| 基于刚度降模型的复合材料层合板疲劳寿命估算 |
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| 引用本文： | 徐建新,王小玲,卢翔.基于刚度降模型的复合材料层合板疲劳寿命估算[J].中国民航学院学报,2009,27(2):26-30. |
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| 作者姓名： | 徐建新 王小玲 卢翔 |
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| 作者单位： | 中国民航大学航空工程学院,天津,300300
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| 基金项目： | 中国民航大学与北京航空航富有大学合作项目 |
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| 摘 要： | 基于有限元方法，把层合板的疲劳失效看作是单元刚度退化、应力重新分布和单元损伤不断累积的动态过程，提出了一种复合材料层合板疲劳寿命估算方法。利用MSC．Patran／Nastran建立了层合板有限元模型，进行了0/90]4S和-60／0／60]3S两种铺层方式的数值分析，静强度和疲劳寿命预测值与文献中的试验结果吻合较好。
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| 关 键 词： | 层合板 疲劳寿命 有限元 |
Fatigue Life Prediction for Composite Laminates Based on Residual Stiffness Model |
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| XU Jian-xin,WANG Xiao-ling,LU Xiang.Fatigue Life Prediction for Composite Laminates Based on Residual Stiffness Model[J].Journal of Civil Aviation University of China,2009,27(2):26-30. |
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| Authors: | XU Jian-xin WANG Xiao-ling LU Xiang |
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| Institution: | (College of A eronautieal Engineering, CA UC, Tianjin 300300, China) |
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| Abstract: | A life prediction methodology for composite laminates based on residual stiffness model is presented based on finite element method （FEM）. Hereby, the fatigue of composite laminate was considered as a dynamic process consisted of element＇s stiffness degradation, stress relocation and damage accumulation for each single element. The FEM model was set up by means of MSC.Patran/Nastran. The simulations of laminates 0/90]4Sand laminates -60/0/60] 3S were achieved and the predictions of static strength and fatigue life were in good agreement with the experimental results in the literature. |
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| Keywords: | composite laminate fatigue life FEM |
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