经纱路径对三维机织复合材料弯曲性能的影响  

Effect of warp yarn paths on bending properties of 3D woven composites

作　　者：赵世波 陈利[1,2] 高梓越 王晶晶[1,2] ZHAO Shibo;CHEN Li;GAO Ziyue;WANG Jingjing(Key Laboratory of Advanced Textile Composite Materials,Ministry of Education,Tiangong University,Tianjin 300387,China;School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学先进纺织复合材料教育部重点实验室,天津300387 [2]天津工业大学纺织科学与工程学院,天津300387

出　　处：《复合材料学报》2024年第9期4817-4825,共9页Acta Materiae Compositae Sinica

基　　金：国家科技重大专项(2017-Ⅶ-0011-0177);航空发动机及燃气轮机基础科学中心项目(P2022-B-IV-014-001);天津市海河实验室项目(22HHXCJC00007)。

摘　　要：设计了3种不同经纱路径的三维机织复合材料(3D woven composites,3DWC),利用试验研究、有限元分析、SEM形貌分析相结合的方法,研究了3DWC弯曲性能、损伤机制、断裂形貌特征。研究表明,经纱路径对3DWC弯曲性能有显著影响,相对于衬经平纹机织复合材料(Stuffer plain woven composites,SPWC),随着经纱浮纱长度增加,衬经斜纹和衬经缎纹机织复合材料(Stuffer twill woven composites,STWC和Stuffer satin woven composites,SSWC)弯曲强度分别增加了54.64%和127.61%,弯曲模量分别增加了44.11%和47.11%。SPWC破坏模式为经纱和衬经纱断裂,STWC和SSWC失效模式以纱线断裂和界面脱粘为主。在弯曲载荷加载过程中衬经纱起主要的承载作用,而经纱路径的差异导致3种3DWC应力传递、裂纹扩展、弯曲性能和失效模式发生变化。Three types of 3D woven composites(3DWC)with different warp paths were designed.Using a combination of experimental research,finite element analysis and SEM morphology analysis,the bending properties,damage mechanism and fracture morphology of 3DWC were studied.The results show that the warp paths have a significant effect on the bending properties of 3DWC.Compared to the stuffer plain woven composites(SPWC),with the increase of the warp yarns float length,the stuffer twill and stuffer satin woven composites(STWC and SSWC)bending strength increase by 54.64%and 127.61%,and the modulus increase by 44.11%and 47.11%,respectively.The failure modes of the SPWC are the fracture of the stuffer and the warp yarns,while the fracture modes of the STWC and SSWC are mainly yarns fracture and interface debonding.The stuffer yarns play the main role under the process of bending load,while the difference of warp yarn paths leads to the change of stress transfer,crack propagation,bending property and failure mode of three 3DWC.

关 键 词：经纱路径 弯曲性能 多尺度模型 三维机织复合材料 失效模式 

分 类 号：TB332[一般工业技术—材料科学与工程]