Mechanics & Industry最新文献_第10页

Predesign of a flexible multibody system excited by moving load using a mechatronic system approach 用机电系统方法对移动载荷激励下的柔性多体系统进行预设计

IF 1.2 4区工程技术

Mechanics & Industry Pub Date : 2020-01-01 DOI: 10.1051/meca/2020076

Ghazoi Hamza, M. Barkallah, M. Hammadi, J. Choley, A. Rivière, J. Louati, M. Haddar

{"title":"Predesign of a flexible multibody system excited by moving load using a mechatronic system approach","authors":"Ghazoi Hamza, M. Barkallah, M. Hammadi, J. Choley, A. Rivière, J. Louati, M. Haddar","doi":"10.1051/meca/2020076","DOIUrl":"https://doi.org/10.1051/meca/2020076","url":null,"abstract":"In this paper, a new analytical approach to object oriented modeling is presented for the predesign of a multibody system. We investigate the dynamic behavior of a system of interconnected components using the modeling language Modelica. In engineering, beam-masses are often used as design models. In fact, the considered system is composed of a flexible beam subjected to a moving load and supporting one or more translating elastic subsystems. Each subsystem is controlled by a vibration absorber and the structure is affected dynamically only through the moving character of the load. The problem of calculation of the dynamic response of this system is very important in many engineering applications such as in the predesign and analysis of a robotic portal systems, machine tools and bridge crane systems. The object oriented modeling approach will be presented to demonstrate the importance of this approach to parametric investigation. It will illustrate how subsystems from Modelica Standard Library can be connected to the developed structure in order to study the vibrational behavior of such a system. For validation purpose, results are compared with those reported in the literature.","PeriodicalId":49018,"journal":{"name":"Mechanics & Industry","volume":"45 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85196196","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

The impact of inlet flash evaporation conditions on erosion damage characteristics of coal gasification black water angle valve and prevention strategies 进口闪蒸条件对煤气化黑水角阀侵蚀破坏特性的影响及预防策略

IF 1.2 4区工程技术

Mechanics & Industry Pub Date : 2020-01-01 DOI: 10.1051/MECA/2020092

Xu Yan, Wang Wei, Ming-Hao You, Fan-Ding Li, Hao-zhe Jin

{"title":"The impact of inlet flash evaporation conditions on erosion damage characteristics of coal gasification black water angle valve and prevention strategies","authors":"Xu Yan, Wang Wei, Ming-Hao You, Fan-Ding Li, Hao-zhe Jin","doi":"10.1051/MECA/2020092","DOIUrl":"https://doi.org/10.1051/MECA/2020092","url":null,"abstract":"In view of the three-stage flash evaporation system of the coal gasification plant, a combination of theoretical analysis and numerical simulation was used to establish the erosion damage evaluation model in the black water angle valve. The influence of the inlet flash evaporation ratio on the inlet velocity, the outlet flash evaporation ratio and the outlet velocity of the low-pressure black water angle valve are systematically studied, the mechanism of erosion damage to the carbon steel valve body by the solid medium in black water was analyzed according to the micro-cutting theory. The results show that the inlet velocity w 1, the outlet flash evaporation ratio x 2, the outlet velocity w 2 of angle valve have linear correlation with the inlet flash evaporation ratio x 1.The upstream volume erosion ratio of the angle valve at the inlet flash ratio x 1 = 3 wt.% is 114 times as much as that at zero inlet flash ratio. Meanwhile, the downstream volume erosion ratio of the angle valve at x 1 = 3 wt.% is only 2.7 times as much as that at zero inlet flash ratio. The prevention strategies to reduce the erosion damage to black water angle valve are proposed by inhibiting the inlet flash evaporation ratio and reducing the inlet flow rate etc. This study is expected to provide guidance for the erosion resistance design and operation of the black water angle valve.","PeriodicalId":49018,"journal":{"name":"Mechanics & Industry","volume":"12 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86665451","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

Determination of erosion equation factors of AISI1020 by experimental data 用实验数据确定AISI1020侵蚀方程因子

IF 1.2 4区工程技术

Mechanics & Industry Pub Date : 2020-01-01 DOI: 10.1051/meca/2019087

Mehdi Akhondizadeh, Nader Afkhami

引用次数: 0

Topological approach for assessment of electromagnetic interferences to support mechatronic conceptual design 电磁干扰评估的拓扑方法支持机电一体化概念设计

IF 1.2 4区工程技术

Mechanics & Industry Pub Date : 2020-01-01 DOI: 10.1051/meca/2020080

Mouna Kharrat, O. Penas, Nourhen Abdeljabbar Kharrat, R. Plateaux, J. Choley, J. Louati, H. Trabelsi, M. Haddar

{"title":"Topological approach for assessment of electromagnetic interferences to support mechatronic conceptual design","authors":"Mouna Kharrat, O. Penas, Nourhen Abdeljabbar Kharrat, R. Plateaux, J. Choley, J. Louati, H. Trabelsi, M. Haddar","doi":"10.1051/meca/2020080","DOIUrl":"https://doi.org/10.1051/meca/2020080","url":null,"abstract":"The conceptual design is a crucial phase for the System Architects to evaluate 3D architecture concepts of mechatronic systems mainly with regard to the ElectroMagnetic Compatibility (EMC). Our research work deals with the combination of electromagnetic modeling and a topological approach to support the qualitative and quantitative ElectroMagnetic Interferences (EMI) evaluation process within the MBSE SAMOS approach as of the conceptual design. For a given interference, the analysis of topological models allows the qualitative identification of the existence of victims with their associated potential aggressors, based on the electrical schema of interacting components. Then, once the potential EMIs have been qualitatively identified, a quantitative evaluation can be performed based on the predefined electromagnetic and geometrical requirements, and on the analysis of the identified physical coupling law. Finally, this approach has been applied to the alien crosstalk occurring in an electrical vehicle powertrain, with a quantitative evaluation based on the two following methods: an analytical approach and Kron's approach.","PeriodicalId":49018,"journal":{"name":"Mechanics & Industry","volume":"531 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80176072","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

Dynamic characteristics for coal shearer cutting unit gearbox housing 采煤机截割装置齿轮箱的动态特性

IF 1.2 4区工程技术

Mechanics & Industry Pub Date : 2020-01-01 DOI: 10.1051/meca/2020008

R. Zhang, Yiming Zhang

{"title":"Dynamic characteristics for coal shearer cutting unit gearbox housing","authors":"R. Zhang, Yiming Zhang","doi":"10.1051/meca/2020008","DOIUrl":"https://doi.org/10.1051/meca/2020008","url":null,"abstract":"Long wall mining is most widely used in coal mining of China, and coal shearer is the most important machine due to its direct role in cutting coal. Nevertheless, coal mining enterprises are suffering from faults of coal shearer, especially cutting unit gearbox housing (CUGH). Published dynamic studies on CUGH have not considered the excitation caused by gear meshing and complete machine vibration. Due to the apparent lack of experimental validation of these published papers, the dynamic response of CUGH is not convincing. In this study, dynamic behavior of CUGH is investigated both theoretically and experimentally for finding out failure mechanism and improving reliability. Complete machine vibration and gear meshing vibration are two excitation sources for CUGH, and vibration is transferred via articulated holes and bearing holes. Hence, complete machine dynamics model is established for obtaining force on articulated holes. Dynamics model of gear transmission system is established for obtaining force on bearing holes. Stochastic cutting forces model is established as external load of complete machine dynamics model. Dynamics response is calculated by finite element model established by ANSYS. A measurement system to capture three-dimensional vibratory motions under realistic working conditions of coal mines is implemented by National Energy Mining Equipment Laboratory of China. Direct comparisons between predicted and measured results are presented to demonstrate the accuracy of the proposed model in predicting three-dimensional vibrations of CUGH. Maximum deformation and stress positions of CUGH are determined, and the excitation sources are investigated.","PeriodicalId":49018,"journal":{"name":"Mechanics & Industry","volume":"83 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90191786","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: 6

Kinematic SAMI : a new real-time multi-sensor data assimilation strategy for nonlinear modal identification 运动学SAMI:一种新的非线性模态识别实时多传感器数据同化策略

IF 1.2 4区工程技术

Mechanics & Industry Pub Date : 2020-01-01 DOI: 10.1051/meca/2020035

Adrien Goeller, J. Dion, R. L. Breton, Thierry Soriano

引用次数: 2

Achieving uniform thread load distribution in bolted joints using different pitch values 在使用不同节距值的螺栓连接中实现均匀的螺纹载荷分布

IF 1.2 4区工程技术

Mechanics & Industry Pub Date : 2020-01-01 DOI: 10.1051/meca/2020090

Ibai Coria, M. Abasolo, Aitor Gutiérrez, J. Aguirrebeitia

引用次数: 4

Effect of bipropellant combustion products on the rocket nozzle design 二元推进剂燃烧产物对火箭喷管设计的影响

IF 1.2 4区工程技术

Mechanics & Industry Pub Date : 2020-01-01 DOI: 10.1051/meca/2020064

O. Abada, A. Abada, Ahmed Abdallah El-Hirtsi

引用次数: 2

Effects of pre-corrosion, water and detergent contamination on rolling contact fatigue 预腐蚀、水和洗涤剂污染对滚动接触疲劳的影响

IF 1.2 4区工程技术

Mechanics & Industry Pub Date : 2020-01-01 DOI: 10.1051/meca/2020023

W. Wen, Xiaopeng Hao, Xiaomeng Chen, B. Han, Xiaobo Zhou

引用次数: 1

Designing and loaded tooth contact analysis of an Archimedean worm gear drive focusing for the connecting teeth of the worm wheel by loaded torques 阿基米德蜗轮传动的设计与加载齿接触分析，通过加载力矩聚焦蜗轮连接齿

IF 1.2 4区工程技术

Mechanics & Industry Pub Date : 2020-01-01 DOI: 10.1051/meca/2020024

Sándor Bodzás

{"title":"Designing and loaded tooth contact analysis of an Archimedean worm gear drive focusing for the connecting teeth of the worm wheel by loaded torques","authors":"Sándor Bodzás","doi":"10.1051/meca/2020024","DOIUrl":"https://doi.org/10.1051/meca/2020024","url":null,"abstract":"The cylindrical worm gear drives are widely used in different mechanical construction such as in the vehicle industry, the robotics, the medical appliances etc. The main property of them is the perpendicular and space bypass axes arrangement. Quite high transmission ratio could be achieved because of the high number of teeth of the worm-wheel and a little number of threads of the worm. More teeth are connected on the worm-wheel at the same time that is why higher loads and power could be transferred. In this research an Archimedean type cylindrical worm gear drive was designed. After the determination of the geometric parameters the computer-aided models were created for the LTCA analysis. Knowing of the kinematic motions of the elements the contact points of the wrapping surfaces could be determined by mathematical way. The necessary coordinate system's arrangements and matrixes were also determined. Different torques were applied during the LTCA. The changing of the distribution of the normal stress and normal deformation into different directions was followed on each connecting tooth of the worm-wheel by the torques. Based on the results consequences were determined by the created diagrams which contain the torques and the analysed mechanical parameter for each tooth.","PeriodicalId":49018,"journal":{"name":"Mechanics & Industry","volume":"65 1","pages":"405"},"PeriodicalIF":1.2,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76887905","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: 4