کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
807186 | 905476 | 2012 | 12 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Saturated dislocations transient propagation–evolution in olivine structure under ultra high-coupled thermal-force fields Saturated dislocations transient propagation–evolution in olivine structure under ultra high-coupled thermal-force fields](/preview/png/807186.png)
Based on the first principle and flow driven pore-network crack theory, the crystal size saturated dislocations transient (10−4–10−5 s) propagation–evolution in olivine structure under ultra high-coupled temperature (200–500 °C) and pressure (0.4–1 GPa) are studied on the parallel CPU&GPU platform. First, the molecular-micro-scale transient fracture model is established by using hybrid hypersingular integral equation and Lattice Boltzmann method, the hydrogen ion and oxonium ion transport–dehydration (HI–OI–TD) in olivine [(FeMg)SiO4] crystal are explored. The bond-strength–length as function of thermal-force–time fields, the limited thermal-force value for HI–OI–TD through the crystal, and the ion state water adsorption in the crystal are calculated, respectively. Then, based on the above results, the crystal size saturated dislocations/defects propagation–evolution is studied. The relationship between the stress distribution and micro-strain under different velocity–time conditions, the saturated dislocations/defects propagation–evolution as function of coupled thermal-force–time fields are obtained. All these findings can helpful understand the mechanism of the dehydration fracturing shale gas, the coal-gas outbursts, and the coseismic triggering issues.
Journal: Theoretical and Applied Fracture Mechanics - Volume 58, Issue 1, April 2012, Pages 9–20