Creep Lifetime Evaluation of Muddy Salt Rock

XU Hongfa; MA Yuqing; YANG Yaoran; Lü Yaru; GENG Hansheng

doi:10.21656/1000-0887.390230

Volume 40 Issue 5

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XU Hongfa, MA Yuqing, YANG Yaoran, Lü Yaru, GENG Hansheng. Creep Lifetime Evaluation of Muddy Salt Rock[J]. Applied Mathematics and Mechanics, 2019, 40(5): 527-535. doi: 10.21656/1000-0887.390230

Citation:

XU Hongfa, MA Yuqing, YANG Yaoran, Lü Yaru, GENG Hansheng. Creep Lifetime Evaluation of Muddy Salt Rock[J]. Applied Mathematics and Mechanics, 2019, 40(5): 527-535. doi: 10.21656/1000-0887.390230

Citation:

XU Hongfa, MA Yuqing, YANG Yaoran, Lü Yaru, GENG Hansheng. Creep Lifetime Evaluation of Muddy Salt Rock[J]. Applied Mathematics and Mechanics, 2019, 40(5): 527-535. doi: 10.21656/1000-0887.390230

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Creep Lifetime Evaluation of Muddy Salt Rock

doi: 10.21656/1000-0887.390230

State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing 210007, P.R.China

Received Date: 2018-08-31
Rev Recd Date: 2019-03-21
Publish Date: 2019-05-01

Abstract

Abstract

The creep life is an important problem in the research of rock rheology. For the lack of long-term creep experiment data, the creep rupture time is difficult to estimate. The complete stress-strain uniaxial compression experiment of the muddy salt rock was conducted, and the uniaxial creep test with the Chen method was done. The creep curve cluster under different stress levels was gained through processing of the creep curves, thereby the isochronal stress-strain curve cluster was obtained. Based on the fitting analysis, the variation law for the secant modulus of isochronal stress-strain curves with time and the mathematical model for isochronal stress-strain curves were established. The relationship between isochronal stress-strain curves and the complete stress-strain curve was considered to get the mathematical expressions of the creep failure strength and failure strain with the creep lifetime respectively. The research results can be used to estimate the creep lifetime, the long-term strength, the long-term elastic modulus, the creep failure line and the termination line of muddy salt rock, also make a reference for the estimation of the creep lifetime of similar rocks.
- muddy salt rock,
- creep lifetime,
- long-term strength,
- long-term modulus,
- creep failure line,
- creep termination line

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References(24)

References

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