Accession Number:

ADB017334

Title:

ASOP-3: A Program for the Minimum-Weight Design of Structures Subjected to Strength and Deflection Constraints

Descriptive Note:

Final rept. 15 Jun 1975-15 Dec 1976

Corporate Author:

GRUMMAN AEROSPACE CORP BETHPAGE NY

Personal Author(s):

Report Date:

1976-12-01

Pagination or Media Count:

167.0

Abstract:

This volume presents the results of an effort to modify, extend and improve the usefulness of ASOP Automated Structural Optimization Program, originally documented in AFFDL-TR-70-118 and AFFDL TR-74-96. The new version of the program is named ASOP-3. The following improvements have been made Composite laminates with as many as six fiber directions, which may be arbitrary, can be accommodated in both stress and deflection-constraint resizing. In stress-constraint resizing, a laminate element is treated as a unit, and criteria consistent with current design practice for composites are used. A deflection constraint generalized as a linear combination of translational displacements at several structural nodes can be applied. This permits the treatment of constraints on lifting-surface twist and camber. Multiple deflection constraints can be treated in a limited, but practically important, class of problems by multiple submissions of single-constraint cases. The program output has been extensively revised to make it more readable. Results obtained by application of the program to models of two sample structures, a swept wing and a bomber fin, are presented.

Subject Categories:

  • Research and Experimental Aircraft
  • Structural Engineering and Building Technology
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE