EFFECT OF IMPACT ANGLE ON THE LOW-VELOCITY IMPACT PERFORMANCEOF ALUMINUM HONEYCOMB SANDWICH PLATE

Abstract

Abstract: In order to study the effect of impact angle on the low-velocity impact performance of aluminum honeycomb sandwich plate, a finite element model of aluminum honeycomb sandwich plate subjected to low-velocity impact was established in ABAQUS with reference to the literature experiment process. The simulation results were compared with the literature experiment results to verify the reliability of the model. The effects of impact angle on damage and energy absorption of sandwich plate, maximum contact force and contact time between impactor and top face-sheet, the tangential slip-stick state between impactor and top face-sheet were investigated. The results show that with the increase of impact angle, the maximum damage depth of the aluminum honeycomb sandwich plate decreases, the deformation of the top face-sheet decreases, and the buckling of the honeycomb core element along the sliding direction of the impactor increases. But its damage decreases, and the bottom face-sheet almost not deforms. Besides, the maximum contact force decreases, the contact time between impactor and top face-sheet increases. Also, the absorbed energy by total sandwich plate decreases, absorbed energy by every component of plate decreases slowly. But the trend that top face-sheet is larger than honeycomb core than bottom face-sheet is always maintained. In addition, the slip time increases, the stick time decreases first and then increases. The proportion of stick time decreases first and then increases rapidly, and the proportion of stick time is the smallest at 45°.

Key words: aluminum honeycomb sandwich plate, low-velocity impact, impact angle, slip, stick, composite

CLC Number:

TB332

XIE Xin, DUAN Yue-chen, QI Jia-qi. EFFECT OF IMPACT ANGLE ON THE LOW-VELOCITY IMPACT PERFORMANCEOF ALUMINUM HONEYCOMB SANDWICH PLATE[J]. Composites Science and Engineering, 2020, 0(4): 19-27.

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