This tutorial was created using ANSYS 7.0 The purpose of this tutorial is to create and use 'paths' to provide extra detail during post processing. For example, one may want to determine the effects of stress concentrators along a certain path. Rather than plotting the entire contour plot, a plot of the stress along that path can be made.
In this tutorial, a steel plate measuring 100 mm X 200 mm X 10 mm will be used. Three holes are drilled through the vertical centerline of the plate. The plate is constrained in the y-direction at the bottom and a uniform, distributed load is pulling on the top of the plate.
finish /clear /title, Defining Paths /PREP7 ! create geometry BLC4,0,0,200,100 cyl4,50,50,10 cyl4,100,50,10 cyl4,150,50,10 asba,1,all et,1,plane2,,,3 ! Plane element R,1,10 ! thickness of plane mp,ex,1,200000 ! Young's Modulus mp,prxy,1,0.3 ! Poisson's ratio esize,5 ! mesh size amesh,all ! area mesh finish /solu ! apply constraints lsel,s,loc,y,0 ! select line for contraint application dl,all,,UY ! constrain all DOF's on this face allsel ! apply loads allsel ! restore entire selection lsel,s,loc,y,100 SFL,all,PRES,-2000/10 ! apply a pressure load on a line allsel solve ! solve resulting system of equations finish ! plot results /window,1,top ! define a window (top half of screen) /POST1 PLNSOL,S,eqv,2,1 ! plot stress in xx direction (deformed and undeformed edge) /window,1,off /noerase /window,2,bot ! define a window (bottom half of screen) nsel,all ! define nodes to define path nsel,s,loc,y,50 ! choose nodes half way through structure path,cutline,2,,1000 ! define a path labeled cutline ppath,1,,0,50 ! define endpoint nodes on path ppath,2,,200,50 PDEF,,S,eqv,AVG ! calculate equivalent stress on path nsel,all PLPAGM,SEQV,200,NODE ! show graph on plot with nodes