The properties of each element are described in three tables of the preprocessor, /PREP7 section:
ET,1,Link1 ! 2D spar, Lesson 6, trusses ET,1,Beam3 ! 2D elastic beam ET,1,Link8 ! 3D spar, Lesson 6, trusses ET,2,Link10 ! 3D Tension-only spar, Lesson 6, trusses ET,1,Pipe16 ! Elastic straight pipe, Axial 1 ET,2,Link32 ! 2D thermal conduction bar ET,1,Link34 ! Thermal convection link ET,1,Plane42 ! 2D, 4-node structural solid, Lesson 4, axisymmetric cylinder ET,1,Plane55 ! 2D, 4-node thermal solid, Lesson 5, temperature in a 2D plate ET,1,Link68 ! Thermal-electrical line element ET,1,Plane82 ! 2D, 8-node structural solid, Lesson 9, stressed plate with hole ET,1,Shell93 ! 8-node structural shell Lesson 3, Ansys graphics mode
pi = 4*atan(1) ! Define pi symbol dia2 = 0.5 ! Define dia symbol R,1,(pi/4*dia2**2) ! Cross-sectional area for ET 1 R,1,dia2,(dia2/2) ! OD and wall thickness for ET 16 R,1,9.1,110,8 ! Area, Iz, height for beam ET 3 R,3,(SQRT(2)/3) ! Length / resistance for ET 68
Notice that mathematical operations such as (SQRT(2)/3) are allowed. Furthermore, you can also define constants such as pi and dia. Note: there is one R statement for each different property, not one for each element. For example, if R defines cross sectional area, and several elements have the same area, use only one R. Then define those elements after the corresponding REAL statement.
MP,EX,1,30e6 ! elastic modulus, steel MP,GXY,1,11.2E6 ! shear modulus, steel MP,DENS,1,0.284 ! mass density, steel lbs/cu in MP,HF,1,2 ! convection or film coefficient MP,KXX,2,0.5 ! thermal conductivity, concrete MP,ALPX,1,11.7e-6 ! thermal expansion coeff, steel MP,RSVX,1,1 ! electrical resistivity
MENG 421 | Lectures | Source Program -- Nodes and Elements -- Element-Property Tables -- Ansys index | Class assignments
Last revised: April 1, 2004 -- Copyright © 1997-2004 ARMiller