Far field shape functions for vibrations of elastic spaces | |
| Author | Rajaratnam, Praemachandran |
| Call Number | AIT Thesis no. ST-89-13 |
| Subject(s) | Structural dynamics Finite element method |
| Note | A thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | In this study the far field shape functions in the three different model of half spaces such as homogeneous half space a homogeneous full space and two homogeneous half spaces bonded together for the case of two dimensional a nd three dimensional problems are considered. The models are subjected to various harmonic vibrations such as inplane axisymmetric , asymmetric and antiplant axisymmetric , antisymmetric harmonic vibration for the case of two dimensional problem. In the case of three dimensional problem, the vibration cases considered are axisymmetric , asymmetric point load and pure torsion. For radiating element the shape functions are derived as the combination of above cases. It is found that the body wave solution can be separated into pressure and shear waves with the oscillating circular functions whose periods of oscillation are constant, which depends on underlying a nd overlying media pressure and shear wave nondimensionalized numbers. To get the approximate shape function in intermediate field, a calibration technique is suggested. |
| 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) | Ueda, Tamon ;Pichai Nimityongslrnl |
| Scholarship Donor(s) | Norwegian Government (NORAD) |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1989 |