The purpose of this work is the formulation of constitutive models for the inelastic material behaviour of single crystals and polycrystals in which geometrically-necessary dislocations (GNDs) may develop and influence this behaviour. To this end, we focus on the dependence of the development of such dislocations on the inhomogeneity of the inelastic deformation in the material. More precisely,...

Numerous geological observations evidence that inelastic deformation occurs during sills and laccoliths emplacement. However, most models of sill and laccolith emplacement neglect inelastic processes by assuming purely elastic deformation of the host rock. This assumption has never been tested so that the role of inelastic deformation on the growth dynamics of magma intrusions remains poorly un...

2014 The cross-sections and resolving powers of the 11B(p, p’) inelastic scattering at Ep = 30.3 MeV are analyzed in the coupled-channels formalism. These calculations suggest a positive value for the quadrupole deformation 03B22 of 11B (prolate) and give the result 03B22 = + 0.52. LE JOURNAL DE PHYSIQUE LETTRES Classification Physics Abstracts 4.370 TOME 37, AVRIL 1976, In the understanding of...

Researches show that the strength criterion is inadequate for design of structures against seismic loads. Since structures yield and experience plastic deformation under strong ground motion, considering structural damage with inelastic behavior may be a considerable criterion for design and control of the structures.In this paper, three steel structures with dual system consisting of intermedi...

A finite strain micromechanical model is generalized in order to incorporate the effect of evolving damage in the metallic and polymeric phases of unidirectional composites. As a result, it is possible to predict the response of composites with ductile and brittle phases undergoing large coupled inelastic-damage and viscoelastic-damage deformations, respectively. For inelastic composites, both ...

Nacre (mother-of-pearl) from mollusc shells is a biologically formed lamellar ceramic. The inelastic deformation of this material has been experimentally examined, with a focus on understanding the underlying mechanisms. Slip along the lamellae tablet interface has been ascertained by testing in compression with the boundaries oriented at 45° to the loading axis. The steady-state shear resistan...

ÐMetal matrix composites (MMCs) can be synthesized by aligning metal coated ceramic ®bers in a shaped container and applying pressure at elevated temperatures. The high stresses created at the contacts between neighboring ®bers cause inelastic matrix ̄ow that ®lls inter®ber voids, reduces inter®ber separations and results in composite densi®cation. The rate of densi®cation depends on the contac...

Decohesion parameters are computed for the tilt grain boundaries through molecular simulations and the parameters are employed in a elastoplastic deformation model of a face centered cubic (FCC) nanocrystal. The calibrated continuum grain boundary model accounts for reversible elastic and irreversible inelastic separation sliding deformations. The intragranular plasticity was modeled using a ra...

A measurement of proton inelastic scattering 8He at 8.25A MeV TRIUMF shows a resonance 3.54(6) with width 0.89(11) MeV. The energy the state is in good agreement coupled cluster and no-core shell model continuum calculations, latter successfully describing measured as well. Its differential cross section analyzed phenomenological collective excitation form factor microscopic reaction channels f...