Accession Number:

AD0668175

Title:

FILTERING CHARACTERISTICS OF A LONG CYLINDRICAL STEEL BAR WITH DISCONTINUITIES IN ITS CROSS-SECTIONAL AREA.

Descriptive Note:

Technical rept.,

Corporate Author:

HOUSTON UNIV TEX DEPT OF MECHANICAL ENGINEERING

Personal Author(s):

Report Date:

1967-10-01

Pagination or Media Count:

27.0

Abstract:

In terms of a mechanical-electrical analogy, a four-terminal electrical network is synthesized which has the characteristics of string of drill pipe subjected to longitudinal vibrations. Electrically, it is a Pi-section band-pass filter composed of passive, non-dissipative components which take their properties from the physical characteristics of the mechanical system, including the distance between discontinuities and the area ratios at the discontinuities. The attenuation characteristics of a typical drill string model are given as a function of frequency. The pass- and stop-bands for the system are discussed. Author

Subject Categories:

  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE