Abstract
A piezoelectric strip of finite width and thickness is placed on top of anisotropic elastic half-space. It operates in actuator mode and a time harmonicvoltage is thus applied across it. The piezoelectric material is of type6mm oriented so that a 2D antiplane (scalar) problem results. By Fourier series expansions theproblem is solved exactly and this result is compared to the case when the piezoelectricstrip is replaced by an effective boundary condition, which is derived by series expansionsin the thickness coordinate in the piezoelectric strip. At low frequencies the results agreevery well and this corresponds to the situation usually met in practice. In general, theeffective boundary condition should be easier to apply and it is in particular noted that thisis the case when using a FEM program where the option of a piezoelectric material isusually not available.
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