NED University Journal of Research
An International Journal
ISSN 2304-716X




MEASUREMENT OF SOIL-MODEL FOOTING DAMPING CHARACTERISTICS FROM RESONANCE TESTING

Author(s): Abdul Samad Khan

Volume: 1

No: 1

Pages: 31-37

Date: January 1994

Abstract:
The objective of the research reported in this paper is to measure the damping (D) of Soil-model footing system using resonance testing technique. A technique of applying a constant dynamic excitation force was used to vibrate the system. System damping was measured by the "band-width method" and compared with theoretical prediction from the Hsieh [I] and Lysmer [3] analyses. It is observed that radiation damping is constant for mass ratio (Bz) greater than 30 and varies considerably for mass ratio less than 10. Furthermore, the test results indicated that theory overestimates the radiation damping by about 30% to 50%.

Full Paper | Close Window      X |