Masters Theses


"This investigation involves the study of the reduction of vibratory forces in a sorting machine. The equivalent masselastic system is shown in Figure 1, in solid lines. In this figure the mass m₁ represents the main structure for the mounting of the machine, the mass m₂ is the main bearing blocks and the mass m₃ is the vibrating basket. The elastic stiffness indicated as k₁ represents the mounting spring for the entire unit, the stiffness k₂ is that of the beam structure by which the bearing block is attached to the main structure, and the stiffness k₃ is that of the connecting rod which drives the sorting basket.

Parts are sorted by the vibratory motion of the basket induced by rotation of the eccentric between mass number 3 and mass number 2.

The forces, stresses, and bearing loads resulting from the violent motion required to separate and feed parts are often very high causing numerous failures of important parts. In this study it is assumed that stresses in the member k₂ are sufficiently large to cause failure.

A system which is to be attached to the basket is illustrated by dotted lines in Figure 1 and adjusted by proper selection of mass, stiffness, and friction to reduce the stresses in the member k₂. However, because of the attachment of the absorber system to the basket the force in the connecting rod and bearings will also be greatly reduced.

An analog of the system will be used to select the parameters of the absorber to achieve an effective reduction in these forces"--Abstract, page ii.


Faucett, T. R.

Committee Member(s)

Nelson, John August
Jones, James A.
Schaefer, Rodney A., 1926-2002


Mechanical and Aerospace Engineering

Degree Name

M.S. in Mechanical Engineering


Pages 36 and 37 are in reverse order in the manuscript.


Missouri School of Mines and Metallurgy

Publication Date



ix, 37 pages

Note about bibliography

Includes bibliographical references (page 36).


© 1962 Navnit C. Mehta, All rights reserved.

Document Type

Thesis - Open Access

File Type




Subject Headings

Vibration -- Computer simulation
Vibration -- Mathematical models
Machinery -- Vibration
Analog computer simulation

Thesis Number

T 1407

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