You specify a relative amplitude,, as a function of time after debonding starts at a node. You can define how this force is to be reduced to zero with time after debonding starts at a particular node on the bonded surface. ABAQUS/Standard checks to ensure that the node set defined includes only slave nodes belonging to the contact pair specified.īy default, the nodes in the node set are considered to be initially bonded in all directions.Īfter debonding, the traction between two surfaces is initially carried as equal and opposite forces at the slave node and the corresponding point on the master surface. If a node set is specified, the initial conditions apply only to the slave nodes in the node set. If a node set is not specified, the initial contact conditions will apply to the entire contact pair in this case, no crack tips can be identified, and the bonded surfaces cannot separate. Either the slave surface or the master surface must be specified if only the master surface is given, all of the slave surfaces associated with this master surface that have nodes in the node set will be bonded at these nodes. The unbonded portion of the slave surface will behave as a regular contact surface. You specify the slave surface, the master surface, and a node set that identifies the initially bonded part of the slave surface. Initially bonded crack surfaces cannot be used with self-contact.ĭefine an initial condition to identify which part of the crack is initially bonded. These predetermined surfaces are assumed to be initially partially bonded so that the crack tips can be identified explicitly by ABAQUS/Standard.

Potential crack surfaces are modeled as slave and master contact surfaces (see ∽efining contact pairs in ABAQUS/Standard, Section 21.2.1).

Abaqus 6.14 crack