5.1. Supported UPF Subroutines

A subset of the entire set of available UPF subroutines support Python coding (see the table below). This list will be expanded in the future.

For more information about each subroutine, click the link to the Fortran description.

Table 5.1: Python Support for Subroutines

Subroutine Fortran Description
Material Behavior
UserMat Subroutine UserMat (Creating Your Own Material Model)
UserMatTh Subroutine UserMatTh (Creating Your Own Thermal Material Model)
UserHyper Subroutine UserHyper (Writing Your Own Isotropic Hyperelasticity Laws)
UserCreep Subroutine UserCreep (Defining Your Own Implicit Creep Material Behavior)
UserCrSubroutine UserCr (Defining Your Own Explicit Creep Material Behavior)
Modifying and Monitoring Elements
UsrShift Subroutine UsrShift (Calculating a Pseudotime Time Increment)
UTimeInc Subroutine UTimeInc (Overriding the Program-Determined Time Step)
UCnvrg Subroutine UCnvrg (Overriding the Program-Determined Convergence)
Customizing Loads
usrefl Subroutine usrefl (Changing Scalar Fields to User-Defined Values)
userpr Subroutine userpr (Changing Element Pressure Information)
usercv Subroutine usercv (Changing Element Face Convection Surface Information)
userfx Subroutine userfx (Changing Element Face Heat Flux Surface Information)
Access Subroutines
UanBeg / UanFin Access at the Beginning and End of Various Operations
USolBeg / USolFin
ULdBeg / ULdFin
UItBeg / UItFin
USsBeg / USsFin