Effect of Fragmenting Buried High Explosive Projectile (152mm HE Frag OF-540) on Military Ground Vehicles
Abstract
Simulation of Military ground vehicles subjected to buried landmines, and Improvised Explosive Devices (IED) has been carried out by many researchers, and military establishments to understand the effects in detail. But the ability to predict the effects of fragmenting IEDs on military ground vehicles is little known in simulation community. Hydrocode simulation such as Eulerian simulation and Arbitrary Lagrange in Eulerian (ALE) simulation coupled to vehicle structure is widely used methodology to characterize buried detonating IED. Fragmentation is the breakage of a body into several small pieces due to mechanical loadings. Dynamic fragmentation process between ductile materials and brittle materials goes through three phases: crack nucleation, crack propagation and fragmentation. Density and strength of materials dictates the phases of dynamic fragmentation. Fragments of different shape and size are formed when cracks coalesce. Understanding this process is crucial in estimating the number of fragments, size and its effect on impacting structures. There are several statistical and empirical formulations that are available to approximately estimate the number of fragments, but does not provide sufficient information about the velocities of the fragments. For military ground vehicles it is essential to know and understand not only the size of the fragments but also its velocities and secondary damages it can cause on the vehicle hull. In this proposed study, a 152mm High Explosive (HE) OF-540 fragmenting projectile was modelled in detail per geometry and buried 100 mm deep inside the soil. This fragmenting projectile was coupled to U.S. Armys Ground Vehicle System Center (GVSC) developed generic hull (GH) structure to understand the impact effects of fragmenting fragments.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 08, 2019
- Accession Number
- AD1077016
Entities
People
- Madanmohan Vunnam
- Sanjay Kankanalapalli
- Venkatesh Babu