cmms

Comparison of numerical models for hydroforming of X-shapes

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Comparison of numerical models for hydroforming of X-shapes Hanna Sadłowska, Andrzej Kocańda Institute of Materials Processing, Warsaw University of Technology,Narbutta 85, 02-524 Warsaw, Poland. DOI: https://doi.org/10.7494/cmms.2007.2.0158 Abstract: Numerical modeling has proved to be a powerful tool for development of hydroforming processes. There have been used various numerical models but it has been difficult to choose … Read more

Ontogrator – an intelligent access to heterogeneous knowledge sources about casting technology

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Ontogrator – an intelligent access to heterogeneous knowledge sources about casting technology Stanisława Kluska-Nawarecka1, Grzegorz Dobrowolski2, Robert Marcjan2, Edward Nawarecki2 1Instytut Odlewnictwa, ul. Zakopiańska 73, 30-418 Kraków. 2Katedra Informatyki, AGH University of Science and Technology., al. Mickiewicza 30, 30-059 Kraków. DOI: https://doi.org/10.7494/cmms.2007.2.0162 Abstract: OntoGRator is a system for integration and organization of access to various … Read more

The analysis of the influence of plug shape and its position on piercing process in skew rolling mill

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The analysis of the influence of plug shape and its position on piercing process in skew rolling mill Jan Kazanecki1, Zbigniew Pater2, Jarosław Bartnicki2 1AGH University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland. 2Lublin University of Technology, Nadbystrzycka 36, 20-618 Lublin, Poland. DOI: https://doi.org/10.7494/cmms.2007.2.0159 Abstract: In this paper the results of FEM simulations … Read more

On partial hydrodynamic lubrication effects in the journal bearings

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On partial hydrodynamic lubrication effects in the journal bearings Tomasz Szolc, Włodzimierz Sosnowski Institute of Fundamental Technological Resrearch of the Polish Academy of Sciences 00-049 Warsaw, ul. Świętokrzyska 21. DOI: https://doi.org/10.7494/cmms.2007.1.0126 Abstract: The objective of this research is to include mixed friction effects into existing models of hydrodynamic journal bearings. The considerations in this paper … Read more

Influence of micro asperity-valley on the surface of forging tools on tribological conditions

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Influence of micro asperity-valley on the surface of forging tools on tribological conditions Hiroyuki Saiki, Yasuo Marumo, Liqun Ruan, Junpei Kozasa Department of Mechanical System Engineering, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan. DOI: https://doi.org/10.7494/cmms.2007.1.0127 Abstract: The relationship between apparent coefficient of friction, surface roughness and the yield stress … Read more

Generalized approach to the choice of lubricant for hot isothermal forging of aluminium alloys

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Generalized approach to the choice of lubricant for hot isothermal forging of aluminium alloys Pavel A. Petrov Moscow State Technical University “MAMI. DOI: https://doi.org/10.7494/cmms.2007.1.0128 Abstract: The present paper is a generalization of the results which were obtained for the last four years (Petrov et al., 2003, 2004, 2005, 2006). It implies the investigations of interfacial … Read more

Simulation of dynamic recrystallization using random grid cellular automata

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Simulation of dynamic recrystallization using random grid cellular automata Nima Yazdipour1, Christopher H.J.Davies2, Peter Damian Hodgson1 1Center of Material and Fibre Innovation (CMFI), Deakin University, Geelong, Victoria 3217, Australia. 2School of Physics and Materials Engineering, Monash University, Victoria 3800, Australia. DOI: https://doi.org/10.7494/cmms.2007.1.0112 Abstract: Computer simulation is a powerful tool to predict microstructure and its evolution … Read more

Convection of internal variable methodology in computational fluid dynamics solutions for thixoforming modelling

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Convection of internal variable methodology in computational fluid dynamics solutions for thixoforming modelling Piotr Macioł Interdisciplinary Centre for Materials Modelling, AGH University of Science and Technology. DOI: https://doi.org/10.7494/cmms.2007.1.0129 Abstract: Thixoforming is a relatively new forming method, with high deformation of semi-solid material. From numerical point of view, such materials are difficult to simulate because of … Read more

Hot forming and heat treatment simulation in a steel mill

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Hot forming and heat treatment simulation in a steel mill Christian Redl1, Baohui Tian1, Volker Wieser1, Christof Sommitsch2, Thomas Wlanis2 1Böhler Edelstahl GmbH, 8605 Kapfenberg, Austria. 2Christian-Doppler-Laboratory for Materials Modelling and Simulation, 8700 Leoben, Austria. DOI: https://doi.org/10.7494/cmms.2007.1.0113 Abstract: Numerical simulation is nowadays becoming a standard tool in industrial processes. This paper provides an insight about … Read more

Effect of capillary tip shape on deformation and bondability in Au wire bonding

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Effect of capillary tip shape on deformation and bondability in Au wire bonding Hiroyuki Saiki1, Yasuo Marumo1a, Hiroshi Nishitake2, Tetsuhiro Uemura1, Takahiro Yotsumoto2 1Department of Mechanical System Engineering, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555 Japan. 2a Sony Semiconductor Kyushu Co. Ltd., Japan. DOI: https://doi.org/10.7494/cmms.2007.1.0130 Abstract: Au wire bonding is … Read more