A visco-elastoplastic constitutive model for large deformation response of polycarbonate over a wide range of strain rates and temperatures
A visco-elastoplastic constitutive model for large deformation response of polycarbonate over a wide range of strain rates and temperatures
复制标题
聚碳酸酯在各种应变率和温度下大变形响应的粘弹塑性本构模型
DOI：
10.1016/j.polymer.2014.09.071
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发表时间：
2014-12
期刊：
影响因子：
4.6
通讯作者：
Gu Yabei
中科院分区：
文献类型：
--
作者：
Yu Peng;Yao Xiaohu;Han Qiang;Zang Shuguang;Gu Yabei
本文的主要目的是提出一种结合实验和分析的研究，以了解聚碳酸酯（PC）在宽范围的温度（−40 °C至100 °C）和应变速率（0.001至5000 s−1）下的力学行为。首先，进行了实验，以获得从低到高速率和温度的应力-应变响应。在此基础上，提出了一种稳健的物理一致的速率温度相关本构模型来表征PC的大变形力学行为。根据粘弹性理论，采用非线性粘弹性模型来理解弹性响应。屈服行为用合作模型描述。对于屈服后阶段，基于积分形式的软化与随动硬化模型，用软化与硬化的冲突与相互作用来描述。模型预测结果与实验结果吻合较好，验证了本构模型的正确性。
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.
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DOI：
10.1002/polb.1993.090310207
发表时间：
1993-02
期刊：
Journal of Polymer Science Part B
影响因子：
--
作者：
O. A. Hasan;M. Boyce;X. S. Li;S. Berko
通讯作者：
O. A. Hasan;M. Boyce;X. S. Li;S. Berko
影响因子：
3.3
作者：
T. Tervoort;L. Govaert
通讯作者：
T. Tervoort;L. Govaert
DOI：
10.1098/rspa.1968.0029
发表时间：
1968-01-01
影响因子：
--
作者：
HAWARD, RN;THACKRAY, G
通讯作者：
THACKRAY, G
DOI：
10.1016/j.ijsolstr.2007.05.018
发表时间：
2007-12-01
影响因子：
3.6
作者：
Richeton, J.;Ahzi, S.;Makradi, A.
通讯作者：
Makradi, A.
DOI：
10.1016/j.ijsolstr.2005.06.040
发表时间：
2006-04-01
影响因子：
3.6
作者：
Richeton, J;Ahzi, S;Adharapurapu, RR
通讯作者：
Adharapurapu, RR