Compensation of frequency response function measurements by inverse RCSA


Kiran K. , Satyanarayana H., Schmitz T.

INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, vol.121, pp.96-100, 2017 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 121
  • Publication Date: 2017
  • Doi Number: 10.1016/j.ijmachtools.2017.04.004
  • Title of Journal : INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
  • Page Numbers: pp.96-100

Abstract

This paper describes an analytical approach for compensating accelerometer-based (contact-type) modal testing results for both mass loading and cable energy dissipation (damping). The inverse Receptance Coupling Substructure Analysis (RCSA) approach is implemented, where a lumped parameter model of the accelerometer-cable is decoupled from the measured receptance (or frequency response function) to isolate the structure's receptance. Experimental results are presented for a 12.7 mm diameter cantilever rod, a 6.35 mm diameter cantilever rod, and clamped-clamped-clamped-free boundary condition thin ribs.