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Applying Non-Uniform Distributed Forces/Pressures in Abaqus
I am working on a problem involving wind-tunnel testing of a component. Basically, the component has numerous pressure tappings on its surface to measure the pressure in the wind tunnel. I am required to apply these pressure measurements into the Abaqus model. I am looking for some suggestions as to how best to accomplish this. Basically, the output from the pressure tappings looks like this (I moitted some details...):
SN X Y Z CP Local Pressure (Nm-2) NX NY NZ Wetted Area (m2) Normal Force (N) Fx Fy Fz
1 0.25 0.0065 -0.0827 0.793 58664.636 0.3144 -0.0745 0.9464 8.87740E-07 5.208E-02 1.801E-02 -3.878E-03 5.914E-02
BTW, there are>1000 data points.
My first guess would be to try and somehow input the forces (Fx Fy Fz) into the model using subroutine, but then I thought maybe the pressure data would be more efficient.
Questions:
1. Which is easier to input into the FEA model? Pressure or Forces?
2. How can I discretize the mesh such that the forces can be loaded exactly into its corresponding coordinates?
3. If pressure is used, can I curve fit the pressure data to derive an analytical field to serve as the distribution?How does wetted area come into the picture?
Thanks!
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