PARADISCYL:Cylinder-Remove surface debris

Remove surface debris

ill Ryu and Wei Cai

There is remaining issue realted to the time step due to the small dislocation segments.This tutorial describes how to remove tiny dislocation segment in cylinder code.

When two dislocations meet near the surface and form a junction, it would generate very tiny segments, which occur rapid drop in time step. To overcome this issue,

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Algorithm

1. Searching for the surface node(node in Figure 1.(a))

2. Find the neighbor node(nbr1 in Figure 1.(a))

3. Check if seglength is less than minSeg

4. Count number of independent slip plane of inside arms.

(a)	(b)	(c)
Fig.1 (a)Schematic diagram (b) Case I (c) Case II.