The effect of bag tightness on the dynamics of a bag of grains on an oscillating container

Date

4-2014

Degree

Bachelor of Science in Applied Physics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Junius Andre F. Balista

Abstract

The behavior of a bag of grains on top of an oscillating container was observed and compared to the behavior of an inelastic ball. A bag of grains was placed inside a cylinder to limit the movement to one dimension only and was subjected to vibration from a stereo speaker. The intensity of vibration, in terms of dimensionless acceleration, <Γ>, range from 1 to 5. The graph of time-of-flight versus <Γ>, known as the bifurcation diagram, was plotted for various tightness of the bag. We observed that the bifurcation diagram generally shifted to the right as the tightness is decreased. In other words, the tighter is the bag, the longer is its time-of-flight. These results could be relevant to explanations of various granular materials phenomena that consider the analogy between granular materials and inelastic balls.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 2014 P51 /J87

Document Type

Thesis

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