Authors: Francisco Perez
Addresses: Department of Mechanical Engineering, University of New Mexico, Albuquerque, NM 87131, USA. ' Department of Mechanical Engineering, University of New Mexico, Albuquerque, NM 87131, USA
Abstract: A one-dimensional impact problem is employed for a layered system that comprises heterogeneous materials with different geometrical configurations. The system mimics transmitter for Multiple Integrated Laser Engagement Systems (MILES). The analytical model tracks the stress wave propagation through this layered structure as a result of the mechanical shock from blank rounds as they fired. The results clearly support the hypothesis that layered systems will suffer stress amplification with inherent acoustic impedance mismatch between layers. It is evident that the time dependent stress response in the rise portion is significantly affected by impedance mismatch and the number of layers.
Keywords: stress waves; wave propagation; layered composites; acoustic impedance; impact; mechanical shock; blank rounds.
International Journal of Theoretical and Applied Multiscale Mechanics, 2009 Vol.1 No.2, pp.164 - 175
Published online: 10 Nov 2009 *Full-text access for editors Access for subscribers Purchase this article Comment on this article