The following example input shows how to model this piping system:
!
! Sample piping data input
!
/FILNAM,EXAMPLE
/TITLE, EXAMPLE PIPING INPUT
/UNITS,BIN ! A reminder that consistent units are U. S. Customary inches
!
/PREP7
! Define material properties for pipe elements
MP,EX,1,30e6
MP,PRXY,1,0.3
MP,ALPX,1,8e-6
MP,DENS,1,.283
PUNIT,1 ! Units are read as ft+in+fraction and converted to
! decimal inches
PSPEC,1,8,STD ! 8" standard pipe
POPT,B31.1 ! Piping analysis standard: ANSI B31.1
PTEMP,200 ! Temperature = 200°
PPRES,1000 ! Internal pressure = 1000 psi
PDRAG,,,-.2 ! Drag = 0.2 psi in -Z direction at any height (Y)
BRANCH,1,0+12,0+12 ! Start first pipe run at (12",12",0")
RUN,,7+4 ! Run 7'-4" in +Y direction
RUN,9+5+1/2 ! Run 9'-5 1/2" in +X direction
RUN,,,-8+4 ! Run 8'-4" in -Z direction
RUN,,8+4 ! Run 8'-4" in +Y direction
/PNUM,NODE,1
/VIEW,1,1,2,3
EPLOT ! Identify node number at which 2nd run starts
BRANCH,4 ! Start second pipe run at node 4
RUN,6+2+1/2 ! Run 6'-2 1/2" in +X direction
TEE,4,WT ! Insert a tee at node 4
/PNUM,DEFA
/PNUM,ELEM,1
EPLOT ! Identify element numbers for bend and miter inserts
BEND,1,2,SR ! Insert a "short-radius" bend between elements 1 and 2
MITER,2,3,LR,2 ! Insert a two-piece miter between elements 2 and 3
/PNUM,DEFA
/PNUM,NODE,1
! Zoom in on miter bend to identify nodes for spring hangers
/ZOOM, 1, 242.93 , 206.62 , -39.059 , 26.866
PSPRNG,14,TRAN,1e4,,0+12 ! Insert Y-direction spring at node 14
PSPRNG,16,TRAN,1e4,,0+12 ! Insert Y-direction spring at node 16
! List and display interpreted input data
/AUTO
/PNUM,DEFA
EPLOT
NLIST
ELIST
SFELIST
BFELIST
!Although two hangers are provided, more restraints are needed before proceeding to the solution.