Stored energy of plastic deformation in tube bending processes

• Autorzy: Śloderbach Z. , Pająk J.

Identyfikatory

DOI

10.2478/ijame-2013-0015

• Języki publikacji: EN

Abstrakty

EN

The paper presents an aproximate analytic method for determination of the stored energy of plastic deformation during cold bending of metal tubes at bending machines. Calculations were performed for outer points of the tube layers subjected to tension and compression (the points of maximum strains). The percentage of stored energy related to the plastic strain work was determined and the results were presented in graphs. The influence and importance of the stored energy of plastic deformation on the service life of pipeline bends are discussed.

Słowa kluczowe

EN

plastic deformation; tube bending; stored energy; austenitic steel; boiler steel

PL

odkształcenia plastyczne; gięcie rur; energia zmagazynowana; stal austenityczna; kocioł stalowy

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2013
• Tom: Vol. 18, no. 1
• Strony: 235--248
• Opis fizyczny: Bibliogr. 27 poz., wykr.

Twórcy

autor

Śloderbach Z.

• Opole University of Technology Faculty of Applications of Chemistry and Mechanics 45-036 Opole, ul. Luboszycka 7, Poland

autor

Pająk J.

• Opole University of Technology Faculty of Applications of Chemistry and Mechanics 45-036 Opole, ul. Luboszycka 7, Poland

Bibliografia

• Adam C.M. and Wolfenden A. (1978): The influence of microstructure on the energy stored in deformed aluminiumand aluminium alloys. - Acta Metallurgica, vol.26, pp.1307-1315.
• Bever M.B., Holt D.L. and Titchaner A.L. (1973): The stored energy of cold work. - Progress in Materials Science, vol.17, Oxford, Pergamon Press.
• Buchdahl H.A. (1966): The concepts of classical thermodynamics. - Cambrigde Univ. Press.
• Chrysochoos A., Maissonneuve O., Martin G., Caumon H. and Chezeaux J.C. (1989): Plastic and dissipated work andstored energy. - Nuclear Engineering and Design, vol.114, Notrh-Holland, Amsterdam, pp.323-333.
• Chrysochoos A. and Martin G. (1989): Tensile test microcalorimetry for thermomechanical behaviour law analysis. - Materials Science and Engineering, A 108, pp.25-32.
• Chrysochoos A. and Belmanjoub F. (1992): Thermographic analysis of thermomechanical couplings. - Archives of Mechanics, vol.44, No.1, pp.55-68.
• Cottrell A.H. (1964): The Mechanical Properties of Matter. - New York: John Willey and Sons.
• El-Sebaie M.G. and P.B. (1972): Plastic instability conditions in the deep-drawing of a circular blank of sheet metal. - Int. J. Mech. Sci., vol.14, pp.535-556.
• Franz W.D. (1961): Das Kalt-Biegen von Rohren. - Berlin: Springer-Verlag.
• Franz W.D. (1969): Numerisch gesteuerte Rohrkaltbiegemaschinen. - Werkstatt und Betrieb, Heft 9/69.
• Gadaj S.P., Nowacki W.K. and Pieczyska E. (1996): Changes of temperature during the simple shear test of stainlesssteel. - Archives of Mechanics, vol.48, 4.
• Kocańda A. (1998): Termomechanical bulk forming of steel. - Proceedings of the Riso International Symposium on Metallurgy and Materials Science, PRISEA, pp.1-97.
• Marciniak Z. (1971): Limit Deformations in Sheet Metal Stamping. - Warszawa: WNT.
• Marciniak Z. and Konieczny A. (1987): Modelling the variation of the yield stress within the temperature range typicalfor cold and warm metal forming. - J. Mech. Work. Technology, vol.15, pp.15-37.
• Oliferuk W., Świątnicki W.A. and Grabski M.W. (1993): Rate of energy storage and microstructure evolution duringthe tensile deformation of austenic steel. - Materials Science and Engineering, A 161, Elsevier Science S.A., pp.55-63.
• Oliferuk W., Świątnicki W.A. and Grabski M.W. (1995): Effect of the grain size on the rate of energy storage duringtensile deformation of an austenitic steel. - Materials Science and Engineering, A 197, Elsevier Science S.A., pp.49-58.
• Oliferuk W., Korbel A. and Grabski M.W. (1996): Mode of deformation and the rate of energy storage during uniaxialtensile deformation of austenitic steel. - Materials Science and Engineering, A 220, Elsevier Science S.A., pp.123-128.
• Oliferuk W. (1997): Energy storage process and its relation to material structure in austenic steel tested in simple tension. (in Polish) - IFTR Reports - Polish Academy of Sciences, No 11/1997, Warszawa.
• Perzyna P. (1978): Thermodynamics of Inelastic Materials. - Warszawa: PWN.
• Raniecki B. and Sawczuk A. (1975): Thermal effects in plasticity. Part I: Coupled theory. - ZAMM, vol.55, pp.333-341.
• Raniecki B. (1977): Problems of applied thermoplasticity [in Polish]. - IFTR-Reports, No.29, Warszawa.
• Soós E. and Badea L. (1997): A new theory of the stored energy in elasto-plasticity and the torsion test. - Eur. J. Mech., A/Solids, vol.16, No.3, Gauthier-Villars, pp.467-500.
• Śloderbach Z. (1983): Generalized coupled thermoplasticity. Part I. Fundamental equations and identities. - Archives of Mechanics, vol.35, No.3, Warszawa, pp.337-349.
• Śloderbach Z. (1999): A model of deformation geometry in pipe bending processes. - Engineering Transactions, vol.47, pp.3-20.
• Śloderbach Z. and Rechul Z. (2000): Effect of strain hardening and normal anisotropy on allowable values of strainand stress in pipe-bending processes. - Journal of Theoretical and Applied Mechanics, PTMT I S, No.4, vol.38, Warszawa, pp.843-859.
• Śloderbach Z. and Rechul Z. (2006): A thermodynamic approach to the stored energy concept. - Journal of Technical Physics, vol. XLVII, No.2, pp.83-102.
• Życzkowski M. and Tran L.B. (1997): Interaction curves corresponding to the decohesive carrying capacity of a cylindricalshell under combined loading. - Int. J. Plasticity, vol.13, pp.551-570.