Cantilever beam are basically simply beams assisted/supported on/at an end with the different end/point free. Also, in that arrangement the individual
Cantilever Beam Definition: What is a Cantilever Beams?
Cantilever Beams are members that are supported from a single point only; typically with a Fixed Support. In order to ensure the structure is static, the support must be fixed; meaning it is able to support forces and moments in all directions. A cantilever beam is usually modeled like so:
Cantilever Beam Deflection
Cantilevers deflect more than most other types of beams since they are only supported from one end. This means there is less support for the load to be transferred to. Cantilever Beams deflection can be calculated in a few different ways, including using simplified cantilever beam equations or cantilever beams calculators and software.
Cantilever Beams Stress
Cantilever Stress is calculated from the bending force and is dependent on the beam’s cross-section. For instance, if a member is quite small, there is not much cross-sectional area for the force to spread across, so the stress will be quite high. Cantilever beams stress can be calculated from either our tutorial on how to calculate beams stress – which will show the stresses of your beam.
Cantilever Beam Analysis
Design a suitable UB section in S355 steel. Assume the beam is fully laterally restrained. Assume self-weight of beam is included in the permanent action below.
Design Bending Moment and Shear Force
The cantilever beams is relatively short and will be subject to high moment and shear. A section needs to be chosen to resist these forces. This can be chosen through calculating the plastic modulus.
Looking at Tata Steel blue book, we can choose the Universal Beam with a greater plastic modulus. Hence, try UB 610 x 210 x 113.
Check Strength Classification
Resistance of Cross-Section Bending
Since the beam section belongs to class 1, the plastic moment of resistance can be calculated from the equation below: