Publica
Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. Numerical simulation of muzzle exit and separation process for sabotguided projectiles at M > 1
 Hiermaier, S.: Predictive modeling of dynamic processes : A tribute to Professor Klaus Thoma Berlin: Springer, 2009 ISBN: 9781441907264 ISBN: 9781441907271 S.261269 

 Englisch 
 Aufsatz in Buch 
 Fraunhofer EMI () 
Abstract
Coupled fluidstructure simulations of muzzle exit and separation process for sabotguided subcaliber projectiles in supersonic flight are presented. In order to guarantee a separation without significant perturbations for the projectile aspects of both aerodynamics and structure loading have to be considered. Such simulations require sophisticated methods for fluidstructure interaction. A particular challenge results from the significant relative motion of sabot, projectile and muzzle. A two stage strategy based on a switch from an earth–based to a moving coordinate system is proposed. By this means, an investigation of the complete physical process for the separation including interactions with the barrel and the high pressure gas is possible. The AUTODYN software extended by inhouse developed usersubroutines is applied for the simulations. Results for highstrength sabots of caliber 40 mm and different muzzle velocities are presented and compared with corresponding experimental data.