A Damage Constitutive Model of Red Sandstone under Coupling of Wet-Dry Cycles and Impact Load
In the engineering fields of mining, tunneling, slopes, and dams, rocks are usually subject to the coupling effect of impact load and wet-dry cycles. The deformation rule of rocks under the coupling effects is a symbolic mechanical property, which lays the foundation for the design and evaluation in...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-01-01
|
| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2019/7692424 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832546163420561408 |
|---|---|
| author | Bin Du Haibo Bai |
| author_facet | Bin Du Haibo Bai |
| author_sort | Bin Du |
| collection | DOAJ |
| description | In the engineering fields of mining, tunneling, slopes, and dams, rocks are usually subject to the coupling effect of impact load and wet-dry cycles. The deformation rule of rocks under the coupling effects is a symbolic mechanical property, which lays the foundation for the design and evaluation in the rock engineering. In this paper, the coupling damage was classified as mesodamage induced by wet-dry cycles and macrodamage induced by impact load, and the loading rate effect was considered as the load damage. Besides, a constitutive model of coupling damage was concluded based on Lemaitre’s strain equivalent assumption. Consequently, the validity of the model was verified by a series of dynamic compression tests of red sandstone. Results indicated that the proposed damage constitutive model can definitely describe the dynamic stress-strain curves of red sandstone after wet-dry cycles and impact load. The evolution of coupling damage curves showed that wet-dry cycle damage plays a dominant role in the elastic deformation stage, while the yield failure stage is controlled by the load damage in which the loading rate cannot be ignored. Parametric study was also performed to analyze the effect of parameters on dynamic stress-strain curves. The proposed mode has the simple and reliable operation with few parameters and can efficiently predict the long-term deformation behavior of rocks subject to multiple wet-dry cycles. |
| format | Article |
| id | doaj-art-d1ea2b01ad994782a05aa51a9419ce8f |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-d1ea2b01ad994782a05aa51a9419ce8f2025-02-03T07:23:49ZengWileyShock and Vibration1070-96221875-92032019-01-01201910.1155/2019/76924247692424A Damage Constitutive Model of Red Sandstone under Coupling of Wet-Dry Cycles and Impact LoadBin Du0Haibo Bai1State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, ChinaIn the engineering fields of mining, tunneling, slopes, and dams, rocks are usually subject to the coupling effect of impact load and wet-dry cycles. The deformation rule of rocks under the coupling effects is a symbolic mechanical property, which lays the foundation for the design and evaluation in the rock engineering. In this paper, the coupling damage was classified as mesodamage induced by wet-dry cycles and macrodamage induced by impact load, and the loading rate effect was considered as the load damage. Besides, a constitutive model of coupling damage was concluded based on Lemaitre’s strain equivalent assumption. Consequently, the validity of the model was verified by a series of dynamic compression tests of red sandstone. Results indicated that the proposed damage constitutive model can definitely describe the dynamic stress-strain curves of red sandstone after wet-dry cycles and impact load. The evolution of coupling damage curves showed that wet-dry cycle damage plays a dominant role in the elastic deformation stage, while the yield failure stage is controlled by the load damage in which the loading rate cannot be ignored. Parametric study was also performed to analyze the effect of parameters on dynamic stress-strain curves. The proposed mode has the simple and reliable operation with few parameters and can efficiently predict the long-term deformation behavior of rocks subject to multiple wet-dry cycles.http://dx.doi.org/10.1155/2019/7692424 |
| spellingShingle | Bin Du Haibo Bai A Damage Constitutive Model of Red Sandstone under Coupling of Wet-Dry Cycles and Impact Load Shock and Vibration |
| title | A Damage Constitutive Model of Red Sandstone under Coupling of Wet-Dry Cycles and Impact Load |
| title_full | A Damage Constitutive Model of Red Sandstone under Coupling of Wet-Dry Cycles and Impact Load |
| title_fullStr | A Damage Constitutive Model of Red Sandstone under Coupling of Wet-Dry Cycles and Impact Load |
| title_full_unstemmed | A Damage Constitutive Model of Red Sandstone under Coupling of Wet-Dry Cycles and Impact Load |
| title_short | A Damage Constitutive Model of Red Sandstone under Coupling of Wet-Dry Cycles and Impact Load |
| title_sort | damage constitutive model of red sandstone under coupling of wet dry cycles and impact load |
| url | http://dx.doi.org/10.1155/2019/7692424 |
| work_keys_str_mv | AT bindu adamageconstitutivemodelofredsandstoneundercouplingofwetdrycyclesandimpactload AT haibobai adamageconstitutivemodelofredsandstoneundercouplingofwetdrycyclesandimpactload AT bindu damageconstitutivemodelofredsandstoneundercouplingofwetdrycyclesandimpactload AT haibobai damageconstitutivemodelofredsandstoneundercouplingofwetdrycyclesandimpactload |