Assessing the riveting process and the quality of riveted lap joints in aerospace and other applications

AbstractOne 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.

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Study of the impact of riveting sequence, rivet pitch, and gap between sheets on the quality of riveted lap joints using finite element method

The International Journal of Advanced Manufacturing Technology ◽

10.1007/s00170-012-4504-6 ◽

2012 ◽

Vol 67 (1-4) ◽

pp. 545-562 ◽

Cited By ~ 26

Author(s):

Faisal Aman ◽

S. Hossein Cheraghi ◽

Krishna K. Krishnan ◽

Hamid Lankarani

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Lap Joints ◽

Riveted Lap Joints ◽

The Impact ◽

Element Method

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Slug rivet assembly modeling and effects of procedure parameters on the quality of riveted lap joints

Advances in Mechanical Engineering ◽

10.1177/1687814018798397 ◽

2018 ◽

Vol 10 (9) ◽

pp. 168781401879839 ◽

Cited By ~ 1

Author(s):

Changyi Lei ◽

Yunbo Bi ◽

Jiangxiong Li ◽

Yinglin Ke

Keyword(s):

Process Parameters ◽

Lap Joints ◽

Thickness Direction ◽

Interference Fit ◽

Riveted Lap Joints ◽

The Impact ◽

Slug Rivet ◽

Related Process ◽

Hole Structure

Slug rivet interference-fit riveting is one of the advanced connection technologies which has been widely applied in aerospace manufacture. This article presents an appropriate numerical model simulating the slug rivet upset process with countersunk hole structure. Many previous studies have focused on the riveted lap joints without countersunk hole structure and ignored its related process parameters. The main difference is that the hole expansion would be inhomogeneous through the thickness direction due to the impact of countersunk hole. To improve the riveting quality and reduce the inhomogeneity scale of the interference distribution, the effects of two procedure parameters have been assessed. The analysis results significantly improve knowledge about the slug rivet installation process as well as the effects of the corresponding process parameters. The study will pave the way for further investigations.

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