Yield Criteria For Matrix And Composite Materials Under Static And Dynamic Loading

Isaac M Daniel, Joseph Schaefer, Brian T. Werner

Research output: Contribution to conferencePaper

Abstract

A quasi-brittle polymer material used as matrix in composites was characterized under various states of stress at various strain rates. It was shown that characteristic properties, such as the yield stress, vary linearly with the logarithm of strain rate. Furthermore, it was observed that the onset of yielding under any state of stress is governed by the tensile yield stress or yield strain. The onset of yielding in a composite lamina was also characterized under multi-axial states of stress and varying strain rates. It was shown that yielding can be described by criteria entirely analogous to the Northwestern failure criteria. Yield stresses varied linearly with the logarithm of strain rate. Thus, a master yield envelope was obtained for the lamina for varying strain rates and states of stress. Excellent agreement was shown with experimental results.
Original languageEnglish (US)
Pages2322-2323
Number of pages2
StatePublished - 2017
Event24th International Congress of Theoretical and Applied Mechanics (ICTAM 2016) - Montreal, Canada
Duration: Aug 22 2016 → …

Conference

Conference24th International Congress of Theoretical and Applied Mechanics (ICTAM 2016)
CountryCanada
CityMontreal
Period8/22/16 → …

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