为评估航空结构中常用的T300级和T800级2种碳纤维/环氧树脂复合材料层压板的冲击后压缩许用值,对2种材料体系下具有不同厚度及铺层的层板进行了低速冲击和冲击后压缩试验;讨论了冲击能量、凹坑深度、损伤面积及冲击后剩余压缩强度等之间的关系,以及厚度、铺层、表面防护等因素对其造成的影响;重点关注了2种材料体系下各组层板的目视勉强可见冲击损伤(BVID)形成条件以及含BVID层板的剩余强度.结果表明:厚度及铺层对层板的凹坑深度-冲击能量关系影响较大,而对冲击后压缩强度-凹坑深度及冲击后压缩破坏应变-凹坑深度关系影响较小,且在相同铺层比例下,BVID对应的冲击能量随厚度近似呈线性增长.X850层板的损伤阻抗性能明显优于CCF300/5228层板的,但二者损伤容限性能相当.加铜网、涂漆等表面处理显著提高了层板的损伤阻抗,但对损伤容限性能影响不大;在损伤不超过BVID时,所有CCF300/5228试件的压缩破坏应变均大于4 000με,而X850材料体系下压缩破坏应变均在3 000με之上.
参考文献
| [1] | 杨乃宾;梁伟.大飞机复合材料结构设计导论[M].北京:航空工业出版社,2009:38-40. |
| [2] | 沈真;张晓晶.复合材料飞机结构强度设计与验证概论[M].上海:上海交通大学出版社,2011:21-25. |
| [3] | AC 20-107B.Subject:composite aircraft structures,advisory circular[S].Washington D.C.,US:Federal Aviation Administration,Department of Transportation,2009. |
| [4] | 沈真;杨胜春;陈普会.复合材料抗冲击性能和结构压缩设计许用值[J].航空学报,200728(03):561-566. |
| [5] | 沈真;杨胜春;陈普会.复合材料层压板抗冲击行为及表征方法的实验研究[J].复合材料学报,200825(05):125-133. |
| [6] | 杨宇;孙侠生;杨胜春.含冲击损伤复合材料层压板压缩破坏机制试验研究[J].复合材料学报,201229(03):197-202. |
| [7] | Sebaey T A;González E V;Lopes C S.Damage resist ance and damage tolerance of dispersed CFRP laminates:Effect of ply clustering[J].Computers & Structures,2013106:96-103. |
| [8] | Choi H Y;Chang F K.A model for predicting damage in graphite/epoxy laminated composites resulting from low-velocity point impact[J].Journal of Composite Materials,199226(14):2134-2168. |
| [9] | He W;Guan Z;Li X.Prediction of permanent indentation due to impact on laminated composites based on an elasto-plastic model incorporating fiber failure[J].Computers & Structures,201396:232-242. |
| [10] | González E V;Maimi P;Camanho P P.Simulation of drop-weight impact and compression after impact tests on composite laminates[J].Computers & Structures,201294(11):3364-3378. |
| [11] | Hiroshi S;Wataru S;Yuuichiro A.Compressive be havior of impact damaged composite laminates[A].Kyoto,Japan,2007 |
| [12] | Cesari F;Dal Re V;Minak G.Damage and residual strength of laminated carbon epoxy composite circular plates loaded at the centre[J].Composites Part A:Applied Science and Manufacturing,200738(04):1163-1173. |
| [13] | 林智育;许希武.复合材料层板低速冲击后压缩强度[J].复合材料学报,200825(01):140-146. |
| [14] | ASTM D7136/D7136M-07.Standard test method for measuring the damage resistance of a fiber-reinforced polymer matrix composite to a drop-weight impact event[S].Philadel phia:ASTM International,2007. |
| [15] | ASTM D7137/D7137M-07.Standard test method for compressive residual strength properties of damaged polymer matrix composite plates[S].Philadelphia:ASTM International,2007. |
| [16] | 郑晓霞;郑锡涛;沈 真.低速冲击与准静态压痕力下复合材料层合板的损伤等效性[J].航空学报,201031(05):928-933. |
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