Finite Element Analysis Of Thread Stripping Of A Threaded Assembly
Author(s)
M. Martínez-Martínez, A. Ferrand & J. Guillot
Abstract
Finite element analysis of thread stripping of a
threaded assembly
M. Martinez-Martinez, A. Ferrand & J. Guillot
Laboratoire de Genie Mecanique de Toulouse
INS AT, France.
Abstract
In this paper, we study the nut thread stripping of a loaded threaded assembly by
using finite element modeling and a criterion of damage. The aim is to envisage
the appearance of the macroscopic fissure which characterizes the beginning of
stripping. We compare that result with those obtained by tests and other
formulations existing in the literature.
We carried out tests of stripping of threads. The threaded assembly is
composed of an Ml 0 bolt and a round nut of which we will vary the height. The
materials used are steel class 12.9 for the bolt, copper and the AU4G for the nuts.
In this work, we considered that the material presents an irreversible damage
just before the macroscopic fissure occurs. We used the expression suggested by
LEMAITRE and CHABOCHE in their theory of the damage in mechanics of
Keywords
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