Accession Number : AD0694068
Title : AN EXPERIMENTAL STUDY OF NON-LINEAR VISCOELASTICITY.
Descriptive Note : Master's thesis,
Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING
Personal Author(s) : Jorgensen,Jon M.
Report Date : JUN 1969
Pagination or Media Count : 143
Abstract : Styrene butadiene rubber was tested under constant strain-rate loading. The results were compared with stresses predicted by two non-linear viscoelastic constitutive equations - the Lianis Theory and the Bernstein-Kearsley-Zapas Theory. Both theories predicted stresses within 10% of experimental values; the Lianis Theory was generally closer to experimental values. The Lianis Theory was also compared to constant strain-rate loading superposed on a finite, equilibrium step of deformation and to constant strain-rate tests in which the strain rate is changed during the test. The results were comparable to the simple constant strain-rate test results. (Author)
Descriptors : (*MATERIALS, *VISCOELASTICITY), (*SYNTHETIC RUBBER, ELONGATION), (*STRESSES, MATHEMATICAL PREDICTION), NONLINEAR SYSTEMS, STYRENES, BUTADIENES, THEORY, DEFORMATION, RELAXATION TIME, STRAIN(MECHANICS), LOADS(FORCES), MECHANICAL PROPERTIES, COMPUTER PROGRAMS, EXPERIMENTAL DATA, EQUATIONS, THESES
Subject Categories : Elastomers and Rubber
Distribution Statement : APPROVED FOR PUBLIC RELEASE