基于加速试验方法的复合材料长期寿命预测

摘要/Abstract

摘要： 将跨尺度失效理论(Micro-Mechanics of Failure,简称“MMF”)、加速试验方法(Accelerated Testing Methodology,简称“ATM”)和渐进损伤分析(Progressive Damage Analysis,简称“PDA”)三种方法相结合,提出了一种可以预测复合材料长期寿命和失效过程的分析方法。对MMF失效准则进行改进,区分了基体拉伸和压缩细观失效模式。建立了MMF/ATM/PDA方法有限元计算流程,并在ABAQUS中使用用户自定义材料(UMAT)实现。通过对不同温度下复合材料纵向和横向单向板的拉伸、压缩试验测得静载和疲劳寿命,得到复合材料MMF/ATM细观临界值。采用MMF/ATM/PDA方法对准各向同性开孔板压缩长期寿命进行了预测,并对破坏过程进行了模拟,分析了纤维和基体的失效过程。试验结果和预测结果吻合良好,验证了方法的合理性。

关键词: 复合材料, 加速试验方法, 跨尺度失效, 渐进失效分析, 寿命预测

Abstract: A long-term fatigue life and failure process analysis methods were proposed based on micro-mechanics of failure (MMF), accelerated testing methodology (ATM) and progressive damage analysis (PDA) combined method. MMF theory was modified by distinguishing matrix tensile and compressive failure. The calculation process of MMF/ATM/PDA analysis method in finite element analysis was established. The implementation procedure in ABAQUS using UMAT was described in detail. The time and temperature dependent MMF/ATM critical parameters of composite materials were determined by measuring the static and fatigue life at different temperatures in the longitudinal and transverse, tension and compression directions of unidirectional CFRP. Long-term life of open-hole composite laminates and the damage process of fiber and matrix were predicted based on MMF/ATM/PDA combined method. The results show that the test results and the prediction results are in good agreement, demonstrating the validity of this method.

Key words: composite materials, acelerated testing methodology, micro-mechanics of failure, progressive damage analysis, life prediction

中图分类号:

V257
TB332

康军, 陈永强, 陈尚, 穆星科. 基于加速试验方法的复合材料长期寿命预测[J]. 玻璃钢/复合材料, 2017, 0(3): 25-30.

KANG Jun, CHEN Yong-qiang, CHEN Shang, MU Xing-ke. LONG-TERM LIFE PREDICTION OF COMPOSITE MATERIALS BASED ON ACCELERATED TESTING METHODOLOGY[J]. Fiber Reinforced Plastics/Composites, 2017, 0(3): 25-30.

参考文献

[1] Miyano Y, Kanemistu M, Kunio T, et al. Role of matrix resin on fracture strengths of unidirectional CFRP[J]. Journal of Composite Materials, 1986, 20: 520-538.
[2] Miyano Y, Nakada M, McMurray M K, et al. Prediction of flexural fatigue strength of CFRP compoistes under arbitrary frequency,stress ratio and temperature[J]. Journal of Composite Materials, 1997, 31: 619-638.
[3] Miyano Y, Nakada M, Watanabe N, et al. Time-temperature superposition principle for tensile and compressive strengths of unidirectional CFRP[C]//Proc 2003 SEM Annual Conference &Exposition on Experimental and Applied Mechanics. Charlotte: 2003.
[4] Nakada M, Miyano Y, Daicho N, et al. Time and Temperature Dependence on the Flexural Fatigue Behavior of Unidirectional Pitch-Based Carbon Fiber Reinforced Plastics[C]//Proceedings of the 1st Asian-Australasian Conference on Composite Materials (ACCM-1). Osaka, Japan: 1998.
[5] Nakada M, Miyano Y, Kinoshita M, et al. Time-temperature dependence of tensile strength of unidirectional CFRP[J]. Journal of Composite Materials, 2002, 36(22): 2567-2582.
[6] Sekine N, Nakada M, Miyano Y, et al. Time-Temperature Dependence of Tensile Fatigue Strength for GFRP/Metal and CFRP/Metal Bolted Joints[C]//Proceedings of the 13th International Conference on Composite Materials (ICCM-13). Beijing, China: 2001.
[7] Nakada M, Miyano Y. Advanced accelerated testing methodology for long-term life prediction of CFRP laminates[J]. Journal of Composite Materials, 2015, 49(2): 163-175.
[8] Ha SK, Jin KK, Huang Y. Micro-Mechanics of Failure (MMF) for Continuous Fiber Reinforced Composites[J]. Journal of Composite Materials, 2008, 42(18): 1873-1895.
[9] Cai H, Miyano Y, Nakada M, et al. Long-term fatigue strength prediction of CFRP structure based on micromechanics of failure[J]. Journal of Composite Materials, 2008, 42(8): 825-844.
[10] Cai H, Miyano Y, Nakada M. Prediction of long term flexural fatigue strength of honeycomb sandwich composites[J]. Journal of Reinforced Plastics and Composites, 2010, 29(2): 266-277.
[11] Cai, H., Y. Miyano, et al. Master curves of residual creep and fatigue strengths for damaged CFRP composites[J]. Journal of Reinforced Plastics and Composites, 2010, 29(7): 1009-1019.
[12] Cai H, Nakada M, Miyano Y, et al. Time temperature dependent strength of CFRP laminate based on strain invariant failure theory[C]//The Sixth China-Japan-US Joint Conference on Composite Proceedings. Chongqing, China: 2004.
[13] Sihn S, Park JW. MAE: an integrated design tool for failure and life prediction of composites[J]. Journal of Composite Materials, 2008, 42(18): 1967-1988.
[14] Gosse JH, Christensen S. Strain invariant failure criteria for polymers in composite materials[J]. AIAA, 2001, 1184: 11.
[15] 康军. 基于ATM的复合材料开孔及机械连接损伤失效与疲劳寿命研究[D]. 北京: 北京航空航天大学, 2015.