Characterization and Experimental Verification of Transverse Tensile Stress Concentration Coefficient in SiC/TC4 Composites

doi:10.13675/j.cnki.tjjs.190327

Journal of Propulsion Technology ›› 2020, Vol. 41 ›› Issue (5): 1185-1192.DOI: 10.13675/j.cnki.tjjs.190327

• Material,Propellant and Fuel • Previous Articles Next Articles

Characterization and Experimental Verification of Transverse Tensile Stress Concentration Coefficient in SiC/TC4 Composites

Key Laboratory of Advanced Measurement and Test Technique for Aviation Propulsion System,Liaoning Province, School of Aero-Engine,Shenyang Aerospace University,Shenyang110136,China

Published:2021-08-15

SiC/TC4复合材料横向拉伸应力集中系数的表征及试验验证

沙云东¹，姜卓群¹，骆丽¹，艾思泽¹，栾孝驰¹

沈阳航空航天大学航空发动机学院辽宁省航空推进系统先进测试技术重点实验室，辽宁沈阳 110136

基金资助:
中航产学研创新基金（cxy2013SH17）。

Abstract

Abstract: For the problem of stress concentration in the matrix of unidirectional fiber reinforced composite with uniform arranged fiber under transverse tensile load, a method to characterize the stress concentration coefficient of matrix under transverse tensile load was presented. Based on the composite micro-mechanical research method, the Representative Volume Element (RVE) model is programmed to impose periodic boundary conditions，the stress concentration coefficient of matrix under single and biaxial transverse tensile load was calculated. The validity of the model was verified by the transverse tensile test of unidirectional fiber-reinforced SiC/TC4 composite plate. Based on the established model, the stress concentration coefficient of different fiber volume fraction, material composition and temperature was calculated and the influence of them was analyzed. The simulation results show that the uniaxial transverse tensile stress concentration coefficient increases with the increase of fiber volume fraction, and the biaxial transverse tensile stress concentration coefficient decreases first and then increases with the increase of fiber volume fraction. In the range of 20℃~500℃, the maximum value of the uniaxial and the biaxial transverse tensile stress concentration coefficient is 2.8 and 2.4, respectively.

Key words: Composites;Stress concentration;Machanical performance;Meso-mechanical model;Load

摘要： 针对纤维均匀排布的单向纤维增强复合材料在横向拉伸荷载下基体产生应力集中的问题，提出了横向拉伸荷载下基体应力集中系数的表征方法。基于复合材料细观力学理论，通过编写程序在代表体积元（Representative Volume Element, RVE）模型上施加周期性边界条件，实现了单、双轴横向拉伸荷载下基体应力集中系数的计算，并通过单向纤维增强SiC/TC4复合材料板的横向拉伸试验验证了所建模型的有效性。利用所建模型计算不同纤维体积分数、材料组分以及温度条件下基体应力集中系数并分析其影响规律。计算结果表明：单轴横向拉伸应力集中系数随着纤维体积分数的增加而增大，双轴横向拉伸应力集中系数随着纤维体积分数的增加呈现出先减小后增大的趋势；在20℃~500℃区间内，单轴横向拉伸应力集中系数最大可达2.8，双轴横向拉伸应力集中系数最大达2.4。

关键词: 复合材料;应力集中;力学性能;细观力学模型;载荷

SHA Yun-dong¹, JIANG Zhuo-qun¹, LUO Li¹, AI Si-ze¹, LUAN Xiao-chi¹. Characterization and Experimental Verification of Transverse Tensile Stress Concentration Coefficient in SiC/TC4 Composites[J]. Journal of Propulsion Technology, 2020, 41(5): 1185-1192.

沙云东，姜卓群，骆丽，艾思泽，栾孝驰. SiC/TC4复合材料横向拉伸应力集中系数的表征及试验验证[J]. 推进技术, 2020, 41(5): 1185-1192.

References

[1] 梁春华. 连续纤维增强的金属基复合材料部件在航空涡扇发动机上的应用[J]. 航空制造技术, 2009， 15(10): 32-35.
[2] 王玉敏，张国兴，张旭，等. 连续SiC纤维增强钛基复合材料研究进展[J]. 金属学报， 2016， 52(10):1153-1170.
[3] Aghdam M M， Pavier M J， Smith D J. Micro-Mechanics of Off-Axis Loading of Metal Matrix Composites Using Finite Element Analysis[J]. International Journal of Solids & Structures， 2001， 38(22): 3905-3925.
[4] Hu S. The Transverse Failure of a Single-Fiber Metal-Matrix Composite: Experiment and Modeling[J]. Composites Science and Technology， 1996， 56(6): 667-676.
[5] Akser E O， Choy K L. Finite Element Analysis of the Stress Distribution in a Thermally and Transversely Loaded Ti-6Al-4V/SiC Fiber Composite[J]. Composites Part A， 2001， 32(2): 243-251.
[6] Zahl D B， Schmauder ， S.Transverse Strength of Continuous Fiber Metal Matrix Composites[J]. Computational Materials Science， 1994， 3(2): 293-299.
[7] 赵冰，姜波，高志勇，等. 连续SiC纤维增强钛基复合材料横向强度分析[J]. 稀有金属， 2013， 37(3): 372-377.
[8] Soden P D， Hinton M J， Kaddour A S. Lamina Properties， Lay-Up Configurations and Loading Conditions for a Range of Fiber-Reinforced Composite Laminates[J]. Composites Science and Technology， 1998， 58(7):1011-1022.
[9] 周熠，黄争鸣. 考虑含界面裂纹应力集中系数的复合材料强度计算[J]. 航空工程进展， 2017, (2).
[10] 雷友锋，魏德明，高德平. 细观力学有限元法预测复合材料宏观有效弹性模量[J]. 燃气涡轮试验与研究， 2003， 16(3): 11-15.
[11] 黄争鸣. 根据原始纤维和基体性能预报复合材料破坏与强度[C]. 西安：中国力学学会、西安交通大学2013年中国力学大会， 2013.
[12] 刘文博，张洪涛，王荣国，等. 用有限元法对CF/PPEK热塑性复合材料等效模量计算[J]. 哈尔滨工业大学学报， 2006， 38(4): 535-537.
[13] Sun C T， Vaidya R S. Prediction of Composite Properties from a Representative Volume Element [J]. Composites Science and Technology， 1996， 56(2): 171-179.
[14] Hori M， Nemat Nasser S. On Two Micromechanics Theories for Determining Micro-Macro Relations in Heterogeneous Solids[J]. Mechanics of Materials， 1999， 31(10): 667-682.
[15] Hollister S J， Kikuchi N. A Comparison of Homogenization and Standard Mechanics Analysis for Periodic Porous Composites[J]. Computational Mechanics， 1992， 10(2): 73-95.
[16] Xia Z， Chen Y， Ellyin F. A Meso/Micro-Mechanical Model for Damage Progression in Glass Fiber/Epoxy Cross-Ply Laminates by Finite-Element Analysis[J]. Composites Science and Technology， 2000， 60(8): 1171-1179.
[17] 张超，许希武，严雪. 纺织复合材料细观力学分析的一般性周期性边界条件及其有限元实现[J]. 航空学报， 2013， 34(7): 1636-1645.
[18] Tang X， Whitcomb J D. General Techniques for Exploiting Periodicity and Symmetries in Micromechanics Analysis of Textile Composites[J]. Journal of Composite Materials， 2003， 37(13): 1167-1189.
[19] 李庆，杨晓翔. 基于周期性边界条件的炭黑填充橡胶复合材料力学行为的预测[J]. 复合材料学报， 2013， 30(6): 159-167.
[20] Smit R J M， Brekelmans W A M， Meijer H E H. Prediction of the Mechanical Behavior of Nonlinear Heterogeneous Systems by Multi-Level Finite Element Modeling [J]. Computer Methods in Applied Mechanics and Engineering， 1998， 155(1-2): 181-192.
[21] Suquet P. Elements of Homogenization Theory for Inelastic Solid Mechanics[C]. Berlin: Homogenization Techniques for Composite Media， 1987: 194-275.
[22] 沙云东，丁光耀，田建光，等. 纤维增强复合材料力学性能预测及试验验证[J]. 航空动力学报， 2018， 33(10): 2324-2332.
[23] Kaddour A， Hinton M. Input Data for Test Cases Used in Benchmarking Triaxial Failure Theories of Composites[J]. Journal of Composite Materials， 2012， 46(19-20):2295-2312.
[24] Kaddour A， Hinton M， Smith P， et al. Mechanical Properties and Details of Composite Laminates for the Test Cases Used in the Third World-Wide Failure Exercise[J]. Journal of Composite Materials， 2013， 47(20-21):2427-2442.

Characterization and Experimental Verification of Transverse Tensile Stress Concentration Coefficient in SiC/TC4 Composites

SiC/TC4复合材料横向拉伸应力集中系数的表征及试验验证

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