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