Papers

Using fuzzy numbers in fatigue reliability estimation

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Using fuzzy numbers in fatigue reliability estimation Tomasz Bednarek1,2, Piotr Prokopowicz2, Włodzimierz Sosnowski1,2 1Institute of Fundamental Technological Research, PAN, Warsaw, Poland. 2Kazimierz Wielki University, Bydgoszcz, Poland. DOI: https://doi.org/10.7494/cmms.2009.1.0206 Abstract: Increasing safety requirements of structures induces necessity of taking into consideration the random nature of variables in the fatigue design. Fatigue analysis of real structures in … Read more

Determination of mechanical properties of the weld zone of tailor-welded blanks

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Determination of mechanical properties of the weld zone of tailor-welded blanks Jerzy Rojek1, Monika Hyrcza-Michalska2, Adam Bokota3, Wiesława Piekarska3 1Institute of Fundamental Technological Research, Warsaw, Poland. 2Politechnika Śląska, Katowice, Poland. 3Politechnika Częstochowska, Częstochowa, Poland. DOI: https://doi.org/10.7494/cmms.2009.1.0222 Abstract: The present paper presents different available methods to determine mechanical properties of the weld zone of tailorwelded blanks … Read more

Nonlocal integral formulation for a plasticity-induced damage model

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Nonlocal integral formulation for a plasticity-induced damage model Filipe X.C. Andrade, Francisco m. Andrade Pires, José M.A. César De Sá, Lucival Malcher IDMEC – Mechanical Engineering Institute,Faculty of Engineering, University of Porto,Rua Dr. Roberto Frias s/n 4200-465 Porto, Portugal. DOI: https://doi.org/10.7494/cmms.2009.1.0207 Abstract: Ductile failure prediction commonly involves the use of the finite element method within … Read more

Investigation on sheet hydroforming of tailor-welded blanks and comparison with conventional deep drawing

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Investigation on sheet hydroforming of tailor-welded blanks and comparison with conventional deep drawing Mahdi Qarakhani1, Abolfazl Masoumi1, Mohammad Habibi Parsa2, Alireza Arayee1 1Department of Mechanical Engineering, Faculty of Engineering 2Department of Metallurgy and Materials Engineering, Faculty of Engineering University of Tehran, P.O.Box 11155/4563. DOI: https://doi.org/10.7494/cmms.2009.1.0223 Abstract: In this investigation, finite element simulations were carried out … Read more

Effect of temperature and strain rate on friction factor during hot deformation of al-mg and al-cu-mg al-alloys

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Effect of temperature and strain rate on friction factor during hot deformation of al-mg and al-cu-mg al-alloys Pavel Petrov1, Denis Gnevashev1, Andrey Dubinchin1, Michael Petrov1, Valentin Solotych2, Jon Wostryck Eiesland3 1Moscow State Technical University “MAMI”, B.Semenovskay str. 38, 107023 Moscow, Russia. 2Technical University of Munich, Faculty of Mechanical Engineering. 3Norwegian University of Science and Technology, … Read more

The numerical determination of contact zone tool and work-pieces in burnishing rolling process

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The numerical determination of contact zone tool and work-pieces in burnishing rolling process Radosław Patyk, Sylwia Patyk, Leon Kukiełka Department of Technical Mechanics and Strength Materials,Faculty of Mechanical Engineering,Koszalin University of Technology, ul. Raclawicka 15 – 17, Koszalin, Poland. DOI: https://doi.org/10.7494/cmms.2009.1.0224 Abstract: This work concerns burnishing rolling the shafts with elastic pressing of burnishing elements. … Read more

Numerical analysis of the influence of a change in the vertebral arteries joint angle on the blood flow

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Numerical analysis of the influence of a change in the vertebral arteries joint angle on the blood flow Krzysztof Jozwik, Damian Obidowski, Maciej Pogorzelski Medical Apparatus Division, Institute of Turbomachinery,,Technical University of Lodz, Lodz, Poland. DOI: https://doi.org/10.7494/cmms.2009.1.0209 Abstract: Cerebral circulation can be regarded as the most important element of blood circulation. Total ischaemia of neurotic … Read more

Numerical analysis of influence of surface geometrical structure prepared under burnishing rolling onto the state of strains and stress in product surface layer

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Numerical analysis of influence of surface geometrical structure prepared under burnishing rolling onto the state of strains and stress in product surface layer Agnieszka Kułakowska, Leon Kukiełka Department of Technical Mechanics and Strength Materials,Faculty of Mechanical Engineering,Koszalin University of Technology, ul. Raclawicka 15 – 17, Koszalin, Poland. DOI: https://doi.org/10.7494/cmms.2009.1.0225 Abstract: In the paper an application … Read more

Numerical study of a flow in the cerebral arterial circle

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Numerical study of a flow in the cerebral arterial circle Damian Obidowski, Krzysztof Jozwik, Piotr Reorowicz Medical Apparatus Division, Institute of Turbomachinery,,Technical University of Lodz, Lodz, Poland. DOI: https://doi.org/10.7494/cmms.2009.1.0210 Abstract: Blood is supplied to the brain by two internal carotid and two vertebral arteries. These arteries join to form the cerebral arterial circle (also called … Read more

Possibilities of the mechanical behaviour modelling of structures after severe plastic deformation

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Possibilities of the mechanical behaviour modelling of structures after severe plastic deformation Krzysztof Muszka, Karolina Doniec, Janusz Majta Faculty of Metals Engineering and Industrial Computer Science,,AGH University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland. DOI: https://doi.org/10.7494/cmms.2009.1.0211 Abstract: Modelling of the mechanical response of the materials using computer simulation is very useful tool to … Read more