Title: Dynamic characteristics of MEMS inertial devices under high g-force

Authors: Tao Wang, Xiao-dong Wang, Dong Yin, Li-ding Wang

Addresses: Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Research Centre for Micro System Technology (MST), Dalian University of Technology, PR China. ' Research Centre for Micro System Technology (MST), Dalian University of Technology, Dalian, PR China. ' Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Research Centre for Micro System Technology (MST), Dalian University of Technology, PR China. ' Research Centre for MST, Dalian University of Technology, Dalian, PR China

Abstract: To study dynamic characteristics of micro-inertial components under high load, a dynamical equation including the effect of dead load (constant acceleration) is discussed. The effects were analysed with finite element method. The results show the natural frequencies of microstructure increase as the inertial force increase. A dynamic testing experimental instrument was developed, and experiment was carried out. The instrument is capable of generating a high g-force environment, imposing impact on microstructure and measuring the response signal. The experimental results show that the natural frequencies of microstructure increase as the environmental acceleration increase, and that is consistent with theoretical analysis.

Keywords: dynamic characteristics; high g-force; FEM; MEMS; microelectromechanical systems; inertial devices; dead load; constant acceleration; finite element method; FEM; microstructure.

DOI: 10.1504/IJMPT.2008.018035

International Journal of Materials and Product Technology, 2008 Vol.31 No.2/3/4, pp.386 - 399

Published online: 27 Apr 2008 *

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