Statistical damage constitutive model for rocks subjected to cyclic stress and cyclic temperature

• Autorzy: Zhou S. W. , Xia C.-C. , Zhao H. B. , Mei S. H. , Zhou Y.

Identyfikatory

DOI

10.1007/s11600-017-0073-2

• Języki publikacji: EN

Abstrakty

EN

A constitutive model of rocks subjected to cyclic stress–temperature was proposed. Based on statistical damage theory, the damage constitutive model with Weibull distribution was extended. Influence of model parameters on the stress–strain curve for rock reloading after stress–temperature cycling was then discussed. The proposed model was initially validated by rock tests for cyclic stress–temperature and only cyclic stress. Finally, the total damage evolution induced by stress–temperature cycling and reloading after cycling was explored and discussed. The proposed constitutive model is reasonable and applicable, describing well the stress–strain relationship during stress–temperature cycles and providing a good fit to the test results. Elastic modulus in the reference state and the damage induced by cycling affect the shape of reloading stress–strain curve. Total damage induced by cycling and reloading after cycling exhibits three stages: initial slow increase, mid-term accelerated increase, and final slow increase.

Słowa kluczowe

EN

cyclical stress; cyclic temperature; constitutive model; damage; Weibull distribution

PL

naprężenia cykliczne; temperatura cykliczna; model konstytutywny; uszkodzenie; rozkład Weibulla

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2017
• Tom: Vol. 65, no. 5
• Strony: 893--906
• Opis fizyczny: Bibliogr. 30 poz.

Twórcy

autor

Zhou S. W.

• Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai, People’s Republic of China
• Institute of Structural Mechanics, Bauhaus-University Weimar, Weimar, Germany

autor

Xia C.-C.

• Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai, People’s Republic of China
• College of Civil Engineering, Shaoxing University, Shaoxing, People’s Republic of China

autor

Zhao H. B.

• Hunan Key Laboratory of Key Technology on Hydropower Development, Power China Zhongnan Engineering Corporation Limited, Changsha, People’s Republic of China

autor

Mei S. H.

• Hunan Key Laboratory of Key Technology on Hydropower Development, Power China Zhongnan Engineering Corporation Limited, Changsha, People’s Republic of China

autor

Zhou Y.

• Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai, People’s Republic of China

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018)