0
Research Papers

3D Finite Element Modeling of an Assembly Process With Thread Forming Screw

[+] Author and Article Information
Florestan Mathurin

Laboratoire de Génie Mécanique de Toulouse, Institut Clément Ader, Université de Toulouse, 135 Avenue de Rangueil, 31077 Toulouse Cedex 04, Franceflorestan.mathurin@insa-toulouse.fr

Jean Guillot

Laboratoire de Génie Mécanique de Toulouse, Institut Clément Ader, Université de Toulouse, 135 Avenue de Rangueil, 31077 Toulouse Cedex 04, Francejean.guillot@insa-toulouse.fr

Pierre Stéphan

Laboratoire de Génie Mécanique de Toulouse, Institut Clément Ader, Université de Toulouse, 135 Avenue de Rangueil, 31077 Toulouse Cedex 04, Francepierre.stephan@toulouse.iufm.fr

Alain Daidié

Laboratoire de Génie Mécanique de Toulouse, Institut Clément Ader, Université de Toulouse, 135 Avenue de Rangueil, 31077 Toulouse Cedex 04, Francealain.daidie@insa-toulouse.fr

J. Manuf. Sci. Eng 131(4), 041015 (Jul 15, 2009) (8 pages) doi:10.1115/1.3160377 History: Received February 14, 2007; Revised October 21, 2008; Published July 15, 2009

This paper presents a 3D finite element (FE) model of a thread forming screw assembly process based on the ABAQUS 6.5.4 Explicit software program. The model consists of two principal elements: an M10×12 thread forming screw and a lower 4 mm plate into which the screw taps its threads. The aim was to develop a robust industrial dimensioning tool; the model can be extended to establish the preload and investigate other types of assemblies. A 45 deg sector, which represents 1/8 of the joint, was modeled to maintain a good compromise between calculation time and an accurate representation of the thread forming process. The intent of the study was to analyze the material flow throughout the thread forming process; a parametrical study was also conducted to identify the most influential process parameters. To validate the model, FE numerical simulation results are compared with published experimental results. The study shows that the lead hole diameter has an important influence on the screwing torque.

FIGURES IN THIS ARTICLE
<>
Copyright © 2009 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 9

Ratios of hourglass energy/internal energy and kinetic energy/internal energy relative to model 1.1

Grahic Jump Location
Figure 10

Torque time curve relative to model 2.3

Grahic Jump Location
Figure 4

Boundary conditions imposed on plate 1

Grahic Jump Location
Figure 5

Qualitative comparison between experimental (9) and numerical FE study

Grahic Jump Location
Figure 1

Geometry of ISO thread forming screws

Grahic Jump Location
Figure 2

Geometrical parameters used in the modeling

Grahic Jump Location
Figure 3

Assembly and plate 1 meshing

Grahic Jump Location
Figure 6

Hole diameter before and after thread forming

Grahic Jump Location
Figure 7

Comparison of the radial displacement of material during the thread forming process between the experimental study (9) and FE simulations

Grahic Jump Location
Figure 8

Model 1.1 energy balance

Grahic Jump Location
Figure 11

Transition between the curves of the tightening torque relative to 45 deg sector to the curve and relative to the complete plate

Grahic Jump Location
Figure 12

Influence of the hole diameter on the tightening torque and the final thread shape

Grahic Jump Location
Figure 13

Influence of the rotation speed of the screw on the tightening torque, the final thread shape, and the CPU time

Grahic Jump Location
Figure 14

Ratio of hourglass energy/internal energy

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In