Finite element analysis of artillery self-tightening body tube stresses

The self-tightening technology of body tube is to apply a certain pressure in the inner bore so that corresponding residual stress generated tube, and can improve situation when it use extend its service life. Most existing research for large-caliber artillery are simplified thick-walled cylinder model, ignoring internal rifling chrome-plated processing factors, impact load on cracks stresses same did not take into account chrome layer. In order address above problems, this paper takes small-caliber as object, compares theoretical calculations with finite element simulation, carries out simulation ideal elastic-plastic steel tube.