Study on Measurement Method of Dynamic Linearity for High G Micro Accelerometer

Yun Bo Shi; Sheng Fei Dong; Zhi Jun Zhou

doi:10.4028/www.scientific.net/KEM.609-610.908

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 609-610Study on Measurement Method of Dynamic Linearity...

Study on Measurement Method of Dynamic Linearity for High G Micro Accelerometer

Abstract:

Linearity, dynamic linearity particularly, is an important parameter in measuring the performance of an accelerometer. The Hopkinson bar has been widely used in calibration of high g accelerometer and other high overloading conditions. Based on one-dimension stress wave theory and superposition theory of elastic waves, designed a Dual Warhead Hopkinson bar to demarcate the dynamic linear parameters of high g micro accelerometer accurately. A finite element model for Hopkinson bar calibration system was created, ANSYS/LS-DYNA was employed to simulate the operation process of Hopkinson bar, and the effects of the projectile's materials, adjustment pads materials and thickness on the acceleration waveform were found.

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Periodical:

Key Engineering Materials (Volumes 609-610)

Pages:

908-913

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.609-610.908

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Online since:

April 2014

Authors:

Yun Bo Shi, Sheng Fei Dong*, Zhi Jun Zhou

Keywords:

Accelerometer, ANSYS/LS-DYNA, Dynamic Linearity, Hopkinson Bar

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* - Corresponding Author

References

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