Curved Shear

curved
having or marked by a curve or smoothly rounded bend; "the curved tusks of a walrus"; "his curved lips suggested a smile but his eyes were hard"
In mathematics, a curve is, generally speaking, an object similar to a line (geometry) but which is not required to be straight. Often curves in two-dimensional (plane curves) or three-dimensional (space curves) Euclidean space are of interest.
Having the form of a curve; bent
(Curving) In education, grading on a curve (also known as curved grading or simply curving) is a statistical method of assigning grades designed to yield a pre-determined distribution of grades among the students in a class.

shear
A strain in the structure of a substance produced by pressure, when its layers are laterally shifted in relation to each other
(physics) a deformation of an object in which parallel planes remain parallel but are shifted in a direction parallel to themselves; "the shear changed the quadrilateral into a parallelogram"
fleece: shear the wool from; "shear sheep"
cut with shears; "shear hedges"