Torsional Response of Rigid Embedded Foundation

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Abstract
A series representation is obtained for the harmonic torsional response of a rigid massless semi-ellipsoidal foundation embedded in an elastic half space and subjected to the action of both an external torque and a plane nonvertically incident SH wave. Numerical results are presented for the torsional impedance function for different embedment ratios over a range of frequencies. Numerical results are also shown for the torsional response of embedded foundations to plane wave excitation with different angles of incidence. It is shown that obliquely incident SH waves may induce a large torsional response of the foundation.

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