BALANCING ENERGY TO ESTIMATE DAMPING IN A FORCED OSCILLATOR WITHCOMPLIANT CONTACT

摘要

This work identifies damping parameters from compliant-contact vibration systems using energy dissipation concept. To develop the identification algorithms, the energy loss as registered in the force-displacement relationship of the real system is balanced against that of a theoretical model incorporating with an idealized compliant contact. Two approaches, including one based on the harmonic response assumption and the other directly integrating the system responses, are developed. Numerical investigations are performed to illustrate the reliability of the identification algorithms.