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Download Anisotropy and Localization of Plastic Deformation: by Jacob Aboudi (auth.), Jean-Paul Boehler, Akhtar S. Khan PDF

By Jacob Aboudi (auth.), Jean-Paul Boehler, Akhtar S. Khan (eds.)

Present advancements in fabrics technology, mechanics and engineering, in addition to the calls for of recent expertise, bring about a brand new and turning out to be curiosity in plasticity and in bordering domain names of the mechanical habit of fabrics. This transforming into curiosity is attested to through the good fortune of either The foreign magazine of Plasticity, which after its inception speedily grew to become the best magazine for plasticity examine, and the sequence ofInternational Symposia on Plasticity and Its present purposes, that's now the finest foreign discussion board for plasticity learn dissemination. the 1st foreign Symposium on Plasticity and Its present functions used to be conceived and arranged through Professor Akhtar S. Khan, and was once held on the college of Oklahoma (Norman, Oklahoma, united states) from July 30 to August three, 1984. It was once attended by means of over 100 scientists from fifteen international locations. "Plasticity '89: the second one overseas Symposium on Plasticity and Its present purposes" was once held at Mie college (Tsu, Japan) from July 31 to August four, 1989; this symposium was once co-chaired by way of Professors Khan and Tokuda. the most emphasis of this assembly used to be on dynamic plasticity and micromechanics, even though it incorporated different points of plasticity in addition. It used to be attended by way of over 200 researchers from twenty-three nations.

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Extra resources for Anisotropy and Localization of Plastic Deformation: Proceedings of PLASTICITY ’91: The Third International Symposium on Plasticity and Its Current Applications

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A, 1990, 431, 89-110. 3. , "Plasticity Theories for Fibrous Composite Materials," Metal Matrix Composites: Mechanisms and Properties, eds. R. K. Everett and R. J. Arsenault, Academic Press, Boston, 1991, 1-77. 4. Benveniste, Y. , "On a Correspondence Between Mechanical and Thermal Effects in Two-Phase Composites," Micromechanics and Inhomogeneity, eds. J. Weng, M. Taya and H. Abe, Springer-Verlag, New York, 1990, 65--81. 5. Bahei-El-Din, Y. , "Yielding and Thermal Hardening in Fibrous Composite Laminates," to be published.

All the stress-strain responses coincide and are almost linear when 1 is smaller than 4%. When 1 is about 4%, small spikes are detected in the stress-strain response curves before the main peak. They correspond to the beginning of rapid structural changes in the granular assemblies which ultimately fonn a failure mechanism with shear bands. 2 have similar stress-strain response curves. It is concluded that the stresses and strains inside and outside the shear bands coincide approximately, a conclusion which supports the assumptions ofunifonn stress and strain made in [1, 2].

The corresponding thermoelastic problem was studied by O'Neill, Rogers and Spencer [2]. We show that, in the case of a thermoelastic-plastic section, even for a body supporting residual stress as a result of previous plastic deformation, the thermal response is identical to that of the thermoelastic material, and that the distortion due to heating is reversible and does not lead to permanent deformation. 29 ORTHOTROPIC THERMOELMTIC-PLMTIC SOLID We consider a thermoelastic-plastic material with, locally, orthotropic symmetry and introduce an orthogonal curvilinear coordinate system OXi (i=1,2,3) such that the coordinate axes coincide with the orthotropic axes.

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