Title

Damped Response of Visco-Elastic Thick Cylinders of Infinite Extent

Report Number

WL-TR-91-3078 Volume III, p. HBB-1 thru HBB-10

Creator

Hamidzadeh, H.R.

Nunez, D.J.

Chandler, D.E.

Corporate Author

Department of Mechanical Engineering, South Dakota State University

Date

1991

Date Issued

1991-08

Extent

10

Identifier

ADA241313

Format

1 online resource

Abstract

Harmonic responses of viscoelastic thick circular cylinders of infinite extent, subjected to harmonic radial and tangential boundary stresses are considered. In development of an analytical solution two dimensional elastodynamic theory is employed and the viscoelastic material for the medium is allowed by assuming complex elastic moduli. The solution provides stresses and
displacements at any point in the medium in terms of boundary stresses. The resonant frequencies for different circumferential fle xural (lobar) modes and their corresponding thickness modes are computed and satisfactorily compared with an available solution. The present solution is not limited to thin shells, and it equally treats thick cylinders with any values of hysteretic damping . Also , several design charts for estimation of resonant frequencies for a wide range of thickness ratio are developed .

Description

Harmonic responses of viscoelastic thick circular cylinders of infinite extent, subjected to harmonic radial and tangential boundary stresses are considered. In development of an analytical solution two dimensional elastodynamic theory is employed and the viscoelastic material for the medium is allowed by assuming complex elastic moduli. The solution provides stresses and
displacements at any point in the medium in terms of boundary stresses. The resonant frequencies for different circumferential fle xural (lobar) modes and their corresponding thickness modes are computed and satisfactorily compared with an available solution. The present solution is not limited to thin shells, and it equally treats thick cylinders with any values of hysteretic damping . Also , several design charts for estimation of resonant frequencies for a wide range of thickness ratio are developed .

Distribution Classification

1

Distribution Conflict

No

DTIC Record Exists

No

Illinois Tech Related

No

Photo Quality

Not Needed

Report Availability

Full text available

Type

article

Is Part Of

Proceedings of Damping '91: 13-15 February 1991 San Diego, California (GCA-1 through JCB-17)