Napoleonic 12 pound canonbarrel FEA stress analysis

11/9/17 rev A

Don Blanchet

3B Associates

dwb3298@verizon.net

Prepared for:US-M39143-1043

Solidworks model

This Photo by Unknown Author is licensed under CC BY

Muzzle velocity 1500 ft/sec

Barrel model

Material cast iron

Meshed FEA model1,500,000 degrees of freedom

Loads and supports internal pressure in rifled barrel

Stress contours, psisection through centerline

Barrel deflection ~.020 inch

Observations

Barrel deflection needs to be compensated in sighting.

Ship roll during repeated broadside firing would be orders of magnitude greater.

World war I ships introduced gyroscopic gun mount stabilization.