Aerostructural Assembly Deformation Prediction Considering Drilling-Induced Stresses
Publication: Journal of Aerospace Engineering
Volume 28, Issue 6
Abstract
Drilling is a material removal process that introduces the plastic deformation and stresses around the hole. When large amounts of drilling stresses are added up, there will be deformation in the aerostructural assembly. This paper presents an aerostructural assembly deformation predicting method considering drilling-induced stresses around the riveting hole. Drilling-induced stresses are simulated with additional temperature fields. The assembly of the two riveted plates are considered to illustrate effects of drilling-induced stresses coupling and validate the proposed model. The simulation and experimental results show that one hole’s drilling-induced stresses have negligible impact on the riveting deformation, while a lot of holes’ drilling-induced stresses must be considered in assembling. When a lot of drilling-induced stresses are added up, there will be significant deformation in the aircraft’s structure. The deformation predicting method outlined in this paper will enhance the understanding of the compliant components deformation resulting from the drilling stresses and help systematically improve the precision control efficiency in the civil aircraft industry.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (Grant Nos. 51275308 and 50821003), the National Basic Research Program of China (Grant No. 2010CB731703), and the Fund of National Engineering and Research Center for Commercial Aircraft Manufacturing of China (Project No. SAMC13-JS-15-025).
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Published In
Journal of Aerospace Engineering
Volume 28 • Issue 6 • November 2015
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Oct 20, 2014
Accepted: Jan 12, 2015
Published online: Mar 10, 2015
Discussion open until: Aug 10, 2015
Published in print: Nov 1, 2015
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