Chen Fei, Ou Hengan, Lu Bin, Long Hui
Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham, Nottingham NG7 2 RD, UK.
Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham, Nottingham NG7 2 RD, UK.
J Mech Behav Biomed Mater. 2016 Jan;53:427-433. doi: 10.1016/j.jmbbm.2015.08.037. Epub 2015 Sep 9.
A modified Johnson-Cook (JC) model was proposed to describe the flow behaviour of polyether-ether-ketone (PEEK) with the consideration of coupled effects of strain, strain rate and temperature. As compared to traditional JC model, the modified one has better ability to predict the flow behaviour at elevated temperature conditions. In particular, the yield stress was found to be inversely proportional to temperature from the predictions of the proposed model.
提出了一种改进的约翰逊-库克（JC）模型，以考虑应变、应变率和温度的耦合效应来描述聚醚醚酮（PEEK）的流动行为。与传统的JC模型相比，改进后的模型在预测高温条件下的流动行为方面具有更好的能力。特别是，从所提出模型的预测结果来看，屈服应力与温度成反比。
