Browse > Article

A Study on the Longitudinal Vibration of Finite Elastic Medium using Laboratory Test  

Park, Ki-Shik (Department of Civil Engineering, Yeojoo Institute of Technology)
Publication Information
Journal of the Korean Society of Safety / v.17, no.2, 2002 , pp. 58-62 More about this Journal
Abstract
Longitudinal wave tests with finite elastic medium were performed to investigate the difference between measured values and theoretical values of propagation velocity and elasticity modulus. Each accelerometer was attached on finite elastic medium with same phase and different positions to check the particle motion. The results show that measured values of elasticity moduli from both time domain and frequency domain were similiar to theoretical value. Polarity of signal depends entirely on the phase of accelerometer. It proved that the propagation velocity and the particle motion are in the same direction when a compressive stress is applied. And also the propagation velocity and the particle motion depend on the intensity of the stress and material properties respectively.
Keywords
particle motion; propagation velocity; frequency domain; time domain; same phase;
Citations & Related Records
연도 인용수 순위
  • Reference
1 B. 0. Hardin, 'The Nature of Damping in Sands,' J. Soil Mech. and Found. Div., Proc. ASCE, Vol.91, No. SMl, Jan., pp. 63-97, 1965
2 R. V. Whitman, and F. V. Lawrence, 'Wave Velocities in Granular Soils,' J. Soil Mech. and Found. Div., Proc. ASCE, Vol. 89, No. SM5, Sept, pp. 112-118, 1963
3 R. L. Wegel, 'Earthquake Engineering,' Prentice- Hall, pp. 107-146, 1970
4 S. L. Kramer, and H. B. Seed, 'Initiation of Soil Liquefaction under Static Loading Condition,'Journal of Geotechnical Engineering, ASCE, Vol. 114, No. 4, Nov., pp.412-1430, 1988   DOI
5 F. E. Richart, and R. V. Whitman, 'Compahson of Footing Vibration Tests with Theory,' J. Soil Mech. and Found. Div., Proc. ASCE, Vol. 93, No. SM6, Nov., pp.143-168, 1967
6 F. E. Richart, and J. R. Hall, 'Vibrations of Soils and Foundations,' Prentice- Hall, pp. 41-92, 1970
7 S. L. Kramer, 'Geotechnical Earthquake Engi- neering,' Prentice-Hall, pp. 54-105, 1996