04-04-2011, 02:12 AM
Hello, there were a number of papers written regarding torsion artillery, tension e counterweight.
The one most usefull to us was "Mechanics of the Onager" V.J. Hart and M.J.T. Lewis (Journal of Engineering Mathematics - 1986) because of a simple stated assumption, that the Elastic Force of a Rope Bundle could be roughly used as that of a cilinder of the same material, meaning that friction and fiber displacement forces could be considered negligible.
What we found out in real field testing is that Torsion Artillery requires small adjustments since the fibers will keep streching (somewhat overriden by using a strong pretensioning apparatus).
We also found that simple "Tension Artillery" depends exclusivly on the fibers (or construction) of the tensioning element leading to a varied degree of fiability (all trees are by nature anisotropic).
So while the Torsion Artillery is harder to build, it also deals with the simple nature of a single variable present in Tension Artillery by introducing a bucket load of variables, that when put together in roughly the same way (Vitruvian Proportion for example) will make very similar weapons.
If you go on our website, we have a simple explanation for the involved equations in Torsion vs Counterweight (we feel that Tension in classical era could be, well a dice game).
The one most usefull to us was "Mechanics of the Onager" V.J. Hart and M.J.T. Lewis (Journal of Engineering Mathematics - 1986) because of a simple stated assumption, that the Elastic Force of a Rope Bundle could be roughly used as that of a cilinder of the same material, meaning that friction and fiber displacement forces could be considered negligible.
What we found out in real field testing is that Torsion Artillery requires small adjustments since the fibers will keep streching (somewhat overriden by using a strong pretensioning apparatus).
We also found that simple "Tension Artillery" depends exclusivly on the fibers (or construction) of the tensioning element leading to a varied degree of fiability (all trees are by nature anisotropic).
So while the Torsion Artillery is harder to build, it also deals with the simple nature of a single variable present in Tension Artillery by introducing a bucket load of variables, that when put together in roughly the same way (Vitruvian Proportion for example) will make very similar weapons.
If you go on our website, we have a simple explanation for the involved equations in Torsion vs Counterweight (we feel that Tension in classical era could be, well a dice game).
