Accession Number : AD0785564

Title :   On Improving Efficiency of an Algorithm for Structural Optimization and a User's Manual for Program TRUSSOPT2.

Descriptive Note : Interim technical rept. 15 Oct 73-May 74,

Corporate Author : IOWA UNIV IOWA CITY DEPT OF MECHANICS AND HYDRAULICS

Personal Author(s) : Arora,J. S.

Report Date : JUN 1974

Pagination or Media Count : 96

Abstract : In this report, an improved algorithm for optimal design of structures is presented. The improvements are based on the extension of ideas of state space optimal control theory. The constraint set is divided into four distinct subsets and special characteristics of these subsets are exploited to improve efficiency of the algorithm. Some further improvements in structural analysis, design sensitivity analysis and optimum design change routines, for structures analyzed by the finite-element techniques, are suggested. Several optimum designs for three truss structures are obtained. The computational times obtained herein are considerably reduced, by a factor of fifteen in some cases. (Author)

Descriptors :   *Trusses, *Stresses, *Computer programs, Control theory, Partial differential equations, Matrices(Mathematics), Buckling, Computations, Instruction manuals

Subject Categories : Computer Programming and Software
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE