Communication Dans Un Congrès Année : 2016

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

Résumé

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.

Dates et versions

hal-01395991 , version 1 (13-11-2016)

Identifiants

Citer

Mario Di Maio, Alexandra Bozzo, Nicolas Peyret. Response phase mapping of nonlinear joint dynamics using continuous scanning LDV measurement method. 12TH INTERNATIONAL A.I.VE.LA. CONFERENCE ON VIBRATION MEASUREMENTS BY LASER AND NONCONTACT TECHNIQUES: Advances and Applications, Jun 2016, Ancona, Italy. ⟨10.1063/1.4952680⟩. ⟨hal-01395991⟩
105 Consultations
0 Téléchargements

Altmetric

Partager

  • More