The elastoplastic constitutive model of rock and its numerical implementation based on unified strength theory

HU Xuelong; LI Keqing; QU Shijie

doi:10.11883/bzycj-2019-0044

Volume 39 Issue 8

Aug. 2019

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HU Xuelong, LI Keqing, QU Shijie. The elastoplastic constitutive model of rock and its numerical implementation based on unified strength theory[J]. Explosion And Shock Waves, 2019, 39(8): 083108. doi: 10.11883/bzycj-2019-0044

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HU Xuelong, LI Keqing, QU Shijie. The elastoplastic constitutive model of rock and its numerical implementation based on unified strength theory[J]. Explosion And Shock Waves, 2019, 39(8): 083108. doi: 10.11883/bzycj-2019-0044

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The elastoplastic constitutive model of rock and its numerical implementation based on unified strength theory

doi: 10.11883/bzycj-2019-0044

HU Xuelong^{1, 2
,},
LI Keqing^{1
,
,},
QU Shijie¹

1.
School of civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
2.
Department of Civil Engineering, Monash University, Merlbour 3800, Australia

Received Date: 2019-02-18
Rev Recd Date: 2019-05-10

Available Online: 2019-06-25

Publish Date: 2019-08-01

Abstract

Abstract

Based on the theory of elastoplastic mechanics, the rock elastoplastic constitutive model considering hardening/softening behavior and strain rate effect is established with the uniform strength criterion as the yield criterion. Fortran language was used to program the elastoplastic constitutive model through the user-defined material interface (Umat) of LS-DYNA. The elastoplastic constitutive model is verified by uniaxial compression test and SHPB test of rock, and the results show that the elastoplastic constitutive model can reflect the mechanical behavior of rock under quasi-static and dynamic conditions.
- unified strength theory,
- elastoplastic,
- constitutive model,
- strain rate effect

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References(21)

References

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