| 筋条部分开裂复合材料加筋板后屈曲性态的有限元分析 |
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| 引用本文： | 牛海英.筋条部分开裂复合材料加筋板后屈曲性态的有限元分析[J].大连大学学报,2009,30(6):75-78. |
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| 作者姓名： | 牛海英 |
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| 作者单位： | 大连水产学院,土木工程学院,辽宁,大连,116023 |
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| 摘 要： | 采用参考面单元技术并引入虚拟杆单元，建立筋条局部脱胶开裂复合材料梁／板结构后屈曲分析的有限元简化模型。着重研究不同开裂尺寸和位SLM置对复合材料层合加筋板后屈曲承载能力的影响。计算表明：开裂位置相同，开裂尺寸增加会导致后屈曲承载能力降低；开裂尺寸相同，随着其位置由筋条中心向端部移动，加筋板的后屈曲承载能力逐渐上升；值得注意的是，筋条端部开裂使加筋板的后屈曲承栽能力显著降低，其影响远大于筋条中心位置开裂。
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| 关 键 词： | 后屈曲 参考面单元 虚拟杆单元 加筋板 筋条开裂 |
FEM Analysis of Post-buckling Property of Composite Stiffened Panel |
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| NIU Hai-ying.FEM Analysis of Post-buckling Property of Composite Stiffened Panel[J].Journal of Dalian University,2009,30(6):75-78. |
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| Authors: | NIU Hai-ying |
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| Institution: | NIU Hai-ying(School of Civil Engineering,Dalian Fisheries University,Dalian 116023 China) |
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| Abstract: | The FEM(finite element model) of post-buckling analysis of composite beam/plate structure with crack between stiffener and panel is constructed using the technology of reference surface finite element,and the effect of contact is considered by using virtual bar element to avoiding the impossible overlapping deformation mode.The correctness of the model is testified by numerical examples.The effects of different dimension and location of crack on the post-buckling load of stiffened panels are studied.The num... |
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| Keywords: | post-buckling reference surface element virtual bar element stiffened panel stiffener crack |
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