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Polymers 2016, 8(3), 63;

Experimentation and Modeling of the Tension Behavior of Polycarbonate at High Strain Rates

Engineering Simulation and Aerospace Computing (ESAC), Northwestern Polytechnical University, Xi’an 710072, China
Mechanics Unit (UME), ENSTA-ParisTech, Paris, 91761 Palaiseau, France
Authors to whom correspondence should be addressed.
Academic Editor: Xianqiao Wang
Received: 28 January 2016 / Revised: 23 February 2016 / Accepted: 24 February 2016 / Published: 29 February 2016
(This article belongs to the Special Issue Computational Modeling and Simulation in Polymer)
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A comprehensive understanding of the mechanical behavior of polycarbonate (PC) under high-rate loadings is essential for better design of PC products. In this work, the mechanical behavior of PC is studied during tensile loading at high strain rates, using a split Hopkinson tension bar (SHTB). A modified experimental technique based on the SHTB is proposed to perform the tension testing on PC at rates exceeding 1000 s−1. The effect of strain rates on the tension stress–strain law of PC is investigated over a wide range of strain rates (0.0005–4500 s−1). Based on the experiments, a physically based constitutive model is developed to describe the strain rate dependent tensile stress–strain law. The high rate tensile deformation mechanics of PC are further studied via finite element simulations using the LSDYNA code together with the developed constitutive model. View Full-Text
Keywords: polycarbonate; tension; high strain rate; constitutive model polycarbonate; tension; high strain rate; constitutive model

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Xu, Y.; Gao, T.; Wang, J.; Zhang, W. Experimentation and Modeling of the Tension Behavior of Polycarbonate at High Strain Rates. Polymers 2016, 8, 63.

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