Numerical Simulation of Waveform Adjustment in high G Accelerometer Calibration System Using Hopkinson Bar

DOI

10.2991/icmmita-15.2015.37How to use a DOI?

Keywords

Hopkinson bar; Acceleration; Stress wave; Waveform adjustment.

Abstract

High-G accelerometer impact excitation using Hopkinson pressure bar was introduced. The impact excitation course was simulated on ANSYS/LS-DYNA using Lagrange's method and Johnson-Cook constitutive model. The effects of projectile nose shape, nose length, and adjustment pad material on acceleration waveforms were studied. The simulated results are in good agreement with the experimental results. The results show that projectiles with small nose taper or with large nose length will impact and produce acceleration waveform pulses with long rising time, low amplitude, and large pulse width. For adjustment pad material with small yield stress, the pulses of corresponding acceleration waveforms have long rise time, low amplitude, and large pulse width.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xing-liang Zhao
AU  - Xin-liang Li
AU  - Peng Xu
AU  - Da-zhi Zhang
PY  - 2015/11
DA  - 2015/11
TI  - Numerical Simulation of Waveform Adjustment in high G Accelerometer Calibration System Using Hopkinson Bar
BT  - Proceedings of the 2015 3rd International Conference on Machinery, Materials and Information Technology Applications
PB  - Atlantis Press
SP  - 182
EP  - 190
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmmita-15.2015.37
DO  - 10.2991/icmmita-15.2015.37
ID  - Zhao2015/11
ER  -