In this article the general non-symmetric parametric form of the incremental secant stiffness matrix for nonlinear analysis of solids have been investigated to present a semi analytical sensitivity analysis approach for geometric nonlinear shape optimization. To approach this aim the analytical formulas of secant stiffness matrix are presented. The models were validated and used to perform inve...

This paper describes an integrated computer environment for the structural design of new power lines, the evaluation of existing lines, and their long term management. The detailed content of the data files that need to be accessed is presented. Implementation of commonly used design and archiving functions on a workstation should help design optimization, reduce design mistakes and resul consi...

Many methods have been developed for structural size and configuration optimization in which cross-sectional areas are usually assumed to be continuous. In most practical structural engineering design problems, however, the design variables are discrete. This paper proposes two efficient structural optimization methods based on the harmony search (HS) heuristic algorithm that treat both discret...