Accession Number:

AD0688489

Title:

ENERGY DISTRIBUTION IN AN OPTIMUM STRUCTURAL DESIGN,

Descriptive Note:

Corporate Author:

AIR FORCE FLIGHT DYNAMICS LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1969-03-01

Pagination or Media Count:

70.0

Abstract:

An automated procedure is presented for minimum weight design of structures. It is an iterative procedure in which the design for the next cycle is determined by the study of the strain energy distribution in the present cycle. The displacement method of analysis is used in developing the method. Other methods of analysis which have the capability to determine the strain energy in various parts of the structure should be applicable. Designs in the presence of stress constraints and stress and displacement constraints are also considered. Where there are only stress constraints, a simple iteration based on the study of the energy distribution is adequate. In the presence of displacement constraints, the design is carried out in two stages. The first stage of iteration is similar to that in stress constraint problems and the second stage is based on a search procedure. Examples of two and three dimensional bar structures are presented to illustrate the effectiveness of the method. It proved to be extremely efficient in arriving at minimum weight structures. Author

Subject Categories:

  • Computer Hardware
  • Structural Engineering and Building Technology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE