Research on damage viscoelastic dynamic constitutive model of granite
Dynamic mechanical properties of granite were tested by a split Hopkinson pressure bar system with constant strain rate.The initial loading stage of stress-strain curve of granite is linear elasticity, and the rock material has a significant plastic deformation after yielding.Yield strength, peak st...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Emergency Management Press
2019-10-01
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| Series: | 矿业科学学报 |
| Subjects: | |
| Online Access: | http://kykxxb.cumtb.edu.cn/article/id/239 |
| _version_ | 1811179494034112512 |
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| author | Ling Tianlong Liu Dianshu Liang Shufeng Li Shenglin |
| author_facet | Ling Tianlong Liu Dianshu Liang Shufeng Li Shenglin |
| author_sort | Ling Tianlong |
| collection | DOAJ |
| description | Dynamic mechanical properties of granite were tested by a split Hopkinson pressure bar system with constant strain rate.The initial loading stage of stress-strain curve of granite is linear elasticity, and the rock material has a significant plastic deformation after yielding.Yield strength, peak strength and elastic modulus are all rate dependent.Based on dynamic mechanical property of granite, the constitutive of Zhu-Wang-Tang model was simplified to apply on granite, and with consideration of the effect of damage on the dynamic strength of granite under impact load.The experimental data were fitted to the proposed model.The fitted stress-strain curves at different strain rates are in good agreement with the experimental ones.This demonstrates that the proposed dynamic constitutive model in this paper can accurately describe the dynamic mechanical properties of granite under the impact load. |
| first_indexed | 2024-04-11T06:35:16Z |
| format | Article |
| id | doaj.art-bf606fd9665b49ae92fad9168fbc1e9c |
| institution | Directory Open Access Journal |
| issn | 2096-2193 |
| language | English |
| last_indexed | 2024-04-11T06:35:16Z |
| publishDate | 2019-10-01 |
| publisher | Emergency Management Press |
| record_format | Article |
| series | 矿业科学学报 |
| spelling | doaj.art-bf606fd9665b49ae92fad9168fbc1e9c2022-12-22T04:39:50ZengEmergency Management Press矿业科学学报2096-21932019-10-014540340910.19606/j.cnki.jmst.2019.05.00420190504Research on damage viscoelastic dynamic constitutive model of graniteLing Tianlong0Liu Dianshu1Liang Shufeng2Li Shenglin3School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, ChinaDynamic mechanical properties of granite were tested by a split Hopkinson pressure bar system with constant strain rate.The initial loading stage of stress-strain curve of granite is linear elasticity, and the rock material has a significant plastic deformation after yielding.Yield strength, peak strength and elastic modulus are all rate dependent.Based on dynamic mechanical property of granite, the constitutive of Zhu-Wang-Tang model was simplified to apply on granite, and with consideration of the effect of damage on the dynamic strength of granite under impact load.The experimental data were fitted to the proposed model.The fitted stress-strain curves at different strain rates are in good agreement with the experimental ones.This demonstrates that the proposed dynamic constitutive model in this paper can accurately describe the dynamic mechanical properties of granite under the impact load.http://kykxxb.cumtb.edu.cn/article/id/239graniteshpbdynamic mechanical propertiesconstitutive model |
| spellingShingle | Ling Tianlong Liu Dianshu Liang Shufeng Li Shenglin Research on damage viscoelastic dynamic constitutive model of granite 矿业科学学报 granite shpb dynamic mechanical properties constitutive model |
| title | Research on damage viscoelastic dynamic constitutive model of granite |
| title_full | Research on damage viscoelastic dynamic constitutive model of granite |
| title_fullStr | Research on damage viscoelastic dynamic constitutive model of granite |
| title_full_unstemmed | Research on damage viscoelastic dynamic constitutive model of granite |
| title_short | Research on damage viscoelastic dynamic constitutive model of granite |
| title_sort | research on damage viscoelastic dynamic constitutive model of granite |
| topic | granite shpb dynamic mechanical properties constitutive model |
| url | http://kykxxb.cumtb.edu.cn/article/id/239 |
| work_keys_str_mv | AT lingtianlong researchondamageviscoelasticdynamicconstitutivemodelofgranite AT liudianshu researchondamageviscoelasticdynamicconstitutivemodelofgranite AT liangshufeng researchondamageviscoelasticdynamicconstitutivemodelofgranite AT lishenglin researchondamageviscoelasticdynamicconstitutivemodelofgranite |