层合板螺栓连接结构疲劳寿命预测
收稿日期: 2014-05-30
修回日期: 2014-07-03
网络出版日期: 2014-08-04
Fatigue life prediction of laminated bolted joint structures
Received date: 2014-05-30
Revised date: 2014-07-03
Online published: 2014-08-04
为了准确预测复合材料连接结构损伤的产生和扩展,基于单向板疲劳性能预测层合板螺栓连接结构疲劳寿命。用T300/BMP-316单向板试验数据对正则化疲劳寿命与剩余强度的参数进行拟合;在复合材料基体主控失效判据基础上增加纤维失效和分层失效判据,改进基于断裂韧性的失效准则判定损伤的产生和扩展;采用二级载荷疲劳寿命等效实现损伤的非线性累积,再对相应的损伤进行材料性能退化。预测结果与试验对比表明:对不同几何参数层合板连接结构的对数寿命预测与试验误差在5%以内,对不同应力水平下层合板连接结构的对数寿命预测与试验误差在10%以内,最终破坏模式及损伤区域的预测与试验结果吻合良好。
刘建明 , 万小朋 , 赵美英 . 层合板螺栓连接结构疲劳寿命预测[J]. 航空学报, 2015 , 36(6) : 1867 -1875 . DOI: 10.7527/S1000-6893.2014.0164
In order to accurately predict the onset and progression of composite structures fatigue damage, a method on the basis of unidirectional laminates fatigue property is used to predict the fatigue life of laminated bolted joint structures. The primary task is fitting the parameter of normalized life model and residual strength by T300/BMP-316 laminates test data. An improved fracture toughness-based failure criterions are used to determine fatigue damage onset and propagation, while fiber and delamination failure criterion is added to matrix-dominated failure rule. A two-state load equivalent model is introduced to accumulate damage nonlinear before material property degradation. The error between predicted logarithm fatigue life and test results of different laminated composite structures is within 5% and the error at different stress levels is within 10%; the failure mode and failure region are shown to correlate well with test results.
Key words： composite materials; bolted joints; fatigue damage; fracture toughness; life cycle
[1] Pan Y X, Tong X Y, Li B. Experimental research on fatigue behavior of composites using energy dissipation methodology[J]. Structure & Environment Engineering, 2009, 36(1): 51-56 (in Chinese). 潘应雄, 童小燕, 李斌. 复合材料疲劳性能的能量耗散试验研究[J]. 强度与环境, 2009, 36(1): 51-56.
[2] Lian W, Yao W X. Residual stiffness-residual strength coupled model of composite laminates[J]. Acta Materiae Compositae Sinica, 2008, 25(5): 151-156 (in Chinese). 廉伟, 姚卫星. 复合材料层压板剩余刚度-剩余强度关联模型[J]. 复合材料学报, 2008, 25(5): 151-156.
[3] Min J B, Xue D, Shi Y. Micromechanics modeling for fatigue damage analysis designed for fabric reinforced ceramic matrix composites[J]. Composite Structures, 2014, 111: 213-223.
[4] Naderi M, Maligno A R. Fatigue life prediction of carbon/epoxy laminates by stochastic numerical simulation[J]. Composite Structures, 2012, 94(3): 1052-1059.
[5] Nikishkov Y, Makeev A, Seon G. Simulation of damage in composites based on solid finite elements[J]. Journal of the Americal Helicopter Society, 2010, 55(4): 042009.
[6] Hahn H T, Johannesson T. Mechanics of composite mterials[M]. New York: Pergamon Press, 1983: 135-142.
[7] Davila C G, Camanho P P, Rose C A. Failure criteria for FRP laminates[J]. Journal of Composite Materials, 2005, 39(4): 323-345.
[8] Camanho P P, Davila C G, Pinho S T, et al. Prediction of in situ strengths and matrix cracking in composites under transverse tension and in-plane shear[J]. Composites Part A: Applied Science and Manufacturing, 2006, 37(2): 165-176.
[9] Makeev A, Seon G, Lee E. Failure predictions for carbon/epoxy tape laminates with wavy plies[J]. Journal of Composite Materials, 2010, 44(1): 95-112.
[10] Manson S S, Halford G R. Practical implementation of the double linear damage rule and damage curve appoach for treating cumulative fatigue damage[J]. International Journal Fracture, 1981, 17(2): 169-192.
[11] Harris B, Gathercole N, Lee J A. Life-prediction for constant-stress fatigue in carbon-fibre composites[C]//Philosophical Transactions of the Royal Society of London A, 1997, 355: 1259-1294.
[12] Shokrieh M M, Lessard L B. Progressive fatigue damage modeling of composite materials, Part I:modeling[J]. Journal of Composite Materials, 2000, 34(13): 1056-1080.
[13] Wang D Y. Research on prediction of damage failure and fatigue life for composite bolted joints[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2006 (in Chinese). 王丹勇. 层合板接头损伤失效与疲劳寿命研究[D]. 南京: 南京航空航天大学, 2006.
[14] Gathercole N, Reiter H, Adam T. Life prediction for fatigue of T800/5435 carbon-fibre composites: 2 constant amplitude loading[J]. International Journal of Fatigue, 1994, 16(8): 523-532.
[15] Camanho P P, Matthews F L. A progressive damage model for mechanically fastened joints in composite laminates[J]. Journal of Composite Materials, 1999, 23(24): 2248-2280.
[16] Wu F Q, Yao W X. S-N curve model of composite laminate[J]. Journal of Mechanical Strength, 2004, 26(S1): 127-129 (in Chinese). 吴富强, 姚卫星. 一种复合材料层合板的S-N曲线模型[J]. 机械强度, 2004, 26(S1): 127-129.
/
| 〈 |
|
〉 |
CJA