Learning Forum

[AkashVyas]

Hello Everyone, I'm currently working on a non-Linear problem of the sliding seal, I already have a solved solid model of this but I'm trying to reduce the computation time, as it is an axisymmetric model.

I have given input displacement of 3.8mm as shown in this image 

as this solid model was successful and the reaction force at the seal where displacement is applied, is shown in the image, 

and I have also tried this problem axisymmetric model, with the same input and my reaction force value is 

so my question is why the forces in the solid and axisymmetric model are almost the same.

[peteroznewman]

It would be good if you used Excel and put the displacement and force for the solid model in columns A and B and the displacement and force for the axisymmetric model in columns C and D because you have 5 time steps in one and 1 time step in the other so it is hard to compare using the images you provided but would be easy if you overlaid the two curves on the same scale.

If you have the same physics and the same inputs, I would expect to get the same outputs from an axisymmetric model and a 3D model. Maybe I don't understand your question.

[AkashVyas]

I got you point but then why the reaction forces for 1/4 model is less then complete solid model.

[peteroznewman]

The reaction force of a 1/4 solid model should be 1/4 of the reaction force for a complete solid model if you are applying the same displacement.