A physically-based, quasilinear viscoelasticity model for the dynamic response of polyurea. (August 2016)

• Record Type: Journal Article
• Authors: Clifton, Rodney J.; Wang, Xinjie; Jiao, Tong
• Is Part Of: Journal of the mechanics and physics of solids. Volume 93(2016:Aug.)
• Page Start: 8
• Page End: 15
• Publication Date: 2016-08
• Subjects: Polyurea -- High pressure -- High strain rate -- Pressure-shear -- Quasilinear viscoelasticity; Mechanics, Applied -- Periodicals; Solids -- Periodicals; Mechanics -- Periodicals; Mécanique appliquée -- Périodiques; Solides -- Périodiques; Mechanics, Applied; Solids; Periodicals; 531.05
• DOI: 10.1016/j.jmps.2016.04.027
• Languages: English
• ISSNs: 0022-5096

Abstract

Abstract: Polyurea, a promising material for damage mitigation in impact scenarios, has been investigated through plane-wave, pressure-shear plate impact (PSPI) experiments to obtain its mechanical response at high pressures and high strain rates. Based on these experimental results, a physically-based, quasi-linear, viscoelasticity model is introduced to capture the observed nonlinear pressure-volume behavior, the strong dependence of shearing resistance on pressure, and the strong relaxation of deviatoric stresses. This model has been implemented in finite element software ABAQUS to simulate the response of polyurea P1000 under the impact conditions of a variety of PSPI experiments. Simulation results agree reasonably well with those of the experiments.