| 摘要: | 摘要
伺服器(Server)，它是隨著網際網路的發明而被發展出來的軟、硬體
裝置。從硬體角度來看，伺服器主要分為刀鋒伺服器、機架式伺服器以及
立式伺服器(塔式伺服器)三種。然而伺服器是全年都在運作的硬體設備，
因此伺服器的可靠度相當重要，機架式伺服器會被放置於 42U/32U 機櫃
裡，因此機架式伺服器的下沉量(Sag Data)過大時，會影響伺服器在抽拉
出機架時，造成下層機架式伺服器無法順利被抽出而造成維護上的問題。
本論文的研究目的主要針對機架伺服器的基座凸包幾何輪廓之下沉量
進行分析研究，論文一共分成八組模擬條件進行模擬分析，本研究主要是
透過 Pro/Engineering Creo 建置凸包幾何輪廓的 3D 模型並利用 ANSYS
分析軟體進行凸包幾何輪廓之下沉量模擬分析，從第一組模擬分析針對 6
種凸包幾何輪廓進行模擬。結果得知 Type1 的凸包幾何輪廓之下沉量最
小。由第二組模擬條件利用 Type1 的凸包幾何輪廓以不同凸包寬度尺寸
分別為 10mm/20mm/30mm 進行模擬分析，由模擬分析結果得知在 20mm
凸包寬度尺寸之所得到的下沉量最小。
第三組模擬條件是利用 Type1 凸包幾何輪廓，由凸包設計間距分別
為 25mm/35mm/45mm 的條件下，以相同 20mm 凸包寬度及相同負載 47N
的條件下進行模擬分析，由分析結果得知凸包設計間距在 35mm，所得到
的下沉量最小。III
第四組模擬分析條件採用 Type1 凸包幾何輪廓;凸包寬度為 20mm;設
計間距 35mm;凸包高度為 1.0mm/1.2mm/1.6mm 的條件下進行模擬分析，
由分析結果得知凸包高度在 1.6mm 所得到的下沉量最小。
第五組模擬分析條件採用 Type 6 凸包幾何輪廓;凸包寬度為 20mm;設
計間距 35mm;凸包高度為 1.0mm/1.2mm/1.6mm 的條件下，由模擬分析結
果得知凸包高度在 1.6mm 所得到的下沉量最小。由此分析結果得知凸包
高度越高機殼下沉量越小。
第六組模擬分析條件是比較 1.2mm 機殼厚度加凸包及 1.6mm 機殼無
凸包的下沉量模擬分析，分析結果得知 1.6mm 機殼無凸包的下沉量最
小。
第七組模擬分析主要針對跨角角度中心分別為粗、中、細的條件下進
行 Type1~Type6 的下沉量模擬分析，結果得知在跨角角度中心分別為
粗、中、細的條件下所得的下沉量是一致的。
最後由第一組到七組分析模擬的結果，進行第八組的整機下沉量分
析，結果得知由 Type1 凸包幾何輪廓的下沉量最小。
本論文之研究結果可以替伺服器設計者提供在設計前期規劃時，在進
行凸包設計時，選擇下沉量最小的凸包幾何輪廓進行設計，避免因下沉量
過大造成機架伺服器無法順利被抽出機架而造成下層的機架式伺服器無法
進行維護…等問題。;Abstract
Server which is a hardware device developed with the invention of the
internet. From a hardware perspective, servers are mainly divided into blade
servers, rack servers, and tower servers. However, the server is a hardware
device that operates throughout the year, so the reliability of the server is very
important. The rack-mounted server will be placed in a 42U/32U cabinet.
Therefore, the sagging amount (Sag Data) of the rack-mounted server is too
large, which will affect when the server is pulled out of the rack, causing the
lower rack-mounted server to be unable to be pulled out smoothly, resulting in
maintenance... and other problems.
The purpose of this paper is to analyze and study the sagging amount of the
rack server. Divide into eight groups of research conditions for analysis. This
research is mainly to analyze the six convex hull geometric contours through
the Pro/Engineering Creo to create the geometric Form shape and use ANSYS
analysis software to do the analysis, and obtain the geometric contour with the
smallest sagging amount from the convex hull contours. From the first group of
simulation analysis, simulation is carried out for 6 kinds of convex hull
geometric contours. As a result, it is found that the convex hull geometry
contour of Type1 has the smallest sinking amount. According to the second
group of simulation conditions, the convex hull geometry profile of Type 1 is
used to simulate and analyze with different convex hull width dimensions of
10mm/20mm/30mm. The simulation analysis results show that the minimum
sinking amount is obtained at the 20mm convex hull width dimension.
The third group of simulation conditions is to use the Type1 convex hull
geometric profile. The design pitch between the convex hulls is
25mm/35mm/45mm, the same 20mm convex hull width and the same load 47N
are used for simulation and analysis. The analysis results show that the convex
hull design spacing is 35mm, the amount of sinking obtained is the smallest.
The fourth group of simulation analysis conditions adopts the Type1 convex
hull geometric profile; the convex hull width is 20mm; the design pitch is
35mm; the convex hull height is 1.0mm/1.2mm/1.6mm. The simulation
analysis is carried out, and the convex hull height is obtained from the analysis
results. The sinking amount obtained at 1.6mm is the smallest.
The fifth group of simulation analysis conditions adopts Type 6 convex hull
geometric; the width of the convex hull is 20mm; the design pitch is 35mm; the
height of the convex hull is 1.0mm/1.2mm/1.6mm. 1.6mm has the smallest VI
amount of sinking. From the analysis result, it is known that the higher the
convex hull height, the smaller the sinking amount of chassis base.
The sixth group of simulation analysis conditions is to compare the sinking
amount of the 1.2mm chassis thickness with convex hull and 1.6mm chassis
thickness without convex hull. The analysis result shows that the sinking
amount of the 1.6mm chassis thickness without convex hull is the smallest.
The seventh group of simulation analysis mainly focuses on the simulation
analysis of Type1~Type6 subsidence under the condition that the span angle
center is coarse, medium, and fine respectively. The results show that under the
condition that the span angle center is coarse, medium, and fine respectively.
The resulting sinking amount is consistent.
Finally, from the first group to the seventh group of analysis and simulation
results, the eighth group of complete whole rack chassis sinking amount
analysis is performed, and the result is that the sinking amount of the Type1
convex hull geometric is the smallest.
The research results of this paper can provide the server designer with the
ability to select the geometric contour with the smallest sagging amount for the
design in the early stage of the design of the convex hull, so as to avoid the rack
server being unable to be drawn out smoothly due to the excessive sagging
amount. The lower rack server cannot be maintained... and other issues. |
