Non-Axisymmetric Dynamic Response of Imperfectly Bonded Buried Orthotropic Thin Empty Cylindrical Shell Due to Incident Shear Wave (SH Wave)

Rakesh Singh Rajput, Sunil Kumar, Alok Chaubey and J. P. Dwivedi
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Rakesh Singh Rajput: Directorate of Technical Education, India
Sunil Kumar: Rajeev Gandhi Technical University, India
Alok Chaubey: Rajeev Gandhi Technical University, India
J. P. Dwivedi: It-Bhu, India

International Journal of Geotechnical Earthquake Engineering (IJGEE), 2011, vol. 2, issue 2, 40-56

Abstract: Non-axisymmetric dynamic response of imperfectly bonded buried orthotropic thin empty pipelines subjected to incident shear wave (SH-wave) is presented here. In the thin shell theory the effect of shear deformation and rotary inertia is not considered. The pipeline has been modeled as an infinite thin cylindrical shell imperfectly bonded to surrounding. A thin layer is assumed between the shell and the surrounding medium (soil) such that this layer possesses the properties of stiffness and damping both. The degree of imperfection of the bond is varied by changing the stiffness and the damping parameters of this layer. Although a general formulation including P-, SV-, and SH-wave excitations are presented, numerical results are given for the case of incident SH-waves only. Comparison of axisymmetric and non-axisymmetric responses are also furnished.

Date: 2011
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