Identification of nonlinear frequency response curves under shaker-structure interaction through force-controller-free phase-locked loop testing
Abstract
Abstract This paper presents an integrated approach for extracting nonlinear frequency response (NLFR) curves in systems affected by shaker-structure interaction. The approach leverages three distinct phase-locked loop (PLL) testing methods, each tailored for different levels of coupling effects. By resectioning the response surfaces obtained from the proposed PLL-based tests, the need for force controllers is eliminated. The technique is validated through numerical and experimental studies. Experiments conducted on nonlinear beam and plate structures illustrate the effectiveness of the proposed technique, even in the presence of coupled modes.
Fields of Study & Subjects
Bladed Disk Vibration Dynamics
Structural Health Monitoring Techniques
Vibration Control and Rheological Fluids
Publication details
- Journal / source
- Nonlinear Dynamics
- Publisher
- Springer Science and Business Media LLC
- Volume
- 114
- Issue
- 4
- Publication date
- 1 February 2026
- Language
- EN