Search found 73 matches
- Fri Apr 07, 2017 5:24 am
- Forum: FEM
- Topic: Element Membrane M3D6
- Replies: 15
- Views: 5855
Re: ERROR : too many cutbacks
Hi, I suspect you face a problem of material instability (well known for elasto-plasticmaterials). - Please try first with an elastic material --> it should cpnvergence with the static solver - then for a elasto-plastic material (for example sigma=KEps^n). I do not exactly remember the formula but i...
- Mon Apr 03, 2017 7:34 pm
- Forum: FEM
- Topic: Cauchy ou Piola-Kirchoff stress?
- Replies: 2
- Views: 1526
Re: Cauchy ou Piola-Kirchoff stress?
Hi Groguigui, Guido is really the best guy to answer your questions. He is obviously very good in his field. Could you please describe your reference solution and how you want to simulate it with Calculix? There are many opportunities to make mistakes. Freecad just displays Calculix results. So Cauc...
- Tue Mar 21, 2017 6:58 am
- Forum: FEM
- Topic: Creating a group of nodes for a volume
- Replies: 8
- Views: 2555
Re: Creating a group of nodes for a volume
Thanks to both of you for your help.
- Mon Mar 20, 2017 7:42 pm
- Forum: FEM
- Topic: Creating a group of nodes for a volume
- Replies: 8
- Views: 2555
Re: Creating a group of nodes for a volume
Thanks for the information.
So there is no simple workaround since I need a node set and not an element set.
So there is no simple workaround since I need a node set and not an element set.
- Mon Mar 20, 2017 7:01 pm
- Forum: FEM
- Topic: Creating a group of nodes for a volume
- Replies: 8
- Views: 2555
Creating a group of nodes for a volume
Is there a simple way to define a Boundary conditions for a group of nodes related to a volume?
I tried different ways without success (Fem Mesh Group or Node Sets). In the end, I do not find the node set in the Input file.
Thanks,
Sodelo
I tried different ways without success (Fem Mesh Group or Node Sets). In the end, I do not find the node set in the Input file.
Thanks,
Sodelo
- Mon Mar 20, 2017 1:12 pm
- Forum: FEM
- Topic: Rigid body and Reference node
- Replies: 10
- Views: 4706
Re: Rigid body and Reference node
You want to simulate the testing of a specimen with a fixed displacement. You wan to know the reaction force. One option is to sum all the reaction forces on the nodes where the displacement is applied but this is not convenient. Another option is to create a rigid body at the extremity and to impos...
- Mon Mar 20, 2017 1:04 pm
- Forum: FEM
- Topic: Rigid body and Reference node
- Replies: 10
- Views: 4706
Re: Rigid body and Reference node
You want to simulate the impact of a car against a wall. Assume the wall is very rigid in comparison to the car. You can use the following model. crash.png In that case you define a rigid body between the wall nodes and the reference node. You give the car an initial velocity and the reference node ...
- Mon Mar 20, 2017 12:55 pm
- Forum: FEM
- Topic: Rigid body and Reference node
- Replies: 10
- Views: 4706
Re: Rigid body and Reference node
Imagine you want to simulate the mechanical testing of this specimen: cct1.jpg And the testing configuration is this one: images.jpg The specimen is loaded thanks to 2 axes. The distance between them is increased during the testing. To simulate this, you can describe the specimen, the 2 axes and use...
- Mon Mar 20, 2017 12:42 pm
- Forum: FEM
- Topic: Dynamic change of object properties
- Replies: 3
- Views: 1314
Re: Dynamic change of object properties
Maybe this approach is not the correct one and a dialog box would be preferable to handle the different options. I am having a look at Qt Designer and at the way the material property dialog is defined. I may have some questions ....
- Mon Mar 20, 2017 12:38 pm
- Forum: FEM
- Topic: Importing Equivalent Plastic Strain
- Replies: 56
- Views: 11141