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Analysis and design improvement of composite bolted π-joints under bending load

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Journal of the Brazilian Society of Mechanical Sciences and Engineering Aims and scope Submit manuscript

Abstract

A 3D progressive model with better convergence property is established to capture the mechanical properties and damage mechanism of a composite bolted π-joint under bending load and shown to closely match experimental results. This model is then used to investigate the effect of internal laminate stacking sequence and surface layers thickness on the bending performance of the joint. It was found that the stacking sequence and the surface layers thickness have a significant effect on the matrix crack and delamination distributions in the joint, respectively. Local surface layer thickness can be designed to control the delamination damage around the bolt hole. Finally, volume fraction of 0° layer in the internal laminate and surface layer thickness are used to improve the joint bending performances by proper design.

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Authors and Affiliations

  1. School of Aeronautic Science and Engineering, Beihang University, Beijing, 100191, China

    Xiaoyuan Du, Xiaoquan Cheng & Yujia Cheng

  2. AVIC China Helicopter Research and Development Institute, Jingdezhen, 333001, China

    Wenjun Huang

  3. The Second System Design Department of the Second Research Academy of CASIC, Beijing, 100854, China

    Gang Chen

Authors
  1. Xiaoyuan Du
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  2. Xiaoquan Cheng
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  3. Yujia Cheng
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  4. Wenjun Huang
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  5. Gang Chen
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Correspondence to Xiaoquan Cheng.

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Technical Editor: João Marciano Laredo dos Reis.

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Du, X., Cheng, X., Cheng, Y. et al. Analysis and design improvement of composite bolted π-joints under bending load. J Braz. Soc. Mech. Sci. Eng. 42, 384 (2020). https://doi.org/10.1007/s40430-020-02476-2

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  • DOI: https://doi.org/10.1007/s40430-020-02476-2

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