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为了进一步研究吸能器的机理,采用实验和数值模拟相结合的方法,对冲击载荷作用下6060T 5铝圆环列系统的动力学行为进行了研究。采用改进的SHPB实验系统并配以高速摄影设备,分别记录圆环列的入射波、透射波波形变化及变形过程。数值研究前,利用实验数据对计算模型和计算参数进行验证和标定。对工程实际中的若干工况进行了数值分析。结果表明,圆环列吸能器具有较高的吸能率,该系统通过弯曲塑性变形能来消耗冲击能量,回弹发生后整个吸能过程结束。在工程实际中,双层疏排圆环列组合方式是较好的选择。
In order to further study the mechanism of the energy absorber, the dynamic behavior of the 6060T 5 aluminum annular ring system under impact load was studied by means of a combination of experiments and numerical simulations. The improved SHPB experimental system and high-speed photographic equipment are used to record the incident wave and the transmitted wave’s variation and deformation process respectively. Before numerical study, the experimental data were used to verify and calibrate the calculation model and calculation parameters. The numerical analysis of several working conditions in engineering practice. The results show that the annular energy absorber has a high energy absorption rate. The system consumes the impact energy by bending the plastic deformation energy, and the entire energy absorption process ends after the rebound occurs. In engineering practice, the combination of double-row annular row arrangement is a better choice.