A procedure for elastoplastic hardening function identification

• Autorzy: Sikora Z. , Ichikawa Y. , Dziadziuszko P.

Warianty tytułu

PL

Procedura identyfikacji parametrów funkcji wzmocnienia dla prawa sprężysto-plastycznego

• Konferencja: XII Kolokwium Francusko-Polskie ze Stosowanej Mechaniki Gruntów i Skał. 03-04.07.2000 r. Paryż
• Języki publikacji: EN

Abstrakty

EN

The inverse analysis method for identifying a nonlinear hardening function, which governs a plastic yielding of soil and rock materials in the framework of the elastoplastic theory, is presented. A concept of two-stage finite element based on the spatial discretization of computational space and hardening function space is introduced. The proposed inverse analysis can be classified as the output least-squares method. The Levenberg-Marquard method is utilized for the minimization of the goal function at hand. A numerical example is given for the hardening function identification with the modified Drucker-Prager yield criterion in the case of a simple compression triaxial test.

Słowa kluczowe

EN

elastoplastic hardening function; identification procedure

PL

parametr funkcji wzmocnienia; identyfikacja parametrów; prawo sprężysto-plastyczne

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2003
• Tom: Vol. 25, nr 1-2
• Strony: 121--131
• Opis fizyczny: Bibliogr. 7 poz., wykr., rys.

Twórcy

autor

Sikora Z.

• Geotechnical Department, Hydro- and Environmental Engineering, Technical University of Gdańsk, Gabriela Narutowicza 11/12, 80-952 Gdańsk, Poland

autor

Ichikawa Y.

• Department of Geotechnical and Environmental Engineering, Nagoya University, Chikusa, 464-8603 Nagoya, Japan

autor

Dziadziuszko P.

• Transprojekt Gdańska Ltd.., ul. Partyzantów 72B, 80-254 Gdańska, Poland.

Bibliografia

• [1] Dziadziuszko P., Inverse analysis procedures for selected nonlinear and time-dependent constitutive models of soils, Ph.D. thesis, Nagoya University, Nagoya, Japan, 2000.
• [2] Dziadziuszko P., Ichikawa Y., Sikora Z., Inverse analysis procedure for identifying hardening function in elastoplastic problem by two-stage finite element scheme, Inverse Problems in Engineering, 2000, 00:1-21.
• [3] Gioda G., Sakurai S., Back analysis procedures for the interpretation of field measurements in geomechanics, J. Numer. Anal. Meth. Geomech., 1987, 11(6): 555-583.
• [4] Ichikawa Y., Ito T., Mróz Z., A strain localization condition applying multi-response theory, Ingenieur-Archiv, 1990, 60: 542-552.
• [5] Ichikawa Y„ Kyoya H„ Kawamoto T., Incremental theory of plasticity for rock, Proc. 5th Int. Conf. Numer. Meth. Geomech., Nagoya, Japan, Vol. 1,451-462, A.A. Balkema, 1985.
• [6] Ichikawa Y., Kyoya T., Nitta H., Kawamoto T., Microcomputer measurement determining plasticity spectrum in incremental theory, Proceedings of the International Conference on Education, Practice and Promotion of Computational Methods in Engineering Using Small Computers, Vol. 3B, 329-341, Macau, 1985.
• [7] Rudnicki J.W., Rice J.R., Conditions for the localization of deformation in pressure-sensitive dilatant materials, J. Mech. Phys. Solids, 1975, 23: 371-394.