Finite Element Analysis to Determine Effect of Notches in Bars

Notching may be a metal-cutting method utilized on sheet or thin bar stock, typically on angle sections or tube. A shearing or punching method is employed in a very press, therefore on cut vertically down and perpendicular to the surface, acting from the work piece edge. Typically the goal is just the notch itself, however typically this is often a precursor to another process: like bending a corner in sheet or connection 2 tubes at a tee joint, notching one to suit closely to the opposite. Nearly any possible metal will be notched. It's notably appropriate wherever the metal is otherwise awkward to drill, like Stainless steels, Titanium or antecedent heat-treated aluminium alloys. It's an operation of removing a little a part of metal sheet of desired form from metal sheet edge. In this thesis the effect of semi circular notches under bending in a bar on the stresses are investigated for different materials using finite element analysis. The notch radii taken are 2mm and 3mm. The notches are taken at end of bar and also at a distance of 3mm from end of the bar. The different materials considered for analysis are Aluminium alloy 6061, composite materials S Glass, Kevlar. Modelling is done in Creo 2.0 and structural, fatigue and modal analyses are done in Ansys.