| 115 | 0 | 274 |
| 下载次数 | 被引频次 | 阅读次数 |
为了给临近空间工程应用提供依据，对三维编织预埋刺辊连接圆管结构进行了力学性能探索。首先，对三维编织单胞细观结构进行设计和分析，得到弹性模量和泊松比等基本力学参数。然后，对三维五向（3D5D）编织预埋刺辊连接复合材料圆管进行拉伸和压缩力学性能测试，分析影响承载力学性能的结构设计参数，讨论编织角、编织厚度和编织构型对圆管承载能力的影响因素。最后，通过损伤形貌分析圆管结构的失效机制，并利用扫描电镜观测并分析微观结构损伤机理。结果表明：在同样外径情况下，3D5D编织比三维全五向编织的拉伸失效载荷大；在同样编织构型和外径情况下，圆管壁越厚，压缩失效载荷越大。ϕ30t3-C圆管获得了最大的压缩失效载荷，损伤形貌表现为刺辊接头滑脱失效；ϕ30t2.5-T和ϕ25t3-T圆管均获得了较大的拉伸失效载荷，平均超过120 kN，失效形貌表现为刺辊接头拉脱与圆管端部纤维胀裂；ϕ30t3-T圆管拉伸平均失效载荷超过105 kN。研究结果可为临近空间浮空器结构轻质高强承载设计和飞行应用提供重要的科学依据。
Abstract：The mechanical properties of three-dimensional(3D)braided pre-embedded licker-in connecting tubular structures were investigated to provide a basis for near-space engineering applications.First, the meso-structure of a 3D braided unit cell was designed and analyzed to obtain fundamental mechanical parameters, such as elastic modulus and Poisson's ratio. Subsequently, tensile and compressive mechanical tests were conducted on 3D five-directional(3D5D)braided composite tubes with pre-embedded licker-in connections. The structural design parameters influencing load-bearing performance were analyzed, including the effects of the braiding angle, thickness, and configuration on the tube's load capacity.Finally, the failure mechanisms of the tubular structures were examined through damage morphology analysis, and macroscopic structural damage mechanisms were investigated using scanning electron microscopy.The results indicate that under the same outer diameter, 3D5D braided tubes exhibit higher tensile failure loads than 3D5D fully braided tubes. For tubes with identical braiding configurations and outer diameter,the wall thickness enhances compressive failure load, with the φ30t3-C tube achieving the highest compressive failure load and the failure mode being manifested as licker-in joint slippage. Meanwhile, both the-φ25t3-T and φ30t2.5-T tubes demonstrate high failure loads, with average tensile loads exceeding 120 kN and the failure mode involves licker-in joint pull-out and fiber bursting at the tube ends. The φ 30t3-T tube exhibits an average tensile failure load of over 105 kN. The findings serve as an important sci-entific reference for light-weight, high-strength load-bearing design and flight applications of near-space aerostats.
[1]XU K, QIAN X M. Analytical prediction of the elastic properties of 3D braided composites based on a new multiunit cell model with consideration of yarn distortion[J]. Mechanics of Materials, 2016,92:139-154.
[2]ZHOU H L,PAN Z X,et al.Experimental and numerical investigation of the transverse impact damage and deformation of 3-D circular braided composite tubes from meso-structure approach[J].Composites Part B:Engineering, 2016, 86:243-253.
[3]张超，许希武，毛春见．三维编织复合材料渐进损伤模拟及强度预测[J]．复合材料学报，2011,28(2):222-230.ZHANG C, XU X W, MAO C J. Progressive damage simulation and strength prediction of 3D braided composite[J]. Acta Materiae Compositae Sinica,2011,28(2):222-230.
[4]杨志贤，张明，李昂，等．含孔隙缺陷三维五向编织复合材料偏轴拉伸力学性能分析[J]．北京航空航天大学学报，2022,48(4):569-577.YANG Z X, ZHANG M, LI A, et al. Offaxis tensile mechanical properties of 3D five-directional braided composites with void defects[J].Journal of Beijing University of Aeronautics and Astronautics,2022,48(4):569-577.
[5]顾逸东．从高空气球到载人航天[J]．现代物理知识，2023,35(S1):192-199.
[6]顾逸东．关于空间科学发展的一些思考[J]．中国科学院院刊，2022,37(8):1031-1049.GU Y D. Thoughts on space science development[J]. Bulletin of Chinese Academy of Sciences,2022,37(8):1031-1049.
[7]杜善义．工程科学与科技强国[J]．科技导报，2020,38(10):41-43.
[8]汪民乐．国家战略安全态势分析研究综述[J]．火箭军工程大学学报，2023,37(1):1-9.WANG M L.Overview of national strategic security situation analysis[J]. Journal of Rocket Force University of Engineering,2023,37(1):1-9.
[9]LI S J,ZOU S,DAI L Y,et al.Damage mechanism of carbon-fiber-reinforced-plastic pipe based on reverse and forward curvature drilling[J].Composite Structures,2022,292:115700.
[10]ZHU H, DU X B, LI D S, et al. Investigation of parameterized braiding parameters and loading directions on compressive behavior and failure mechanism of 3D four-directional braided composites[J].Composite Structures,2022,287:115357.
[11]武鲜艳．三维编织复合材料圆管轴向冲击压缩破坏细观结构和温度效应[D]．上海：东华大学，2017:122.WU X Y. Microstructure and temperature effects on axial impact compressive damage of 3-D braided composite circular tubes[D]. Shanghai:Donghua University,2017:122.
[12]刘晓东．含减纱三维五向编织复合材料拉-拉疲劳渐进损伤和失效研究[D]．无锡：江南大学，2022:120.LIU X D.Progressive damage and failure of threedimensional five-directional braided composites with yarn-reduction under tension-tension fatigue loading[D].Wuxi:Jiangnan University,2022:120.
[13]LI D S,YANG Y,JIANG L.Experimental study on the fabrication, high-temperature properties and failure analysis of 3D seven-directional braided composites under compression[J].Composite Structures,2021,268:113934.
[14]陈威，邓飙，曹大志，等．一种高抗力复合材料结构模型的抗侵彻性能仿真分析[J]．火箭军工程大学学报，2023,37(2):34-40.CHEN W,DENG B,CAO D Z,et al.Simulation analysis of penetration resistance performance of a high resistance composite material structural model[J]. Journal of Rocket Force University of Engineering,2023,37(2):34-40.
[15]王心怡，罗发，巩学慧，等．C/C复合材料表面低红外发射率薄膜研究[J]．火箭军工程大学学报，2024,38(5):88-95.WANG X Y, LUO F, GONG X H, et al.Study of low infrared emissivity films on the surface of C/C composite[J].Journal of Rocket Force University of Engineering,2024,38(5):88-95.
[16]ZUO H M,LI D S,JIANG L,et al.Longitudinal compression fatigue properties of 3D five-directional braided composites at different temperatures[J].Composite Structures,2022,291:15602.
[17]GIDEON R K,SUN B Z,GU B H.Mechanical behaviors of four-step 1×1 braided carbon/epoxy three-dimensional composite tubes under axial compression loading[J].Polymer Composites,2016,37(11):3210-3218.
[18]FANG G D, WANG B, LIANG J. A coupled FE-FFT multiscale method for progressive damage analysis of 3D braided composite beam under bending load[J]. Composites Science and Technology,2019,181:107691.
[19]LI D S,LU Z X,JIANG N,et al.High strain rate behavior and failure mechanism of three-dimensional five-directional carbon/phenolic braided composites under transverse compression[J]. Composites Part B:Engineering, 2011, 42(2):309-317.
[20]ZUO H M, LI D S, JIANG L. High temperature mechanical response and failure analysis of 3D five-directional braided composites with different braiding angles[J].Materials,2019,12(21):3506.
[21]SHI B H,ZHANG M,LIU S K,et al.Multiscale ageing mechanisms of 3D four directional and five directional braided composites’impact fracture behaviors under thermo-oxidative environment[J].International Journal of Mechanical Sciences, 2019,155:50-65.
[22]LIU X D,ZHANG D T,SUN J,et al.Refine reconstruction and verification of meso-scale modeling of three-dimensional five-directional braided composites from X-ray computed tomography data[J].Composite Structures,2020,245:112347.
[23]LIU X D,ZHANG D T,QIU H P,et al.Onaxis fatigue behaviors and failure characterization of3D5D braided composites with yarn-reduction using X-ray computed tomography[J]. Composites Science and Technology,2021,203:108585.
[24]GE L, LI H M, LIU B S, et al. Multi-scale elastic property prediction of 3D five-directional braided composites considering pore defects[J].Composite Structures,2020,244:112287.
[25]TIAN Z Y, YAN Y, LI J, et al. Progressive damage and failure analysis of three-dimensional braided composites subjected to biaxial tension and compression[J]. Composite Structures, 2018, 185:496-507.
[26]LUO H B,LI X,LI Y D,et al.Damage properties of pre-embedded connection of carbon fiber wound composite tubes[J]. Materials Today Communications,2020,25:101525.
[27]李嘉禄，刘谦．三维编织复合材料中纤维束横截面形状的研究[J]．复合材料学报，2001,18(2):9-13.LI J L, LIU Q. Study on fiber tows’cross-section in 3-D braided composites[J]. Acta Materiae Compositae Sinica,2001,18(2):9-13.
基本信息:
DOI：10.20189/j.cnki.CN/61-1527/E.202601001
中图分类号:V214.8;V414.8
引用信息:
[1]罗海波,王谦,杨燕初,等.三维编织复合材料结构多尺度力学特性[J].火箭军工程大学学报,2026,40(01):1-9.DOI:10.20189/j.cnki.CN/61-1527/E.202601001.
基金信息:
国家自然科学基金面上项目（12572399）;国家自然科学基金青年基金C类项目（12402206）; 海南省自然科学基金面上项目（523MS115）; 国家重点研发计划项目（2022YFB390180502,2022YFB3901805）