<abstract xmlns="http://www.w3.org/1999/xhtml"><p>One crucial characteristic of the aircraft structure are fatigue properties and rivets are usually critical areas in metal airframes due to fatigue cracks nucleation. According to literature, the NACA riveting method offers a huge increase in fatigue life of riveted lap joints. This paper presents FE simulations of quasi-static riveting on a press for standard countersunk rivets and the NACA riveting in two configurations: with a normal brazier rivet and a brazier rivet with a compensator. The analyzed configurations have been compared based on the stress courses on the sheets faying surfaces after riveting process. Due to a lack of data, the rivet length and the squeezing force value were assumed for NACA riveting based on FE simulations. The results indicated beneficial influence of the NACA riveting in the outer sheet (with a countersunk) and disadvantageous influence in the inner sheet. This effect was stronger in the case of the rivet with a compensator.</p></abstract>

One crucial characteristic of the aircraft structure are fatigue properties and rivets are usually critical areas in metal airframes due to fatigue cracks nucleation. According to literature, the NACA riveting method offers a huge increase in fatigue life of riveted lap joints. This paper presents FE simulations of quasi-static riveting on a press for standard countersunk rivets and the NACA riveting in two configurations: with a normal brazier rivet and a brazier rivet with a compensator. The analyzed configurations have been compared based on the stress courses on the sheets faying surfaces after riveting process. Due to a lack of data, the rivet length and the squeezing force value were assumed for NACA riveting based on FE simulations. The results indicated beneficial influence of the NACA riveting in the outer sheet (with a countersunk) and disadvantageous influence in the inner sheet. This effect was stronger in the case of the rivet with a compensator.

Comparison of Residual Stress State on Sheets Faying Surface after Standard and NACA Riveting-Numerical Approach

Fatigue of Aircraft Structures

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

One crucial characteristic of the aircraft structure are fatigue properties and rivets are usually critical areas in metal airframes due to fatigue cracks...

Comparison of Residual Stress State on Sheets Faying Surface after Standard and NACA Riveting-Numerical Approach

Published Online: Jul 22, 2017

Page range: 116 - 126

DOI: https://doi.org/10.1515/fas-2016-0011

Keywords
NACA riveting, fatigue, FE, joints

© 2016 Wojciech Wronicz, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Comparison of Residual Stress State on Sheets Faying Surface after Standard and NACA Riveting-Numerical Approach

Published Online: Jul 22, 2017

Page range: 116 - 126

DOI: https://doi.org/10.1515/fas-2016-0011

KeywordsNACA riveting, fatigue, FE, joints

© 2016 Wojciech Wronicz, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
NACA riveting, fatigue, FE, joints