In this paper, the evolution equations of the bearing and thread friction coefficients are proposed based on mechanical behavior of the bolted joint assembly. The study shows excellent correlation between the proposed model and the experimental results for the breakaway torque values in both the tightening and loosening directions. Evaluation of the torque-angle control of the tightening process is made, and a modified torque-angle control approach is proposed. The effect of friction coefficients on the error in the clamping force prediction is analyzed.

1.
Bickford
,
J. H.
, and
Nassar
,
A. S.
, 1998,
Handbook of Bolts and Bolted Joints
,
Dekker
,
New York
.
2.
Shigley
,
J. E.
, and
Mischke
,
C. R.
, 1989,
Mechanical Engineering Design
,
5th ed.
,
McGraw-Hill
,
New York
, Chap. 8.
3.
Fukuoka
,
T.
, 1992, “
Finite Element Simulation of Tightening Process of Bolted Joint With Tension
,”
ASME J. Pressure Vessel Technol.
0094-9930,
114
, pp.
433
438
.
4.
Nassar
,
S. A.
,
El-Khiamy
,
H.
,
Barber
,
G. C.
,
Zou
,
Q.
, and
Sun
,
T. S.
, 2005, “
Bearing and Thread Friction in Fasteners
,”
ASME J. Tribol.
0742-4787,
127
, pp.
263
272
.
5.
Nassar
,
S. A.
, and
Yang
,
X. J.
, 2007, “
Novel Formulation for the Tightening and Break-Away Torque Components in Threaded Fasteners
,”
ASME J. Pressure Vessel Technol.
0094-9930,
129
, pp.
653
663
.
6.
Shoberg
,
R. S.
, 1998, “
Torque-Angle Tension Control
,” In
Handbook of Bolts and Bolted Joints
,
J. H.
Bickford
and
S.
Nassar
, eds.,
Marcel Dekker
,
New York
, pp.
603
620
.
7.
Shoberg
,
R. S.
, 1996, “
Torque-Angle Signature Analysis
,” Fastener Technology International Magazine.
8.
Shoberg
,
R. S.
, 1998, “
Torque-Tension Audits
,” in
Handbook of Bolts and Bolted Joints
,
J. H.
Bickford
and
S.
Nassar
, eds.,
Marcel Dekker
,
New York
, pp.
881
894
.
9.
Nassar
,
S. A.
,
Sun
,
T.
, and
Zou
,
Q.
, 2006, “
The Effect of Coating and Tightening Speed on the Torque-Tension Relationship in Threaded Fasteners
,”
Proceedings of the 2006 SAE World Congress: Experiments in Automotive Engineering-Experimental Test
,
Detroit, MI
, Apr. 3–6, Paper No. SP-2033, pp.
205
220
.
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