On the non-quadratic defect energy in strain gradient crystal plasticity
TypeCommunications avec actes
Strain gradient crystal plasticity (SGCP) represents a very promising way to account for size effects in miniaturized components, thanks to the intrinsic length scale(s) embedded. Most of the existing SGCP models are based on a quadratic form of defect energy. However, it has recently been shown that this form leads to physically unrealistic results concerning the size-dependence of the mechanical response of miniaturized components. A generalized non-quadratic form is proposed in this work which aims to study the influence of the defect energy order on the global response of size-dependent materials.
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Strain gradient crystal plasticity model based on generalized non-quadratic defect energy and uncoupled dissipation JEBAHI, Mohamed; CAI, Lei; ABED-MERAIM, Farid (Elsevier BV, 2020)The present paper proposes a flexible Gurtin-type strain gradient crystal plasticity (SGCP) model based on generalized non-quadratic defect energy and uncoupled constitutive assumption for dissipative processes. A power-law ...
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