Computer Model to Determine Center of Gravity and Moments of Inertia for Protective Helmets.

摘要

The purpose of the study is to describe a computer model that will provide the parameters, center of gravity, moments of inertia and perceived protective area for combat helmets. The model is intended to be a design tool for use in the development of new helmets: it will also provide data on helmets already in use. The helmet is approximated by a series of flat triangular plates. The above parameters for each triangular increment are available in geometry text books. The perceived area is the actual area of the triangle times the dot product of a unit vector normal to the flat plate. A hollow hemisphere is used to test the accuracy of the model. Model accuracy is proved to be quite good.