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Assessment of exploitation properties of cast aluminium alloys on the basis of creep and LCF investigations 基于蠕变和LCF研究的铸铝合金开发性能评价
Archive of Mechanical Engineering Pub Date : 2023-11-06 DOI: 10.24425/ame.2009.132110
L. Dietrich, A. Rutecka, Z. L. Kowalewski
{"title":"Assessment of exploitation properties of cast aluminium alloys on the basis of creep and LCF investigations","authors":"L. Dietrich, A. Rutecka, Z. L. Kowalewski","doi":"10.24425/ame.2009.132110","DOIUrl":"https://doi.org/10.24425/ame.2009.132110","url":null,"abstract":"In spite of the great progress in modelling of material behaviour achieved during last decade, there is still a necessity to determine a model which would describe complex material processes more accurately. Among many problems to be solved, a proper model selection and its verification on the basis of experimental data seems to be the most important nowadays. Since the creep and fatigue mechanisms differ from each other, it is important to perform experiment on both kinds of mechanisms to be able to verify models. The paper presents the creep and LCF results of the AlSi8Cu3 and AlSi7MgCu0.5 cast aluminium alloys. For both materials, two levels of porosity were considered. Low porosity material (melt) was degassed during production to achieve the density index less than 3%. The high porosity material was not degassed in order to enlarge the density index up to a value higher than 6%. Up to now, many efforts are made to carry out investigations whose main objective is to find such a parameter, which would allow for describing a dam-","PeriodicalId":45083,"journal":{"name":"Archive of Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135544906","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: 1
Numerical analysis on the influence of suspended equipment on the ride comfort in railway vehicles 悬挂装置对轨道车辆平顺性影响的数值分析
Archive of Mechanical Engineering Pub Date : 2023-11-06 DOI: 10.24425/ame.2018.125438
M. Dumitriu
{"title":"Numerical analysis on the influence of suspended equipment on the ride comfort in railway vehicles","authors":"M. Dumitriu","doi":"10.24425/ame.2018.125438","DOIUrl":"https://doi.org/10.24425/ame.2018.125438","url":null,"abstract":"To study the impact of suspended equipment on the ride comfort in a railway vehicle, a rigid flexible general model of such a vehicle is required. The numerical simulations is based on two different models, derived from the general model of the vehicle, namely a reference model of a vehicle with no equipment, and another model with six suspended elements of equipment mounted in various positions along the carbody. The objective of this paper arises from the observation that the literature does not contain any study that highlights the change in the ride comfort resulting exclusively due to the influence of equipment. The influence of the suspended equipment on the ride comfort is determined by comparing the ride comfort indices calculated in the carbody reference points, at the centre and above the two bogies, for a model with six elements of equipment and a model of the vehicle with no equipment.","PeriodicalId":45083,"journal":{"name":"Archive of Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135545881","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: 6
Effect of surface roughness on steady performance of hydrostatic thrust bearings: Rabinowitsch fluids 表面粗糙度对静压推力轴承稳定性能的影响:Rabinowitsch流体
Archive of Mechanical Engineering Pub Date : 2023-11-06 DOI: 10.24425/ame.2021.137045
Udaya P. Singh
{"title":"Effect of surface roughness on steady performance of hydrostatic thrust bearings: Rabinowitsch fluids","authors":"Udaya P. Singh","doi":"10.24425/ame.2021.137045","DOIUrl":"https://doi.org/10.24425/ame.2021.137045","url":null,"abstract":"The present theoretical study is concerned with the analysis of surface roughness effects on the steady state performance of stepped circular hydrostatic thrust bearings lubricated with non-Newtonian Rabinowitsch fluids. To take the effects of surface roughness into account, Christensen theory of rough surface has been adopted. Expression for pressure gradient has been derived by means of energy integral approach. Results for film pressure, load carrying capacity and lubricant flow rate has been plotted and analysed on the basis of numerical results. Significant variations in the theoretical results of these properties have been observed.","PeriodicalId":45083,"journal":{"name":"Archive of Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135584137","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
Application of comparative design study in the development of preservation encasements for historical documents 比较设计研究在历史文献保护地开发中的应用
Archive of Mechanical Engineering Pub Date : 2023-11-06 DOI: 10.24425/ame.2021.138394
Alejandro C. Ramirez-Reivich, Ma. Pilar Corona-Lira, Diego A. Zamora-Garcia, Anahí Velazquez-Silva, Vicente Borja
{"title":"Application of comparative design study in the development of preservation encasements for historical documents","authors":"Alejandro C. Ramirez-Reivich, Ma. Pilar Corona-Lira, Diego A. Zamora-Garcia, Anahí Velazquez-Silva, Vicente Borja","doi":"10.24425/ame.2021.138394","DOIUrl":"https://doi.org/10.24425/ame.2021.138394","url":null,"abstract":"for The preservation of historical documents is a task that requires a multidisciplinary team. Mechanical engineering can make valuable contributions. Historical documents made of paper have unique characteristics that must be considered for their preservation and exhibition. Specially designed encasements have emerged as a solution to meet these requirements. In the present research, a comparative design study was carried out. The study comprises identifying the main functions of the encasements. Subsequently, it is analyzed how the capsules that appear in the literature have solved these functions. With the information obtained, three new encasements were designed for historical documents in Mexico. From the results and design experiences, some insights and design principles were obtained; these can be universally applied.","PeriodicalId":45083,"journal":{"name":"Archive of Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135584606","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
Stress and deformation states in single-coil inductors used for pipe calibration by means of electrodynamic method 用电动力学方法标定管道用单线圈电感的应力和变形状态
Archive of Mechanical Engineering Pub Date : 2023-11-06 DOI: 10.24425/ame.2007.131562
J. Bednarczyk
{"title":"Stress and deformation states in single-coil inductors used for pipe calibration by means of electrodynamic method","authors":"J. Bednarczyk","doi":"10.24425/ame.2007.131562","DOIUrl":"https://doi.org/10.24425/ame.2007.131562","url":null,"abstract":"The article presents results of tests performed at the AGH-University of Science and Technology in Cracow on strength of single-coil inductors used as tools in electrodynamic machining of pipes. The character of volumetric Lorentz forces acting on coils of compressing and expanding inductors was discussed, and numerically determined distributions of stresses and displacements created in coils under the impact of these forces were presented. The problems presented are relevant when designing durable inductors intended for industrial applications.","PeriodicalId":45083,"journal":{"name":"Archive of Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135724056","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
Wheelchair mechanism for negotiating obstacles 轮椅机构，用于越过障碍
Archive of Mechanical Engineering Pub Date : 2023-11-06 DOI: 10.24425/ame.2009.132100
J. Bałchanowski, J. Szrek, S. Wudarczyk
{"title":"Wheelchair mechanism for negotiating obstacles","authors":"J. Bałchanowski, J. Szrek, S. Wudarczyk","doi":"10.24425/ame.2009.132100","DOIUrl":"https://doi.org/10.24425/ame.2009.132100","url":null,"abstract":"Moving with the wheelchair can be a serious problem, especially when the obstacle occurs on its way. An alternative solution would be to equip the wheelchair with appropriate mechanical device, thanks to that it becomes possible to overcome barriers such as kerbs or doorsteps. In this paper, the authors present an idea of mechanism overcoming barriers by the wheelchair. Type and geometrical synthesis have been presented. The mechanism is modelled in a multibody computer analysis system and sample simulation research results are reported.","PeriodicalId":45083,"journal":{"name":"Archive of Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135724058","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: 2
Kinematic model for forming dough into cylindrical shapes 面团成形成圆柱形的运动学模型
Archive of Mechanical Engineering Pub Date : 2023-11-06 DOI: 10.24425/ame.2007.131559
F. Chwarścianek
{"title":"Kinematic model for forming dough into cylindrical shapes","authors":"F. Chwarścianek","doi":"10.24425/ame.2007.131559","DOIUrl":"https://doi.org/10.24425/ame.2007.131559","url":null,"abstract":"","PeriodicalId":45083,"journal":{"name":"Archive of Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135724061","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
Coupling experiment and numerical analysis in the study of post-buckling response of thin-walled structures 薄壁结构屈曲后响应研究中的耦合试验与数值分析
Archive of Mechanical Engineering Pub Date : 2023-11-06 DOI: 10.24425/ame.2008.131631
T. Kopecki
{"title":"Coupling experiment and numerical analysis in the study of post-buckling response of thin-walled structures","authors":"T. Kopecki","doi":"10.24425/ame.2008.131631","DOIUrl":"https://doi.org/10.24425/ame.2008.131631","url":null,"abstract":"The paper presents the methodology that makes it possible to evaluate computational model and introduce current corrections to it. The methodology ensures proper interpretation of nonlinear results of numerical analyses of thin-walled structures. The suggested methodology is based on carrying out, in parallel to nonlinear numerical analysis, experimental research on some selected crucial zones of load-carrying structures. Attention is drawn to the determinants concerning the perfor-mance of an adequate experiment. The author points out on indicating the role of model tests as a fast and economically justified research instruments practicable when designing thin-walled load-carrying structures. The presented considerations are illustrated by an example of a structure whose geometrical complexity and ranges of deformation are characteristic for modern solutions applied in the load-carrying structures of airframes. As the representative example, one selected the area of the load-carrying structure that contains an extensive cut-out, in which the highest levels and stress gradients occur in the conditions of torsion evoking the post-buckling states within the permissible loads. The stress distributions within these ranges of deformations were used as the basis for determining the fatigue life of the structure.","PeriodicalId":45083,"journal":{"name":"Archive of Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135724063","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
The influence of stabilization of load positioning in an offshore crane on taut-slack phenomenon in a rope 海上起重机载荷定位稳定化对绳索紧松现象的影响
Archive of Mechanical Engineering Pub Date : 2023-11-06 DOI: 10.24425/ame.2009.132102
A. Maczyński, S. Wojciech
{"title":"The influence of stabilization of load positioning in an offshore crane on taut-slack phenomenon in a rope","authors":"A. Maczyński, S. Wojciech","doi":"10.24425/ame.2009.132102","DOIUrl":"https://doi.org/10.24425/ame.2009.132102","url":null,"abstract":"The peculiarity of offshore cranes, i. e. cranes based on ships or drilling platforms, is not only a significant motion of their base, but also the taut-slack phenomenon. Under some circumstances a rope can temporarily go completely slack, while a moment later, the force in the rope can increase to nominal or even higher value. Periodic occurrence of such phenomena can be damaging to the supporting structure of the crane and its driver. In the paper, mathematical models of offshore cranes that allow for analysis of the taut-slack phenomenon are presented. Results of numerical calculations show that the method of load stabilization proposed by the authors in their earlier works can eliminate this problem.","PeriodicalId":45083,"journal":{"name":"Archive of Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135544656","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: 1
Application of a hydraulic–linkage mechanism to balance the excavating equipment in heavy machines 液压连杆机构在重型机械开挖设备平衡中的应用
Archive of Mechanical Engineering Pub Date : 2023-11-06 DOI: 10.24425/ame.2008.131625
G. Tora
{"title":"Application of a hydraulic–linkage mechanism to balance the excavating equipment in heavy machines","authors":"G. Tora","doi":"10.24425/ame.2008.131625","DOIUrl":"https://doi.org/10.24425/ame.2008.131625","url":null,"abstract":"The author suggests that a mobile counterweight mechanism could be introduced to the excavator structure for coupling the hydraulic system with the excavating equipment. It is shown that the mobile counterweight mechanism reduces power demand, at the same time improving stability of the excavator.","PeriodicalId":45083,"journal":{"name":"Archive of Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135544671","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
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