Damage Mechanics in Engineering Materials by Voyiadjis G.Z., Ju J.W., Chaboche J.-L.

By Voyiadjis G.Z., Ju J.W., Chaboche J.-L.

This publication comprises thirty peer-reviewed papers which are in response to the shows made on the symposium on ''Damage Mechanics in Engineering Materials'' at the celebration of the Joint ASME/ASCE/SES Mechanics convention (McNU97), held in Evanston, Illinois, June 28-July 2, 1997. the major quarter of dialogue used to be at the constitutive modeling of wear mechanics in engineering fabrics encompassing the subsequent issues: macromechanics/micromechanical constitutive modeling, experimental tactics, numerical modeling, inelastic habit, interfaces, harm, fracture, failure, computational tools.

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Allen eds, Elsevier, (1996), pp 45-55. ,, 26 [2sl G~rard A. , "Comportement non lin~aire des composites h matrice c~ramique en cycle de charge-d~charge", CR Acad. Sci. 313, s~rie II, (1991), pp 1361-1366. M. , "A constitutive and damage model mixing scalar and tensorial damage variables", CR Acad. Sci. 322, s~rie IIb, (1996), pp 187-193. , Kruch S. , "Analyse de l'endommagement macroscopique d'un composite/i matrice m~tallique", Proc. JNC10, D. Baptiste, A. , AMAC, (1996), pp 1361-1371. , Dambrine B.

As observed in this figure, the damage component /9~ in the principal direction ~1 is larger than the component /922, which may be accounted for by the difference in the damage development in two directions 2~ and J_,. This results is due to the introduction of the modified stress ~ of equation (3) into the Gibbs thermodynamic potential F e (tr, D ) of equation (2). From physical point of view, the damage is caused mainly by the microscopic defects produced by the tensile principal stress, while the compressive principal stress leads to less material damage than the tensile one because of the crack closure effect.

And L. S. Costin. 1986. "Detecting damage surface in brittle materials using acoustic emissions", J. Appl. , Trans. , 53: 536-544. 23. , K. Hayakawa and Y. Liu, "Damage Evolution and Damage Surface of Elastic-Plastic-Damage Materials Under Multiaxial Loading", Int. J. Damage Mech. (Submitted). 24. Murakami, S. and N. Ohno, 1980, "A continuum theory of creep and creep damage", in Creep of Structures, 3rd IUTAM Symposium on Creep in Structures, A. R. S. Ponter, D. R. , Springer, Berlin, 422-444. 25.

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