| 一种考虑聚醚醚酮（PEEK）不同力学状态的本构模型 |
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| 引用本文： | 张衡,严飙,尹红灵,徐永成,彭雄奇,彭福军.一种考虑聚醚醚酮（PEEK）不同力学状态的本构模型[J].应用数学和力学,2017,38(7):755-761. |
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| 作者姓名： | 张衡 严飙 尹红灵 徐永成 彭雄奇 彭福军 |
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| 作者单位： | 1上海宇航系统工程研究所 空间飞行器机构重点实验室, 上海 201108;2上海交通大学 材料科学与工程学院, 上海 200030 |
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| 基金项目： | 本文作者衷心感谢上海市空间飞行器机构重点实验室开放课题(SCCA5000003)对本文的资助.上海市优秀学术/技术带头人计划(14XD1423200) |
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| 摘 要： | 聚醚醚酮（简称PEEK）以其优良的性能而广泛应用于高端机械、 核工程和航空等科技领域.为了描述其在应变、应变率和温度3种因素作用下的力学行为，依据PEEK在不同温度下呈现的3种力学状态，在著名的JC(Johnson Cook)本构模型的基础上，提出了针对高分子不同力学状态的分段JC本构模型.与传统JC模型及文献中改进JC模型相比，提出的分段JC模型能够更精确地表征PEEK在中高温下的力学行为，为PEEK在复合材料中的应用和分析奠定了理论基础.
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| 关 键 词： | 聚醚醚酮 力学行为 本构模型 |
| 收稿时间： | 2016-09-14 |
A Constitutive Model for Polyether Ether Ketone (PEEK) in Various Mechanical States |
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| ZHANG Heng,YAN Biao,YIN Hong-ling,XU Yong-cheng,PENG Xiong-qi,PENG Fu-jun.A Constitutive Model for Polyether Ether Ketone (PEEK) in Various Mechanical States[J].Applied Mathematics and Mechanics,2017,38(7):755-761. |
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| Authors: | ZHANG Heng YAN Biao YIN Hong-ling XU Yong-cheng PENG Xiong-qi PENG Fu-jun |
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| Institution: | 1Shanghai Key Laboratory of Spacecraft Mechanism, Shanghai Aerospace Systems Engineering Institute, Shanghai 201108, P.R.China;2School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, P.R.China |
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| Abstract: | Polyether ether ketone (PEEK) with its excellent performances is widely used in advanced machinery,nuclear engineering,aviation,aerospace and other scientific & technological fields.In order to describe the mechanical behaviors of PEEK in view of coupled effects of strain,strain rate and temperature,based on the famous JC (Johnson-Cook) constitutive model,a piecewise JC constitutive model was established for PEEK in 3 mechanical states at different temperatures.Compared with the traditional JC model and a modified one in previous literatures,the proposed piecewise JC constitutive model can better predict the flow behaviors of PEEK at high temperatures.It provides a theoretical foundation for the numerical simulation and engineering application of PEEK in composites in the future. |
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| Keywords: | polyether ether ketone mechanical behavior constitutive model |
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