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

Application of the cyclic plasticity hardening law to metal forming

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Application of the cyclic plasticity hardening law to metal forming Krzysztof Muszka, Konrad Perzyński, Łukasz Madej AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland. DOI: https://doi.org/10.7494/cmms.2008.4.0255 Abstract: Creation of a robust numerical model of the low cyclic plastic deformation is essential for predicting inhomogeneities occurring during strain path change. Application of … Read more

Phase transition simulations for solidification of fe-c alloy with cellular automata interfaced with self-adaptive hp finite element method for non-stationary heat and mass transport problems

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Phase transition simulations for solidification of fe-c alloy with cellular automata interfaced with self-adaptive hp finite element method for non-stationary heat and mass transport problems Maciej Paszyński1, Jerzy Gawąd2, Paweł Matuszyk2, Łukasz Madej2, Dorota Podorska3 1Department of Computer Science, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland. 2Department of Applied Computer … Read more

The application of the morris method for determination of ranges of parameters variation, having assumed influence on calculation result

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The application of the morris method for determination of ranges of parameters variation, having assumed influence on calculation result Norbert Sczygiol, Robert Dyja Czestochowa University of Technology, Institute of Computer and Information Sciences,,73 Dabrowskiego str., 42-200 Czestochowa. DOI: https://doi.org/10.7494/cmms.2008.4.0257 Abstract: A method of sensitivity analysis for determining acceptable ranges of uncertainty of tested model’s parameters … Read more

Computer aided design of manufacturing technology for copper-chromium alloys

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Computer aided design of manufacturing technology for copper-chromium alloys Jarosław Nowak1, Stanisław Węglarczyk1, Roman Kuziak2, Krzysztof Drozdowski3, Maciej Pietrzyk1 1AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland. 2Institute for Ferrous Metallurgy, ul. K. Miarki 12, 44-100 Gliwice, Poland. 3Zakład Obróbki Plastycznej, ul. Kuźnicza 13, 21-045 Świdnik k/Lublina, Poland. DOI: https://doi.org/10.7494/cmms.2008.4.0258 Abstract: … Read more

Three-dimensional upper bound analyses for extrusion from square billets through complex die-openings’ shapes

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Three-dimensional upper bound analyses for extrusion from square billets through complex die-openings’ shapes Joseph S. Ajiboye Department of Mechanical Engineering, University of Lagos, Lagos, Nigeria;,present address: KAIST Valufacture Institute of Mechanical Engineering, School of Mechanical,,Aerospace & Systems Engineering, Korea Advanced Institute of Science and Technology,Daejeon 305-701, Korea DOI: https://doi.org/10.7494/cmms.2008.4.0259 Abstract: A numerical model based on … Read more

Homogenization of one dimensional elliptic system

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Homogenization of one dimensional elliptic system Paweł Mitkowski1, Wojciech Mitkowski2 1Faculty of Electrical Engineering, Automatics, Electronics and Computer Science, Akademia Górniczo-Hutnicza, al. Mickiewicza 30, 30-059 Kraków, Poland. 2Department of Automatics, Akademia Górniczo-Hutnicza al. Mickiewicza 30, 30-059 Kraków, Poland. DOI: https://doi.org/10.7494/cmms.2008.3.0197 Abstract: The work presents problem of homogenization of one-dimenional mediums of periodic micrsotructure, and more … Read more