基于落锤-弹簧碰撞系统的燃气爆炸载荷模拟加载方法研究  

RESEARCH ON GAS EXPLOSION LOAD SIMULATION LOADING METHOD BASED ON DROP WEIGHT-SPRING COLLISION SYSTEM

作　　者：李腾飞 钟冬望[1,2] 何理 司剑峰[1,3] 黄秋月 LI Tengfei;ZHONG Dongwang;HE Li;SI Jianfeng;HUANG Qiuyue(College of Science,Wuhan University of Science and Technology,Wuhan 430065,China;Hubei Intelligent Blasting Engineering Technology Center,Wuhan 430065,China;China Railway Siyuan Group Engineering Construction Company Limited,Wuhan 430063,China)

机构地区：[1]武汉科技大学理学院,武汉430065 [2]湖北省智能爆破工程技术中心,武汉430065 [3]中铁四院集团工程建设有限责任公司,武汉430063

出　　处：《力学与实践》2024年第4期796-802,共7页Mechanics in Engineering

基　　金：国家自然科学基金项目(51904210);湖北省重点研发计划项目(2020BCA084);武汉科技大学研究生创新创业基金项目(JCX2021064)资助。

摘　　要：为避免燃气爆炸实验带来的危险,可通过载荷模拟装置产生燃气爆炸载荷替代传统燃气爆炸实验。本文设计开发了一种基于落锤-弹簧碰撞系统的燃气爆炸载荷模拟装置及加载方法,通过一维弹性碰撞理论建立起了系统响应过程的运动方程,并推导得到了载荷与时间之间的函数关系;根据压力时间函数特征以正弦函数和指数函数乘积形式对燃气爆炸实测压力时程曲线进行拟合,建立了模拟燃气爆炸载荷落锤-弹簧碰撞系统参数快速计算方法;该装置及实验方法表明调整阻尼器的阻尼系数、弹簧的刚度和落锤的质量,可获得与燃气爆炸载荷特征相符的压力加载作用时长和载荷峰值。落锤-弹簧碰撞系统可以对燃气爆炸载荷进行多工况多场景的有效模拟。In order to avoid the danger caused by gas explosion experiments,the traditional gas explosion test can be replaced by generating gas explosion loads by load simulation devices.In this paper,a gas explosion load simulation device and loading method based on a drop weight-spring collision system are designed and developed,the motion equation of the system response process is established through one-dimensional elastic collision theory,and the functional relationship between load and time is derived.According to the characteristics of the pressure time function,the measured pressure time history curve of the gas explosion is fitted in the form of the product of the sinusoidal function and exponential function,and a rapid calculation method for the parameters of the drop weight-spring collision system that simulates the gas explosion load is established.The device and experimental methods show that by reducing the damping coefficient,spring stiffness,and mass of the drop weight of the damper,the pressure loading time consistent with the gas explosion load characteristics can be obtained.The drop weight-spring collision system can effectively simulate the gas explosion load in multiple working conditions and scenarios.

关 键 词：落锤实验 燃气爆炸 载荷模拟 实验装置 弹性碰撞 

分 类 号：O382.4[理学—流体力学]