A cantilever beam is a structural element that is fixed at one end and free at the other end. It is commonly used in construction to support loads and transfer them to the fixed end.
An encastré beam, also known as a fixed beam, is a structural element that is fixed at both ends. This type of beam is able to resist bending and shear forces more effectively than a cantilever beam.
Bending moment is calculated for a cantilever beam by multiplying the load applied to the beam by the distance from the fixed end to the point where the bending moment is being calculated.
Shear force is the force that acts perpendicular to the longitudinal axis of a beam. It is caused by the external loads applied to the beam and is responsible for causing the beam to bend or deform.
The bending moment and shear force in a beam vary along its length depending on the type of load applied and the support conditions. In a cantilever beam, the bending moment and shear force are highest at the fixed end and decrease towards the free end. In an encastré beam, the bending moment and shear force are constant throughout the beam's length.