Description: You can use user subroutine VDFLUX to define the distributed flux as a function of position, temperature, time, velocity, etc., for a group of points in a dynamic coupled thermal-stress analysis using explicit integration. The new user subroutine will be called at each flux integration point associated with surface-based or element-based nonuniform distributed flux definition in the analysis. User subroutine VDFLUX recognizes amplitude references if they appear with the nonuniform flux definition.