One-dimensional yield behavior of MDYB-3 polymethyl methacrylate at different strain rates

Deng Xiao-qiu; Li Zhi-qiang; Zhou Zhi-wei; Wang Zhi-hua; Yao Xiao-hu

doi:10.11883/1001-1455-(2015)03-0312-08

Volume 35 Issue 3

Jun. 2015

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Deng Xiao-qiu, Li Zhi-qiang, Zhou Zhi-wei, Wang Zhi-hua, Yao Xiao-hu. One-dimensional yield behavior of MDYB-3 polymethyl methacrylate at different strain rates[J]. Explosion And Shock Waves, 2015, 35(3): 312-319. doi: 10.11883/1001-1455-(2015)03-0312-08

Citation:

Deng Xiao-qiu, Li Zhi-qiang, Zhou Zhi-wei, Wang Zhi-hua, Yao Xiao-hu. One-dimensional yield behavior of MDYB-3 polymethyl methacrylate at different strain rates[J]. Explosion And Shock Waves, 2015, 35(3): 312-319. doi: 10.11883/1001-1455-(2015)03-0312-08

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One-dimensional yield behavior of MDYB-3 polymethyl methacrylate at different strain rates

doi: 10.11883/1001-1455-(2015)03-0312-08

Deng Xiao-qiu^{1, 2},
Li Zhi-qiang^{1, 2
,
,},
Zhou Zhi-wei³,
Wang Zhi-hua^{1, 2},
Yao Xiao-hu⁴

1.
Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
2.
Shanxi Key Laboratory of Material Strength and Structure Impact, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
3.
State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China
4.
School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, Guangdong, China

Received Date: 2013-11-11
Rev Recd Date: 2014-03-04
Publish Date: 2015-05-25

Abstract

Abstract

Several groups of compression tests at different strain rates(10^-3~3 000 s^-1)are carried out for MDYB-3 polymethyl methacrylate.Yield stress in the quasi-static tests and peak stress in the dynamic tests are obtained.Compression tests are performed along normal direction and parallel directions of samples to analyze the effect of orientation stretching on yield stress.Ree-Eyring model and Cooperative model are revised to describe the yield behavior of directional PMMA.Viscoplastic behaviors after yield are attempted to be described using Johnson-Cook model.The results of Cooperative yield model are shown to be closer to the test results than those of Ree-Eyring yield model.Cooperative yield model can describe the yield stress of quasi-static tests accurately.Peak stress in dynamic compression test is failure stress, which means that samples fail before yield at the strain rate above 1 500 s^-1.The fitting results reveal that Johnson-Cook model can describe a single stress-strain curve well, but it cannot predict the dependence of strain rate.
- solid mechanics,
- quasi-static/dynamic compression,
- Johnson-Cook model,
- yield stress,
- MDYB-3 polymethyl methacrylate

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References(23)

References

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