Numerical Analysis of the Influences of Geometrical Deviation on Delamination in Composite Laminates around the Countersunk Hole

Table 3

Failure criteria for unidirectional lamina [22].

Failure mode	Failure criterion
Fiber tensile failure ()
Fiber compressive failure ()
Fiber matrix shear-out ()
In-plane matrix cracking ()
In-plane matrix crushing ()
Out-of-plane matrix cracking ()
Out-of-plane matrix crushing ()