Why does the free thermal expansion of a piezoelectric cube produce a large voltage?
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This is defect 79830, which has been fixed for 12.0. We do not account for the "thermal strain charge" in our piezoelectric FE formulation. The "thermal strain charge" load Q is similar to the thermal strain force {Fth} we apply as an element load when a temperature body load is applied. This is why we were getting an electrical response to the thermal strain. |
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