文档介绍：Review:
is the orientation relationship between maximum shear stresses and principal stresses?
are trajectories of principal stresses?
Stress Analysis for the Formation of En Echelon Veins and of Vortex Structures
Stress Analysis For The Formation Of En Echelon Veins
En echelon quartz veins
En echelon slaty cleavages are
perpendicular to the en echelon
quartz veins.
After , 1967
Observe the en echelon veins
and examine the relationship
among the en echelon
extensional veins, the slaty
cleavages and the straight
shearing veins
En echelon veins
Considering the equilibrium of an triangular plate element Set the coordinate systems as in the diagram, we have the equilibrium equations: F=0 and FT=0
Stress analysis
T
135
1
1
2
2
Formation of the
En echelon veins
(After Wang, ,
1984)
Sigmoid en echelon veins