Multiphysics modeling approach for micro electro-thermo-mechanical actuator: failure mechanisms coupled analysis

The lifetime of micro electro-thermo-mechanical actuators with complex electro-thermo-mechanical coupling mechanisms can be decreased significantly due to unexpected failure events. Even more serious is the fact that various failures are tightly coupled due to micro-size and multi-physics effects. I...

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Main Authors:	Jinling Wang, Shengkui Zeng, Vadim Silberschmidt, Jianbin Guo
Format:	Default Article
Published:	2015
Subjects:	Mechanical engineering not elsewhere classified Coupled failure mechanisms FMMEA Multiphysics modeling μETMA Mechanical Engineering not elsewhere classified
Online Access:	https://hdl.handle.net/2134/25630
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id	rr-article-9560702
record_format	Figshare
spelling	rr-article-95607022015-01-01T00:00:00Z Multiphysics modeling approach for micro electro-thermo-mechanical actuator: failure mechanisms coupled analysis Jinling Wang (244386) Shengkui Zeng (5488835) Vadim Silberschmidt (1248129) Jianbin Guo (5120291) Mechanical engineering not elsewhere classified Coupled failure mechanisms FMMEA Multiphysics modeling μETMA Mechanical Engineering not elsewhere classified The lifetime of micro electro-thermo-mechanical actuators with complex electro-thermo-mechanical coupling mechanisms can be decreased significantly due to unexpected failure events. Even more serious is the fact that various failures are tightly coupled due to micro-size and multi-physics effects. Interrelation between performance and potential failures should be established to predict reliability of actuators and improve their design. Thus, a multiphysics modeling approach is proposed to evaluate such interactive effects of failure mechanisms on actuators, where potential failures are pre-analyzed via FMMEA (Failure Modes, Mechanisms, and Effects Analysis) tool for guiding the electro-thermo-mechanical-reliability modeling process. Peak values of temperature, thermal stresses/strains and tip deflection are estimated as indicators for various failure modes and factors (e.g. residual stresses, thermal fatigue, electrical overstress, plastic deformation and parameter variations). Compared with analytical solutions and experimental data, the obtained simulation results were found suitable for coupled performance and reliability analysis of micro actuators and assessment of their design. 2015-01-01T00:00:00Z Text Journal contribution 2134/25630 https://figshare.com/articles/journal_contribution/Multiphysics_modeling_approach_for_micro_electro-thermo-mechanical_actuator_failure_mechanisms_coupled_analysis/9560702 CC BY-NC-ND 4.0
institution	Loughborough University
collection	Figshare
topic	Mechanical engineering not elsewhere classified Coupled failure mechanisms FMMEA Multiphysics modeling μETMA Mechanical Engineering not elsewhere classified
spellingShingle	Mechanical engineering not elsewhere classified Coupled failure mechanisms FMMEA Multiphysics modeling μETMA Mechanical Engineering not elsewhere classified Jinling Wang Shengkui Zeng Vadim Silberschmidt Jianbin Guo Multiphysics modeling approach for micro electro-thermo-mechanical actuator: failure mechanisms coupled analysis
description	The lifetime of micro electro-thermo-mechanical actuators with complex electro-thermo-mechanical coupling mechanisms can be decreased significantly due to unexpected failure events. Even more serious is the fact that various failures are tightly coupled due to micro-size and multi-physics effects. Interrelation between performance and potential failures should be established to predict reliability of actuators and improve their design. Thus, a multiphysics modeling approach is proposed to evaluate such interactive effects of failure mechanisms on actuators, where potential failures are pre-analyzed via FMMEA (Failure Modes, Mechanisms, and Effects Analysis) tool for guiding the electro-thermo-mechanical-reliability modeling process. Peak values of temperature, thermal stresses/strains and tip deflection are estimated as indicators for various failure modes and factors (e.g. residual stresses, thermal fatigue, electrical overstress, plastic deformation and parameter variations). Compared with analytical solutions and experimental data, the obtained simulation results were found suitable for coupled performance and reliability analysis of micro actuators and assessment of their design.
format	Default Article
author	Jinling Wang Shengkui Zeng Vadim Silberschmidt Jianbin Guo
author_facet	Jinling Wang Shengkui Zeng Vadim Silberschmidt Jianbin Guo
author_sort	Jinling Wang (244386)
title	Multiphysics modeling approach for micro electro-thermo-mechanical actuator: failure mechanisms coupled analysis
title_short	Multiphysics modeling approach for micro electro-thermo-mechanical actuator: failure mechanisms coupled analysis
title_full	Multiphysics modeling approach for micro electro-thermo-mechanical actuator: failure mechanisms coupled analysis
title_fullStr	Multiphysics modeling approach for micro electro-thermo-mechanical actuator: failure mechanisms coupled analysis
title_full_unstemmed	Multiphysics modeling approach for micro electro-thermo-mechanical actuator: failure mechanisms coupled analysis
title_sort	multiphysics modeling approach for micro electro-thermo-mechanical actuator: failure mechanisms coupled analysis
publishDate	2015
url	https://hdl.handle.net/2134/25630
_version_	1797556352334168064

Multiphysics modeling approach for micro electro-thermo-mechanical actuator: failure mechanisms coupled analysis

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