Hello everyone,

I would like to realize an analysis of a beam's response under a 4 point bending test in order to get the curve : Force VS Deflection on a node. It would be a non linear curve I guess.

The beam is composed by 4 materials as shows the picture (2FaceSheets-1Core-2FaceSheets-16Composite)

Unfortunately when I solve the project after have applying my boundaries conditions (I've applied 2 nodal forces and fixed translations on edges of the beam), I get this result :

Maybe this is due to connections between each layers ( I've automatically created contacts area ).

Would it be more coherent to work with ACP system components instead of a static structure ? Using 2D orthotropic propertie for each materials is that correct to get a non linear solution ?

Thank you in advance for your help,

Project is joined,

J.