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http://dx.doi.org/10.12989/sem.2017.62.1.113

Forced vibration of the elastic system consisting of the hollow cylinder and surrounding elastic medium under perfect and imperfect contact  

Akbarov, Surkay D. (Department of Mechanical Engineering, Yildiz Technical University)
Mehdiyev, Mahir A. (Institute of Mathematics and Mechanics of NAS Azerbaijan)
Publication Information
Structural Engineering and Mechanics / v.62, no.1, 2017 , pp. 113-123 More about this Journal
Abstract
The bi-material elastic system consisting of the circular hollow cylinder and the infinite elastic medium surrounding this cylinder is considered and it is assumed that on the inner free face of the cylinder a point-located axisymmetric time harmonic force, with respect to the cylinder's axis and which is uniformly distributed in the circumferential direction, acts. The shear-spring type imperfect contact conditions on the interface between the constituents are satisfied. The mathematical formulation of the problem is made within the scope of the exact equations of linear elastodynamics. The focus is on the frequency-response of the interface normal and shear stresses and the influence of the problem parameters, such as the ratio of modulus of elasticity, the ratio of the cylinder thickness to the cylinder radius, and the shear-spring type parameter which characterizes the degree of the contact imperfectness, on these responses. Corresponding numerical results are presented and discussed. In particular, it is established that the character of the influence of the contact imperfection on the frequency response of the interface stresses depends on the values of the vibration frequency of the external forces.
Keywords
forced vibration; frequency response; hollow cylinder; surrounding elastic medium; shear-spring type imperfection; underground structure;
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Times Cited By KSCI : 2  (Citation Analysis)
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