Modeling Creep Fracture in Rock by Using Kelvin Discretized Virtual Internal Bond
Discretized virtual internal bond (DVIB) is a lattice model, which is composed of bond cells. Each bond cell has a finite number of bonds. The DVIB is used to model the creep fracture. It is done by introducing a viscous bond to the original hyperelastic DVIB. The hyperelastic bond is parallel coupl...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/8042965 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850225177280905216 |
|---|---|
| author | Wangyang He Zhennan Zhang |
| author_facet | Wangyang He Zhennan Zhang |
| author_sort | Wangyang He |
| collection | DOAJ |
| description | Discretized virtual internal bond (DVIB) is a lattice model, which is composed of bond cells. Each bond cell has a finite number of bonds. The DVIB is used to model the creep fracture. It is done by introducing a viscous bond to the original hyperelastic DVIB. The hyperelastic bond is parallel coupled with a viscous bond together, forming a hybrid hyperelastic-Kelvin bond. The hyperelastic bond reflects the microfracture mechanism, whereas the viscous bond reflects the creep mechanism. Based on this hyperelastic-Kelvin bond, the constitutive relation of a cell is derived. The microbond parameters are calibrated based on the ideal cell approach. The simulation results suggest that this method can represent the typical features of creep and can simulate the creep fracture. The merit of this method lies in that the complicated 3D macrocreep problem is reduced to the 1D microbond creep problem. No creep law is previously derived. The macrocreep fracture behavior is the natural response of the assembly of the micro hyperelastic-Kelvin bonds. |
| format | Article |
| id | doaj-art-5aea98a23fec475ba3a6ab8a4fd7b052 |
| institution | OA Journals |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-5aea98a23fec475ba3a6ab8a4fd7b0522025-08-20T02:05:27ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/80429658042965Modeling Creep Fracture in Rock by Using Kelvin Discretized Virtual Internal BondWangyang He0Zhennan Zhang1School of Naval Architecture, Ocean, and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaSchool of Naval Architecture, Ocean, and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaDiscretized virtual internal bond (DVIB) is a lattice model, which is composed of bond cells. Each bond cell has a finite number of bonds. The DVIB is used to model the creep fracture. It is done by introducing a viscous bond to the original hyperelastic DVIB. The hyperelastic bond is parallel coupled with a viscous bond together, forming a hybrid hyperelastic-Kelvin bond. The hyperelastic bond reflects the microfracture mechanism, whereas the viscous bond reflects the creep mechanism. Based on this hyperelastic-Kelvin bond, the constitutive relation of a cell is derived. The microbond parameters are calibrated based on the ideal cell approach. The simulation results suggest that this method can represent the typical features of creep and can simulate the creep fracture. The merit of this method lies in that the complicated 3D macrocreep problem is reduced to the 1D microbond creep problem. No creep law is previously derived. The macrocreep fracture behavior is the natural response of the assembly of the micro hyperelastic-Kelvin bonds.http://dx.doi.org/10.1155/2018/8042965 |
| spellingShingle | Wangyang He Zhennan Zhang Modeling Creep Fracture in Rock by Using Kelvin Discretized Virtual Internal Bond Advances in Civil Engineering |
| title | Modeling Creep Fracture in Rock by Using Kelvin Discretized Virtual Internal Bond |
| title_full | Modeling Creep Fracture in Rock by Using Kelvin Discretized Virtual Internal Bond |
| title_fullStr | Modeling Creep Fracture in Rock by Using Kelvin Discretized Virtual Internal Bond |
| title_full_unstemmed | Modeling Creep Fracture in Rock by Using Kelvin Discretized Virtual Internal Bond |
| title_short | Modeling Creep Fracture in Rock by Using Kelvin Discretized Virtual Internal Bond |
| title_sort | modeling creep fracture in rock by using kelvin discretized virtual internal bond |
| url | http://dx.doi.org/10.1155/2018/8042965 |
| work_keys_str_mv | AT wangyanghe modelingcreepfractureinrockbyusingkelvindiscretizedvirtualinternalbond AT zhennanzhang modelingcreepfractureinrockbyusingkelvindiscretizedvirtualinternalbond |