煤炭工程 ›› 2025, Vol. 57 ›› Issue (11): 232-240.doi: 10.11799/ce202511029

• 装备技术 • 上一篇    

防冲吸能构件吸能特性分析及结构优化研究

安栋,肖吴健,许海亮,苟雷雨,蒋孝东   

  1. 北方工业大学 土木工程学院,北京 100144
  • 收稿日期:2025-02-21 修回日期:2025-04-02 出版日期:2025-11-10 发布日期:2026-01-09
  • 通讯作者: 许海亮 E-mail:hailiang_xu@126.com

Energy absorption characteristics and strengthening optimization of anti-impact energy absorption components

  • Received:2025-02-21 Revised:2025-04-02 Online:2025-11-10 Published:2026-01-09

摘要:

为了增强防冲支架防冲让位性能以减轻因深部开采可能导致的冲击地压危害,将原有预折纹构件加强为一种新型预折纹构件。通过数值模拟,对比了加强前后构件竖向压缩下的反力变化与应变演化,研究了肋板、内嵌管和圆箍厚度对构件吸能性能的影响规律,采用了NSGA-Ⅱ遗传算法对厚度进行优化求解,最终确定了最优尺寸:肋板厚度为3.00mm,内嵌管厚度为2.45mm,圆箍厚度为4.31mm。与原构件相比,优化后构件能量吸收性能更好且反力波动更平稳,应用于支架能更好地实现防冲让位效果,研究结果可为防冲吸能构件设计提供有益参考。

关键词: 防冲吸能, 应变演化, 恒阻, 参数优化, 吸能特性

Abstract:

In order to enhance the anti-impact displacement performance of the anti-impact support bracket to reduce the impact pressure hazard caused by deep coal mining, the numerical simulation of vertical compression of the existing pre-creased components was based on, the reaction force elevation and wall strain evolution were linked together, followed by the study of the changes in wall strain after setting ribs, embedded tubes, and circular collars, exploring the law of influence of different structural parameters on the energy absorption effect of the reinforced components, and then using the NSGA-Ⅱ genetic algorithm for optimization and solution, finally determining the optimal dimensions: rib thickness of 3.00 mm, embedded tube thickness of 2.45 mm, and circular collar thickness of 4.31 mm; furthermore, through the simulation and analysis of the results, it was found that: the optimized component is better than the original component in terms of anti-impact performance, with the peak value of the reaction force rising by 8.16%, the average counterforce increasing by 46.8%,the coefficient of load fluctuation dropping by 26.3%, the total energy absorption rising by 57.08%, and the energy absorption performance being better and the reaction force fluctuation being more stable. The research results can provide useful references for the design of anti-impact energy-absorbing components.

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