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  • 學位論文

顯示器塑膠底座幾何結構補強肋之研究

A Study of the Structure Rib Geometry on Display Base

指導教授 : 蔡瑞益

摘要


中文摘要 在液晶顯示器開發過程中,底座是支撐液晶顯示器重要的零件, 底座的穩定性十分重要,本文主要是探討液晶顯示器塑膠底座的補強 肋幾何結構,首先利用Pro Engineer繪圖軟體繪製出不同幾何結構的 補強肋。電腦輔助分析軟體MSC Patran進行前處理MSC MARC求解器 進行後處理,輸出分析結果。再以實驗值比較分析結果,歸納出較佳 的補強結構方式。 一般顯示器的底座以塑膠射出成型為主,目前的主要塑膠原料為 ABS塑膠。增加厚度為0.6mm ~ 3.0mm之鐵板(SECC ;SCGG)以螺絲鎖 固是補強塑膠底座最快速的方法。但由於成本較高目前通常不採用, 成本較高的原因為裝工時較長以及材料成本增加。因此目前最常使用 的方式就是以不同形狀的補強肋,達到提升塑膠底座的剛性。 分析結果發現,要增加塑膠底座的強度就必須增加補強肋的數量 ,但並非胡亂的增加補強肋數量。補強肋加上特殊的幾何形狀設計, 有強化的效果,根據不同的設計方式,對於抗扭轉力,皆有提升的效 果,藉由模擬結果,瞭解不同的結構設計,對於抗扭轉的強度的差異 比較。以交錯型的設計最佳,且連續的補強肋會比有斷開的肋在強度 上會更好。

關鍵字

塑膠底座 補強肋 塑膠結構

並列摘要


Abstract Plastic base is an important component,it can support LCD monitor and placed on the desktop stability。This paper is to study the rib geometry of the plastic base reinforced in LCD monitor。First use of Pro Engineer CAD software created “BASE” 3D drawing with several different types rib geometry 。Then we use MSC Patran for pre-processing solver MSC MARC for post t-processing and gather analysis date。Then compare the experimental results ,summarized better structure rib geometry。 Generally the “BASE” of LCD monitor is made by ABS resin,Manufacture By injection molding。Use 0.6mm ~ 3.0mm SECC and SGCC iron plate with screw can made the plastic “BASE” stronger but by this way will increase cost。So the good method is add rib on the plastic base to make it stronger。 The results showed that to increase the geometry rib on the plastic base will make it stronger。But not arbitrarily increase the number of reinforcement ribs。With rib design, there is the effect of strengthening,According to different design methods for anti-torque, the effect of both increased, by simulation the results, understand the different structural design, the difference in the intensity of anti-reverse comparison。After analysis these six type of geometry structural,we find the XX type geometry is the better Structure in these six types rib geometry

並列關鍵字

structure Base Rib

參考文獻


碁峰資訊(2007)
"Manufacturing Processes," 8th ed., John Wiley &
【2】 陳翰生 「結合有限元素法和田口法應用於塑膠射出成品補
「MSC Patran/Marc Course Notes 」
【6】 GE Plastic Design Guide, GE Plastics, Pittsfield,

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