Author: Ben Mullen, Cornell University Problem Specification |
Because the thickness of the blade varies, we need to set the material via commands. First, we will create a command that governs the material properties of the outer surface of the blade. To create a command, right click on the Outer Surface surface body, and select Insert > Commands. In the command prompt, insert the following:
/prep7 !Call the Preprocessor et,matid,181 !Specify the element type, shell 181 MP,EX,1,33E9 !Define Young's Modulus: X Direction MP,PRXY,1,0.3 !Define Major Poisson's ratio XY |
Now, we need to set up the varying thickness function governing the blade's thickness. To do this, we will need to open ANSYS APDL. To open, go to Start > All Programs > ANSYS 13.0 > Mechanical APDL (ANSYS). Once ANSYS APDL opens, go to Parameters > Functions > Define/Edit. The function that will drive the thickness is 0.030 - 0.00048485X where X is the distance from the origin along the X-axis. In the Result text box, type .03 - 0.00048485*
, then, to input the x variable, open the drop down menu next that is defaulted to Time and change it to X.
Press ENTER. Then in the Function Editor window, go to File > Save. Change the Save as type to All Files, and name the file vth.txt
. Once you save, you may close ANSYS APDL.
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