PowerDegradationFunction

Source: models/phase_field_fracture/PowerDegradationFunction.py

Power degradation function used to degrade the elastic strain energy density, \(g = \left( 1 - d \right)^p (1 - \eta) + \eta\), where \(d\) is the phase-field variable, \(p\) the power, and \(\eta\) a residual degradation when \(d = 1\).

Inputs

phase — input · Scalar · required

Phase-field variable

Outputs

degradation — output · Scalar · required

Value of the degradation function

Parameters

power — parameter · Scalar · required

Power of the degradation function

Other options

eta — float · default 0.0

Residual degradation when d = 1