Metal coin error study using 3D modelling and FEM Analysis
10.15660/AUOFMTE.2019-1.3394
C C Gavrila, M T Lates
cgavrila@unitbv.ro
Volume XXVIII, 2019/1
Mints around the world produced a large amount of metal coins currency. Besides the coin basic design, in most of the situations, various amount of coins wearing different error types are released. The error type is depending on the coin metal, dimension and also by manufacturing step where it could appear. This coins and medals with mint errors are searched by collectors around the world. The paper presents some aspects about the cracked dies error, which appear at the coin striking tools or coin properly strike, because of some dies misalignments, failures and the reduced relief dimension. In the first part of the paper, some aspects about the cracked dies error are presented, with some particular examples. Then, the simplified dies 3D model is presented. Also, the finite element analysis on this model is realized and is achieved for different initial conditions. In the paper final part the analysis results and conclusions are presented.
ISSN 1583-0691, CNCSIS "Clasa B+"