Dr. Sean Teller spoke about “High Strain Rate Testing and Material Modeling of an Anisotropic Glass Fiber Filled Polyetherimide” at the 15th LS-DYNA International Conference and Users Meeting, which took place June 11-12, 2018 in Dearborn, Michigan. High strength composite polymers are often used in applications that require high impact strength and durability. Accurately characterizing the mechanical behavior for FE simulation requires testing the materials at high strain rates and may require multiple loading modes.
Veryst has developed high-strain rate experimental facilities for testing all classes of polymers, and has also developed and implemented in LS-DYNA a nonlinear anisotropic elastic-viscoplastic user material, the Flow Evolution Network (FEN) model. Dr. Teller’s presentation addressed how Veryst tested 30% glass-fiber filled Polyetherimide (PEI) as well as calibration of the constitutive model to the experimental data with a nonlinear search algorithm in Veryst’s MCalibration® software. Learn more about the conference.