关键词: 航空餐车, 座椅垫, 铝合金, 爆炸响应

Abstract: The galley cart can provide a potential solution for the emergency disposal of suspected explosives in the cabin. Taking the full-size galley cart as the research object, this paper carries out implosion test and numerical simulation, reveals the dynamic response and failure characteristics of galley cart under implosion field, studies the dynamic response of galley cart under different initiation positions and different charge quantities, and compares and analyzes the influence of internal filler on the deformation mode and failure behavior of galley cart. The results show that compared with other structures of the galley cart, the side plate has the strongest energy absorption ability, but its flying speed is the largest, and the speed increases linearly with the increase of the dosage. When the explosive is placed at the middle baffle, the flying speed of the side plate of the galley cart is the smallest, so it can be used as the placement position of suspected explosives. The seat cushion under the implosion field can prevent the spread of flames, absorb the implosion energy, reduce the deformation and energy absorption of the structure of the galley cart, and play an important role in reducing the degree of explosion damage.

Key words: galley cart, seat cushion, aluminium alloy, explosive response