Search found 37 matches

by maike151
25 Nov 2019, 12:18
Forum: ElmerSolver
Topic: Error in `ElmerSolver': free(): invalid next size
Replies: 8
Views: 314

Re: Error in `ElmerSolver': free(): invalid next size

Hello Peter, thank you for your answer and effort. I am a little confused now, because the exact same case works using this mesh for example: https://www.dropbox.com/s/8inxaiv10bgkh20/mesh.zip?dl=0 This is the same geometry just with a coarser mesh. It actually delivers pretty good results close to ...
by maike151
21 Nov 2019, 12:46
Forum: ElmerSolver
Topic: Error in `ElmerSolver': free(): invalid next size
Replies: 8
Views: 314

Re: Error in `ElmerSolver': free(): invalid next size

After remeshing a thousand times it acutally ran through until Elasticity iteration 10 and almost made it through the first timestep. But then again crashed, this time with the error:

*** Error in `ElmerSolver': double free or corruption (!prev): 0x00000000034d9a00 ***
by maike151
21 Nov 2019, 12:21
Forum: ElmerSolver
Topic: Error in `ElmerSolver': free(): invalid next size
Replies: 8
Views: 314

Re: Error in `ElmerSolver': free(): invalid next size

It's also not always the same error. Sometimes I also get

*** Error in `ElmerSolver': corrupted size vs. prev_size: 0x0000000002893b10 ***

This is also pointer related.
by maike151
21 Nov 2019, 12:10
Forum: ElmerSolver
Topic: Error in `ElmerSolver': free(): invalid next size
Replies: 8
Views: 314

Re: Error in `ElmerSolver': free(): invalid next size

It has something to do with a pointer error. I think the Solver wants to free something it didn't allocate. This is not an error thrown by ElmerSolver, but by the system itself.
by maike151
21 Nov 2019, 12:08
Forum: ElmerSolver
Topic: Error in `ElmerSolver': free(): invalid next size
Replies: 8
Views: 314

Re: Error in `ElmerSolver': free(): invalid next size

I checked that via the "top" command in a terminal. I did not run out of RAM. I have a 80 GB machine with 20 GB Swap and the Swap wasn't even used. I already ran bigger simulations with more nodes.
by maike151
20 Nov 2019, 13:11
Forum: ElmerSolver
Topic: Error in `ElmerSolver': free(): invalid next size
Replies: 8
Views: 314

Error in `ElmerSolver': free(): invalid next size

Hello everyone, I keep on getting this Error: *** Error in `ElmerSolver': free(): invalid next size (fast): 0x0000000003ed8970 *** I remeshed my geometry with different parameters about twenty times now and it keeps on failing in the second elasticity iteration. I did the exact same simulation on th...
by maike151
31 Jul 2019, 13:52
Forum: ElmerSolver
Topic: Contact Mechanics - Friction Test
Replies: 63
Views: 4372

Re: Contact Mechanics - Friction Test

I did the very same thing with Friction Contact = Logical True instead of Slide Contact = Logical True and get the same results, so I guess it didn't work because of the Normalforce instead of Displacement 3 to simulate the Normal Force.
by maike151
31 Jul 2019, 11:20
Forum: ElmerSolver
Topic: Contact Mechanics - Friction Test
Replies: 63
Views: 4372

Re: Contact Mechanics - Friction Test

That does work well! Thank you! So I guess the friction contact just does not work yet.
by maike151
30 Jul 2019, 14:36
Forum: ElmerSolver
Topic: Contact Mechanics - Friction Test
Replies: 63
Views: 4372

Re: Contact Mechanics - Friction Test

SlipForce = SQRT( SUM( NodalForce**2 ) - NormalForce**2 ) I am a little confused about this now that I looked at it closer. In my understanding NodalForce is a matrix with *number of dimensions* rows and *number of elements* columns, because this is how it is saved in ElasticSolver: LoadVector(1,1:n...
by maike151
30 Jul 2019, 13:49
Forum: ElmerSolver
Topic: Contact Mechanics - Friction Test
Replies: 63
Views: 4372

Re: Contact Mechanics - Friction Test

Right, the Slipload is the Force that is applied to the cube in tangential direction. The formula is correct, and I also traced "NodalForce" back to the ElasticSolver and it is really the value that you can set as BC as either Force/Surface Traction 1,2,3 or Normal Force/Surface Traction. Somehow th...