在I型模式下异型截面Z-pin增强效果的数值分析

摘要/Abstract

摘要： 摘要：针对单根Z-pin拔出试验以及未增强/Z-pin增强的双悬臂梁（DCB）试验建立了三维有限元仿真模型.在拔出试验的模拟过程中，以静-动摩擦系数模拟Z-pin在基体中的脱胶拔出过程，以计算所得桥联力作为输入参数，通过连接器模拟Z-pin在层合板中的桥联作用，得到了DCB试验的载荷-位移曲线.同时，将所建模型用于计算异型截面Z-pin的桥联力，以及异型截面Z-pin增强DCB试件的载荷，以定量分析Z-pin截面周长对其增强效果的影响.结果表明，所建立的有限元模型的模拟结果与实验值较吻合.

关键词: 异型截面Z-pin, 桥联力, 双悬臂梁试验, 摩擦系数, 连接器

Abstract: Numerical Analysis of Reinforcement Effect of ZPins with Abstract： A 3D finite element model was proposed to simulate a single Zpin for pullout test and for unpinned/Zpinned double cantilever beam (DCB) test. Static and sliding friction coefficients were used to simulate the debonding and pullout process of the Zpin. Connectors were used in the DCB model to simulate the bridging effect of the Zpins with the bridging curves calculated by the pullout model as input data. The bridging curves of the Z-pin with specialshaped crosssection for the pullout test and the loaddisplacement curves for the DCB test were calculated based on the proposed finite element model. The effect of the cross section perimeter of Zpin on the maximum bridging load was also discussed in detail. The simulation results were in good agreement with the experimental data.

Key words: Z-pin with special-shaped crosssection, bridging force, double cantilever beam (DCB) test, friction coefficient, connector

中图分类号:

TB 303.3

金竹雨，张晓晶. 在I型模式下异型截面Z-pin增强效果的数值分析[J]. 上海交通大学学报（自然版）, 2016, 50(02): 169-175.

JIN Zhuyu,ZHANG Xiaojing. Numerical Analysis of Reinforcement Effect of Z-Pins withSpecial-Shaped CrossSection Under Mode I Delamination[J]. Journal of Shanghai Jiaotong University, 2016, 50(02): 169-175.

参考文献

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