Current studies don’t consider the influence of flyer’s thickness on the attenuation characteristics of shock wave’s peak pressure, for this problem, the simulation models that flyers of different thickness hit the oxygen free copper target board are established with the method of numerical simulation. Comparing the simulation values of pulse width in the interface of flyer and target plate with the theoretical values, the credibility of numerical models and simulation results can be verified. Processing the simulation data with least squares method, establishing the quantitative mathematical relationship between flyer’s thickness and the attenuation coefficient of the exponential decay models of shock wave’s peak pressure, it is shown that the influence of flyer’s thickness on the attenuation characteristics of shock wave’s peak pressure is obvious, and the relationship is approximately linear, the smaller the flyer’s thickness is, the larger the attenuation coefficient as well as the faster the attenuation rate of shock wave’s pressure peak will be, which provides a theoretical reference for the design and analysis of related experiments.
Key words
shock wave /
peak pressure /
numerical simulation /
flyer’s thickness /
attenuation characteristics
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