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浙江大学学报(工学版)
浙江大学学报(工学版)  2018, Vol. 52 Issue (5): 819-827    DOI: 10.3785/j.issn.1008-973X.2018.05.001
土木与交通工程     
层间黏结性能对夹层管屈曲传播的影响机理
龚顺风, 王喜鹏, 李根, 刘承斌
浙江大学 结构工程研究所, 浙江 杭州 310058
Influencing mechanisms of inter-layer adhesion behavior on buckle propagation of sandwich pipes
GONG Shun-feng, WANG Xi-peng, LI Gen, LIU Cheng-bin
Institute of Structural Engineering, Zhejiang University, Hangzhou 310058, China
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摘要：

为了研究层间黏结性能对夹层管屈曲传播的影响，通过深海压力舱小比例模型试验，测得不同层间黏接情况下夹层管试件的变形形态和压力-体积变化曲线.利用有限元软件ABAQUS，建立外压作用下夹层管的三维数值模型，采用非线性弹簧单元模拟轴向和环向层间黏结性能，数值模拟分析夹层管试件的局部屈曲失稳和屈曲传播过程，得到试件的变形形态和压力-体积变化曲线，与试验结果吻合较好.采用建立的数值模拟方法，分析不同层间黏接情况下夹层管的屈曲传播过程.结果表明：良好的层间黏结性能可以使夹层管各层间有效传力和协调变形，显著提升结构的整体受力性能，提高夹层管的屈曲传播压力，具有更好的承压和变形能力.
Abstract:

The small-scale model experiments for sandwich pipe test specimens under different inter-layer adhesion conditions were performed in a deep-sea hyperbaric chamber to measure the deformation configurations and the pressure-change in volume response curves, in order to investigate the influence of inter-layer adhesion behavior on the buckle propagation of sandwich pipes.A three-dimensional numerical model of sandwich pipes under the external pressure was established using the finite element software ABAQUS.The nonlinear spring element was used to model the axial and circumferential inter-layer adhesion behavior. Then the local buckle instability and the buckle propagation process of sandwich pipe test specimens were simulated to obtain the deformation configuration and the pressure-change in volume response curve. The numerical results accorded well with the experimental results. Subsequently, the buckle propagation process of sandwich pipes under different inter-layer adhesion conditions was analyzed using the developed numerical simulation method. Results show that good inter-layer adhesion behavior can effectively transfer the force and coordinate the deformation between layers, significantly improve the overall mechanical performance of the structures, enhance the buckle propagation pressure of sandwich pipes, and render it to have better pressure bearing and deformation capacity.
收稿日期: 2017-04-13 出版日期: 2018-11-07
CLC:  TE973.1  
基金资助:

国家自然科学基金资助项目（51479176，51009122）.
作者简介: 龚顺风(1975-),男,教授,从事深水海底管道等研究.orcid.org/0000-0002-4184-9639.E-mail:sfgong@zju.edu.cn
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引用本文:

龚顺风, 王喜鹏, 李根, 刘承斌. 层间黏结性能对夹层管屈曲传播的影响机理[J]. 浙江大学学报(工学版), 2018, 52(5): 819-827.

GONG Shun-feng, WANG Xi-peng, LI Gen, LIU Cheng-bin. Influencing mechanisms of inter-layer adhesion behavior on buckle propagation of sandwich pipes. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2018, 52(5): 819-827.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2018.05.001    或    http://www.zjujournals.com/eng/CN/Y2018/V52/I5/819

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[1] 党学博, 龚顺风, 金伟良, 李志刚, 赵冬岩, 何宁. 深水海底管道极限承载能力分析[J]. J4, 2010, 44(4): 778-782.