cmms

Analysis of forming of aluminium and magnesium alloys in semi-solid state by advanced computer modelling Krzysztof Sołek1, Andrzej Białobrzeski2, Tomasz Stuczyński3, Zbigniew Mitura1 1Akademia Górniczo-Hutnicza, al. Mickiewicza 30, 30-059, Kraków, Polska. 2lnstytut Odlewnictwa, Zakopiańska 73, 30-418 Kraków, Polska. 3Instytut Metali Nieżelaznych, Oddział Metali Lekkich, Piłsudskiego 19, 32-050 Skawina, Polska. DOI: https://doi.org/10.7494/cmms.2003.3.0042 Abstract: “Metal forming in … Read more

Modelling and control of steelmaking converter process Marek Długosz, Wojciech Mitkowski, Wojciech Pietrzyk AGH University of Science and Technology. DOI: https://doi.org/10.7494/cmms.2003.2.0036 Abstract: The static model of steelmaking oxygen converter process, based on the artificial neural network approach, is presented in the paper . Remarks about the dynamic models and control of the process are presented, … Read more

Algorithm of a knowledge extraction from neural network on the example of hot-dip zinc coating process Sławomir Golak, Franciszek Grosman, Tadeusz Wieczorek Politechnika Śląska. DOI: https://doi.org/10.7494/cmms.2003.2.0037 Abstract: One of the major disadvantages of neural networks is that they can be considered as black boxes, since no satisfactory explanation of their work. A method for the … Read more

Application of artificial neural networks to determination of bending parameters of construction profiles Paweł Litwin, Feliks Stachowicz Politechnika Rzeszowska, Wydział Budowy Maszyn i Lotnictwa. DOI: https://doi.org/10.7494/cmms.2003.2.0038 Abstract: Determination of the bending moment and springback coefficient of thin-walled steel and aluminium alloy profiles, as a function of the bending curvature, was the main objective of the … Read more

An analysis of sequences of nonuniform images Zbigniew Rudnicki AGH University of Science and Technology. DOI: https://doi.org/10.7494/cmms.2003.2.0039 Abstract: The images of sliding trace and transfer film on steel counter sample disk were recorded during sliding of the samples of the two PTFE composites in pin-on-disk tribotester. The paper describes some methods of analysis of these … Read more

Method of interpretation of results of plane strain compression tests for evaluation of rheological parameters of materials Bernard Kowalski AGH University of Science and Technology. DOI: https://doi.org/10.7494/cmms.2003.2.0040 Abstract: Plane strain compression tests to investigate effects of heterogeneity of deformation for various initial specimen geometries have been carried out. Equations for correction of nominal strain and strain … Read more

Optimization of drawbead position in sheet metal forming Artur Marczewski, Włodzimierz Sosnowski Instytut Podstawowych Problemów Techniki PAN, Świętokrzyska 21, 00-049 Warszawa. DOI: https://doi.org/10.7494/cmms.2003.1.0032 Abstract: In this paper the optimization of drawbead position based on sensitivity analysis is considered. The finite element simulation of sheet metal forming process and ?exact?, direct differentiation method (DDM) of sensitivity … Read more

Modelling of the influence of crystallographic texture evolution on the plastic anisotropy development and strain localization in metal sheets Katarzyna Kowalczyk1, Wiktor Gambin2 1Instytut Podstawowych Problemów Techniki PAN, Warszawa. 2Wydział Mechatroniki Politechniki Warszawskiej, Warszawa. DOI: https://doi.org/10.7494/cmms.2003.1.0031 Abstract: Model of evolution of plastic anisotropy due to crystallographic texture development in metals subjected to large deformation processes … Read more

Methodology of solution of joint problems of modelling, identification and multi-criterion optimization in quality control for metallurgical processes Ludmiła Dymowa, Paweł Sewastjanow Wydzia ł Inżynierii Mechanicznej i Informatyki Politechniki Częstochowskiej. DOI: https://doi.org/10.7494/cmms.2003.1.0033 Abstract: The related simulation, identification and optimization problems in technological development and product quality control in the metallurgical mini-plant are considered. It is … Read more

Influence of process variables on development of laser weld pool Aleksander Siwek, Tomasz Didenko AGH University of Science and Technology. DOI: https://doi.org/10.7494/cmms.2003.1.0034 Abstract: The mathematical model of laser beam melting of stainless steel is presented in the paper. It is shown that process of melting is mainly controlled by value of surface tension. For the … Read more