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.