Accession Number : AD0627642

Title :   COMPARISON OF COMPLEX MODULI OBTAINED FROM FORCED AND FREE DAMPED OSCILLATIONS.

Descriptive Note : Technical rept.,

Corporate Author : COLUMBIA UNIV NEW YORK DEPT OF CIVIL ENGINEERING AND ENGINEERING MECHANICS

Personal Author(s) : Heller,R. A. ; Nederveen,C. J.

Report Date : NOV 1965

Pagination or Media Count : 21

Abstract : An analysis of a generalized Maxwell model, representing a viscoelastic solid under conditions of forced and free oscillations shows that the complex modulus computed from the two types of motion are not identical but the approximation provided by a free vibration experiment is reliable when tan delta is less than 0.6. The free vibration experiment over estimates damping and under estimates the modulus. (Author)

Descriptors :   (*OSCILLATION, DAMPING), VIBRATION, STRESSES, EQUATIONS, CREEP, DEFORMATION, MATHEMATICAL MODELS

Subject Categories : Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE