This chapter discusses additional user programs that can be run with Abaqus. It provides an overview of the following enhancements:

• “User subroutine UINTER available in mode-based procedures,” Section 14.1

• “User subroutine VDFLUX to specify nonuniform distributed fluxes,” Section 14.2

• “User-defined fluid pipe friction available for fluid pipe elements,” Section 14.3

• “User-defined fluid pipe connector loss available for fluid pipe elements,” Section 14.4

• “User-defined valve behavior available for fluid pipe elements,” Section 14.5

• “User-defined viscous behavior for materials defined within the parallel rheological framework,” Section 14.6

• “Allocatable arrays of variable precision,” Section 14.7

• “Allocatable arrays of user-defined types,” Section 14.8

• “Plug-in for resetting midside nodes,” Section 14.9