Why should there be such singularities only on the bottom? In theory (uniform solution) the bottom corners aren't any different from the other 2 vertices. The fixed bottom is just the FEA boundary condition to prevent rigid body motions.Arjan82 said:
Stress/strain concentration in shear loadings refers to the phenomenon where stress and strain are amplified at a specific point or region in a material due to an applied shear load. This can occur when there is a sudden change in geometry or material properties, causing a concentration of stress and strain at that point.
Stress/strain concentration in shear loadings can be caused by a variety of factors, including changes in material thickness, sharp corners or notches, and changes in material properties such as stiffness or hardness. These changes can create stress risers, which are areas of high stress concentration.
Stress/strain concentration can significantly reduce the strength of a material. The amplified stress and strain at the concentrated point can lead to material failure, even if the rest of the material is strong enough to withstand the applied load.
Stress/strain concentration can be minimized by using design techniques such as fillets, gradual transitions, and reducing sharp corners or notches. These measures help to distribute the stress and strain more evenly throughout the material, reducing the concentration at specific points.
Stress/strain concentration can have significant implications in engineering applications. It can lead to unexpected and premature failure of materials, which can have safety and economic consequences. Therefore, it is essential for engineers to consider stress/strain concentration in their designs and take appropriate measures to minimize its effects.