Response phase mapping of nonlinear joint dynamics using continuous scanning LDV measurement method

Dario Di Maio, A. Bozzo, Nicolas Peyret

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

1 Citation (Scopus)
345 Downloads (Pure)


This study aims to present a novel work aimed at locating discrete nonlinearities in mechanical assemblies. The long term objective is to develop a new metric for detecting and locating nonlinearities using Scanning LDV systems (SLDV). This new metric will help to improve the modal updating, or validation, of mechanical assemblies presenting discrete and sparse nonlinearities. It is well established that SLDV systems can scan vibrating structures with high density of measurement points and produc e highly defined Operational Deflection Shapes (ODSs). This paper will present some insights on how to use response phase mapping for locating nonlinearities of a bolted flange. This type of structure presents two types of nonlinearities, which are geometr ical and frictional joints. The interest is focussed on the frictional joints and, therefore, the ability to locate which joint s are responsible for nonlinearity is seen highly valuable for the model validation activities.
Original languageEnglish
Title of host publicationProceedings of the 12th International AIVELA Conference on Vibration Measurements by Laser and Noncontact Techniques
Subtitle of host publicationAdvances and Applications
PublisherAmerican Institute of Physics (AIP)
Number of pages14
ISBN (Print)9780735413979
Publication statusPublished - 28 Jun 2016

Publication series

NameAIP Conference Proceedings
PublisherAmerican Institute of Physics
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


  • ODS
  • nonlinearities
  • phase mapping
  • SLDV

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