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相關文獻
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題 名 | 具矩形脫層複合材料的挫屈探討=Buckling of Rectangular Delaminated Composite Plates |
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作 者 | 黃順發; 林玉華; | 書刊名 | 科技學刊 |
卷 期 | 9:3 2000.07[民89.07] |
頁 次 | 頁181-188 |
分類號 | 440.34 |
關鍵詞 | 挫屈; 複合材料; 脫層; Buckling; Composite material; Delamination; |
語 文 | 中文(Chinese) |
中文摘要 | 本文是針對具有矩形脫層的複合材料平板,當其承受平行於脫層平面的壓縮負荷 時,利用有限元素法求出其挫屈負荷及所對應的挫屆模態,並依所使用材料的不同,分短纖 維複合材料及長纖維疊層複合材料二部份來探討。在短纖維複合材料部份,將其模擬成二維 問題,以脫層長度、脫層位置為參數,求得挫屈負何及挫屈模態。在長纖維複合材料部份, 以脫層長度、脫層位置、疊層角度為參數,求得挫屈負荷及挫屈模態。結果顯示,脫層挫屈 應力會隨著脫層長度增加而降低,而相對應挫屈模態的變化,由整體型挫屈改變至混合型挫 屈,再改變至局部型挫屈;脫層位置愈接近表面,愈容易發生挫屈,且挫屈模態愈容易發生 混合型及局部型挫屈。另外,挫屈應力會隨著纖維疊層角度增加而降低,但其挫屈模態並沒 有改變。至於平板的寬度對挫屈行為並無明顯的影響。 |
英文摘要 | The buckling behavior of laminated plated with rectangle delamination under uniaxial compressive loading is studied. Finite element method was used to evaluate the buckling load and to find out the corresponding buckling mode. Materials considered include short fiber composite materials and long fiber composite materials. For shourt fiber composite materials, the delaminated plate was modeled as a two-dimensional problem by neglecting the effect of width. Two parameters, the size of the delaminated region and its position along the thickness direction, were varied to assess their influence on the buckling behavior of the plates. For long fiber composite materials, the infulences of angle-ply and cross-ply on the buckling behavior were also considered. The results indicate that the buckling loads decrease as the delamination size increases and the buckling modes change from a global type to a mixed type, then to a local type. If the position of the delamination is closer to the plate surface, the plates buckle more easily. Besides, the buckling loads decrease as the fiber angle increases, and the buckling modes do not change. The influence of plate width on the buckling behavior is not evident. |
本系統中英文摘要資訊取自各篇刊載內容。