| CFRP加固损伤钢板的拉伸及疲劳性能研究 |
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| 引用本文： | 张彤彤,吴健,李泓运,王纬波.CFRP加固损伤钢板的拉伸及疲劳性能研究[J].船舶力学,2017,21(10). |
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| 作者姓名： | 张彤彤 吴健 李泓运 王纬波 |
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| 作者单位： | 中国船舶科学研究中心 船舶振动噪声重点实验室,江苏 无锡,214082;中国船舶科学研究中心 船舶振动噪声重点实验室,江苏 无锡,214082;中国船舶科学研究中心 船舶振动噪声重点实验室,江苏 无锡,214082;中国船舶科学研究中心 船舶振动噪声重点实验室,江苏 无锡,214082 |
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| 基金项目： | 工业和信息化部高技术船舶科研项目"岛礁中型浮式结构物关键技术研究·新型材料在南海浮式结构物设计中的应用技术研究"资助 |
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| 摘 要： | 文章基于Dugdale模型理论提出CFRP加固含裂纹钢板加固量的计算方法。通过虚拟裂纹闭合法建立模型来模拟塑性钢板的破坏过程,并完成相关试验,验证了CFRP加固含裂纹钢板有效粘贴长度、有效粘贴宽度取值的有效性。同时利用Paris公式预估疲劳寿命,并结合相关试验数据,探究了CFRP加固对含裂纹钢板疲劳寿命的提高作用。研究表明,有效粘贴长度、有效粘贴宽度的理论取值有效;通过CFRP双侧加固竖裂纹、斜裂纹钢板构件可分别使其疲劳寿命得到显著提高。
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| 关 键 词： | CFRP碳纤维复合材料 裂纹 断裂力学 拉伸强度 疲劳强度 |
Study on tension and fatigue property of cracked steel plates reinforced by CFRP plates |
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| ZHANG Tong-tong,WU Jian,LI Hong-yun,WANG Wei-bo.Study on tension and fatigue property of cracked steel plates reinforced by CFRP plates[J].Journal of Ship Mechanics,2017,21(10). |
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| Authors: | ZHANG Tong-tong WU Jian LI Hong-yun WANG Wei-bo |
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| Abstract: | Based on the Dugdale model of fracture mechanics, an approach considering composites rein-forcing cracked steel plate is given. The failure of steel plates under tension is simulated by virtual fracture closure method in Abaqus. The effective length and width of CFRP strip for reinforcing are both theoretical-ly and experimentally investigated. The fatigue life of steel plate with a crack is estimated by Paris formula and the effect of CFRP reinforcement is explored with experiments. The results show the existence of effec-tive length and width of CFRP reinforcement which can be referred in the CFRP reinforcing application. The fatigue life of steel plates reinforced by CFRP is obviously increased to an extent. |
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| Keywords: | CFRP (Carbon Fiber Reinforced Polymer) crack fracture mechanics tension fatigue |
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