冲击机械合理加载波形的形究

来源期刊：中南大学学报(自然科学版)1998年第2期

论文作者：李夕兵 刘德顺 刘爱华

文章页码：14 - 17

关键词：冲击机械;岩石冲击动力学;加载波形,耦合

Key words：impact machines; rock impact dynamics; loading waveform; couples

摘    要：冲击机械的工作效率很大程度上取决于冲击机械的核心部件冲击活塞撞击所产生的应力波形.作者就冲击机械的合理加载波形,从能量传递效率和有利于工作介质变形或破坏两方面进行了研究.分析中详细考虑了工作介质类型和实际冲击加载系统的影响.研究结果表明,等波阻活塞产生的矩形波是最适合于实际冲击机械的合理加载波.

Abstract: The working efficiencies of impact machines depend mainly on their main parts-pistons.Impact of pistons with different geometries and sizes on rids will generate different loading stress waveforms which result in different working efficiencies.This paper discussed stress waveforms suitable to impact loading machines from both energy transmission efficiency of impact loading system and deformation or fracture of working media respectively,which emphasized mechanical models of working media and piston geometries allowed in actual impact loading systems. It is concluded that rectangle waveforms produced by pistion with the same wave impedance and cross area as rods are the reasonable loading waveforms suitable to impact machines.