选用多层非屈曲经编织物（NCF）作为增强体,提高了预成型体的铺覆效率及准确性,同时根据T型接头的结构特点将其组合成工字梁形式并依此设计成型模具,采用树脂传递模塑（RTM）成型工艺实现了复合材料T型接头的高效制造,并对其拉伸和压缩力学性能进行了试验研究。结果表明：T型接头拉伸破坏由孔边蒙皮纤维拉断和腹板分层拉脱造成;而压缩破坏则由腹板翻边分层屈曲和接头中部蒙皮纤维压断造成;T接头拉伸破坏载荷高于其压缩的破坏载荷。
The non-crimp fabrics（NCF） were used as reinforcement to improve the drape efficiency and accuracy.According to the structural characteristics of the T-joint,an I-beam composed of four T-joints was manufactured via resin transfer moulding（RTM） process.The tensile and compressive properties of T-joint were tested.The results show that the tensile failure of T-joint can be reckoned to the fiber broken of skin around the holes and the delamination of web.While the compressive failure is resulted from the buckling of flange and fiber snap of skin at the middle of T-joint.The failure load of T-joint tension is greater than those of compression.
参考文献
| [1] | Toftegaard H, Lystrup A. Design and test of lightweight sandwich T-joint for naval ships [J]. Composites Part A, 2005, 36(8): 1055-1065. |
| [2] | Cartie D D R, Anno G D, Poulin E, et al. 3D reinforcement of stiffener-to-skin T-joints by Z-pinning and tufting [J] .Engineering Fracture Mechanics, 2006, 73(16): 2532-2540. |
| [3] | ShenoiR A, Hawkins G L. Influence of material and geometry variations on the behaviour of bonded tee connections in FRP ships [J]. Composites, 1992, 23(5): 335-345. |
| [4] | Phillips H J, Shenoi R A. Damage tolerance of laminated tee joints in FRP structures[J]. Composites Part A, 1998, 29(4) : 465-478. |
| [5] | Rugg K L, Cox B N, Massabo R. Mixed mode delamination of polymer composite laminates reinforced through the thickness byz-fihers[J]. Composites Part A, 2002, 33(2): 177-190. |
| [6] | 益小苏.先进复合材料技术研究与发展[M].北京:国防工业出版社,2006. |
| [7] | 何海东,贾玉玺,丁妍羽,等.无弯曲纤维织物面内渗透率的结构相关性[J].复合材料学报,2011,28(5):70-76. |
| [8] | 马立.RFI工艺成型碳NCF/环氧5228A复合材料研究[J].玻璃钢/复合材料,2008(1):21-24 |
| [9] | 顾璐英,蒋高明.多轴向经编织物编织工艺探讨[J].玻璃钢/复合材料,2010(3):76-80 |
| [10] | 章亚东,段跃新,左璐,等.经编织物法制备连续纤维增强热塑性复合材料的微观形貌和浸润过程分析[J].复合材料学报,2004,21(6):63-69. |
| [11] | Yu W R, Philip H, Andrew L. Finite element forming simulation for non- crimp fabrics using a non- orthogonal constitutive equation [J]. Composites Part A, 2005, 36(8): 1079-1093. |
| [12] | Meyer B C, Katsiropoulos C V, Pantelakis S G. Hot forming behavior of non-crimp fabric PEEK/C thermoplastic composites [J]. Composite Structures, 2009, 90(2), 225-232. |
| [13] | Lee J S, Seok J H, Yu W R, et al. The effect of blank holder force on the stamp forming behavior of non-crimp fabric with a chain stitch [J]. Composites Science and Technology, 2007, 67(3/4) : 357-366. |
| [14] | 韩帅,段跃新,李超,等.不同针织结构经编碳纤维复合材料弯曲性能[J].复合材料学报,2011,28(5):52-57. |
| [15] | 梁志勇,张佐光,周金来.多向无皱褶纤维织物及复合材料[J].玻璃钢/复合材料,1994(6):17-21 |
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