| Author | Gan, Hui Tiong |
| Call Number | AIT Thesis no. ST-80-06 |
| Subject(s) | Electronic data processing--Structures, Theory of
|
| 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 | In the last decade the field of computerized structural analysis has grown exponentially. This growth has been accompanied by an increase demand for finite element programs capable of solving large problems in computer system of limited storage capacity. In this study a computational procedure for the linear elastic static analysis of long unbranched structures, e.g. bridges and buildings, is presented. The frontal sub structuring scheme, a hybrid of the frontal and substructure methods, is employed. This scheme has proved to be suitable for the long unbranched structures of high uniformity in cross-section considered in this report. Its implementation generally results in a significant saving in storage requirement, and for structures with large number of repeated sub
structures, a significant saving in execution time, as compared to conventional finite element solution method. A computer program is then developed based on this frontal sub structuring scheme. The computer program consists of a base program which reads and prints finite element data for the structure and substructures, allocates storage, carries out a variety of book-keeping operations, assembles the elements and super elements, eliminates internal nodes of substructures and nodes of wave fronts, solves the equilibrium equations, and determines the displacement
response. The base program is combined with a library of element subroutines to produce the complete program. Subroutines for new elements can be developed
independently and added to the element library with relative ease. Subroutines for three dimensional truss and general shell are currently included.
The frontal sub structuring scheme is clearly illustrated and its computer implementation is outlined. Examples are tested to validify the program and also to register its efficiency in terms of storage requirement and execution time. A computer program user's guide and an illustrative example are included. |
| Year | 1980 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Worsak Kanok-Nukulchai |
| Examination Committee(s) | Karasudhi, Pisidhi ; Pichai Nimityongskul |
| Scholarship Donor(s) | Government of the United States of America |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1980 |