Several questions about the reproduction of Motionview official case MV-1029

I have gradually built the model according to the case of MV-1029, using PointToDeformableSurfaceContact for contact, but the ball and deformable surface seem to have no contact and have penetrated directly; Later on, I changed it to 3D contact and chose the contact between the ball and the deformable surface. However, the actual contact was between the ball and the CMS super unit, and the deformation shape was overall, which did not quite match the deformation animation in the official video. What are the reasons for this? How to solve it?

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Accepted answers

GTT Adam

Hi @Jin1,

If you run your model Offline and with the XML solver format, it solves as intended:

Hope this helps!

Adam Reid

GTT Adam

Hi @Jin1,

It looks like you are trying to enter an expression into a field that is marked as Linear. Please change the type to Expression to use runtime expressions.

Also, your expression looks to be surrounded by ' instead of `

Try this expression instead:

`{fmu_0.y_array.output_1}`

Hope this helps!

Adam Reid

All comments

GTT Adam

Hi @Jin1,

Can you share your model?

Also, what version of MotionView are you using?

Hope this helps!

Adam Reid

Jin1

ball.zip

This is my model, using the 2026 version

GTT Adam

Hi @Jin1,

If you run your model Offline and with the XML solver format, it solves as intended:

Hope this helps!

Adam Reid

Jin1

Thank you, with your help, I have solved it using offline solving. In addition, I have another question about MV-7012. When I use FMU for force output, it gives an error and cannot be solved. I have placed the model below. What is the reason for this?

Jin1

fmu.zip

This is my model

Jin1

Excuse me again, both of the above problems have been solved according to the methods you mentioned. Do you know how to find the NLSpring modeling interface in the 2025 version? I looked around and don't know where it went, but I can find it in 2022

GTT Adam

Hi @Jin1,

The NLFE Spring Tool was retired in 2024.0 and the last release to feature the tool was 2023.1.

A NLFE spring can still be created in part by using the NLFE Bodies from CSV tool, but the drop links will need to be created separately.

Hope this helps!

Adam Reid