本文要研究的是當安裝鎖付於伺服器金屬機殼上的DC風扇在進行工作運轉時，因風扇扇葉旋轉及風扇磁極定轉子推動時所產生的振動頻率會在機殼上產生共振，進而使得資訊產品會有局部疲勞破壞的可能，而且共振變大會讓相關的電子元件運作受影響甚至造成無法運作，如硬碟讀取、電路板晶片錫裂等問題。所以研究當鎖付風扇的平面週邊有不同的強化外型時，對震動頻率及噪音上的變化，並在相較有效的外觀上找出減振的脈絡及關係式。實驗外形共有4組分別為: (1) Item-1無強化深抽造型，(2) Item-2抽深區為進風口區抽深高度1.5 mm，(3) Item-3抽深區包覆風扇抽深高度5 mm，與(4) Item-4鎖螺絲部局部抽深抽深高度1.5 mm。
測試的變數為抽深強化的外型，其他尺寸皆固定尺寸，鋼鈑厚度皆為0.6 mm，測試用DC風扇也為同一顆，測試環境為無風吸音的無響室，進行各次實驗至少1 min以上所收集的數據並整理出尺寸關係。從測試結果發現，當DC風扇鎖附區的週邊鈑金做抽深強化外型結構愈深愈是完整的矩型其減振能力愈強，反之當風扇鎖付區週邊的強化結構深度不高或者是結構不連續不完整的其減振能力即很有限。

This paper aims to study the following: When a DC fan is mounted on a server metal case, the vibration generated by the fan blades and the interaction between the stator and rotor may induce resonance in the enclosure. Such resonance can lead to local fatigue damage in the product. Moreover, the resonance will affect the operation of related electronic components or even cause them to fail to operate, such as hard drive reading, circuit board chip tin cracking and other problems. Therefore, the study will investigate the changes in vibration frequency and noise when the fan has different reinforced shapes around the mounting plane, and find the vibration reduction process and relationship in the more effective geometric configuration. There are 4 experimental shapes: (1) Item-1: No reinforcement with a deep-drawn region, (2) Item-2: Deep-drawn region located at the air inlet, with a depth of 1.5 mm, (3) Item-3: Deep-drawn region fully enclosing the fan, with a depth of 5 mm, and (4) Item-4: Partially deep-drawn region localized around the screw fastening area, with a depth of 1.5 mm.
All other dimensions remained fixed, with the steel sheet thickness remaining constant at 0.6 mm. The same DC fan was used for testing. The test environment was a windless, sound-absorbing anechoic chamber. Each test lasted a minimum of one minute. Data was collected and dimensional relationships were compiled. The test results revealed that the deeper and more complete the deep-drawn, reinforced exterior structure around the DC fan's attachment area, the stronger its vibration damping ability. Conversely, when the reinforcement around the fan's attachment area was shallow, discontinuous, or incomplete, the damping ability was very limited.

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