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Design Modifications to Improve the Antishock Performance of a Stamped Base for a 2.5-in HDD

机译:设计修改以提高2.5英寸HDD冲压底座的抗震性能

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摘要

This paper presents a modified design for a stamped base for a 2.5-in hard disk drive (HDD). A stamped base is a thinner thickness and lower stiffness than a die-casting base. To improve shock performance of the stamped base, the finite element (FE) model of the HDD is constructed. Then, the FE model was verified by modal analysis. Drop test was performed to confirm the shock simulation model. Parametric analysis was used to identify the key parameters for the shock performance which were the base thickness, rib shape, number of ribs, and reinforcement. The correlation between the relative displacement and natural frequency of the HDD was investigated for each parameter. The dominant parameter was identified and applied to the FE model of the stamped base. The modified stamped-base model was then evaluated under nonoperational shock conditions.
机译:本文提出了一种用于2.5英寸硬盘驱动器(HDD)的冲压底座的改进设计。冲压基座的厚度比压铸基座的厚度薄且刚度低。为了提高冲压基座的抗震性能,构建了HDD的有限元(FE)模型。然后,通过模态分析验证了有限元模型。进行跌落测试以确认冲击模拟模型。使用参数分析来确定减震性能的关键参数,包括基础厚度,肋骨形状,肋骨数量和钢筋。对于每个参数,研究了HDD的相对位移和固有频率之间的相关性。识别出主要参数,并将其应用于冲压基体的有限元模型。然后在非运行冲击条件下评估修改后的冲压基座模型。

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