| MDYB-3有机玻璃在不同应变率下不同黏弹性模型的比较 |
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| 引用本文： | 邓小秋,李志强,周志伟,王志华,姚小虎.MDYB-3有机玻璃在不同应变率下不同黏弹性模型的比较[J].北京理工大学学报,2014,34(S1):133-138. |
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| 作者姓名： | 邓小秋 李志强 周志伟 王志华 姚小虎 |
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| 作者单位： | 太原理工大学 应用力学与生物医学工程研究所, 山西, 太原 030024;材料强度与结构 冲击山西省重点实验室, 山西, 太原 030024;太原理工大学 应用力学与生物医学工程研究所, 山西, 太原 030024;材料强度与结构 冲击山西省重点实验室, 山西, 太原 030024;中国科学院寒区 旱区环境与工程研究所 冻土工程国家重点实验室, 甘肃, 兰州 730000;太原理工大学 应用力学与生物医学工程研究所, 山西, 太原 030024;材料强度与结构 冲击山西省重点实验室, 山西, 太原 030024;华南理工大学 土木与交通学院, 广东, 广州 510640 |
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| 基金项目： | 国家国际科技合作专项资助项目(2011DFA53080);国家自然科学基金资助项目(11072166);山西省高等学校优秀青年学术带头人资助项目(2011) |
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| 摘 要： | 对MDYB-3有机玻璃进行了准静态(0.001~1 s-1)和动态(1 000~3 000 s-1)压缩实验,以ZWT模型、多Maxwell模型及修正多Maxwell三种黏弹性本构模型拟合了所得应力-应变曲线. 结果表明ZWT模型对于低应变率拟合较好,多Maxwell模型无法准确描述应力-应变曲线的非线性,在三者拟合中,修正多Maxwell模型拟合效果最好. 在实际应用中,ZWT模型更灵活简便,而修正多Maxwell模型更准确.
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| 关 键 词： | MDYB-3有机玻璃 准静态压缩 动态压缩 黏弹性本构模型 |
| 收稿时间： | 2013/12/18 0:00:00 |
Comparison of Different Viscoelastic Models for MDYB-3 Polymethyl Methacrylate Compression at Different Strain Rates |
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| DENG Xiao-qiu,LI Zhi-qiang,ZHOU Zhi-wei,WANG Zhi-hua and YAO Xiao-hu.Comparison of Different Viscoelastic Models for MDYB-3 Polymethyl Methacrylate Compression at Different Strain Rates[J].Journal of Beijing Institute of Technology(Natural Science Edition),2014,34(S1):133-138. |
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| Authors: | DENG Xiao-qiu LI Zhi-qiang ZHOU Zhi-wei WANG Zhi-hua and YAO Xiao-hu |
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| Institution: | Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China;Shanxi Key Laboratory of Material Strength and Structural Impact, Taiyuan, Shanxi 030024, China;Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China;Shanxi Key Laboratory of Material Strength and Structural Impact, Taiyuan, Shanxi 030024, China;State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China;Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China;Shanxi Key Laboratory of Material Strength and Structural Impact, Taiyuan, Shanxi 030024, China;School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong 510640, China |
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| Abstract: | Quasi-static compression tests (0.001~1 s-1) and dynamic compression tests (1 000~3 000 s-1) on MDYB-3 polymethyl methacrylate were carried out. Three viscoelastic models: ZWT model, n-Maxwell model, and revised n-Maxwell model, were used to fit its final stress-strain curves, and comparisons of these fitted results were conducted. The results showed that ZWT model is good at low strain rates; n-Maxwell model can not accurately describe the non-linearity; and the revised n-Maxwell model has the best fitting effect among these three models. In practical applications, the ZWT model is the most flexible and simplest, while the revised n-Maxwell model is the most accurate. |
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| Keywords: | MDYB-3 polymethyl methacrylate quasi-static compression dynamic compression viscoelastic models |
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