Strain gradient theory in orthogonal curvilinear coordinates
Inthisshortnote,generalformulationsoftheToupin–Mindlinstraingradienttheoryinorthogonalcurvilinearcoor-
dinatesystemsarederived,andarethenspecifiedforthecasesofcylindricalcoordinatesandsphericalcoordinates.Expres-
sionsconvenientforpracticalusearepresentedforthec
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