OPTIMIZATION OF COMPLEX STRUCTURES TO SATISFY STATIC, DYNAMIC AND AEROELASTIC REQUIREMENTS.

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A structural optimization problem is considered in which the design requirements include restrictions on the strength, stability, frequency and flutter characteristics of the structure. One of the central concerns of this phase of the work has been to overcome the problems inherent in analyzing the dynamic and aeroelastic behavior of structures with many degrees of freedom. The multiweb delta wing structure under supersonic flight conditions is the model upon which this exploratory study is based. The finite element idealization, with three different kinds of elements, is used to model the wing structure. The design problem is formulated as a minimum weight optimization problem and is solved by using nonlinear programming techniques. Computationally efficient schemes are developed for the necessary derivatives of the behavior constraints. Numerical examples are presented to illustrate the feasibility and the computational effectiveness of the method.

Original languageEnglish
Pages (from-to)249-269
Number of pages21
JournalInternational Journal for Numerical Methods in Engineering
Volume8
Issue number2
StatePublished - Jan 1 1974
Externally publishedYes

Fingerprint

Complex Structure
Frequency stability
Optimization
Structural optimization
Requirements
Degrees of freedom (mechanics)
Nonlinear programming
Optimization Problem
Derivatives
Flutter
Structural Optimization
Nonlinear Programming
Degree of freedom
Finite Element
Restriction
Derivative
Numerical Examples
Necessary
Model
Design

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Computational Mechanics
  • Applied Mathematics

Cite this

@article{155dc7186a654d4d915e9e0e39176c78,
title = "OPTIMIZATION OF COMPLEX STRUCTURES TO SATISFY STATIC, DYNAMIC AND AEROELASTIC REQUIREMENTS.",
abstract = "A structural optimization problem is considered in which the design requirements include restrictions on the strength, stability, frequency and flutter characteristics of the structure. One of the central concerns of this phase of the work has been to overcome the problems inherent in analyzing the dynamic and aeroelastic behavior of structures with many degrees of freedom. The multiweb delta wing structure under supersonic flight conditions is the model upon which this exploratory study is based. The finite element idealization, with three different kinds of elements, is used to model the wing structure. The design problem is formulated as a minimum weight optimization problem and is solved by using nonlinear programming techniques. Computationally efficient schemes are developed for the necessary derivatives of the behavior constraints. Numerical examples are presented to illustrate the feasibility and the computational effectiveness of the method.",
author = "Rao, {Singiresu S}",
year = "1974",
month = "1",
day = "1",
language = "English",
volume = "8",
pages = "249--269",
journal = "International Journal for Numerical Methods in Engineering",
issn = "0029-5981",
publisher = "John Wiley and Sons Ltd",
number = "2",

}

TY - JOUR

T1 - OPTIMIZATION OF COMPLEX STRUCTURES TO SATISFY STATIC, DYNAMIC AND AEROELASTIC REQUIREMENTS.

AU - Rao, Singiresu S

PY - 1974/1/1

Y1 - 1974/1/1

N2 - A structural optimization problem is considered in which the design requirements include restrictions on the strength, stability, frequency and flutter characteristics of the structure. One of the central concerns of this phase of the work has been to overcome the problems inherent in analyzing the dynamic and aeroelastic behavior of structures with many degrees of freedom. The multiweb delta wing structure under supersonic flight conditions is the model upon which this exploratory study is based. The finite element idealization, with three different kinds of elements, is used to model the wing structure. The design problem is formulated as a minimum weight optimization problem and is solved by using nonlinear programming techniques. Computationally efficient schemes are developed for the necessary derivatives of the behavior constraints. Numerical examples are presented to illustrate the feasibility and the computational effectiveness of the method.

AB - A structural optimization problem is considered in which the design requirements include restrictions on the strength, stability, frequency and flutter characteristics of the structure. One of the central concerns of this phase of the work has been to overcome the problems inherent in analyzing the dynamic and aeroelastic behavior of structures with many degrees of freedom. The multiweb delta wing structure under supersonic flight conditions is the model upon which this exploratory study is based. The finite element idealization, with three different kinds of elements, is used to model the wing structure. The design problem is formulated as a minimum weight optimization problem and is solved by using nonlinear programming techniques. Computationally efficient schemes are developed for the necessary derivatives of the behavior constraints. Numerical examples are presented to illustrate the feasibility and the computational effectiveness of the method.

UR - http://www.scopus.com/inward/record.url?scp=0015989149&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0015989149&partnerID=8YFLogxK

M3 - Article

VL - 8

SP - 249

EP - 269

JO - International Journal for Numerical Methods in Engineering

JF - International Journal for Numerical Methods in Engineering

SN - 0029-5981

IS - 2

ER -