双面贴补层合板压缩屈曲渐进损伤分析

doi:10.7527/S1000-6893.2016.0046

固体力学与飞行器总体设计

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双面贴补层合板压缩屈曲渐进损伤分析

邓健¹, 周光明¹, 尹乔之¹, 相超², 蔡登安¹

1. 南京航空航天大学机械结构力学及控制国家重点实验室, 南京 210016;
2. 中航工业南京机电液压工程研究中心航空机电系统综合航空科技重点实验室, 南京 210000

收稿日期:2015-04-09 修回日期:2016-02-18 出版日期:2016-05-15 发布日期:2016-02-24
通讯作者: 周光明,Tel.:025-84892564 E-mail:zhougm@nuaa.edu.cn E-mail:zhougm@nuaa.edu.cn
作者简介:邓健,男,博士研究生。主要研究方向:复合材料结构设计及制造中的力学问题。Tel:025-84896353 E-mail:dengjian@nuaa.edu.cn;周光明,男,博士,教授,博士生导师。主要研究方向:先进复合材料结构设计、分析与验证技术。Tel:025-84892564 E-mail:zhougm@nuaa.edu.cn;尹乔之,女,博士研究生。主要研究方向:飞机结构强度及控制系统。Tel:025-84891024 E-mail:yinqiaozhi@nuaa.edu.cn;相超,男,硕士,工程师。主要研究方向:复合材料结构设计。 E-mail:xiangchao@nuaa.edu.cn;蔡登安,男,博士研究生。主要研究方向:复合材料结构设计及制造中的力学问题。 E-mail:cda@nuaa.edu.cn
基金资助:
江苏省普通高校研究生科研创新计划项目(KYLX15_0240,KYLX_0297);中央高校基本科研业务费专项资金;江苏省高校优势学科建设工程资助项目;江苏省科技项目产学研联合创新基金(BY2014003-10);南京市科技计划项目(201306010);机械结构力学及控制国家重点实验室(南京航空航天大学)自主研究课题(0214G02)

Progressive damage analysis of double-strap bonding repaired laminates under buckling compression

DENG Jian¹, ZHOU Guangming¹, YIN Qiaozhi¹, XIANG Chao², CAI Deng'an¹

1. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2. Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration, AVIC Nanjing Electrical and Hydraulic Engineering Research Center, Nanjing 210000, China

Received:2015-04-09 Revised:2016-02-18 Online:2016-05-15 Published:2016-02-24
Supported by:
Funding of Jiangsu Innovation Program for Graduate Education (KYLX15_0240, KYLX_0297);the Fundamental Research Funds for the Central Universities;Priority Academic Program Development of Jiangsu Higher Education Institutions;Innovation Fund of Jiangsu Province on Industry-Academy-Research Cooperation (BY2014003-10);Nanjing Science and Technology Project (201306010);the Research Fund of State Key Laboratory of Mechanics and Control of Mechanical Structures (Nanjing University of Aeronautics and Astronautics) (0214G02)

摘要/Abstract

摘要：

贴补复合材料层合板在压缩载荷作用下的屈曲破坏强度及其损伤演化过程对于复合材料结构修理具有重要意义。本文基于应变和黏聚区模型(CZM)建立了贴补复合材料层合板的渐进损伤分析模型,引入复合材料与胶层的损伤判据和刚度退化方案,计算了结构屈曲强度。数值仿真结果和实验数据吻合较好,验证了模型的有效性。基于该模型,采用非线性有限元方法研究了压缩载荷下双面贴补复合材料层合板的屈曲损伤演化过程,并讨论了补片参数对结构屈曲强度的影响。研究结果表明:双面贴补复合材料层合板屈曲后,处于拉伸和压缩状态下的铺层中的损伤程度存在差异;增大补片直径与厚度可以在一定程度上提高双面贴补复合材料层合板的屈曲强度。

关键词: 复合材料层合板, 双面贴补修理, 屈曲强度, 渐进损伤, 补片参数

Abstract:

Failure strength and damage evolution process of double-strap bonding repaired composite laminates under buckling compression are of great significance for composite structures repair. A progressive damage model based on strain as well as cohesive zone model (CZM) is developed for bonding repaired composite laminates. Failure criteria coupled with stiffness degradation schemes of composites and adhesive is used for damage initiation and propagation in order to predict the buckling failure strength. The numerical results show the consistency between the numerical results and experimental ones, which indicates that the proposed damage model is validated. Based on this model, the damage evolution process of repaired structures under buckling compression is studied using nonlinear finite element method. The influences of patch parameters on buckling strength are also discussed. The results indicate that damage status during loading on the tensile layers of laminates is different from that on the compressive layers; buckling strength of double-strap bonding repaired composite laminates can be improved with increasing patch diameter and thickness.

Key words: composite laminates, double-strap bonding repair, buckling strength, progressive damage, patch parameter

中图分类号:

V258
TB332

邓健, 周光明, 尹乔之, 相超, 蔡登安. 双面贴补层合板压缩屈曲渐进损伤分析[J]. 航空学报, 2016, 37(5): 1526-1535.

DENG Jian, ZHOU Guangming, YIN Qiaozhi, XIANG Chao, CAI Deng'an. Progressive damage analysis of double-strap bonding repaired laminates under buckling compression[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016, 37(5): 1526-1535.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

双面贴补层合板压缩屈曲渐进损伤分析

Progressive damage analysis of double-strap bonding repaired laminates under buckling compression

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