Accession Number:

AD0620404

Title:

FORCED VIBRATION OF UNEVENLY DISTRIBUTED MASSES.

Descriptive Note:

Master's thesis,

Corporate Author:

MONTANA STATE UNIV MISSOULA

Personal Author(s):

Report Date:

1965-08-01

Pagination or Media Count:

45.0

Abstract:

Forced vibration has been used extensively in the transportation or separation of various sized particles. The forcing frequency is usually created with a rotating or reciprocating unbalance that impresses a periodic, harmonic motion. This motion is directed to impart both a horizontal and a vertical movement to the particle. The development of the equations is shown, with their boundary conditions, that describe the motion of unattached particles on a vibrating platform. Results from these theoretical equations were tabulated in table form and compared with the test results. A high powered stroboscope was used with a photoelectric pickoff and a flash delay to photograph various stages in the cycle of rock particles on a vibrating platform. The position of the eccentric weights was used as a marker to determine the point in the vibrating platforms cycle that the photographs were taken. Various exciting frequencies and exciting forces were photographed for comparison with the theoretical results.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE