Reinforcement of Fatigue Damaged Steel Structures Using CFRP Lamellas Part 3: Numerical Simulation

被引：0

作者：

Dong, J. ^{[1
]}

Li, Z. ^{[2
]}

Pasternak, H. ^{[2
]}

Ciupack, Y. ^{[2
]}

机构：

[1] Hefei Univ, Sch Urban Construct & Transportat, 99 Jinxiudadao, Hefei 230601, Peoples R China

[2] Brandenburg Tech Univ BTU, Konrad Wachsmann Allee 2, D-03046 Cottbus, Germany

来源：

BAUINGENIEUR | 2020年 / 95卷 / 10期

关键词：

CRACK-GROWTH; CONSTRUCTION; BEHAVIOR; DESIGN;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In two previous papers, CFRP reinforcements of fatigue damaged steel components were examined. For this purpose; CFRP lamellas glued on, either limp or pre-tensioned, were tested.The result of the reinforcement is an increased remaining service life. In order to understand the tests, numerical simulations with Abaqus based on XFEM were carried out in this paper.The simulations show (like the previous tests), in comparison with the unreinforced reference samples, a significant reduction in the stress on the crack tips through the application of CFRP lamellas.This shows the significantly longer remaining service life. In addition, the parameter studies show that the remaining fatigue life is obviously influenced by the prestress, the stress range of cyclic loading, the initial crack length and the CFRP width.

引用

页码：362 / 368

页数：7

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