Numerical simulation of spall induced by mesodefects in metals under shock loading
DOI:
https://doi.org/10.7242/1999-6691/2010.3.1.2Keywords:
shock waves, spall, defects, scalingAbstract
The statistical model developed in our earlier research is used to formulate a phenomenological model in terms of two independent variables, the defect density tensor and the structural scaling parameter, and to simulate shock wave propagation taking account of structural relaxation phenomena. It has been established that there is a relationship between the non-linear plastic deformation and failure mechanisms and the kinetics of structural scaling transition in the metastability area of the out-of-equilibrium thermodynamic potential of a solid with mesodefects. The proposed model allows us to describe the peculiarities of spall failure.
Downloads
References
Bayandin Yu.V., Naimark O.B., Leont’ev V.A., Permjakov S.L. Experimental and theoretical study of universality of plastic wave fronts and structural scaling in shock loaded copper // J. Phys. IV: Proc. of 8th Int. conf. on mechanical and physical behavior of materials under dynamic loading. (Dijon, France, August 2006). - V. 134. - P. 1015-1021.
Naimark O., Bayandin Yu., Zocher M., Preston D., Mesodefect induced mechanisms of thermally activated, steady state plastic flow and transmition to overdriven shock // New models and hydrocodes for shock wave processes in condensed matter: Proc. of 7th Int. conf. (ADAI, Lisbon, Portugal, May 2008). - P. 46-48.
Bayandin Yu., Naimark O., Mesodefect induced mechanisms of plasticity and failure in shocked solids // Solid Mechanics: Proc. of 36th Int. conf. (IFTR PAS, Warsaw, Poland, September 2008). - P. 274-275.
Glusak B.L., Kuropatenko V.F., Novikov S.A. Issledovanie procnosti materialov pri dinamiceskih nagruzkah. - Novosibirsk: Nauka, 1992. - 295 s.
Garkusin G.V., Razorenov S.V., Kanel’ G.I., Ivancihina G.I., Ignatova O.N. Rol’ vnutrennej struktury v processe vysokoskorostnogo deformirovania i razrusenia polikristalliceskoj medi // Ekstremal’nye sostoania vesestva. Detonacia. Razrusenie: sb. tez. mezd. konf. <>. (Sarov, 16-23 marta 2009 g.). - S. 165-167.
Razorenov S.V., Kanel’ G.I., Ivancihina G.I. Vlianie nanorazmernyh vklucenij na dinamiceskuu procnost’ i kinetiku razrusenia monokristallov medi // Ekstremal’nye sostoania vesestva. Detonacia. Razrusenie: sb. tez. mezd. konf. <>. (Sarov, 16-23 marta 2009 g.). - S. 170-172.
Garkusin G.V., Razorenov S.V., Ignatova O.N. Dinamiceskaa procnost’ medi s razlicnoj strukturoj v usloviah vysokoskorostnogo deformirovania // Deformacia i razrusenie materialov. - 2008. - No 1. - S. 38-43.
Stegajlov V.V., Anilkin A.V. Strukturnye prevrasenia v monokristalliceskom zeleze pri udarno-volnovom szatii i rastazenii. Issledovanie metodom molekularnoj dinamiki // ZETF. - 2007. - T. 131, No 6. - S. 1064-1072.
Gemze L.A., Gemze L.N. Analiz mikro- i nanostruktury keramiki na baze Al2O3 pri skorosti udara vyse 800 m/s // Ekstremal’nye sostoania vesestva. Detonacia. Razrusenie: sb. tez. mezd. konf. <>. (Sarov, 16-23 marta 2009 g.). - S. 189-191.
Feder E. Fraktaly. - M.: Mir, 1991. - 254 s.
Yujing Jiang, Bo Li and Yosihiko Tanabashi Estimating the relation between surface roughness and mechanical properties of rock joints // Int. J. of Rock Mechanics and Mining Sciences. - V. 42. - N. 6. - 2006. - P. 837-846.
Downloads
Published
Issue
Section
License
Copyright (c) 2010 Computational Continuum Mechanics
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.