An analytical approximation relating internal damping and strain amplitude

The degree of the approximation represented by the basic equation of motion of a vibratory system influenced by internal damping was improved by the assumption that the damping coefficient is proportional to the n^th power of the strain (or stress) amplitude. The solution of the improved equation. was presented by use of approximate methods. The results were expressed in terms of the logarithmic decrement and specific damping to facilitate comparison with experimental data. Three theoretical curves were fitted to experimental curves of the logarithmic decrement. It was found that the theoretical curves accurately described the damping (that is, they fit the experimental curves) for low values of the strain. The curves were found to diverge for higher values of the strain.

Name thesis:degree_name

M.S.

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Applied Mechanics

Department dc:contributor.department

Applied Mechanics

Grantor dc:publisher

Virginia Polytechnic Institute

Year dc:date.issued

1951

Author dc:creator

• Gay, Shelton Mann

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language.iso

en_US

Handle dc:identifier.uri

http://hdl.handle.net/10919/91131

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/91131