Shear Mode Stacking Coefficients

The implications of Remark 5.5 are summarized in Table 5.3 for the stacking of material phases transverse to the fiber direction with respect to fields associated with the shear modes. These are decoupled of one another the electrostatic fields in the ej- and c2-directions interact with the shear fields in the e2-e3-plane and e3-ei-plane, respectively the ei-e2-plane transverse to the fiber direction is free of piezoelectric coupling, see Eqs. (4.20) and (4.21). 

Direction Stress/El. Flux Density Strain/El. Field Strength 

Since the coupled fields have an agreeing direction, they are subjected to the same kind of assumption of Remark 5.5. Hence, the macroscopic constitutive submatrices Gj, Gf, G2, and G2, where the upper index is associated with the stacking direction and the lower with the agreeing direction of the coupled 

The plane transverse to the fiber direction is always involved with the stacking in the considered directions. Thus, for both directions, the macroscopic stress component T12 of the entirely decoupled shear mode coincides with those of the individual phases and the resulting shear stiffnesses Cgg and Cgg only differ by the participating directional fiber fraction  

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