探索了全厚度缝合复合材料闭孔泡沫芯夹层结构低成本制造的工艺可行性及其潜在的结构效益.选用3种夹层结构形式,即相同材料和工艺制造的未缝合泡沫芯夹层和缝合泡沫芯夹层结构及密度相近的Nomex蜂窝夹层结构,完成了密度测定、三点弯曲、平面拉伸和压缩、夹层剪切、结构侧压和损伤阻抗/损伤容限等7项实验研究.结果表明,泡沫芯夹层结构缝合后,显著提高了弯曲强度/质量比、弯曲刚度/质量比、面外拉伸压缩强度、剪切强度和模量、侧压强度和模量、冲击后压缩(CAI)强度和破坏应变.这种新型结构形式承载能力强、结构效率高、制造维护成本低,可以在飞机轻质机体结构设计中采用.
参考文献
| [1] | Welker T C.Experimental and computational failure analysis of graphite/bismaleimide laminated composite and carbon foam in sandwich construction[D].Wright-Patterson AFB,OH:School of of Engineering and Management,2003. |
| [2] | Steeves C A,Fleck N A.Collapse mechanisms of sandwich beams with composite faces and a foam core,loaded in three-point bending,Part I:Analytical models and minimum weight design[J].International Journal of Mechanical Sciences,2004,46:561-583. |
| [3] | Steeves C A,Fleck N A.Collapse mechanisms of sandwich beams with composite faces and a foam core,loaded in three-point bending,Part Ⅱ:Experimental investigation and numerical modeling[J].International Journal of Mechanical Sciences,2004,46:585-608. |
| [4] | Tagarielli V L,Fleck N A,Deshpande V S.Collapse of clamped and simply supported composite sandwich beams in three-point bending[J].Composites Part B,2004,35:523-534. |
| [5] | Vadakke V,Carlsson L A.Experimental investigation of compression failure of sandwich specimens with face/core debond[J].Composites Part B,2004,35:583-590. |
| [6] | Potluri P,Kusak E,Reddy T Y.Novel stitch-bonded sandwich composite[J].Composite Structures,2003,59:251-259. |
| [7] | Cartie D D,Fleck N A.The effect of pin reinforcement upon the through-thickness compressive strength of foam-cored sandwich panels[J].Composites Science and Technology,2003,63:2401-2409. |
| [8] | Carlsson L A,Matteson R C,Aviles F,Loup D C.Crack path in foam cored DCB sandwich fracture specimens[J].Compo-sites Science and Technology,2005,65:2612-2621. |
| [9] | Sokolinsky V S,Shen Hongbin,Lev V,Steven R N.Experimental and analytical study of nonlinear bending response of sandwich beams[J].Composite Structures,2003,60:219-229. |
| [10] | 孙春方,薛元德,胡培.复合材料泡沫夹芯结构力学性能与试验方法[J].玻璃钢/复合材料,2005(2):3-6.Sun Chunfang,Xue Yuande,Hu Pei.Mechanical properties and test method for foam core sandwich structure[J].FRP/Composites,2005(2):3-6. |
| [11] | 卢子兴.复合泡沫塑料力学行为的研究综述[J].力学进展,2004,34(3):341-348.LU Zixing.A review of studies on the mechanical behavior of syntactic foamed plastics[J].Advances in Mechanics,2004,34(3):341-348. |
| [12] | Kim Jong-Man.Design of sandwich beams for concentrated loading[D].Salt Lake City:University of Utah,2001. |
| [13] | Stanley L E,Adams D O.Development and evaluation of stitched sandwich panels,NASA/CR2001211025[R].Washington:NASA,2001. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%