           Plate:
h   [mm] : Thickness   
Ezp [Gpa] : Young's Modulus in Thickness Direction   
nyrzp [-] : Poisson's Ratio in Thickness Direction   
Erp [Gpa] : Young's Modulus in-plane   
nyrr [-] : Poisson's ratio in-plane   
Qf [GPa] : Young's Modulus in Flexure (12D/h^3)   
Grz [GPa] : Shear Modulus out-of-plane Shear   
Plate Density [kg/m3]   
GIIc : Delamination toughness in Mode II   
Ndmax : Maximum Delamination Number   

Impactor:
M   [kg] : Mass   
V0  [m/s] : Velocity   
R   [m] : Tip Radius   
Ei  [GPa] : Young's Modulus   
nyi [-] : Poisson's Ratio   




                    
                

Olsson R (2010). Analytical model for delamination growth during small mass impact on plates. Int J Solids Struct;47(21):2884-2892.
https://doi.org/10.1016/j.ijsolstr.2010.06.015