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  • Wind Turbine Blade - Physics Setup

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/prep7 !Call the Preprocessor

et,matid,181 !Specify the element type, shell 181
keyopt,matid,3,2 !Use full integration
mpdel,all,matid !Delete all previously assigned material properties
tbdel,all,matid !Delete all previouly assigned tabular data

MP,EX,2,101E9 !Define Young's Modulus: X Direction
MP,EY,2,101E9 !Define Young's Moduls: Y Direction
MP,EZ,2,101E9 !Define Young's Modulus: Z Direction

MP,PRXY,2,0.3 !Define Major Poisson's ratio XY
MP,PRYZ,2,0.3 !Define Major Poisson's ratio YZ
MP,PRXZ,2,0.3 !Define Majoy Poisson's ration XZ

*DIM,sth,TABLE,6,5,1, !Dimension The Table for the Thickness Function

! Begin of equation: .020
sth(0,0,1)= 0.0, -999
sth(2,0,1)= 0.0
sth(3,0,1)= 0.0
sth(4,0,1)= 0.0
sth(5,0,1)= 0.0
sth(6,0,1)= 0.0
sth(0,1,1)= 1.0, 99, 0, .10, 0, 0, 0
sth(0,2,1)= 0
sth(0,3,1)= 0
! End of equation: .020
!-->

sect,2,shell !Specify the section type
secfunction,%sth% !Apply the Varying Thickness Function

Prevent ANSYS from changing Material Properties

We need to create one more command in order to ensure that ANSYS uses the varying thickness. In the Outline window, right click Static Structural (B5) and select Insert > Commands. Copy and paste the code below into the command window

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Fixed Support

We will fix the ring at the end of the blade. To accomplish this, click on Static Structural (B5) to bring up the Environment menu bar. In the Environment menu bar, select Supports > Fixed Support. Next, make sure the edge selection filter is selected. Hold Ctrl, and click on the 2 edges that make up the ring at the end shoulder of the blade (see image below).

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When the surface have been selected, press Geometry > Apply in the Details window. Next, select Define By > Components. Define the Y Component as -1000 N.

We are now ready to set up the solution and solve.

Go to Step 5 - Solution
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