Analysis Of The Mylonite Crystal Porous Mold Of Mixed Radius By The Finite Element Method

Mylonite is a kind of dynamometamorphic rock. Its particular formation mechanism makes itself a carrier of rich geology information. The study and research of mylonite is significant not only in theory but also in practice. Many geology scholars are being absorbed in observing and investigating it.This thesis theorizes the crystal mold of mixed radius of mylonite, according to the porous media mold which is put forward in literature [65]. The crystal mold of mixed radius of mylonite is calculated with the finite element method and is compared with the result of the crystal mold of identical radius of mylonite, which is also calculated with the finite element method. It is found that the smash of the porous media is completely possible on the condition of mylonite's formation. It is also found that the tectonic stress is the major factor on porous media's smash and the confining pressure is the minor factor.Based on the result, series geology phenomena are explained, such as plastic and brittle distortion, plastic flow structure, strip-shaped output and so on.In the meanwhile, the Mohr-Coulomb broken rules are modified and the Mohr-Coulomb broken rules are explicitly divided into two broken rules-split rules and crush rules. Furthermore the splited rock formation is explained with the split rules.Crystal diminished phenomenon is given a half quantitative analysis at the end of the thesis. The proportion of porphyroclast in mylonite micro-texture is also calculated.