Phelan, Edward Joseph

Biography o Edwadrd Joseph PHELAN, British civil servant of Irish descent and fourth Director of the International Labour Office 1941-1946 (acting) and first Director-General of the International Labour Organization 1941-1948

A distributional approach to the geometry of dislocations at the mesoscale

We develop a theory to represent dislocated single crystals at the mesoscopic scale by considering concentrated effects, governed by the distribution theory combined with multiple-valued kinematic fields. Our approach gives a new understanding of the continuum theory of defects as developed by Kroener (1980) and other authors. Fundamental 2D identities relating the incompatibility tensor to the Frank and Burgers vectors are proved under global strain assumptions relying on the geometric measure theory, thereby giving rise to rigorous homogenisation from mesoscopic to macroscopic scale.Comment: article soumi

Damage-driven fracture with low-order potentials: asymptotic behavior, existence and applications

We study the $\Gamma$-convergence of damage to fracture energy functionals in the presence of low-order nonlinear potentials that allows us to model physical phenomena such as fluid-driven fracturing, plastic slip, and the satisfaction of kinematical constraints such as crack non-interpenetration. Existence results are also addressedComment: 41 pages, 4 Figure

A damage-based temperature-dependent model for ductile fracture with finite strains and configurational forces

A temperature dependent model for ductile fractur