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Scientific Letters of Rzeszow University of Technology - Mechanics最新文献

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Analysis of the Friction Mechanisms of DC04 Steel Sheets in the Flat Strip Drawing Test DC04钢板平板拉深试验摩擦机理分析
Scientific Letters of Rzeszow University of Technology - Mechanics Pub Date : 1900-01-01 DOI: 10.7862/rm.2022.4
Marek Szewczyk, K. Szwajka
{"title":"Analysis of the Friction Mechanisms of DC04 Steel Sheets in the Flat Strip Drawing Test","authors":"Marek Szewczyk, K. Szwajka","doi":"10.7862/rm.2022.4","DOIUrl":"https://doi.org/10.7862/rm.2022.4","url":null,"abstract":"This article presents the use of a specially designed flat strip drawing tester in order to assess the change in surface topography of DC04 steel sheets. The flat strip drawing test simulates friction conditions in the sheet metal-blankholder interface during deep drawing processes. Experimental tests were carried out at various nominal pressures and in dry friction and lubricated conditions. Two widely available gear and engine oils were used in the study. It was found that, in the range of pressures investigated between 3 and 12 MPa, 80W-90 gear oil provided a greater reduction in the value of the coefficient of friction (COF) than 5W-30 engine oil. Gear oil reduced the COF by an average of about 13.4 [%]. The lubrication efficiency depends on the pressure values; the greater the pressure, the lower the lubrication efficiency. A lowering of the value of the main amplitude surface roughness parameters Sa and Sq was generally observed. SEM analysis showed that even under lubrication conditions there was intense flattening of the roughness asperities of the sheet metal.","PeriodicalId":288754,"journal":{"name":"Scientific Letters of Rzeszow University of Technology - Mechanics","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123071593","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
SELECTED PROPERTIES OF BIOCOMPOSITES ON THE BASIS OF PHBV WITH CELLULOSE FILLERS 纤维素填料PHBV生物复合材料的性能选择
Scientific Letters of Rzeszow University of Technology - Mechanics Pub Date : 1900-01-01 DOI: 10.7862/rm.2018.38
W. Frącz, G. Janowski
{"title":"SELECTED PROPERTIES OF BIOCOMPOSITES ON THE BASIS OF PHBV WITH CELLULOSE FILLERS","authors":"W. Frącz, G. Janowski","doi":"10.7862/rm.2018.38","DOIUrl":"https://doi.org/10.7862/rm.2018.38","url":null,"abstract":"","PeriodicalId":288754,"journal":{"name":"Scientific Letters of Rzeszow University of Technology - Mechanics","volume":"176 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121077238","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
Analiza rozkładu sił działających na ostrze fazownika sprężystego
Scientific Letters of Rzeszow University of Technology - Mechanics Pub Date : 1900-01-01 DOI: 10.7862/RM.2017.31
M. Kuzinovski, M. Tomov, P. Cichosz, P. Karolczak, M. Kowalski, Marek Kołodziej, H. Skowronek, K. Waszczuk
{"title":"Analiza rozkładu sił działających na ostrze fazownika sprężystego","authors":"M. Kuzinovski, M. Tomov, P. Cichosz, P. Karolczak, M. Kowalski, Marek Kołodziej, H. Skowronek, K. Waszczuk","doi":"10.7862/RM.2017.31","DOIUrl":"https://doi.org/10.7862/RM.2017.31","url":null,"abstract":"","PeriodicalId":288754,"journal":{"name":"Scientific Letters of Rzeszow University of Technology - Mechanics","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127159766","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
Modelowanie numeryczne odazotowania spalin metodą SCR
Scientific Letters of Rzeszow University of Technology - Mechanics Pub Date : 1900-01-01 DOI: 10.7862/RM.2014.17
T. Chmielniak, Paweł Pilarz
{"title":"Modelowanie numeryczne odazotowania spalin metodą SCR","authors":"T. Chmielniak, Paweł Pilarz","doi":"10.7862/RM.2014.17","DOIUrl":"https://doi.org/10.7862/RM.2014.17","url":null,"abstract":"","PeriodicalId":288754,"journal":{"name":"Scientific Letters of Rzeszow University of Technology - Mechanics","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127380494","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
Problemy implementacji systemu sterowania lotem na platformę systemu operacyjnego czasu rzeczywistego VxWorks
Scientific Letters of Rzeszow University of Technology - Mechanics Pub Date : 1900-01-01 DOI: 10.7862/RM.2013.46
S. Samolej, T. Rogalski, D. Nowak
{"title":"Problemy implementacji systemu sterowania lotem na platformę systemu operacyjnego czasu rzeczywistego VxWorks","authors":"S. Samolej, T. Rogalski, D. Nowak","doi":"10.7862/RM.2013.46","DOIUrl":"https://doi.org/10.7862/RM.2013.46","url":null,"abstract":"","PeriodicalId":288754,"journal":{"name":"Scientific Letters of Rzeszow University of Technology - Mechanics","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125124717","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
Operational research of ground heat pump and passive air conditioning 地源热泵与被动式空调运筹学研究
Scientific Letters of Rzeszow University of Technology - Mechanics Pub Date : 1900-01-01 DOI: 10.7862/RM.2018.12
P. Gil, R. Gałek, K. Kiedrzyński, Adrian Kmieciński
{"title":"Operational research of ground heat pump and passive air conditioning","authors":"P. Gil, R. Gałek, K. Kiedrzyński, Adrian Kmieciński","doi":"10.7862/RM.2018.12","DOIUrl":"https://doi.org/10.7862/RM.2018.12","url":null,"abstract":"This article presents a passive air conditioning sy stem using the lower source of the ground heat pump. Passive air conditioning uses the natural cold accumulated in the ground especially in the summer season. A hydraulic diagra m and the principle of passive air conditioning were presented in the text . The purpose of the measurement was to determine the cooling power, the characteris tic temperatures and the soil temperature distribution at the depth of 2 meters at t he ground excavated site of the spiral ground heat exchanger. Annual temperature distribut ions in the ground which directly affect annular cooling power were presented. Advantages and disadvantages of passive air conditioning have also been presente d.","PeriodicalId":288754,"journal":{"name":"Scientific Letters of Rzeszow University of Technology - Mechanics","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125178970","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
SINGULARITY ROBUST TRAJECTORY GENERATOR FOR ROBOTIC MANIPULATOR BASED ON GENETIC ALGORITHM WITH DYNAMIC ENCODING OF SOLUTIONS 基于解动态编码遗传算法的机械臂奇异鲁棒轨迹生成器
Scientific Letters of Rzeszow University of Technology - Mechanics Pub Date : 1900-01-01 DOI: 10.7862/RM.2018.40
P. Gierlak
{"title":"SINGULARITY ROBUST TRAJECTORY GENERATOR FOR ROBOTIC MANIPULATOR BASED ON GENETIC ALGORITHM WITH DYNAMIC ENCODING OF SOLUTIONS","authors":"P. Gierlak","doi":"10.7862/RM.2018.40","DOIUrl":"https://doi.org/10.7862/RM.2018.40","url":null,"abstract":"In this paper a singularity robust trajectory gener ator for robotic manipulators is presented. The generator contains the procedure of sol ving the inverse kinematics problem. This issue is defined as an optimization probl em, where a genetic algorithm is used for optimizing the fitness function. In order to avoid singularity problem, the generator is based on the direct kinematics problem . The trajectory generator allows to obtain generalized coordinates, velocities and a ccelerations. Simulation results show that the procedure generates a trajectory of m anipulator even in kinematics singularities.","PeriodicalId":288754,"journal":{"name":"Scientific Letters of Rzeszow University of Technology - Mechanics","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125930972","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
Badania porównawcze wybranych właściwości ostrzy skrawających z kutych, walcowanych i spiekanych stali szybkotnących
Scientific Letters of Rzeszow University of Technology - Mechanics Pub Date : 1900-01-01 DOI: 10.7862/RM.2017.30
M. Kupczyk, Jędrzej Komolka, M. Jenek
{"title":"Badania porównawcze wybranych właściwości ostrzy skrawających z kutych, walcowanych i spiekanych stali szybkotnących","authors":"M. Kupczyk, Jędrzej Komolka, M. Jenek","doi":"10.7862/RM.2017.30","DOIUrl":"https://doi.org/10.7862/RM.2017.30","url":null,"abstract":"","PeriodicalId":288754,"journal":{"name":"Scientific Letters of Rzeszow University of Technology - Mechanics","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125955361","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
Analiza wydajności chłodniczej kaskadowego obiegu skraplania etylenu i stanu izolacji zbiorników ładunkowych podczas transportu ładunku na gazowcu LPG o pojemności 22500 m3
Scientific Letters of Rzeszow University of Technology - Mechanics Pub Date : 1900-01-01 DOI: 10.7862/RM.2014.25
D. Nanowski
{"title":"Analiza wydajności chłodniczej kaskadowego obiegu skraplania etylenu i stanu izolacji zbiorników ładunkowych podczas transportu ładunku na gazowcu LPG o pojemności 22500 m3","authors":"D. Nanowski","doi":"10.7862/RM.2014.25","DOIUrl":"https://doi.org/10.7862/RM.2014.25","url":null,"abstract":"","PeriodicalId":288754,"journal":{"name":"Scientific Letters of Rzeszow University of Technology - Mechanics","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125444312","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: 3
Koncepcja stanowiska do pomiarów współczynników wymiany masy/ciepła w mini-wymiennikach
Scientific Letters of Rzeszow University of Technology - Mechanics Pub Date : 1900-01-01 DOI: 10.7862/RM.2014.38
S. Grosicki, R. Smusz, Joanna Wilk
{"title":"Koncepcja stanowiska do pomiarów współczynników wymiany masy/ciepła w mini-wymiennikach","authors":"S. Grosicki, R. Smusz, Joanna Wilk","doi":"10.7862/RM.2014.38","DOIUrl":"https://doi.org/10.7862/RM.2014.38","url":null,"abstract":"","PeriodicalId":288754,"journal":{"name":"Scientific Letters of Rzeszow University of Technology - Mechanics","volume":"156 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128750207","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
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