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Elasticity matrix cE (SI unit: Pa) in Stress-charge form.
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Compliance Matrix sE (SI unit: 1/Pa) in Strain-charge form.
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Coupling matrix dET (SI unit: C/N) in Strain-charge form.
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Loss factor for electrical permittivity matrix εrS, eta_epsilonS, or Loss factor for electrical permittivity matrix εrT, eta_epsilonT: required when Dielectric Loss is present. The latter is valid only in Strain-Charge form.
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Working with Materials and Piezoelectric Materials Database in the COMSOL Multiphysics Reference Manual.
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