Abstract :
Atraction-separation relation tomodel
the fracture process is presented. The cohesive law
captures the linear elastic and softening behaviour
prior to fracture. It also allows for different fracture
parameters, such as fracture energy, strength
and critical separation in different mode mixities.
Thus, the fracture process in mode I (peel), in
mode II (shear) or in mixed mode (a combination
of peel and shear) can be modelled without
the limitation of a common fracture energy in peel
and shear. Examples are given in form of FEimplementations
of the normalised cohesive law,
namely for the Unsymmetrical Double Cantilever
Beam (UDCB) specimen and the Mixed-mode
double Cantilever Beam (MCB) specimen. Both
specimens are adhesively bonded and loaded in
mixed-mode.
