Skip to main content
Top

2024 | OriginalPaper | Chapter

4. Using Modal Acceleration to Compare Two Environments of an Aerospace Component

Authors : Tyler F. Schoenherr, Moheimin Khan

Published in: Dynamic Environments Testing, Volume 7

Publisher: Springer Nature Switzerland

Activate our intelligent search to find suitable subject content or patents.

search-config
loading …

Abstract

Engineers are interested in the ability to compare dynamic environments for many reasons. Current methods of comparing environments compare the measured acceleration at the same physical point via a direct measurement during the two environments. Comparing the acceleration at a defined point only provides a comparison of response at that location. However, the stress and strain of the structure are defined by the global response of all the points in a structure. This chapter uses modal filtering to transform a set of measurements at physical degrees of freedom into modal degrees of freedom that quantify the global response of the structure. Once the global response of the structure is quantified, two environments can be more reliably and accurately compared. This chapter compares the response of an aerospace component in a service environment to the response of the same component in a laboratory test environment. The comparison first compares the mode shapes between the two environments. Once it is determined that the same mode shapes are present in both configurations, the modal accelerations are compared in order to determine the similarity of the global response of the component.

Dont have a licence yet? Then find out more about our products and how to get one now:

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!

Springer Professional "Wirtschaft"

Online-Abonnement

Mit Springer Professional "Wirtschaft" erhalten Sie Zugriff auf:

  • über 67.000 Bücher
  • über 340 Zeitschriften

aus folgenden Fachgebieten:

  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Versicherung + Risiko




Jetzt Wissensvorsprung sichern!

Literature
1.
go back to reference Daborn, P.: Smarter Dynamic Testing of Critical Structures. Thesis, 2014 Daborn, P.: Smarter Dynamic Testing of Critical Structures. Thesis, 2014
2.
go back to reference Carne, T.G., Bateman, V.I., Dohrman, C.R.: Force reconstruction using the inverse of the mode-shape matrix. Report SAND-90-2281C, Sandia National Labs., Albuquerque, NM (United States), 1991 Carne, T.G., Bateman, V.I., Dohrman, C.R.: Force reconstruction using the inverse of the mode-shape matrix. Report SAND-90-2281C, Sandia National Labs., Albuquerque, NM (United States), 1991
3.
go back to reference Mayes, R.L., Klenke, S.E.: SMAC modal parameter extraction package. Shock Vib. Digest 32(1), 57 (2000) Mayes, R.L., Klenke, S.E.: SMAC modal parameter extraction package. Shock Vib. Digest 32(1), 57 (2000)
4.
go back to reference O’Callahan, J.C.: System equivalent reduction expansion process. In: Proc. of the 7th Inter. Modal Analysis Conf., 1989 O’Callahan, J.C.: System equivalent reduction expansion process. In: Proc. of the 7th Inter. Modal Analysis Conf., 1989
5.
go back to reference Schoenherr, T.F., Rouse, J.W., Harvie, J.: Characterizing dynamic test fixtures through the modal projection error. Report SAND2020-1119, Sandia National Lab.(SNL-NM), Albuquerque, NM (United States), 2020 Schoenherr, T.F., Rouse, J.W., Harvie, J.: Characterizing dynamic test fixtures through the modal projection error. Report SAND2020-1119, Sandia National Lab.(SNL-NM), Albuquerque, NM (United States), 2020
6.
go back to reference Schoenherr, T.F., Paripovic, J.: Using Modal Projection Error to Evaluate SEREP Modal Expansion, pp. 111–138. Springer, Berlin (2022) Schoenherr, T.F., Paripovic, J.: Using Modal Projection Error to Evaluate SEREP Modal Expansion, pp. 111–138. Springer, Berlin (2022)
7.
go back to reference Eriten, M., Kurt, M., Luo, G., McFarland, D.M., Bergman, L.A., Vakakis, A.F.: Nonlinear system identification of frictional effects in a beam with a bolted joint connection. Mech. Syst. Signal Process. 39(1–2), 245–264 (2013)CrossRef Eriten, M., Kurt, M., Luo, G., McFarland, D.M., Bergman, L.A., Vakakis, A.F.: Nonlinear system identification of frictional effects in a beam with a bolted joint connection. Mech. Syst. Signal Process. 39(1–2), 245–264 (2013)CrossRef
Metadata
Title
Using Modal Acceleration to Compare Two Environments of an Aerospace Component
Authors
Tyler F. Schoenherr
Moheimin Khan
Copyright Year
2024
DOI
https://doi.org/10.1007/978-3-031-34930-0_4