@article{MTMT:3267843, title = {Molecular Dynamics Model of Nano-metric Peripheral Grinding}, url = {https://m2.mtmt.hu/api/publication/3267843}, author = {Karkalos, Nikolaos E and Markopoulos, Angelos P and Kundrák, János}, doi = {10.1016/j.procir.2017.03.189}, journal-iso = {PROCEDIA CIRP}, journal = {PROCEDIA CIRP}, volume = {58}, unique-id = {3267843}, abstract = {Ultra high precision grinding can render sub-micrometric surface finish of workpieces in an effective way. Accordingly, grinding in the nano-level can be used to produce surface finish of nanometric level or removal of several atomic layers of the substrate. As direct measurements in this scale are either expensive or impossible to be conducted, appropriate simulation models need to be created in order to study the underlying mechanisms of nanometric machining processes. Molecular Dynamics (MD) method is a widely accepted simulation method for this purpose, as it enables direct observation of the process at atomistic level. In this study, an MD simulation of nanometric peripheral grinding with two single crystal diamond grains is conducted with a view to determine cutting forces and temperatures as well as surface integrity and subsurface damage in the workpiece. Using this model, favourable cutting conditions for this process will be able to be determined.}, keywords = {molecular dynamics; surface integrity; Precision grinding; nanometric material removal}, year = {2017}, eissn = {2212-8271}, pages = {281-286} } @article{MTMT:2909821, title = {Surface roughness modelling in face milling}, url = {https://m2.mtmt.hu/api/publication/2909821}, author = {Felhő, Csaba and Bernhard, Karpuschewski and Kundrák, János}, doi = {10.1016/j.procir.2015.03.075}, journal-iso = {PROCEDIA CIRP}, journal = {PROCEDIA CIRP}, volume = {31}, unique-id = {2909821}, year = {2015}, eissn = {2212-8271}, pages = {136-141}, orcid-numbers = {Felhő, Csaba/0000-0003-0997-666X} } @article{MTMT:2911255, title = {Conception of materials data collection for numerical modelling of technological processes}, url = {https://m2.mtmt.hu/api/publication/2911255}, author = {Koritárné Fótos, Réka and Koncsik, Zsuzsanna and Lukács, János}, journal-iso = {PROD PROC SYST (MISKOLC)}, journal = {PRODUCTION PROCESSES AND SYSTEMS}, volume = {6}, unique-id = {2911255}, issn = {1786-7983}, year = {2012}, pages = {107-114}, orcid-numbers = {Koncsik, Zsuzsanna/0000-0002-5086-9068} } @book{MTMT:2428401, title = {Szemelvények a mérnöki szerkezetek integritása témaköréből}, url = {https://m2.mtmt.hu/api/publication/2428401}, isbn = {9789633580004}, author = {Lukács, János and Nagy, Gyula and Harmati, I and Koritárné Fótos, Réka and Koncsik, Zsuzsanna}, editor = {Lukács, János}, publisher = {University of Miskolc}, unique-id = {2428401}, year = {2012}, orcid-numbers = {Nagy, Gyula/0000-0002-6592-4795; Koncsik, Zsuzsanna/0000-0002-5086-9068} } @article{MTMT:1248263, title = {Chatter stability of milling in frequency and discrete time domain}, url = {https://m2.mtmt.hu/api/publication/1248263}, author = {Altintas, Y and Stépán, Gábor and Merdol, D and Dombóvári, Zoltán}, doi = {10.1016/j.cirpj.2008.06.003}, journal-iso = {CIRP J MANUF SCI TECHNOL}, journal = {CIRP JOURNAL OF MANUFACTURING SCIENCE AND TECHNOLOGY}, volume = {1}, unique-id = {1248263}, issn = {1755-5817}, abstract = {Chatter stability of milling operations has been gaining \nsignificant attention with a view to improving the material \nremoval rates in high speed machining of aluminum alloys and \nlow speed milling of difficult to cut, thermal resistant \nalloys. This paper presents frequency and discrete time domain \nchatter stability laws for milling operations in a unified \nmanner. The time periodic dynamics of the milling process are \nmodelled. By averaging time varying directional factors at \ncutter pitch intervals, the stability lobes are solved directly \nand analytically. When the process is highly intermittent, \nwhich occurs at high speeds and low radial depth of cuts, the \nstability lobes are more accurately solved either by taking \nhigher harmonics of directional factors in frequency domain, or \nby using semi-discretization method. This paper compares the \nstability solutions against the numerical solutions and \nexperiments, and provides comprehensive mathematical details of \nboth fundamental stability solutions. \n \n \n \n \n \n \n \n \n}, year = {2008}, eissn = {1755-5817}, pages = {35-44}, orcid-numbers = {Stépán, Gábor/0000-0003-0309-2409; Dombóvári, Zoltán/0000-0003-2591-3220} } @article{MTMT:1148734, title = {Multiple chatter frequencies in milling processes}, url = {https://m2.mtmt.hu/api/publication/1148734}, author = {Insperger, Tamás and Stépán, Gábor and Bayly, PV and Mann, BP}, doi = {10.1016/S0022-460X(02)01131-8}, journal-iso = {J SOUND VIB}, journal = {JOURNAL OF SOUND AND VIBRATION}, volume = {262}, unique-id = {1148734}, issn = {0022-460X}, abstract = {Analytical and experimental identifications of the chatter frequencies in milling processes are presented. In the case of milling, there are several frequency sets arising from the vibration signals, as opposed to the single well-defined chatter frequency of the unstable turning process. Frequency diagrams are constructed analytically and attached to the stability charts of mechanical models of high-speed milling. The corresponding quasiperiodic solutions of the governing time-periodic delay-differential equations are also identified with some milling experiments in the case of highly intermittent cutting. (C) 2002 Elsevier Science Ltd. All rights reserved.}, year = {2003}, eissn = {1095-8568}, pages = {333-345}, orcid-numbers = {Insperger, Tamás/0000-0001-7518-9774; Stépán, Gábor/0000-0003-0309-2409} }