youtor.org
Stiffener 23 Stiffener and Singularity
#############################
Video Source: www.youtube.com/watch?v=eHetKn2tMfY
The presence of a second phase in a matrix material leads to inhomogeneity in the mechanical fields. The theoretical solution of a zero-thickness, infinitely rigid line inclusion embedded in an elastic material has the following features: • Similarly to a fracture, a square-root singularity in the stress/strain fields is present at the tip of the inclusion; • In a homogeneous matrix subject to uniform stress at infinity, such singularity only arises when a normal stress acts parallel or orthogonal to the inclusion line, while a stiffener parallel to a simple shear does not disturb the ambient field. • • We have confirmed these characteristics through photoelastic transmission experiments. • • http://ssmg.ing.unitn.it
#############################
