abrasive grooves filled with oxides in dry sliding conditions. In case of oil sliding environment, smooth surfaces were created by the resistance of the oil film to the direct contact between the surfaces. Used oil sliding conditions reduced the surface smoothness of the Cu and Cu-based alloys for the presence of damaging chemical compounds.","PeriodicalId":8039,"journal":{"name":"Applied Mechanics and Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139804782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strategies on the Optimization of Thermoelectric Systems for Heat Transfer Applications: State of the Art Review 传热应用热电系统优化策略：最新技术综述

Applied Mechanics and Materials Pub Date : 2024-02-05 DOI: 10.4028/p-e8dsn5

Middela Mohith Venkatesh, B. Bakthavatchalam, Raghvendran Pala Raviramachandran, N. Shaik, Omar A. Hussein, Namdev Ashok Patil

引用次数: 0

Multi-Objective Optimization of a Three Degree-of-Freedom Translational Parallel Kinematic Machine with Coplanar Rails 带共面导轨的三自由度平移并联运动机械的多目标优化

Applied Mechanics and Materials Pub Date : 2024-02-05 DOI: 10.4028/p-m2sh5b

Joy Sukumar Patnala, A. B. K. Rao, Sanjay K Darvekar

{"title":"Multi-Objective Optimization of a Three Degree-of-Freedom Translational Parallel Kinematic Machine with Coplanar Rails","authors":"Joy Sukumar Patnala, A. B. K. Rao, Sanjay K Darvekar","doi":"10.4028/p-m2sh5b","DOIUrl":"https://doi.org/10.4028/p-m2sh5b","url":null,"abstract":"Several advancements in the field of parallel manipulators have taken place in recent days as they offer many advantages over serial manipulators in terms of accuracy, agility, stiffness, speed, etc. The Parallel Kinematic Machines (PKMs) with lower Degree of Freedom (DoF) joints are being explored for a variety of industrial applications and, in particular, machining applications as these offer more accuracy, high machining capability, and more stiffness. This research work focuses on the modeling, kinematics, workspace and dexterity analyses of a 3DoF Translational PKM having coplanar rails along the Cartesian axes: -X, +X, +Y. Actuation of sliders, independently along the respective rails, offer the tool platform pure translational motion. Fixed length links are used to connect the sliders and tool platform. The PKM under study is modeled in CATIA. Inverse kinematics and workspace analysis are carried out using the performance indices, namely, Workspace Volume Index (WVI) and Global Condition Index (GCI). Attempts are also made to find the optimal dimensions of the PKM through multi-objective optimization using Genetic Algorithms in MATLAB. The methodology presented is helpful to predict the PKM's performance capability while the results obtained are helpful for the development of a physical prototype necessary for further experimental investigations.","PeriodicalId":8039,"journal":{"name":"Applied Mechanics and Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139804347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0