The Parametric Analysis of the Threshold Value Judging Mechanism in MEMS Safety and Arming Device

Abstract:

In this paper, a mechanical MEMS S&A device has been proposed. The size of the device is 10mm×13mm×0.5mm. The role of the threshold value judging mechanism is to determine the environment suffered by centrifugal force and control the sub-centrifugal slider not movement under the threshold, so as to effectively guarantee the time of long-distance arming. Through establishing the three-dimensional model of threshold value judging mechanism, establishing the force and the parameters of locking-releasing mechanism, deriving the mathematical model according to the rigid dynamic mechanics theory and establishing the finite element model by using ANSYS/LS-DYNA, appropriate threshold value judging mechanism is designed to meet two items, one item is the deformation of threshold value rod is not enough to release sub-centrifugal slider when the speed is less than 60000r/min; the other item is deformation of threshold value rod can release sub-centrifugal slider when the speed is more than 60000r/min.

• Periodical: Key Engineering Materials (Volumes 645-646)
• Pages: 968-971
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.645-646.968
• Online since: May 2015
• Authors: Fu Fu Wang*, Wen Zhong Lou, Fang Yi Liu, Da Kui Wang, Ming Rong Zhang, Cheng Gang Xu
• Keywords: Arming Device, MEMS, Safety Device, Threshold Value Judging Mechanism

References

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DOI: 10.1109/nems.2013.6559841