Abstract
In order to analyze the mechanical properties of projectile penetrating honeycomb aluminum, a dynamic nonlinear finite element model of projectile penetrating honeycomb aluminum was established and verified by experiments. It is found that the numerical simulation results of projectile penetration into honeycomb aluminum are consistent with the acceleration variation of the test. When the projectile penetrates into the honeycomb aluminum, the acceleration waveform is trapezoidal and the peak and pulse width of the acceleration are related to the velocity of the projectile and the wall thickness of the honeycomb aluminum material. With the increase of the velocity of the projectile, the peak value of the acceleration increases and the pulse width of the acceleration decreases. With the increase of the wall thickness of honeycomb aluminum, the peak value of acceleration increases, while the pulse width of acceleration decreases.
Highlights
Honeycomb aluminum is a good cushioning energy absorption material, which can absorb a lot of energy in the process of dynamic impact, so it is made into a variety of cushioning energy absorption components, which are widely used in military, transportation, packaging, construction and other fields
In this paper, the mechanical behavior of projectile penetrating into honeycomb aluminum with different wall thickness is studied by means of numerical simulation and experiment
This is because the strength of the experiment honeycomb aluminum is low, and the honeycomb aluminum is first broken and destroyed when it is impact by the projectile, and the overall structure is not subjected to sufficient force to deform it
Summary
Honeycomb aluminum is a good cushioning energy absorption material, which can absorb a lot of energy in the process of dynamic impact, so it is made into a variety of cushioning energy absorption components, which are widely used in military, transportation, packaging, construction and other fields. D. Ruan et al [3] studied the deformation mode and platform stress of honeycomb aluminum under in-plane dynamic compression by finite element analysis. Studied the in-plane collapse deformation mechanism of honeycomb aluminum under high speed impact by LS-DYNA, and gave the platform stress formula of honeycomb aluminum under dynamic load. Zou Z. et al [6] studied the platform stress and energy absorption of honeycomb aluminum under coplanar impact load by numerical simulation. M. Yamashita [9] analyzed the out-of-plane compression mechanical behavior of honeycomb aluminum by means of experiment and numerical simulation. In this paper, the mechanical behavior of projectile penetrating into honeycomb aluminum with different wall thickness is studied by means of numerical simulation and experiment.
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