Simulation Analysis of Cracked Steel Plate Bonded with Composite Patches

2019 International Conference on Advances in Construction Machinery and Vehicle Engineering (ICACMVE) Pub Date : 2019-05-01 DOI:10.1109/ICACMVE.2019.00057

H. Mo, Feng Hao, Yin Chen-bo, Xu Mingyang

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引用次数: 1

Abstract

During the service, cracks may occur in the steel structures of the crane. The capacity and service life of the cracked structures can be improved by bonding composite patches to the cracked areas. In order to better formulate the adhesive repairing scheme of cracked structures, the finite element models of the cracked steel plates bonded with composite patches were established with ABAQUS. The effects of patch length, stiffness, steel plate thickness and adhesive layer shear stiffness on the stress intensity factor (SIF) at the crack tip and the adhesive layer stress of the repaired structure were analyzed. The results show that selecting reasonable patch parameters and adhesive layer shear stiffness can not only effectively reduce the stress intensity factor (SIF) at the crack tip, but also improve the stress state of the adhesive layer. The bonding technique has a poor repairing effect on cracked steel plates with a large thickness. The conclusions can provide references for the development of repairing scheme for cracked steel structures.

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裂纹钢板与复合贴片粘结的仿真分析

在使用过程中，起重机的钢结构可能会出现裂缝。通过在裂纹处粘贴复合材料贴片，可以提高裂纹结构的承载力和使用寿命。为了更好地制定裂纹结构的粘接修复方案，利用ABAQUS软件建立了裂纹钢板粘接复合材料贴片的有限元模型。分析了补片长度、刚度、钢板厚度和粘接层剪切刚度对裂纹尖端应力强度因子(SIF)和修复结构粘接层应力的影响。结果表明，选择合理的贴片参数和粘接层剪切刚度不仅可以有效降低裂纹尖端的应力强度因子(SIF)，还可以改善粘接层的应力状态。粘接技术对大厚度裂纹钢板的修复效果较差。所得结论可为裂纹钢结构修复方案的制定提供参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2019 International Conference on Advances in Construction Machinery and Vehicle Engineering (ICACMVE)

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