【作者】 刘鹏飞； 周池楼； 储进科； 郑津洋；

【Author】 Liu Peng-fei,Zhou Chi-lou,Chu Jin-ke,Zheng Jin-yang (Institute of Chemical Machinery and Process Equipment,Zhejiang University,Hangzhou 310027,China)

【机构】 浙江大学化工机械研究所；

【摘要】 基于连续损伤力学,提出一个基于能量的刚度退化模式来预测铝内衬-碳纤维/环氧树脂复合材料层合板的渐进失效特性。碳纤维/环氧树脂复合材料包含三种失效模式:纤维断裂、基体开裂、纤维/基体界面分离失效。运用包含多帧重启分析和弧长算法在内的3D有限单元技术作渐进失效分析。计算得到的载荷-位移曲线,将最终失效强度与试验结果以及与现有模型结果进行比较,为复合材料层合板结构的裂纹萌生和损伤扩展行为研究提供深入的理解。更多还原

【Abstract】 Based on the CDM theory,an energy-based stiffness degradation method is proposed to predict the progressive failure properties of the Al-carbon fiber/epoxy composite laminates.For carbon fiber/epoxy composites,three failure modes:fiber breakage,matrix cracking and fiber/matrix interface failure are included in the present model.A 3D finite element technique including the multiframe restart analysis and the arc-length algorithm is developed to perform the progressive failure analysis.The calculated load-displacement curve and the final failure strength of structure are compared with those obtained from experiments and other existing models.This work provides a progressive understanding of the damage initiation and propagation behaviors of composite laminated structures above.更多还原