Analysis of Drop Impact and Optimal Design for lash Drives
Date Issued
2009
Date
2009
Author(s)
Tu, Chun-Jung
Abstract
This study analyzes the drop impact of a flash drive that is a highly non-linear dynamic problem. The finite element method, the direct integration method and software are used for the analysis. Acceleration that is used to judge the failure of a flash drive, referred to the CNS test standard, the accelerations and the stress distribution of a flash drive in different drop directions, and the influence of different structural parameters are studied. Taguchi optimal method is used with calculation data. Minimizing the acceleration of a flash drive due to drop impact, the structure of flash drive with optimal combination of parameters is optimized. The impact acceleration is reduced 16% compared with the current design. Based on the stress analysis, the drop direction of maximum stress is E3, but the stress value will not cause the destruction of the material. This study proposes the combination of the CAE method and Taguchi optimal method and offers a designing method for other products to reduce the design cost effectively.
Subjects
drop impact
finite element method
Taguchi method
optimization
acceleration
Type
thesis
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ntu-98-R90522623-1.pdf
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