A verification of the Cosserat rod implementation for drill-string dynamics under large displacement conditions

Abstract

A cantilever beam modelled as a Cosserat rod, subjected to an external eccentric load is studied as a means to verify the capability of the current implementation to handle large displacement conditions. It is shown that the present strategy based on the Cosserat theory succesfully overcomes the known limitations of other implementations, such as the Modified Cosserat Rod Element (MCRE).