The constitutive model and application research for rubber material based on Exp-ln model and general viscoelastic theory#br#

ZHONG Jian-lin, REN Jie, MA Da-wei

Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (19) : 150-156.

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PDF(1676 KB)
Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (19) : 150-156.

The constitutive model and application research for rubber material based on Exp-ln model and general viscoelastic theory#br#

  • ZHONG Jian-lin, REN Jie, MA Da-wei
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Abstract

A visco-hyperelastic constitutive model is proposed to describe the mechanical response of the rubber material under strain rate. Firstly, the uniaxial tensile test for the rubber material is conducted by the Instron testing machine and the SHTB testing machine. Secondly, combine with the Exp-ln hyperelastic constitutive model and generalized viscoelastic method, the visco-hyperelastic constitutive model is built. Thirdly, the three dimensional incremental format of the visco-hyperelastic constitutive model is deducted, the user subroutine (VUMAT) is written, the one dimensional and three dimensional effectiveness are verified. Finally, the impact additional load calculation model of the rubber base is obtained, the impact additional load test is compared and verified to the numerical simulation. The results show that: the numerical results match well with the uniaxial tensile test, the error of the impact additional load between the test and the simulation is approximately 7%, the correctness of the visco-hyperelastic constitutive model verified.

Key words

 rubber material / visco-hyperelastic constitutive model / tensile test / VUMAT;rubber base

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ZHONG Jian-lin, REN Jie, MA Da-wei. The constitutive model and application research for rubber material based on Exp-ln model and general viscoelastic theory#br#[J]. Journal of Vibration and Shock, 2015, 34(19): 150-156

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