Numerical evaluation of an autofrettaged thick-walled cylinder under dynamically applied axially non-uniform internal service pressure distribution
Defence Technology, vol.14, no.5, pp.412-416, 2018 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 14 Issue: 5
- Publication Date: 2018
- Doi Number: 10.1016/j.dt.2018.06.002
- Journal Name: Defence Technology
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.412-416
- Keywords: Gun tube design, Internal ballistics, Numerical modeling of internal ballistics, Residual stress, Service pressure, Thick wall cylinder, Wall thickness
- Ankara Yıldırım Beyazıt University Affiliated: Yes
Abstract
© 2018A dynamical moving pressure structural numerical calculation model using the internal ballistics calculation pressure-time results was constituted and the vicinity of the internal ballistics and quasi-internal ballistics structural model was checked. The Von Mises stresses obtained by the dynamical structural numerical model calculations and the Von Mises stresses calculated from the shot test strain measurements were compared. The difference for the worse case was 20% and for the best case was 0.1%. Furthermore, the model gave better agreement for the higher charge masses. The numerical structural quasi-internal ballistics computation model created was verified for the top charge mass which represents the highest stress condition and used in a gun barrel design.