GFRP复合材料与砖界面粘结性能的数值模拟
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摘要
纤维复合材料(Fiber Reinforced Polymer,FRP)加固砌体结构剥离破坏是一种常见的破坏形式。对玻璃纤维复合材料(GFRP)和砖粘结界面进行数值模拟,用Solid65单元和Shell41单元分别模拟砖和GFRP,采用接触单元的方法,用"接触对"将砖实体单元和GFRP单元连接在一起,研究粘结界面的应力、应变分布特点和破坏过程。分析结果表明用有限元模拟分析粘结界面应力状态具有一定的可行性。
Bonding failure is a typical failure mode in FRP (Fiber Reinforced Plastic) strengthened masonry structures. In the paper, the bonding interface between GFRP and clay brick was simulated with ANSYS7.0 by using Solid65 and Shell41 to simulate clay brick and GFRP, respectively. The brick unit and GFRP unit were linked by “compact pairs”. The characteristic of stress and strain of bonding interface and bonding process were studied. It can be shown that it is feasible to simulate the bonding in interface by finite element method.
Bonding failure is a typical failure mode in FRP (Fiber Reinforced Plastic) strengthened masonry structures. In the paper, the bonding interface between GFRP and clay brick was simulated with ANSYS7.0 by using Solid65 and Shell41 to simulate clay brick and GFRP, respectively. The brick unit and GFRP unit were linked by “compact pairs”. The characteristic of stress and strain of bonding interface and bonding process were studied. It can be shown that it is feasible to simulate the bonding in interface by finite element method.
引文
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[5]Roberts T M.Approximate analysis of shear and normal stress concentrations in the adhesive Layer of plated RC Beams[J].Structural Engineer,1989,67(12):228~233.
[6]杨庆生.复合材料细观结构力学与设计[M].北京:中国铁道出版社,2000.116~127.Yang Qingsheng.Micro structural mechanics of composite materials and design[M].Beijing:China Railway Press,2000.116~127.(in Chinese)
[7]郑代华.杂交结构界面力学性能的理论研究与数值分析[D].北京:北方交通大学,2000.64~70.Zheng Daihua.Theory on mechanical performance in interface of hybrid structures and numerical analysis[D].Beijing:Northern Jiaotong University,2000.64~70.(in Chinese)
[8]彭细荣.杂交结构界面力学性能分析[D].北京:北方交通大学,2002.21~23.Peng Xirong.Mechanical performance in interface of hybrid structures[D].Beijing:Northern Jiaotong University,2002.21~23.(in Chinese)
[9]ANSYS Element Reference.Electronic Release[M].SAS IP,Inc,1998.
[10]ANSYS Theory Reference.Electronic Release[M].SAS IP,Inc,1998.
[11]博嘉科技.有限元分析软件ANSYS—融会与贯通[M].北京:中国水利水电出版社,2000.230~233.Bojia Science.ANSYS software of finite element analysis––harmonization and run-through[M].Beijing:China Conservancy and Hydropower Press,2000.230~233.(in Chinese)
[12]易日.使用ANSYS6.1进行结构力学分析[M].北京:北京大学出版社,2001.344~380.Yi Ri.Mechanical analysis of structures using ANSYS6.1[M].Beijing:Peking University Press,2001.344~380.(in Chinese)
[13]朱伯龙.砌体结构设计原理[M].上海:同济大学出版社,1991.13~14.Zhu Bolong.Design theory for masonry structures[M].Shanghai:Tongji University Press,1991.13~14.(in Chinese)
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