Constitutive model of transparent aviation polyurethane at high strain rates

Zhang Long-hui; Zhang Xiao-qing; Yao Xiao-hu; Zang Shu-guang

doi:10.11883/1001-1455(2015)01-0051-06

Volume 35 Issue 1

Feb. 2015

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Zhang Long-hui, Zhang Xiao-qing, Yao Xiao-hu, Zang Shu-guang. Constitutive model of transparent aviation polyurethane at high strain rates[J]. Explosion And Shock Waves, 2015, 35(1): 51-56. doi: 10.11883/1001-1455(2015)01-0051-06

Citation:

Zhang Long-hui, Zhang Xiao-qing, Yao Xiao-hu, Zang Shu-guang. Constitutive model of transparent aviation polyurethane at high strain rates[J]. Explosion And Shock Waves, 2015, 35(1): 51-56. doi: 10.11883/1001-1455(2015)01-0051-06

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Constitutive model of transparent aviation polyurethane at high strain rates

doi: 10.11883/1001-1455(2015)01-0051-06

1.
School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, Guangdong, China
2.
China Building Material Test and Certification Center, Beijing 100024, China

Received Date: 2013-05-23
Rev Recd Date: 2013-10-17
Publish Date: 2015-01-25

Abstract

Abstract

The uniaxial compressive properties of aviation polyurethane were investigated experimentally by using a modified aluminum split Hopkinson pressure bar apparatus. The obtained stress-strain curves presented distinct non-linear viscoelastic characteristic.Based on the constitutive theory and the experimental data, a hyper-viscoelastic constitutive model that incorporated a strain-dependent relaxation time was proposed to describe the large compressive deformation response of incompressible aviation polyurethane at high strain rates. The proposed model was made up of two parallel mechanical elements-one component to characterize quasi-static hyperelastic behavior, and the other to define rate-sensitivity and strain history dependence. The predictions of the mechanical behavior using a hyper-viscoelastic constitutive model based on strain energy functions and hereditary approach had a good agreement with experimental results.
- solid mechanics,
- constitutive model,
- SHPB,
- aviation polyurethane,
- high strain rate,
- hyper-viscoelastic

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References(13)

References

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