AN EXPERIMENTAL STUDY OF NON-LINEAR VISCOELASTICITY.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1969
- Accession Number
- AD0694068
Entities
People
- Jon M. Jorgensen
Organizations
- Air Force Institute of Technology