A visco-elastoplastic constitutive model for large deformation response of polycarbonate over a wide range of strain rates and temperatures

Peng Yu, Xiaohu Yao*, Qiang Han, Shuguang Zang, Yabei Gu

*此作品的通讯作者

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73 引用 (Scopus)

摘要

The principal purpose in this paper is to present a combined experimental and analytical study to understand the mechanical behavior of polycarbonate (PC) under a wide range of temperatures (-40 °C to 100 °C) and strain rates (0.001 up to 5000 s-1). Firstly, the experiments were conducted to obtain stress-strain response from low to high rates and temperatures. Then a robust physically consistent rate and temperature-dependent constitutive model is proposed to characterize large deformation mechanical behavior of PC. According to viscoelastic theory, a nonlinear-viscoelastic model is employed to understand the elastic response. Yielding behavior is described via cooperative model. As respect to post-yield regime, it is described by the conflict and interaction between softening and hardening behavior based on the integral-form softening and kinematic hardening model. The proposed constitutive model is successfully validated by the excellent agreement between model prediction and experiment results.

源语言英语
页(从-至)6577-6593
页数17
期刊Polymer
55
25
DOI
出版状态已出版 - 1 12月 2014
已对外发布

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Yu, P., Yao, X., Han, Q., Zang, S., & Gu, Y. (2014). A visco-elastoplastic constitutive model for large deformation response of polycarbonate over a wide range of strain rates and temperatures. Polymer, 55(25), 6577-6593. https://doi.org/10.1016/j.polymer.2014.09.071