Hi Manish,

thank you for the suggestions,
i have tried to supress the imported load and create a new force load onto the top face of  the workpiece with 500N and the solution worked. But i dont know how could the imported load be a problem, in the summary it states number of source & target& nodes mapped all  have the same number and the number of nodes not mapped : 0.

I tried also to change the material to structural steel and it worked also.

I tried to use contacts instead of shared topology and it didnt work.

I setup the initiap substep=200, min substep=25, max substep=10000; Large deflection = On;

Here is some data of the alu that i use: