Next Steps

Tony Baker and Andrew Pelcin

November 14, 1998
Modified September 30, 1999

This document has reported on all the FEA work I have done to this writing. I have replicated only one edge core geometry (EPA = 55 degrees) at one angle of blow (AOB = 70 degrees). I determined from this replication work that a ball spring constant of 4.9E5 was required to make the transition point occur at the correct theoretical platform thickness (TPT). I need to check other core geometries and AOBs because Pelcin showed that this transition point is also a function of these variables. If the spring constant of 4.9E5 doesn't produce the correct flake masses under these other conditions, then the work presented in this document is not correct. I also learned that a value of 9.0E-10 inch-lbs per millimeter was the stopping point for the creation of the energy-rich flakes. Will this value continue to be valid under these other conditions of EPA and TPT?

If these two values withstand this further testing, then I need to develop spring constants for different hammer materials, e. g. antler and bone. With this accomplished I will be able to start predicting with the FEA software. Ultimately, I want to model a Folsom preform and investigate which EPAs and AOBs would be most desirable for the successful removal of the channel flake. See Folsom Point Manufacture and the Folsom Workshop for more information of this subject.

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