Skip to main content
Erschienen in: Structural and Multidisciplinary Optimization 5/2021

12.01.2021 | Research Paper

High natural frequency gap topology optimization of bi-material elastic structures and band gap analysis

verfasst von: Heitor Nigro Lopes, Jarir Mahfoud, Renato Pavanello

Erschienen in: Structural and Multidisciplinary Optimization | Ausgabe 5/2021

Einloggen

Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.

search-config
loading …

Abstract

This work aims to perform the topology optimizationof frequency separation interval of continuous elastic bi-dimensional structures in the high-frequency domain. The studied structures are composed of two materials. The proposed algorithm is an adaptation of the Bidirectional Evolutionary Structural Optimization (BESO). As the modal density is high in this frequency domain, the objective function, based on the weighted natural frequency, is formulated to consider an important number of modes. To implement the algorithm, a mode tracking method is necessary to avoid problems stemming from mode-shifting and local modes. As the obtained results by using structural dynamics analysis present quasi-periodic topology, further calculations are done to compare the results with and without imposed periodicity. A dispersion analysis based on wave propagation theory is performed by using the unit cell previously obtained from the structural optimization to investigate the band gap phenomenon. The resulting band gaps from the dispersion analysis are compared with respect to the dynamic behavior of the structure. The topology optimization methodology and the wave propagation analysis are assessed for different boundary conditions and geometries. Comparison between both analyses shows that the influence of the boundary conditions on the frequency separation interval is small. However, the influence from the geometry is more pronounced. The optimization procedure does not present significant numerical instability. The obtained topologies are well-defined and easily manufacturable, and the obtained natural frequency separation intervals are satisfactory.

Sie haben noch keine Lizenz? Dann Informieren Sie sich jetzt über unsere Produkte:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 102.000 Bücher
  • über 537 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 67.000 Bücher
  • über 390 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Maschinenbau + Werkstoffe




 

Jetzt Wissensvorsprung sichern!

Anhänge
Nur mit Berechtigung zugänglich
Literatur
Zurück zum Zitat Ansola R, Veguería E, Canales J, Tárrago JA (2007) A simple evolutionary topology optimization procedure for compliant mechanism design. Fin Elem Anal Des 44(1–2):53–62CrossRef Ansola R, Veguería E, Canales J, Tárrago JA (2007) A simple evolutionary topology optimization procedure for compliant mechanism design. Fin Elem Anal Des 44(1–2):53–62CrossRef
Zurück zum Zitat Brillouin L (1953) Wave propagation in periodic structures: electric filters and crystal lattices, 2nd edn. Dover Publications, New YorkMATH Brillouin L (1953) Wave propagation in periodic structures: electric filters and crystal lattices, 2nd edn. Dover Publications, New YorkMATH
Zurück zum Zitat Ewins DJ (1984) Modal testing: theory and practice, vol 15. Research Studies Press, Letchworth Ewins DJ (1984) Modal testing: theory and practice, vol 15. Research Studies Press, Letchworth
Zurück zum Zitat Huang X, Xie M (2010) Evolutionary topology optimization of continuum structures: methods and applications. Wiley, New YorkMATHCrossRef Huang X, Xie M (2010) Evolutionary topology optimization of continuum structures: methods and applications. Wiley, New YorkMATHCrossRef
Zurück zum Zitat Kittel C, et al. (1976) Introduction to solid state physics, vol 8. Wiley, New York Kittel C, et al. (1976) Introduction to solid state physics, vol 8. Wiley, New York
Zurück zum Zitat Munk DJ, Kipouros T, Vio GA, Parks GT, Steven GP (2018) On the effect of fluid-structure interactions and choice of algorithm in multi-physics topology optimisation. Finite Elem Anal Des 145:32–54CrossRef Munk DJ, Kipouros T, Vio GA, Parks GT, Steven GP (2018) On the effect of fluid-structure interactions and choice of algorithm in multi-physics topology optimisation. Finite Elem Anal Des 145:32–54CrossRef
Zurück zum Zitat Sigmund O, Jensen JS (2003) Systematic design of phononic band-gap materials and structures by topology optimization. Philo Trans Math Phys Eng Sci 361(1806,):1001–1019MathSciNetMATHCrossRef Sigmund O, Jensen JS (2003) Systematic design of phononic band-gap materials and structures by topology optimization. Philo Trans Math Phys Eng Sci 361(1806,):1001–1019MathSciNetMATHCrossRef
Zurück zum Zitat Sigmund O, Torquato S (1997) Design of materials with extreme thermal expansion using a three-phase topology optimization method. J Mech Phys Solids 45(6):1037–1067MathSciNetCrossRef Sigmund O, Torquato S (1997) Design of materials with extreme thermal expansion using a three-phase topology optimization method. J Mech Phys Solids 45(6):1037–1067MathSciNetCrossRef
Zurück zum Zitat Zhao F (2014) A nodal variable eso (beso) method for structural topology optimization. Finite Elem Anal Des 86:34–40MathSciNetCrossRef Zhao F (2014) A nodal variable eso (beso) method for structural topology optimization. Finite Elem Anal Des 86:34–40MathSciNetCrossRef
Metadaten
Titel
High natural frequency gap topology optimization of bi-material elastic structures and band gap analysis
verfasst von
Heitor Nigro Lopes
Jarir Mahfoud
Renato Pavanello
Publikationsdatum
12.01.2021
Verlag
Springer Berlin Heidelberg
Erschienen in
Structural and Multidisciplinary Optimization / Ausgabe 5/2021
Print ISSN: 1615-147X
Elektronische ISSN: 1615-1488
DOI
https://doi.org/10.1007/s00158-020-02811-0

Weitere Artikel der Ausgabe 5/2021

Structural and Multidisciplinary Optimization 5/2021 Zur Ausgabe

    Marktübersichten

    Die im Laufe eines Jahres in der „adhäsion“ veröffentlichten Marktübersichten helfen Anwendern verschiedenster Branchen, sich einen gezielten Überblick über Lieferantenangebote zu verschaffen.