Research of Shock Wave Damage Evaluation Method Based on LY-12 Effect Plate

This paper discusses the problems in electrometric method of measuring shock wave pressure, including frequency characteristic and installation method of the sensor, parasitic effect in damage conditions, as well as the unduplication of measuring environment and so on. These problems will lead to serious distortion. In this paper, on the structural characteristics of damage target, shock wave equivalent target method is proposed. The article discusses the use of methods and principles of equivalent target, uses the finite element software to do modal analysis with 1.5mm thickness aluminum plate and analyses the effects of shock wave to simulation results with different rise time, positive pressure time and specific impulse. Through sequentially loading gradient in 0.005Mpa~10MPa range to LY-12 aluminum plate in size of, target plate deformation damage can be observed. By using finite element numerical simulation, shock wave power of different equivalent explosion field can be reflected qualitatively.