Dynamic substructuring and reanalysis methods in a surrogate based design optimization environment

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Abstract

Abstract In light weight structure design, vibration control is necessary to meet strict stability requirements and to improve the fatigue life of structural components. Due to ever-increasing demands on products, it is generally more convenient to include vibration prerequisites in a design process instead of using vibration control devices on fixed designs. One of the main difficulties associated to design optimization of complex and/or large structures is the numerous computationally demanding Finite Element (FE) calculations. The objective of this research is to present a novel strategy for efficient and accurate optimization of vibration characteristics of structures. In the proposed strategy, a sub-structuring method is utilized. The FE model of the complete structure is partitioned, educed and then reassembled. This increases the computational efficiency of dynamic analyses. Moreover, this method is coupled with a novel reanalysis technique to speed up the repeated structural analyses. These methods are finally embedded in a surrogate-based design optimization procedure. An academic test problem is used for the validation of this novel approach. Keywords Dynamic substructuring · Reanalysis methods · Surrogate-based optimization
Original languageEnglish
Pages (from-to)129-138
Number of pages10
JournalStructural and multidisciplinary optimization
Volume45
Issue number1
DOIs
Publication statusPublished - 2012

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Substructuring
Vibration control
Vibration Control
Light weight structures
Vibration
Computational efficiency
Fixed Design
Optimization
Fatigue Life
Fatigue of materials
Computational Efficiency
Finite Element Model
Design Process
Test Problems
Speedup
Finite Element
Necessary
Design optimization
Requirements
Strategy

Keywords

  • IR-77614
  • METIS-272389
  • Onderzoek van algemene industriele aardMechanical engineering and technology

Cite this

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title = "Dynamic substructuring and reanalysis methods in a surrogate based design optimization environment",
abstract = "Abstract In light weight structure design, vibration control is necessary to meet strict stability requirements and to improve the fatigue life of structural components. Due to ever-increasing demands on products, it is generally more convenient to include vibration prerequisites in a design process instead of using vibration control devices on fixed designs. One of the main difficulties associated to design optimization of complex and/or large structures is the numerous computationally demanding Finite Element (FE) calculations. The objective of this research is to present a novel strategy for efficient and accurate optimization of vibration characteristics of structures. In the proposed strategy, a sub-structuring method is utilized. The FE model of the complete structure is partitioned, educed and then reassembled. This increases the computational efficiency of dynamic analyses. Moreover, this method is coupled with a novel reanalysis technique to speed up the repeated structural analyses. These methods are finally embedded in a surrogate-based design optimization procedure. An academic test problem is used for the validation of this novel approach. Keywords Dynamic substructuring · Reanalysis methods · Surrogate-based optimization",
keywords = "IR-77614, METIS-272389, Onderzoek van algemene industriele aardMechanical engineering and technology",
author = "Didem Akcay-Perdahcioglu and Geijselaers, {Hubertus J.M.} and Ellenbroek, {Marcellinus Hermannus Maria} and {de Boer}, Andries",
year = "2012",
doi = "10.1007/s00158-011-0681-4",
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T1 - Dynamic substructuring and reanalysis methods in a surrogate based design optimization environment

AU - Akcay-Perdahcioglu, Didem

AU - Geijselaers, Hubertus J.M.

AU - Ellenbroek, Marcellinus Hermannus Maria

AU - de Boer, Andries

PY - 2012

Y1 - 2012

N2 - Abstract In light weight structure design, vibration control is necessary to meet strict stability requirements and to improve the fatigue life of structural components. Due to ever-increasing demands on products, it is generally more convenient to include vibration prerequisites in a design process instead of using vibration control devices on fixed designs. One of the main difficulties associated to design optimization of complex and/or large structures is the numerous computationally demanding Finite Element (FE) calculations. The objective of this research is to present a novel strategy for efficient and accurate optimization of vibration characteristics of structures. In the proposed strategy, a sub-structuring method is utilized. The FE model of the complete structure is partitioned, educed and then reassembled. This increases the computational efficiency of dynamic analyses. Moreover, this method is coupled with a novel reanalysis technique to speed up the repeated structural analyses. These methods are finally embedded in a surrogate-based design optimization procedure. An academic test problem is used for the validation of this novel approach. Keywords Dynamic substructuring · Reanalysis methods · Surrogate-based optimization

AB - Abstract In light weight structure design, vibration control is necessary to meet strict stability requirements and to improve the fatigue life of structural components. Due to ever-increasing demands on products, it is generally more convenient to include vibration prerequisites in a design process instead of using vibration control devices on fixed designs. One of the main difficulties associated to design optimization of complex and/or large structures is the numerous computationally demanding Finite Element (FE) calculations. The objective of this research is to present a novel strategy for efficient and accurate optimization of vibration characteristics of structures. In the proposed strategy, a sub-structuring method is utilized. The FE model of the complete structure is partitioned, educed and then reassembled. This increases the computational efficiency of dynamic analyses. Moreover, this method is coupled with a novel reanalysis technique to speed up the repeated structural analyses. These methods are finally embedded in a surrogate-based design optimization procedure. An academic test problem is used for the validation of this novel approach. Keywords Dynamic substructuring · Reanalysis methods · Surrogate-based optimization

KW - IR-77614

KW - METIS-272389

KW - Onderzoek van algemene industriele aardMechanical engineering and technology

U2 - 10.1007/s00158-011-0681-4

DO - 10.1007/s00158-011-0681-4

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JO - Structural and multidisciplinary optimization

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