基于能量分配原理的煤矿机械冲击行为研究及装置设计  

Research and Device Design of Coal Mine Mechanical Impact Behaviors Based on Energy Distribution Principle

作　　者：柴蓉霞[1] 姜潇远 王秦生 于正洋 龙雪 刘军 CHAI Rongxia;JIANG Xiaoyuan;WANG Qinsheng;YU Zhengyang;LONG Xue;LIU Jun(School of Mechanical Engineering,Xi'an University of Science and Technology,Xi'an,710054;Shaanxi Coal Chemical Industry Technology Research Institute Co.,Ltd.,Xi'an,710100;School of Safety Engineering,Xi'an University of Science and Technology,Xi'an,710054)

机构地区：[1]西安科技大学机械工程学院,西安710054 [2]陕西煤业化工技术研究院有限责任公司,西安710100 [3]西安科技大学安全工程学院,西安710054

出　　处：《中国机械工程》2024年第9期1584-1596,共13页China Mechanical Engineering

基　　金：陕西省自然科学基金(2020JM-529);陕西省自然科学基金陕西煤炭联合基金(2021JLM-08)。

摘　　要：为研究煤矿机械服役过程中的冲击损伤行为,以球形冲击物水平冲击金属矩形板料为例,获取冲击过程能量分配关系,结合实际冲击环境,设计并搭建气动水平冲击实验系统,获取不同气压下板料的冲击行为。通过仿真和实验,对理论计算得出的变形量和加速度进行验证,并运用多项式拟合方式优化输出参数加速度。将计算、实验和仿真结果作对比,结果表明,冲击过程中冲击物动能主要被材料塑性变形、运动动能和碰撞损失耗散,当被冲击板料中心区域发生断裂时,板料塑性变形和碰撞损失的能量耗散会减小。优化后的冲击过程能量分配关系的理论、实验和仿真结果吻合较好,最大偏差不超过9.39%。To study the impact damage behaviors of coal mining machinery during service,the horizontal impact of a spherical projectile on a metallic rectangular plate was used as a case study to derive the energy distribution relationship during impact processes.In line with the actual impact conditions,a pneumatic horizontal impact testing system was designed and constructed to capture the impact response of plates under varying air pressures.Through simulations and experiments,the theoretically calculated deformation and acceleration were validated,and a polynomial fitting approach was used to optimize the acceleration of output parameters.The computations,experiments,and simulations were compared.Results show that the kinetic energy of the projectile is primarily expended on plastic deformation of material,kinetic energy of motion,and collision loss during impact.When the central region of impacted plate fractures,the energy dissipates through plastic deformation and collision loss decreases.The refined theoretical,experimental,and simulation results for energy distribution relationship show good agreement during the impact processes,with a maximum deviation of less than 9.39%.

关 键 词：煤矿机械 冲击行为 能量分配 装置设计 仿真分析 

分 类 号：TH142[一般工业技术—材料科学与工程]