الفهرس 
GEOMETRICAL NONLINEAROnly 14 pages are availabe for public view
 |  | from | 434 |  |  |
| | | from | 434 | | |
Abstract
The main purpose of this thesis is to develop an optimum design
algoritlun for large skeletal structures considering both members’ cross
sections and geometry of the structure as the main design variables.
A numerical procedure for static analysis of nonlinear three-dimensional
structures is displayed in details, which is based on minimization of the
total potential energy. Optimality criteria methods are developed for
optimum design of large skeletal structures with displacement, stress, and
buckling constraints. An Optimality criterion rOC] is developed for the
optimum geometry design. A geometric optimization procedure is
proposed combining both the derived [OC] method and the generalized
compound scaling algorithm [GCS]. Numerical investigation is carried
out for the proposed hybrid method for optimum geometry design by
solving some of the published design problems. The proposed algoritlun
is applied to latticed dome structures and guyed towers considering the
members’ cross sections, the shape of the structure, and the initial
pretension in cables of the towers as the main design variables. The effect
of different design parameters on the optimum design of guyed towers is
also studied. Summary, conclusions, and suggestions for the future
researches are presented in the light of the obtained results.