Differences

This shows you the differences between two versions of the page.

--- tailorcrete:examples:dra_wall_01 [2012/11/16 08:53] – bp
+++ tailorcrete:examples:dra_wall_01 [2012/11/16 13:44] (current) – bp
@@ Line 15: / Line 15: @@
 | densty | 2300 [kg/m3]|
-Streamlines at different stages of solutions
+== Streamlines at different stages of solutions ==
 | {{:tailorcrete:examples:streamlines-casting-from-side-100.png?direct&200}} | {{:tailorcrete:examples:streamlines-casting-from-side-200.png?direct&200}} |
 | {{:tailorcrete:examples:streamlines-casting-from-side-300.png?direct&200|}} | {{:tailorcrete:examples:streamlines-casting-from-side-500.png?direct&200|}}|
+From the streamlines (curves that are instantaneously tangent to the velocity vector of the flow. These show the direction a fluid element will travel in at any point in time.) one can see, that there are certain regions in the structure, where the flow pattern is not developped (particularly the area above the openings on the right hand side). In these regions, some defects (such as air voids) can be expected.
-Principal directions of deviatoric strain
+== Principal directions of deviatoric strain ==
 |{{:tailorcrete:examples:principal-direction-casting-from-side-100.png?direct&200|}} | {{:tailorcrete:examples:principal-direction-casting-from-side-200.png?direct&200|}}|{{:tailorcrete:examples:principal-direction-casting-from-side-300.png?direct&200|}}|
+These figures indicate the principal directions of deviatoric strain. It could be expected, that fibers will orient perpendicular to the shearing direction, if sufficient ammount of flow will be achieved. The principal directions change during the time, as the flow pattern is not stationary. In general, the figures indicate, that fibers become aligned along the walls and along the openings, where the largest shear strains rates are achieved. On the other hand, in the region on the right side, with rather small strain magnitude, the orientation of fibers will not be altered, however, the fibers may have been already oriented, while passing through an area with high shear strains, particularly at the area close to the outlet and in the right hand side corner. However, due to no-friction boundary conditions, no significant shearing happens and therefore, the orientation of fibres will remain in most of the volume rather random.
-Magnitudes of deviatoric strain
+== Magnitudes of deviatoric strain ==
 |{{:tailorcrete:examples:eps-dev-casting-from-side-100.png?direct&200|}}|{{:tailorcrete:examples:eps-dev-casting-from-side-200.png?direct&200|}}|{{:tailorcrete:examples:eps-dev-casting-from-side-300.png?direct&200|}}
-Video of casting simulation
+== Video of casting simulation ==
 |{{video>http://www.oofem.org/wiki/lib/exe/fetch.php?media=tailorcrete:examples:drawall_side_bottom.avi|}}|