Author(s)

J. Finckenor, P. Rogers, N. Otte & M. Bevill

Abstract

CORSSTol is a computer program in which a closed form skin stringer cylinder analysis is linked to a numerical optimizer to provide preliminary design dimensions and weights. The objective function is weight. The design variables are the stringer height, thicknesses, width, and number, and the skin thickness. The limiting constraints are skin buckling, stringer column buckling, local stringer buckling, stringer crippling, general cylinder buckling, and allowable material stress. CORSSTol also utilizes a methodology for computationally examining the sensitivity of optimum dimensions to tolerances. After an initial optimization without tolerances, the same functions are used to optimize within user provided tolerance bands. The objective is to minimize the maximum material conditio

Keywords