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piezo electrics

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proEdj

Mechanical
Joined
Dec 6, 2004
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25
I am modeling a piezo electric slab with coupled field elements. I have activated the following dof's: ux,uy,uz,and volt. I believe that one of my constitutive equation then should be the following:

electric flux =(stress*compliance)+(piezo matrix*E field)

in the absence of electric flux D1=D2=D3=0 and with uniaxial stress applied sigma33=#, the constitutive relationship should reduce to the following:

E33=(-sigma33*d33)/e3

The ansys results to not correlate. Please advise.
 
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