Minimum-weight design with piecewise constant specific stiffness |
| |
Authors: | C Y Sheu W Prager |
| |
Institution: | (1) Department of the Aerospace and Mechanical Engineering Sciences, University of California at San Diego, La Jolla, California |
| |
Abstract: | Much of the literature on minimum-weight design is concerned with structures with continuously varying dimensions. Structures of this kind achieve an absolute minimum of weight and thereby provide a useful standard of comparison, but their manufacturing cost is prohibitive in most applications. As a step toward the establishment of optimality conditions for more practical structures, the present paper discusses optimal design of sandwich beams and frames with segmentwise constant cross sections. Optimality is shown to require that the mean square stress in the face sheets has the same value for all segments. The use of the optimality condition is illustrated by examples.This research was supported by the Advanced Research Projects Agency, Project DEFENDER, and was monitored by the US Army Research Office-Durham, Contract No. DA-31-124-ARO-D-257. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|