PARADISCYL:Cylinder-Algorithm - Revision history

Iryu: /* List of Files */

2011-12-03T06:57:24Z

List of Files

← Older revision		Revision as of 06:57, 3 December 2011
Line 22:		Line 22:

	Function AllSegmentStress_no_cell() is modified to account for periodic images in Z direction.		Function AllSegmentStress_no_cell() is modified to account for periodic images in Z direction.
	A ~~local~~ ~~variable~~ ~~NimgPBC~~ is ~~hard~~ ~~coded.~~ For each dislocation segment, NimgPBC number ~~of its images~~		NimgPBC is specified in the input file(By default, it is '1'). For each dislocation segment, NimgPBC number
	are included in the stress calculation. ~~'''We should move this to Param.h.'''~~		of its images are included in the stress calculation.

	Macros (#ifdef 's) are added to make the Cylinder code use FULL_N2_FORCES when _CYL_TEST23 is defined.		Macros (#ifdef 's) are added to make the Cylinder code use FULL_N2_FORCES when _CYL_TEST23 is defined.

Iryu: /* List of Files */

2011-12-03T06:25:19Z

List of Files

← Older revision		Revision as of 06:25, 3 December 2011
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	(end) surface nodes.		(end) surface nodes.

	See [Cylinder-Remove_surface_debris].		See [[PARADISCYL:Cylinder-Remove_surface_debris \| M11 Remove surface debris ]].

	A new function ProjectSurfaceNodes() is defined to project nodes flagged by CYLINDER_SURFACE_NODE		A new function ProjectSurfaceNodes() is defined to project nodes flagged by CYLINDER_SURFACE_NODE
	back to the cylinder surface when it drifts inside the cylinder. Note that surface nodes moving		back to the cylinder surface when it drifts inside the cylinder. Note that surface nodes moving
	out of the cylinder are already handled by Cylinder_Remesh.		out of the cylinder are already handled by Cylinder_Remesh.

	See [Cylinder-Project_surface_node].		See [[PARADISCYL:Cylinder-Project_surface_node \| M12 Project surface nodes ]].

	3. MobilityLaw_BCC_glide.c		3. MobilityLaw_BCC_glide.c
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	force (if any). Image stress does not contribute to this force and the image stress is supposed to		force (if any). Image stress does not contribute to this force and the image stress is supposed to
	be turned off when running with these codes.		be turned off when running with these codes.
	See [Surface multiplication]		See [[PARADISCYL:Cylinder-Surface_cross_slip \| M10 Surface multiplication ]].

	A threshold stress is applied to all nodes to mimic the Peierls stress behavior in BCC metals.		A threshold stress is applied to all nodes to mimic the Peierls stress behavior in BCC metals.
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	the (old) constraint that the cylinder radius has to be one.		the (old) constraint that the cylinder radius has to be one.

	See [PARADISCYL:Scale-Rule].		See [[PARADISCYL:Scale-Rule \| M04 How units are scaled]].


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	7. SplitSurfaceNodes.c PredictiveCollision.c ProximityCollision.c		7. SplitSurfaceNodes.c PredictiveCollision.c ProximityCollision.c
	- For the surface node split (not implemented yet)		- For the surface node split (not implemented yet)


	==Cylinder Code Algorithm==		==Cylinder Code Algorithm==

Caiwei at 20:26, 2 December 2011

2011-12-02T20:26:50Z

← Older revision		Revision as of 20:26, 2 December 2011
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	3. MobilityLaw_BCC_glide.c		3. MobilityLaw_BCC_glide.c

	- Modify mobility for the surface node(keeping them on the surface/ slip plane)
			Modify the mobility of surface node /* version 3 */ so that they are kept simultaneously on the
	- Surface Cross Slip
			surface and its slip plane. This algorithm works in two steps. First, the velocity is made to
	- Surface node mobility correction
			satisfy all the slip plane glide constraints (copied from FCC_0 mobility law of bulk). Then the
	- etc
			surface normal is computed. The surface node velocity is adjusted by adding a component parallel to
			the surface dislocation segment, so that the velocity becomes orthogonal to the surface normal.

			The mobility (magnitude) of the surface node is made to be 2 (or 1, or 3, hard coded) times faster
			than the bulk. (Search for keyword: scale). This mobility enhancement is applied to a region near
			the cylinder surface (r > 0.8 R_cylinder) with a linear interpolation.

			Added codes to choose glide planes for surface nodes based on the force on the force. This force
			contains contributions from PK force (due to applied stress and other dislocations) and line tension
			force (if any). Image stress does not contribute to this force and the image stress is supposed to
			be turned off when running with these codes.
			See [Surface multiplication]

			A threshold stress is applied to all nodes to mimic the Peierls stress behavior in BCC metals.
			(Maybe the surface node has lower Peierls stress.)

			'''We need to clean up this file.'''

	4. Collision.c		4. Collision.c

Caiwei at 19:37, 2 December 2011

2011-12-02T19:37:46Z

@@ Line 15: / Line 15: @@
 . AllSegmentStress.c
  A new function AllSegmentStress_no_cell_test1() is added, which computes the stress field of a
@@ Line 25: / Line 26: @@
  Macros (#ifdef 's) are added to make the Cylinder code use FULL_N2_FORCES when _CYL_TEST23 is defined.
-. Collision.c
+. Cylinder_Remesh.c
  In function Cylinder_Remesh(), added new rules to remove surface debris (to increase time step).
  Surface debris are defined as dislocation line consisting of two or three segments with two
@@ Line 53: / Line 41: @@
 See [Cylinder-Project_surface_node].
 - Modify mobility for the surface node(keeping them on the surface/ slip plane)
 - Surface Cross Slip
 - Surface node mobility correction
 - etc
 ==Cylinder Code Algorithm==

Caiwei: /* List of Files */

2011-12-02T19:30:06Z

List of Files

@@ Line 27: / Line 27: @@
 . Collision.c
- - make flag to turn on/off the collision
+ Added lines to turn off collision if param->collisionoMethod is specified as a negative number
 . cylinder.c
 . Cylinder_Remesh.c
- - SURFACE_NODE -> CYLINDER_SURFACE_NODE
+ Make substitutions: SURFACE_NODE -> CYLINDER_SURFACE_NODE.
 . gridstress.c
 - remove R=1 constraint
@@ Line 48: / Line 67: @@
 - Surface node mobility correction
 - etc
 ==Cylinder Code Algorithm==

Caiwei at 19:16, 2 December 2011

2011-12-02T19:16:40Z

@@ Line 1: / Line 1: @@
 <P ALIGN="CENTER">
 <FONT SIZE="+3" color="darkred"><STRONG>
-Cylinder code algorithm </STRONG></font></P>
+Cylinder Code Algorithm </STRONG></font></P>
 <DIV>
 <P ALIGN="CENTER"><STRONG>ill Ryu and Wei Cai</STRONG></P>
 </DIV>

Caiwei: Created page with '
Cylinder code algorithm

ill Ryu and Wei Cai

…'

2011-12-02T18:59:03Z

Created page with ' Cylinder code algorithm <DIV> ill Ryu and Wei Cai </DIV> …'

New page

Cylinder code algorithm 
<DIV>
ill Ryu and Wei Cai
</DIV>

It describes how to remove tiny dislocation segment in cylinder code.

PARADISCYL:Cylinder-Algorithm - Revision history

Iryu: /* List of Files */

Iryu: /* List of Files */

Caiwei at 20:26, 2 December 2011

Caiwei at 19:37, 2 December 2011

Caiwei: /* List of Files */

Caiwei at 19:16, 2 December 2011

Caiwei: Created page with ' Cylinder code algorithm ill Ryu and Wei Cai …'

Caiwei: Created page with '
Cylinder code algorithm

ill Ryu and Wei Cai

…'