NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
truss topology optimization with simultaneous analysis and designStrategies for topology optimization of trusses for minimum weight subject to stress and displacement constraints by Simultaneous Analysis and Design (SAND) are considered. The ground structure approach is used. A penalty function formulation of SAND is compared with an augmented Lagrangian formulation. The efficiency of SAND in handling combinations of general constraints is tested. A strategy for obtaining an optimal topology by minimizing the compliance of the truss is compared with a direct weight minimization solution to satisfy stress and displacement constraints. It is shown that for some problems, starting from the ground structure and using SAND is better than starting from a minimum compliance topology design and optimizing only the cross sections for minimum weight under stress and displacement constraints. A member elimination strategy to save CPU time is discussed.
Document ID
19920051916
Document Type
Conference Paper
Authors
Sankaranarayanan, S.
(NASA Langley Research Center Hampton, VA, United States)
Haftka, Raphael T.
(NASA Langley Research Center Hampton, VA, United States)
Kapania, Rakesh K.
(Virginia Polytechnic Institute and State University Blacksburg, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Subject Category
STRUCTURAL MECHANICS
Report/Patent Number
AIAA PAPER 92-2315
Meeting Information
AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference(Dallas, TX)
Funding Number(s)
CONTRACT_GRANT: NAG1-168
Distribution Limits
Public
Copyright
Other