Hi,
A canopy is basically a thin shell subject to distributed loads (internal pressure and external aerodynamic pressure.
It should therefore be analyzed as a shell. The best tool for this is finite element analysis.
A good article on this subject is "Finite Element Modelling of a Fighter Aircraft Canopy Acrylic Panel" by John L. Labra in the Journal of Aircraft, Vol 19, Number 6 (1982).
Andries