Design and analysis of shock isolator for ocmo

This final report is a review of the design and screening processes of a series of shock isolators, which are specially used for protecting OCMO (oven-controlled micro-electromechanical systems oscillator) from being damaged by impact. A suspension structure was applied to this series of shock isola...

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Main Author: Wang, Xun
Other Authors: Du Hejun
Format: Final Year Project
Language:English
Published: 2014
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Online Access:http://hdl.handle.net/10356/61290
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-612902023-03-04T19:19:48Z Design and analysis of shock isolator for ocmo Wang, Xun Du Hejun School of Mechanical and Aerospace Engineering DRNTU::Engineering This final report is a review of the design and screening processes of a series of shock isolators, which are specially used for protecting OCMO (oven-controlled micro-electromechanical systems oscillator) from being damaged by impact. A suspension structure was applied to this series of shock isolators, and magnesium alloy was chosen as the base material since it was proved to be the most suitable material for making such suspension shock isolator due to its high strength, good elasticity, high damping coefficient and relatively low cost, according to the material selection charts. CAD (computer-aided design) model of each design was constructed first, and after that FEA (finite element analysis), such as modal analysis and drop test, was conducted to simulate the performance of each design in different approaches. Based on the comprehensive simulation results, the design with the tether width of 0.4 mm and the slot width of 0.1 mm was finally selected as the most proper designed shock isolator, for the reason that it is able to efficiently prevent shock energy from transferring to the OCMO, as well as to disperse most of the energy within a short period of time, under the premise of safety. Besides, numerical calculation on thermal resistance and heat transfer rate was also carried out for the OCMO, and it reveals that the micro heater is nearly isothermal and the heat loss from the OCMO is mainly due to conduction. Bachelor of Engineering (Mechanical Engineering) 2014-06-09T02:43:55Z 2014-06-09T02:43:55Z 2014 2014 Final Year Project (FYP) http://hdl.handle.net/10356/61290 en Nanyang Technological University 80 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering
spellingShingle DRNTU::Engineering
Wang, Xun
Design and analysis of shock isolator for ocmo
description This final report is a review of the design and screening processes of a series of shock isolators, which are specially used for protecting OCMO (oven-controlled micro-electromechanical systems oscillator) from being damaged by impact. A suspension structure was applied to this series of shock isolators, and magnesium alloy was chosen as the base material since it was proved to be the most suitable material for making such suspension shock isolator due to its high strength, good elasticity, high damping coefficient and relatively low cost, according to the material selection charts. CAD (computer-aided design) model of each design was constructed first, and after that FEA (finite element analysis), such as modal analysis and drop test, was conducted to simulate the performance of each design in different approaches. Based on the comprehensive simulation results, the design with the tether width of 0.4 mm and the slot width of 0.1 mm was finally selected as the most proper designed shock isolator, for the reason that it is able to efficiently prevent shock energy from transferring to the OCMO, as well as to disperse most of the energy within a short period of time, under the premise of safety. Besides, numerical calculation on thermal resistance and heat transfer rate was also carried out for the OCMO, and it reveals that the micro heater is nearly isothermal and the heat loss from the OCMO is mainly due to conduction.
author2 Du Hejun
author_facet Du Hejun
Wang, Xun
format Final Year Project
author Wang, Xun
author_sort Wang, Xun
title Design and analysis of shock isolator for ocmo
title_short Design and analysis of shock isolator for ocmo
title_full Design and analysis of shock isolator for ocmo
title_fullStr Design and analysis of shock isolator for ocmo
title_full_unstemmed Design and analysis of shock isolator for ocmo
title_sort design and analysis of shock isolator for ocmo
publishDate 2014
url http://hdl.handle.net/10356/61290
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