Benoit Heraud

Hello Ahmed,

In workbench, make sure you are starting your workflow from a Speos block.
So geometry imported in mechanical should come from a first Speos block.

Then, inside this first Speos block, make also sure geometry to deform is defined into a named selection. 

We also recommend to set up the optical simulation model directly into the first Speos block and assign to Simulation and Optical Property the geometry named selection (instead of the geometry itself directly). 

Then you can link this block to Stactic Structural block, perform your mechanical simulation, create a new Speos block after and link Static Structural's Solution to Speos's Geometry.

have a good day,