吸能液压支架金字塔点阵吸能构件优化及试验分析  

Optimization and experimental analysis of pyramid lattice energy absorption device of energy absorption hydraulic support

作　　者：沈佳兴[1,2] 潘子豪 冷岳峰[2] 徐平[2] 范中海 SHEN Jia‑xing;PAN Zi‑hao;LENG Yue‑feng;XU Ping;FAN Zhong‑hai(Research Institute of Technology and Equipment for the Exploitation and Utilization of Mineral Resources,Liaoning Technical University,Fuxin 123000,China;School of Mechanical Engineering,Liaoning Technical University,Fuxin 123000,China)

机构地区：[1]辽宁工程技术大学矿产资源开发利用技术及装备研究院,辽宁阜新123000 [2]辽宁工程技术大学机械工程学院,辽宁阜新123000

出　　处：《振动工程学报》2024年第12期2132-2140,共9页Journal of Vibration Engineering

基　　金：中国煤炭工业协会科学技术研究指导性计划资助项目(MTKJ2010-290)。

摘　　要：为提高吸能液压支架的吸能性进而提高其安全性,设计了一种多层点阵吸能构件。根据吸能构件立柱的结构及吸能空间设计了金字塔点阵吸能构件的基本结构。以吸能构件的吸能最大、支撑力均值在允许范围内最大及支撑力波动系数最小为优化目标函数,以金字塔胞体的立足直径和跨度为优化设计变量,以吸能构件的支撑力峰值和支撑力均值在允许范围内为约束条件,利用Workbench软件分别对金字塔高度为30,40,50 mm的吸能构件结构参数进行多目标优化设计,得到三组优化解并通过对比分析确定最佳结构参数。采用压缩试验对等比例缩小的最优参数的单层吸能构件进行试验分析,结果显示其吸能量为4.18716 kJ,计算得到原尺寸单层吸能构件吸能量为113.05332 kJ,吸能构件整体吸能量为565.2666 kJ,与仿真结果相对误差仅为-9.92%。该吸能构件比传统薄壁结构吸能构件的吸能性提高50%以上,证明了优化设计的有效性和吸能构件的高吸能性。In order to improve the energy absorption and safety of the energy absorption hydraulic support,a multi-layer lattice en-ergy absorption device is designed.The basic structure of pyramid lattice energy absorption device is designed according to the structure and energy absorption space of energy absorption support column.The maximum energy absorption of the energy absorption device,the maximum mean of the support force within the allowable range,and the minimum fluctuation coefficient of the support force are taken as the optimization objective function,the base diameter and span of the pyramid cell are taken as the optimization design variables,and the constraint conditions are taken as the peak and mean of the support force of the energy absorption device within the allowable range.The Workbench software is used to optimize the structural parameters of the energy absorption device with the pyramid height of 30 mm,40 mm and 50 mm respectively.Three groups of optimization solutions are obtained and the optimal structural parameters are determined by comparative analysis.The single-layer energy absorption device with the optimal parameters reduced in the compression experiment was used for experimental analysis,and the results show that the absorption energy is 4.18716 kJ.The calculated energy absorption energy of the original single-layer energy absorption device is 113.05332 kJ,and the energy absorption energy of the whole energy absorption device is 565.2666 kJ.The relative error between the experimental results and the simulation results is only−9.92%.The energy absorption capacity of the new energy absorption device is at least 50%higher than that of the traditional thin-wall structure energy absorption device,which proves the effectiveness of the optimized design and the high energy absorption capacity of the energy absorption device.

关 键 词：吸能支架 金字塔结构 点阵吸能构件 安全性 

分 类 号：TD353[矿业工程—矿井建设] TH122[机械工程—机械设计及理论]