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六角蜂窩結構平面內沿壁受力對巨觀性質之影響評估 = Influence ...

國立高雄大學土木與環境工程學系碩士班

六角蜂窩結構平面內沿壁受力對巨觀性質之影響評估 = Influence of the In-plane Forces Along Cell Walls on Macro Properties of Hexagonal Honeycomb Materials

Record Type:	Language materials, printed : monographic
Paralel Title:	Influence of the In-plane Forces Along Cell Walls on Macro Properties of Hexagonal Honeycomb Materials
Author:	蘇威豪,
Secondary Intellectual Responsibility:	國立高雄大學
Place of Publication:	[高雄市]
Published:	撰者;
Year of Publication:	2014[民103]
Description:	67面圖，表 : 30公分;
Subject:	蜂巢結構
Subject:	Honeycomb
Online resource:	http://handle.ncl.edu.tw/11296/ndltd/59109973110218336660
Notes:	參考書目：面53-56
Notes:	103年12月16日公開
Summary:	二維蜂巢軸受橫向載重時，所表現出來的勁度與強度皆不若其軸向高，破壞機制受諸多因素影響，非常多樣而複雜，單是橫向挫屈就有幾種可能形式。其材料性質或破壞強度的分析中，常將沿壁之軸力效果忽略。這在薄壁蜂窩結構且無側向約束的情況下，不失為一良好的近似，但對於較厚壁之蜂窩結構(例如木材)或其周邊有較強之圍束力的人造蜂窩結構(例如鋁蜂窩心材之三明治板)，此一忽略有顯著的影響。尤其是在挫屈臨界點上，軸力效應至為關件。本研究主要分析沿壁軸力對鋁蜂巢變形與挫屈之影響。除了求得相應之解析解外，也使用有限元素分析鋁蜂巢結構之挫屈行為。根據理論推導與有限元素數值分析比對的結果，顯示軸力效應為厚壁蜂窩結構受力變形以及挫屈的主要控制因素，效果可達45%的差異量。 According to the high cavity rate of honeycomb materials, the effect of the force component along cell wall is often neglected in elasticity and strength study when such kind of material is subject to the lateral loads. It is a fair approach for thin-walled honeycomb with minor lateral constraint. The corresponding buckling load can be obtained by analyzing an Euler's simply-supported column. This effect is not negligible for the thick-walled honeycomb (timber, for example) or honeycomb with strong confinement (Aluminum-Honeycomb-cored sandwich beam), especially, for the honeycomb at the threshold of buckling. Based on the theoretical analysis compared with the numerical finite element method result, the present study demonstrates that the axial force effect dominates the deformation of the thick-walled honeycomb and its buckling strength. The contribution from this effect can be up to 45%.

六角蜂窩結構平面內沿壁受力對巨觀性質之影響評估 = Influence of the In-plane Forces Along Cell Walls on Macro Properties of Hexagonal Honeycomb Materials
蘇, 威豪

六角蜂窩結構平面內沿壁受力對巨觀性質之影響評估 = Influence of the In-plane Forces Along Cell Walls on Macro Properties of Hexagonal Honeycomb Materials / 蘇威豪撰 - [高雄市] : 撰者, 2014[民103]. - 67面 ; 圖，表 ; 30公分.
參考書目：面53-56103年12月16日公開.
蜂巢結構Honeycomb

六角蜂窩結構平面內沿壁受力對巨觀性質之影響評估 = Influence of the In-plane Forces Along Cell Walls on Macro Properties of Hexagonal Honeycomb Materials
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330 $a 二維蜂巢軸受橫向載重時，所表現出來的勁度與強度皆不若其軸向高，破壞機制受諸多因素影響，非常多樣而複雜，單是橫向挫屈就有幾種可能形式。其材料性質或破壞強度的分析中，常將沿壁之軸力效果忽略。這在薄壁蜂窩結構且無側向約束的情況下，不失為一良好的近似，但對於較厚壁之蜂窩結構(例如木材)或其周邊有較強之圍束力的人造蜂窩結構(例如鋁蜂窩心材之三明治板)，此一忽略有顯著的影響。尤其是在挫屈臨界點上，軸力效應至為關件。本研究主要分析沿壁軸力對鋁蜂巢變形與挫屈之影響。除了求得相應之解析解外，也使用有限元素分析鋁蜂巢結構之挫屈行為。根據理論推導與有限元素數值分析比對的結果，顯示軸力效應為厚壁蜂窩結構受力變形以及挫屈的主要控制因素，效果可達45%的差異量。 According to the high cavity rate of honeycomb materials, the effect of the force component along cell wall is often neglected in elasticity and strength study when such kind of material is subject to the lateral loads. It is a fair approach for thin-walled honeycomb with minor lateral constraint. The corresponding buckling load can be obtained by analyzing an Euler's simply-supported column. This effect is not negligible for the thick-walled honeycomb (timber, for example) or honeycomb with strong confinement (Aluminum-Honeycomb-cored sandwich beam), especially, for the honeycomb at the threshold of buckling. Based on the theoretical analysis compared with the numerical finite element method result, the present study demonstrates that the axial force effect dominates the deformation of the thick-walled honeycomb and its buckling strength. The contribution from this effect can be up to 45%.
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