In Abaqus, a stacking definition refers to the specification of the number, thickness, material properties, and orientation of layers (plies) in laminated composite structures. It is crucial for models involving composite materials or layered systems, such as base isolators composed of multiple layers (e.g., laminated rubber bearings with steel plates). The stacking definition allows accurate simulation of the interaction between layers. If the base isolation system or other parts of the model involve such layered materials, a stacking definition is necessary.

Thanks Ahmed for your answer

Can you please recommend me a reference or video as a common example of steps to follow up??

Am i need to define stacking plus instead of MPC constraint or one of them is enough????