The Identification of a Distributed Parameter Model for a Flexible Structure,
Abstract
A develop a computational method is developed for the estimation of parameters in a distributed model for a flexible structure. The structure we consider (part of the 'RPL experiment') consists of a cantilevered beam with a thruster and linear accelerometer at the free end. The thruster is fed by a pressurized hose whose horizontal motion effects the transverse vibration of the beam. The Euler-Bernoulli theory is used to model the vibration of the beam and treat the hose thruster assembly as a lumped or point mass dashpot spring system at the tip. Measurements of linear acceleration at the tip are used to estimate the hose parameters (mass, stiffness, damping) and a Voigt-Kelvin viscoelastic structural damping parameter for the beam using a least squares fit to the data. Spline based approximations are considered to the hybrid (coupled ordinary and partial differential equations) systems; theoretical convergence results and numerical studies with both simulation and actual experimental data obtained from the structure are presented and discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1986
- Accession Number
- ADA174802
Entities
People
- H. Thomas Banks
- I. G. Rosen
- S. S. Gates
- Yaonan Wang
Organizations
- Brown University