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Deformation Prediction of Aero-Structural Assembly Involving Drilling-Induced Stresses

[+] Author Affiliations
Hua Wang, Qing Ge

Shanghai Jiao Tong University, Shanghai, China

Paper No. IMECE2014-36948, pp. V02AT02A042; 7 pages
doi:10.1115/IMECE2014-36948
From:
  • ASME 2014 International Mechanical Engineering Congress and Exposition
  • Volume 2A: Advanced Manufacturing
  • Montreal, Quebec, Canada, November 14–20, 2014
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4643-8
  • Copyright © 2014 by ASME

abstract

Drilling is a material removal process which introduces the plastic deformation and stresses around the hole. When large amounts of drilling stresses are added up, there will be deformation in the aero-structural assembly. This work presents a deformation predicting method based on finite element analysis considering drilling stresses. A riveting equivalent unit is employed to simulate the riveting process in order to obtain a balance between accuracy and the computational efficiency in finite element analyzing. Drilling stresses are added up into the riveting process with additional temperature fields in ABAQUS. The assembly of the two riveted plates and the trailing edge were considered to illustrate effects of drilling stresses coupling. The simulation results had shown that drilling stresses had little influence on one riveting deformation. When so many drilling stresses and riveting effects were added up, there will be striking deformation in the aircraft’s structure. The deformation predicting method outlined in this work will enhance the understanding of the compliant components deformation resulting from the drilling stresses, and help systematically improving the precision control efficiency in civil aircraft industry.

Copyright © 2014 by ASME

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