Learning Forum

[shisha3301]

Dear all I have a problem in my model and the problem is , when I use a element size of (1000, 900, 800 ,700 ,600) mm the solution gives no error and is fine but if i put element size of (950mm or 500mm) the solution gives an error .

[peteroznewman]

Do you know how to create a Named Selection so you can find Node 2130 referred to in the Error message? That way, you can get near the source of the problem.

Use File, Archive to save a .wbpz file to attach to your reply if you want me to look at it more closely.

[shisha3301]

Thanks very much the file is attached as a zip with the project files and wb file in a folder, in the workbench model there are many standalone projects in the same page so the project is the last one at the bottom.

[peteroznewman]

The model has Bonded contact of 1 red edge to 61 blue edges. 
I don't know why, but that bond is causing a problem, while the same one on the other side does not.

The fix is to change the Formulation of that Bonded contact to MPC.

Then, after a Solution, you can click on the Solution Information folder and then click on the Graphics tab to see the CE elements on the display that shows which nodes were tied together by the Bonded contact as shown below by the little red lines. The mesh size shown is 500 mm.

Is that how you want that long beam tied to the diagonals?

If not, you will have to chop all the beams up into many small pieces so end points are connected.

If this answers your question, please mark it with Is Solution or ask a followup question.

[shisha3301]

Thanks very much the solution you suggested has helped me but further more reduction in element size gives an error, so I was wondering if you can suggest how I can chop the beams into small pieces as I tried doing that in design modeler but they ain't in same sketch.

[peteroznewman]

Open the Geometry in SpaceClaim, go to the Workbench tab and see if the Share button does a better job.

Otherwise, it will be a lot of work in DesignModeler making new sketches, or using the Split Edge function.

[shisha3301]

Thanks very much mr. Peter for your help as the share option helped me alot but I have a final question if that's fine with you, how can I insert a load at a specific point along beam .

[peteroznewman]

It is best to open the Geometry and split the beam at that specific point so there is a vertex to select in Mechanical.