An Improved Gurney Model to Predict Initial Velocity of Parallel-moving Rod-shaped Fragment

• Main Authors: B Xue, Q Jing
• Format: Article
• Language: English
• Published: Multi-Science Publishing 2018-03-01
• Series: International Journal of Multiphysics
• Online Access: http://journal.multiphysics.org/index.php/IJM/article/view/383

An improved Gurney model considering explosive energy waste originated in the process of driving rod-shaped fragment revolving, is proposed herein to predict initial velocity of parallel-moving rod-shaped fragment using parameters such as Gurney constant, mass ratio of explosive charge to rod-shaped fragments, and slanting angle of rod-shaped fragments arrangement. Static arena test was performed to evaluate validity of said improved model, and predictions based on the improved Gurney model exhibit impressive consistency with test results, providing a reliable methodology to predict initial velocity of parallel-moving rod-shaped fragments in the engineering development of controllable discrete rod warhead.