A SIMPLE MODEL TO PREDICT CRITICAL RICOCHET ANGLE IN LONG-ROD PENETRATION

作者：Daneshjou K^*; Shahravi M

来源：Journal of Mechanics, 2009, 25(1): 117-128.

• Critical ricochet angle
• Long-rod
• Analytical model
• Numerical simulation

The ricochet of eroding long rods, from steel targets, is investigated by a series of three-dimensional numerical simulations in explicit finite element code. These are compared with the predictions of our analytical model and experimental results for ricochet. This approach is different than the rigid body treatment by A. Tate. Also it uses a new penetration velocity equation to predict critical ricochet angle. Critical ricochet angles were calculated for various impact velocities and strengths of the target plates in these approaches. It was predicted that critical ricochet angle increases with decreasing impact velocities and that higher ricochet angles were expected if higher strength target materials are employed. New model's results show a better agreement with numerical results and experiments, rather than Tate and Rosenberg models.

• 出版日期2009-3