... 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...

... for publication in the J ournal of A pplied M echanics . Manuscript received April 28, 2019; final manuscript received May 24, 2019; published online June 27, 2019. Assoc. Editor: Yonggang Huang. 28 04 2019 24 05 2019 25 05 2019 delamination fracture mechanics size effect law damage...

... with the initially intact interface. The rapid opening of the damaged interface once the compressive residual stresses are overcome renders the matrix material directly in front of the separated traction-free interface not as effective in supporting the applied horizontal load, producing lower magnitudes of the σ...

.... , and Inman , D. J. , 1997 , “ Time Domain Analysis for Damage Detection in Smart Structures ,” Mech. Syst. Signal Process. , 1 ( 3 ), pp. 409 – 423 . 10.1006/mssp.1996.0086 [3] Choi , S. , and Stubbs , N. , 2004 , “ Damage Identification in Structures Using the Time-Domain Response ,” J...

... in polycrystalline solids. 28 11 2010 23 12 2010 12 01 2011 15 04 2011 15 04 2011 dislocation density dislocation interactions elastic deformation plastic deformation plasticity shapes (structures) slip contact load deformation damage discrete dislocations dislocation...

... of cohesive zone; ⟦ ξ n ⟧ = damage variable K ̇ ( ⟦ ξ n ⟧ ) rate of K ( ⟦ ξ n ⟧ ) L dimensionless function, see Eqs. 32 , 63 m dimensionless crack opening at the inner edge of the cohesive zone, see Eq. 44...

... The main advantage of the SSM model is that one and the same model can simulate the orthotropic stiffness, failure envelopes, and the post-peak behavior, which include strain-softening damage and fracture mechanics aspects. This further implies that the SSM model must be able to automatically predict...

... in the formulation some microstructural features even in a phenomenological setting. In what follows, the constitutive law at the microplane level is formulated and physically justified on the basis of current knowledge of damage and failure...