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Effect of projectile head style on high gacceleration waveform of Hopkinson bar calibration system 被引量:1

弹头形状对Hopkinson杆校准系统高g值加速度波形的影响(英文)
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摘要 The freestyle Hopkinson bar is a kind of main high g loading equipment utilized widely in calibration of high g accelerometer and other high shock conditions. The calibration experiment of accelerometer was conducted. With one-dimension stress wave theory, ANSYS/LS-DYNA software and experiment, the effect rules of the projectile's front-head style and the accelerometer's mounted base's length on acceleration waveform were analyzed. The results show that the acceleration duration inspired from Hopkinson bar is almost equal to the rising edge time of perfect half sine stress wave, and it is independent to the mounted base's length. Moreover, the projectile's fronthead style is a main affecting factor, and the projectiles with less Conical degrees will produce the lower amplitude and longer acceleration duration.
作者 徐鹏
出处 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2015年第1期1-6,共6页 测试科学与仪器(英文版)
关键词 Hopkinson bar high g acceleration stress wave waveform adjustment Hopkinson杆 高g值加速度 应力波 波形调节
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