SalehaniIraniDamage

Source: models/solid_mechanics/traction_separation_law/SalehaniIraniDamage.py

Trial damage \(d_\text{trial} = 1 - \exp[-(b_n + b_{s1}^2 + b_{s2}^2)]\) of Salehani & Irani, where \(b_n = \delta_n / \delta_{u0,n}\) and \(b_{si} = \delta_{si} / (\sqrt{2} \delta_{u0,t})\).

Note: normal_characteristic_length (\(\delta_{u0,n}\)) and tangential_characteristic_length (\(\delta_{u0,t}\)) must match the parameters configured in the corresponding downstream SalehaniIraniTraction. For calibrated parameters, wire both models to the same ScalarConstantParameter outputs. For fixed parameters, both models may reference the same [Tensors] definitions.

Inputs

normal_separation — input · Scalar · required

Normal separation (typically the Macaulay-positive part of the normal jump)

tangential_separation_1 — input · Scalar · required

First tangential separation

tangential_separation_2 — input · Scalar · required

Second tangential separation

Outputs

trial_damage — output · Scalar · required

Rate-independent trial damage

Parameters

normal_characteristic_length — parameter · Scalar · required

Normal characteristic length (must match SalehaniIraniTraction)

tangential_characteristic_length — parameter · Scalar · required

Tangential characteristic length (must match SalehaniIraniTraction)