Abstract

This paper discusses the dynamic characteristics of plastic plates with bolted joints. The effects of tightening torque on the modal properties of the plates are investigated. Experimental and numerical modal analyses have been conducted on the plates made of acrylonitrile butadiene styrene (ABS), that are clamped by bolted joints. First, the effect of tightening torque on the vibration mode of the plates is investigated by experimental modal analyses. Modal testing has been conducted for various tightening torque values, and the relationships between the modal parameters and the tightening torques are discussed. Second, the effects of tightening torque on the vibration mode are studied by using analytical models for the bolted joints based on the finite element method (FEM). Based on the comparisons between the experimental and the numerical results, a modeling strategy for the boundary conditions between the plates is introduced and its validity is discussed. From both experimental and numerical studies, it is shown that the natural frequencies of the structures with bolted joints tend to converge to specific values as tightening torque increases. Moreover, it is also shown that when modeling the bolted plates by FEM, the inter-plate motion should be constrained by a boundary condition to properly suppress the out-of-phase motion of the plates.

References

References
1.
Avitabile
,
P.
,
2007
, “
MODAL SPACE: Bolted Joints are Common in Structures. Can the Frequency Change Significantly Due to Joints?
,”
Exp. Techniques
,
31
(
6
), pp.
25
26
. 10.1111/j.1747-1567.2007.00278.x
2.
Bograd
,
S.
,
Reuss
,
P.
,
Schmidt
,
A.
,
Gaul
,
L.
, and
Mayer
,
M.
,
2011
, “
Modeling the Dynamics of Mechanical Joints
,”
Mech. Syst. Signal Process.
,
25
(
8
), pp.
2801
2826
. 10.1016/j.ymssp.2011.01.010
3.
Ouyang
,
H.
,
Oldfield
,
M.
, and
Mottershead
,
J.
,
2006
, “
Experimental and Theoretical Studies of a Bolted Joint Excited by a Torsional Dynamic Load
,”
Int. J. Mech. Sci.
,
48
(
12
), pp.
1447
1455
. 10.1016/j.ijmecsci.2006.07.015
4.
Stallings
,
J.
, and
Hwang
,
D.
,
1992
, “
Modeling Pretensions in Bolted Connections
,”
Comput. Struct.
,
45
(
4
), pp.
801
803
. 10.1016/0045-7949(92)90499-P
5.
Lee
,
S.-Y.
,
Ko
,
K.-H.
, and
Lee
,
J. M.
,
2000
, “
Analysis of Dynamic Characteristics of Structural Joints Using Stiffness Influence Coefficients
,”
KSME Int. J.
,
14
(
12
), pp.
1319
1327
. 10.1007/BF03191916
6.
Tol
,
Ş.
, and
Özgüven
,
H. N.
,
2015
, “
Dynamic Characterization of Bolted Joints Using FRF Decoupling and Optimization
,”
Mech. Syst. Signal Process.
,
54–55
, pp.
124
138
. 10.1016/j.ymssp.2014.08.005
7.
Wang
,
Z.
,
Fei
,
C.-W.
, and
Wang
,
J.-J.
,
2017
, “
Equivalent Simulation of Mechanical Characteristics for Parametric Modeling of Bolted Joint Structures
,”
Adv. Mech. Eng.
,
9
(
6
), pp.
1
12
. 10.1177/1687814017704360
8.
Zhang
,
Y.-X.
,
Zhu
,
D.-C.
,
Zhang
,
S.
, and
Qian
,
Y.-P.
,
2017
, “
Research on Vibration Transfer Characteristics of the Bolt Connection Structure
,”
J. Failure Anal. Prevention
,
17
(
1
), pp.
68
78
. 10.1007/s11668-016-0206-y
9.
Zaman
,
I.
,
Khalid
,
A.
,
Manshoor
,
B.
,
Araby
,
S.
, and
Ghazali
,
M. I.
,
2013
, “
The Effects of Bolted Joints on Dynamic Response of Structures
,”
IOP Conf. Series: Materials Science and Engineering
,
50
(
1
), p.
012018
. 10.1088/1757-899X/50/1/012018
10.
Langer
,
P.
,
Sepahvand
,
K.
,
Guist
,
C.
, and
Marburg
,
S.
,
2017
, “
Finite Element Modeling for Structural Dynamic Analysis of Bolted Joints Under Uncertainty
,”
Procedia Eng.
,
199
, pp.
954
959
. 10.1016/j.proeng.2017.09.199
11.
der Auweraer
,
Van
,
Guillaume
,
H.
,
Verboven
,
P.
, and
Vanlanduit
,
S.
,
2001
, “
Application of a Fast-stabilizing Frequency Domain Parameter Estimation Method
,”
ASME J. Dyn. Syst. Measure. Control
,
123
(
4
), pp.
651
658
. 10.1115/1.1410369
12.
Cauberghe
,
B.
,
2004
, “
Applied Frequency-Domain System Identification in the Field of Experimental and Operational Modal Analysis
,” Ph.D. thesis,
Vrije Universiteit Brussel
,
Brussels, Belgium
.
You do not currently have access to this content.