A crystal plasticity finite-element model, which explicitly and directly represents the complex microstructures of a non-metallic agglomerate inclusion within polycrystal nickel alloy, has been developed to study the mechanistic basis of fatigue crack nucleation. The methodology is to use the crystal plasticity model in conjunction with direct measurement at the microscale using high (angular) ...

Abstract When an elastoplastic material undergoes large plastic deformations, the elastic law and particularly stiffness tetrad will evolve. This evolution is strongly dependent on particular material. In present paper, we consider a fiber-reinforced composite with fibers in different distinct directions. These directions introduce anisotropy into behavior, law. Under these are deformed togethe...

In this issue of Neuron, Zhang et al. (2015) provide the first crystal structure of a domain Arc. These results confirm prior computational approaches that suggested Arc, a master regulator of vertebrate synaptic plasticity, was "domesticated" from Ty3/Gypsy retrotransposons.

Abstract We consider a semi-linear integro-differential equation in dimension one associated to the half Laplacian whose solution represents atom dislocation crystal. The comprises evolutive version of classical Peierls–Nabarro model. show that for large number dislocations, solution, properly rescaled, converges well known called by Head (1972) ”the motion continuum”. limit is model macroscopi...