Hello，everyone， Genius and wisdom. Recently, piezoelectric materials have been customized, but the non-convergence and inconsistency of initial value are occured in the simulation model. Then I modified the properties of piezoelectric materials in the comsol material library（Elastic matrix Coupling matrix），these problems will also occur. The number of decimal places of the parameters in the material library is consistent， see picture. How can I customize materials correctly.
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