... separation at the delamination interface was controlled by a surface-based cohesive zone constitutive law. The instigation of interfacial delamination was determined by the critical separation distance of interface node pairs in mixed-mode loading based on a damage initiation criterion exemplified...

...Mingyao Li; Xin Chen; Dong Zhou; Yewang Su The development of constitutive models for shales has been a challenge for decades due to the difficulty of characterizing the strongly anisotropic macroscopic behavior related to the inherent mesostructure and damage mechanisms. In this paper, a spectral...

...). This observation confirms that the structural behavior of the ENF specimens is much more influenced by the strain redistribution caused by the damage in the FPZ and that the resulting structural behavior is much more quasi-ductile. Due to the presence of a characteristic length scale c f ( I I...

... of one nonzero macroscopic strain component in the absence of damage determines one column vector of A ( q ) , which is done just once. On the other hand, the vector D ( q ) , which contains thermal and displacement discontinuity contributions to the q th subvolume...

... element model updating method is used for the damage identification. The damage is assumed only related to a stiffness reduction such as a change in the elastic modulus of material in a finite element. The mass matrix is assumed to be unchanged before and after the local damage occurrences. The elemental...

... . 10.1016/j.jmps.2006.12.005 Lemaitre , J. , and Dufailly , J. , 1987 , “ Damage Measurements ,” Eng. Fract. Mech. EFMEAH 0013-7944 , 28 , pp. 643–661 . 10.1016/0013-7944(87)90059-2 Johnson , K. L. , 1987 , Contact Mechanics , Cambridge University Press , Cambridge, UK , pp...

... ∊ { 1 , 2 , 3 } K ( ⟦ ξ n ⟧ ) elastodamaging stiffness of cohesive zone; ⟦ ξ n ⟧ = damage variable K ̇ ( ⟦ ξ n ⟧ ) rate of K ( ⟦ ξ n ⟧ ) L dimensionless function, see Eqs. 32...

.... Struct. (Rilem, Paris) , 16 , pp. 155 – 177 . Bažant , Z. P. , and Planas , J. , 1998 , Fracture and Size Effect in Concrete and Other Quasibrittle Materials , CRC , Boca Raton, FL. Daniel , I. M. , and Lee , J. W. , 1990 , “ Damage Development in Composite Laminates...

... , L. , 2003 , Stability of Structures: Elastic, Inelastic, Fracture and Damage Theories , 2nd ed. , Dover Publications , New York. Engineering Mechanics of Composite Materials...