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Far field shape functions for vibration of viscoelastic spaces | |
Author | Murugesu, Jeyakumaran |
Call Number | AIT Thesis no. ST-89-4 |
Subject(s) | Viscoelasticity |
Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
Publisher | Asian Institute of Technology |
Abstract | The two and three dimensional harmonic vibrations of homogeneous viscoelastic semi-infinite media, two viscoelastic semi - infinite perfectly bonded together and homogeneous viscoelastic infinite media a re considered in t his study. The goal of this study is to develop simple far-field shape function for an infinite element algorithm of multilayered viscoelastic spaces . In two dimensional problem inplane and anti-plane vibrations caused by symmetrical and anti-symmetrical modes about the vertical axis are considered. Vibrations caused by axisymmetric and aymmetric forces and pure torsion are considered in three dimensional problem. In each case, general solutions for displacements, resulting from the applied tractions, are obtained in an explicit form showing the contribution of body waves and surface waves . It is found t hat the continuous spectra of body waves composed of finite number of discrete shear waves and pressure waves . The far-field behaviour of the waves contributing to the body waves, are presented in the general form. The first term approximation of the shear waves and pressure waves are also investigated to facilitate the formulation of far-field shape functions for an infinite element algorithm of multilayered viscoelastic halfspace. |
Year | 1989 |
Type | Thesis |
School | School of Engineering and Technology (SET) |
Department | Other Field of Studies (No Department) |
Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
Chairperson(s) | Karasudhi, Pisidhi |
Examination Committee(s) | Worsak Kanok-Nukulchai ;Pichai Nimityongskul |
Scholarship Donor(s) | NORAD |
Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1989 |