Effect of Nonlinear Interface Debonding on the Constitutive Model of Composite Materials

The uniaxial tension of particulate composite materials with nonlinear interface debonding

“…The cohesive properties, including the linear hardening modulus, cohesive strength and cohesive energy, have been obtained for PBX 9501. Using such a cohesive law, Tan et al (2005aTan et al ( , 2006 studied the effect of nonlinear interface debonding on macroscopic constitutive behavior of the high explosive PBX 9501. Specifically, small particles lead to hardening behavior of PBX 9501 while large particles yield softening behavior.…”

Continuum Modeling of Interfaces in Polymer Matrix Composites Reinforced by Carbon Nanotubes

“…When implemented in the finite element method, the cohesive zone model is capable of simulating interface debonding and sliding. [58][59][60][61][62][63][64][65][66][67][68] The existing cohesive models, however, are all phenomenological because it is difficult to measure directly the cohesive laws for interfaces in experiments. There are some recent experimental studies of microscale cohesive laws, 67,[69][70][71][72][73][74] but none on nanoscale cohesive laws such as for the CNT/polymer interfaces.…”

Constitutive behaviors of composites with interface debonding: the extended Mori–Tanaka method for uniaxial tension

“…Interface debonding is usually characterized by a nonlinear cohesive law (e.g., Needleman 1987; Hutchinson 1992, 1993;Xu and Needleman 1994;Camacho and Ortiz 1996;Zhong and Knauss 1997, 1999, 2000Espinosa et al 1998;Geubelle and Baylor 1998;Huang and Gao 2001;Zhang et al 2002;Kubair et al 2002Kubair et al , 2003Samudrala et al 2002;Samudrala and Rosakis 2003;Thiagarajan et al 2004a, b;Tan et al 2005aTan et al , 2006Tan et al , 2007, which gives the stress tractions in terms of displacement discontinuities across the interface. Tan et al (2005b) combined experiments and micromechanics models to determine the cohesive law for particle/matrix interfaces in the high explosive PBX 9501.…”

“…The cohesive properties, including the linear modulus, cohesive strength, and softening modulus, have been obtained for PBX 9501. Using such a cohesive law, Tan et al (2005aTan et al ( , 2006 studied the effect of nonlinear interface debonding on macroscopic constitutive behavior of the high explosive PBX 9501 subject to hydrostatic tension. The composite behaves nonlinearly after the interface strength being reached.…”

“…The above interface cohesive law has been used to study the constitutive behavior of composite materials subject to hydrostatic tension (Tan et al 2005a(Tan et al , 2006. However, only interface opening displacement is considered in Eqs.…”