Finite strain formulation of elasto-plasticity without yield surface: theory, parameter identification and applications

• Autorzy: Suchocki C. , Skoczylas P.

Identyfikatory

DOI

10.15632/jtam-pl.54.3.731

• Języki publikacji: EN

Abstrakty

EN

In this study, a finite strain formulation of elasto-plasticity without the yield surface is analyzed. It is found that the presented model allows for a good description of the elasto-plastic response for many metallic materials. Furthermore, it is noted that the model involving a limited number of material parameters is able to capture such effects as indefinite elastic limit, strain hardening, strain softening and the Bauschinger effect. An algorithm for the evaluation of constants is described and the determined values are given for NC high carbon tool steel, copper, brass, Inconel alloy, tungsten heavy alloy and aluminum.

Słowa kluczowe

EN

constitutive equation; plasticity; metals; material constants

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2016
• Tom: Vol. 54 nr 3
• Strony: 731--742
• Opis fizyczny: Bibliogr. 10 poz., rys., tab.

Twórcy

autor

Suchocki C.

• Warsaw University of Technology, Department of Mechanics and Armament Technology, Warsaw, Poland

autor

Skoczylas P.

• Warsaw University of Technology, Department of Mechanics and Armament Technology, Warsaw, Poland

Bibliografia

• 1. Backhaus G., 1976, Fließspannungen und Fließbedingung bei zyklischen Verformungen, ZAMM, 56, 8, 337-348
• 2. Ilyushin A.A., 1963, Plasticity, Foundations of the General Mathematical Theory (in Russian), Academy of Sciences of the USSR, Moscow
• 3. Mróz Z., Rodzik P., 1996, On multisurface and integral description of anisotropic hardening evolution in metals, European Journal of Mechanics – A/Solids, 15, 1, 1-28
• 4. Pipkin A.C., Rivlin R.S., 1965, Mechanics of rate-independent materials, ZAMP, 16, 313-327
• 5. Rivlin R.S., 1981, Some comments on the endochronic theory of plasticity, International Journal of Solids and Structures, 17, 231-248
• 6. Suchocki C., 2015, An internal-state-variable based viscoelastic-plastic model for polymers, Journal of Theoretical and Applied Mechanics, 53, 593-604
• 7. Valanis K.C., 1971a, A theory of viscoplasticity without a yield surface, Part I: General theory, Archives of Mechanics, 23, 517-534
• 8. Valanis K.C., 1971b, A theory of viscoplasticity without a yield surface, Part II: Application to mechanical behavior of metals, Archives of Mechanics, 23, 535-551
• 9. Valanis K.C., 1980, Fundamental consequences of a new intrinsic time measure, plasticity as a limit of the endochronic theory, Archives of Mechanics, 32, 171-191
• 10. Zalewski R., 2009, Numerical method of Chaboche’s model parameters identification basing on special granular structures experimental data, Modelling in Engineering, 38, 2, 309-319, (in Polish)

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniajacą naukę.