What location does ANSYS use to determine the pressure load defined
by a table array? Does it use the node location or the integration point
location?
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As shown in the ANSYS 9.0 example below, the nodal location is used by the code to determine the element pressure load. The Gauss points are clearly in the locations for which pressure should be applied, as shown, but the SFELIST output and the reactions are all zero. If you switch the pressure values, then the SFELIST pressures are all "1", which are the nodal values again. = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = fini /clear /dev,vect,1 /view,,1,2,3 /plopts,info,1 /psf,pres,norm,2 /title, Table Array Loading Test /prep7 et,1,SOLID45 ! full integration (2 X 2 X 2) r,1 mp,ex,1,30.0e6 mp,nuxy,1,0.30 block,0,1,0,1,0,1 esize,,1 vmesh,1 eplot fini /solu nsel,s,loc,x,0 d,all,all,0.0 nsel,all *dim,vpress,table,4,1,1,x vpress(1,0,1) = 0.0 ! row 1 heading vpress(2,0,1) = 0.01 ! row 2 heading vpress(3,0,1) = 0.99 ! row 3 heading vpress(4,0,1) = 1.00 ! row 4 heading vpress(0,1,1) = 0.0 ! column 1 heading (not needed for 1 column) !Pick one of the following groups of pressure values ... vpress(1,1,1) = 0.0 ! row 1, column 1 value (psi) vpress(2,1,1) = 1.0 ! row 2, column 1 value (psi) vpress(3,1,1) = 1.0 ! row 3, column 1 value (psi) vpress(4,1,1) = 0.0 ! row 4, column 1 value (psi) !!! vpress(1,1,1) = 1.0 ! row 1, column 1 value (psi) !!! vpress(2,1,1) = 0.0 ! row 2, column 1 value (psi) !!! vpress(3,1,1) = 0.0 ! row 3, column 1 value (psi) !!! vpress(4,1,1) = 1.0 ! row 4, column 1 value (psi) sfe,all,1,pres,,%vpress% ! variable pressure over face 1 of cube sfelist solve save fini /post1 set,last prrfor /eof = = = = = = == = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = For the uncommented out case: ============================= LIST ELEMENT SURFACE LOAD PRES FOR ALL SELECTED ELEMENTS ELEMENT LKEY FACE NODES REAL IMAGINARY 1 1 4 0.0000 0.0000 2 0.0000 0.0000 1 0.0000 0.0000 3 0.0000 0.0000 . . . PRINT REACTION SOLUTIONS PER NODE Table Array Loading Test ***** POST1 TOTAL REACTION CALCULATION LISTING ** LOAD STEP= 1 SUBSTEP= 1 TIME= 1.0000 LOAD CASE= 0 THE FOLLOWING X,Y,Z SOLUTIONS ARE IN GLOBAL COORDINATES NODE FX FY FZ 1 0.0000 0.0000 0.0000 2 0.0000 0.0000 0.0000 5 0.0000 0.0000 0.0000 8 0.0000 0.0000 0.0000 TOTAL VALUES VALUE 0.0000 0.0000 0.0000 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = For the commented out case: =========================== LIST ELEMENT SURFACE LOAD PRES FOR ALL SELECTED ELEMENTS ELEMENT LKEY FACE NODES REAL IMAGINARY 1 1 4 1.0000 0.0000 2 1.0000 0.0000 1 1.0000 0.0000 3 1.0000 0.0000 . . . PRINT REACTION SOLUTIONS PER NODE Table Array Loading Test ***** POST1 TOTAL REACTION CALCULATION LISTING ** LOAD STEP= 1 SUBSTEP= 1 TIME= 1.0000 LOAD CASE= 0 THE FOLLOWING X,Y,Z SOLUTIONS ARE IN GLOBAL COORDINATES NODE FX FY FZ 1 -0.25000 0.31015E-01 -0.31250 2 -0.25000 -0.31015E-01 -0.31250 5 0.25000 0.31015E-01 -0.18750 8 0.25000 -0.31015E-01 -0.18750 TOTAL VALUES VALUE -0.30531E-15 -0.41633E-16 -1.0000 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = . |
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