Numerical modeling of adiabatic heat generation during rock fracture under dynamic loading

2019 ◽  
Vol 43 (9) ◽  
pp. 1770-1783 ◽  
Author(s):  
Timo Saksala
Keyword(s):  
Numerical Modeling ◽  
Dynamic Loading ◽  
Heat Generation ◽  
Rock Fracture

scholarly journals Numerical Modeling of Fluid Flow in Single Rock Fracture during Shear with Special Algorism for Contact Areas

2008 ◽  
Vol 124 (2) ◽  
pp. 129-136 ◽  
Author(s):  
Yujing JIANG ◽  
Tomofumi KOYAMA ◽  
Bo LI ◽  
Yusuke TASAKU ◽  
Ryousuke SAHO ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
Fluid Flow ◽  
Rock Fracture ◽  
Contact Areas ◽  
Single Rock Fracture

scholarly journals FDEM Modelling of Rock Fracture Process during Three-Point Bending Test under Quasistatic and Dynamic Loading Conditions

2021 ◽  
Vol 2021 ◽  
pp. 1-21
Author(s):  
Huaming An ◽  
Yushan Song ◽  
Hongyuan Liu
Keyword(s):  
Fracture Toughness ◽  
Dynamic Loading ◽  
Fracture Process ◽  
Loading Rate ◽  
Rock Fracture ◽  
Mesh Size ◽  
Bending Test ◽  
Loading Conditions ◽  
Three Point Bending ◽  
Dynamic Loading Conditions

A hybrid finite-discrete element method (FDEM) is proposed to model rock fracture initiation and propagation during a three-point bending test under quasistatic and dynamic loading conditions. Three fracture models have been implemented in the FDEM to model the transition from continuum to discontinuum through fracture and fragmentation. The loading rate effect on rock behaviour has been taken into account by the implementation of the relationship between the static and dynamic rock strengths derived from dynamic rock fracture experiments. The Brazilian tensile strength test has been modelled to calibrate the FDEM. The FDEM can well model the stress and fracture propagation and well show the stress distribution along the vertical diameter of the disc during the Brazilian tensile strength test. Then, FDEM is implemented to study the rock fracture process during three-point bending tests under quasistatic and dynamic loading conditions. The FDEM has well modelled the stress and fracture propagation and can obtain reasonable fracture toughness. After that, the effects of the loading rate on the rock strength and rock fracture toughness are discussed, and the mesh size and mesh orientation on the fracture patterns are also discussed. It is concluded that the FDEM can well model the rock fracture process by the implementation of the three fracture models. The FDEM can capture the loading rate effect on rock strength and rock fracture toughness. The FDEM is a valuable tool for studying the rock behaviour on the dynamic loading although the proposed method is sensitive to the mesh size and mesh orientation.

Heat generation by ultrasound wave propagation in porous media with low permeability: Theoretical framework and coupled numerical modeling

2020 ◽  
Vol 124 ◽  
pp. 103607
Author(s):  
Borzouyeh Khanghahi-Bala ◽  
Ghassem Habibagahi ◽  
Siavash Ghabezloo ◽  
Arsalan Ghahramani ◽  
Bernhard A. Schrefler
Keyword(s):  
Numerical Modeling ◽  
Porous Media ◽  
Wave Propagation ◽  
Heat Generation ◽  
Theoretical Framework ◽  
Low Permeability ◽  
Ultrasound Wave
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