Reform of skew plates, skew bridge decks and waffle slabs into elastic rectangular anisotropic plates | |
| Author | Arachchige, Nihal Dissanayake |
| Call Number | AIT Thesis no.ST-90-5 |
| Subject(s) | Elastic plates and shells Bridges--Floors |
| Note | A thesis submitted in partial fulfillments of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The formulation to obtain governing equation with respect to ske'Y coordinates and set of boundary conditions for skew plate is carried out by reforming the skew plates into rectangular anisotropic plates. The relationships of different parameters such as displacement, stress, strain and stiffness tensors are obtained for plane stress condition as initial formulation. Using such relationships the governing equation and well-posed boundary conditions for skew thin plate in bending is obtained by same way that adopted in Cartesian coordinate system for non skew plate in bending. Solution to governing equation are tried to obtain by proposing deflection functions. The deflection functions assumed in this study for different boundary value problems proved unsatisfactory as it violates boundary condition exceeding tolerable limits to have accurate results. Since deflection functions assumed do not yield satisfactory results the finite element method with skew plate flexure element with four nodes and three degrees of freedom per node is used to find solution to the governing equation. Results obtained from this method show close agreement with available results for most boundary value problems for skew angle less than 50°. For skew angle more than 50° cases results do not show close agreement with available results and also show poor convergence characteristics. |
| Year | 1990 |
| Type | Thesis |
| School | School of Civil Engineering |
| 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) | Varma, Mahesh ;Pichai Nimityongskul |
| Scholarship Donor(s) | Norwegian Government (NORAD) |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1990 |