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航空轮胎爆裂所产生的高速轮胎碎片是在航空结构设计时候必须考虑的一种严重威胁,而碎片冲击的方式(冲击角度和速度)直接决定了冲击的危害程度。根据设计原则和适航要求,需要对轮胎碎片不同冲击条件下的冲击危害进行研究,进而避免航空结构在使用中遭受严重的冲击损坏。在实验验证的基础上,通过数值计算研究了航空铝合金薄板在多种冲击角度和速度下的动态响应,并对计算结果进行了对比分析。结果表明,该型铝合金薄板能抵抗最大角度为90°和最大速度为135 m·s~(-1)的轮胎碎片冲击。
High-speed tire debris from burst aircrafts is a serious threat that must be considered when designing aeronautical structures. The manner in which the fragments impact (impact angle and speed) directly determines the extent of the impact. According to design principles and airworthiness requirements, the impact damage under different impact conditions of tire debris needs to be studied, so as to avoid serious impact damage to the aviation structure in use. On the basis of the experimental verification, the dynamic response of the aerospace aluminum alloy sheet under various impact angles and velocities was studied by numerical calculation. The calculated results were compared and analyzed. The results show that this type of aluminum alloy sheet can resist the impact of tire fragments with a maximum angle of 90 ° and a maximum speed of 135 m · s -1.