An approximation method for configuration optimization of trussesTwo- and three-dimensional elastic trusses are designed for minimum weight by varying the areas of the members and the location of the joints. Constraints on member stresses and Euler buckling are imposed and multiple static loading conditions are considered. The method presented here utilizes an approximate structural analysis based on first order Taylor series expansions of the member forces. A numerical optimizer minimizes the weight of the truss using information from the approximate structural analysis. Comparisons with results from other methods are made. It is shown that the method of forming an approximate structural analysis based on linearized member forces leads to a highly efficient method of truss configuration optimization.
Document ID
19880045124
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hansen, Scott R. (Engineering Design Optimization, Inc. Santa Barbara, CA, United States)
Vanderplaats, Garret N. (Engineering Design Optimization, Inc. Santa Barbara, CA, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Subject Category
Structural Mechanics
Report/Patent Number
AIAA PAPER 88-2432
Meeting Information
Meeting: Structures, Structural Dynamics and Materials Conference