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Mehdi Naderi (mnader4)
Member
Username: mnader4

Post Number: 56
Registered: 12-2006
Posted on Monday, August 25, 2008 - 08:57 am:   

Dear Mr. Nelson,
The attached file is a crack propagation in the plate.
I defined a feature for crack line direction. I will appreciate if you help me.
Why the calculation will be very slow and results un-correct while crcak is very close to the front wall?
Why the feature line is coming out of the model?
Regards.
application/octet-streamcrack
Tension -crack-2D-2.pde (3.5 k)
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Marek Nelson (mgnelson)
Moderator
Username: mgnelson

Post Number: 70
Registered: 07-2007
Posted on Tuesday, August 26, 2008 - 01:46 pm:   

The calculation gets very slow once the cells are inverted. Your definition of the velocity is pushing the nodes beyond the outer domain.

It looks like your plate is not symmetric about the crack origin (the left half is narrower than the right half), but your velocities are symmetric. This causes the nodes on the left side of the plate to meet the domain boundary.

If you widen the left half of the plate to be the same as the right, or change the velocity for the left half, this should solve your problem.

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