| 金属裂纹板复合材料胶接修补结构裂纹扩展行为研究 |
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| 引用本文： | 苏维国,穆志韬,王朔.金属裂纹板复合材料胶接修补结构裂纹扩展行为研究[J].沈阳航空工业学院学报,2014(1):37-40. |
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| 作者姓名： | 苏维国 穆志韬 王朔 |
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| 作者单位： | [1]中国人民解放军海军航空工程学院青岛校区,山东青岛266004 [2]沈阳航空航天大学航空航天工程学部（院）,沈阳110136 |
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| 基金项目： | 总装“十二五”预研项目（项目编号：4010901030201） |
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| 摘 要： | 为研究金属裂纹板复合材料胶接修补结构的裂纹扩展行为,进行了LY12CZ航空铝合金裂纹板碳/环氧复合材料补片胶接修复结构的疲劳性能测试试验,观察修补结构疲劳失效模式,并测量一定疲劳周次下的铝合金板的裂纹长度.建立了考虑裂纹扩展,界面脱粘两种失效模式相互耦合的三维非线性有限元分析模型,计算出不同裂纹长度对应的疲劳寿命,对修补结构的疲劳性能进行了评估,其数值计算与试验结果吻合较好.
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| 关 键 词： | 复合材料修补 疲劳 裂纹扩展寿命 有限元 |
Research on crack growth behavior of blade-body juncture horseshoe vortex |
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| SU Wei-guo,MU Zhi-tao,WANG Shuo.Research on crack growth behavior of blade-body juncture horseshoe vortex[J].Journal of Shenyang Institute of Aeronautical Engineering,2014(1):37-40. |
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| Authors: | SU Wei-guo MU Zhi-tao WANG Shuo |
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| Institution: | 1. Qingdao Campus, Institute of Naval Aeronautical Engineering, Qingdao 266041 ; 2. Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang 110136 ) |
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| Abstract: | Fatigue crack growth test for cracked metallic plate of LY12CZ aluminum alloy repaired with adhesive bonding Carbon/epoxy composite patch is conducted to validate the crack growth behaviour of crack patching. The main fatigue failure modes observed in the test are crack growth and adhesive debonding. The crack length and debonding area are measured with different numbers of cycles. The nonlinear 3D finite element model considering adhesive debonding and crack growth are developed. The experimental and analytical results are in good agreement with each other. |
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| Keywords: | adhesively bonded composite repair fatigue crack growth life FE model |
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