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http://dx.doi.org/10.12989/sem.2015.53.2.373

Structural joint modeling and identification: numerical and experimental investigation  

Ingole, Sanjay B. (Government Polytechnic)
Chatterjee, Animesh (Visvesvaraya National Institute of Technology)
Publication Information
Structural Engineering and Mechanics / v.53, no.2, 2015 , pp. 373-392 More about this Journal
Abstract
In the present work, structural joints have been modeled as a pair of translational and rotational springs and frequency equation of the overall system has been developed using sub-structure synthesis. It is shown that using first few natural frequencies of the system, one can obtain a set of over-determined system of equations involving the unknown stiffness parameters. Method of multi-linear regression is then applied to obtain the best estimate of the unknown stiffness parameters. The estimation procedure has been developed first for a two parameter joint model and then for a three parameter model, in which cross coupling terms are also included. Two cases of structural connections have been considered, first with a cantilever beam with support flexibility and then a pair of beams connected through lap joint. The validity of the proposed method is demonstrated through numerical simulation and by experimentation.
Keywords
vibration; sub-structure synthesis; joint stiffness identification; linear parameters; multi-linear regression; cantilever; single lap joint;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 Ahmadian, H. and Jalali, H. (2007), "Identification of bolted lap joints parameters in assembled structures", Mech. Syst. Signal Pr., 21, 1041-1050.   DOI
2 Ahmadian, H., Mottershed, J.E. and Friswell, M.I. (2001), "Boundary condition identification by solving characteristic equations", J. Sound Vib., 247 (5), 755-763.   DOI
3 Asgarian, B., Mokarram, V. and Alanjari, P. (2014), "Local joint flexibility equations for Y-T and K-type tubular joints", Ocean Syst. Eng., 4(2), 151-167.   DOI
4 Bishop, R.E.D. and Johnson, D.C. (1960), The Mechanics of Vibration, Cambridge University Press, New York.
5 Celic, D. and Boltezar, M. (2008), "Identification of the dynamic properties of joints using frequency response functions", J. Sound Vib., 317, 158-174.   DOI
6 Dominguez, N. and Perez-Mota, J. (2014), "Coupling of nonlinear models for steel-concrete interaction in structural RC joints", Coupl. Syst. Mech., 3(2), 195-211.   DOI
7 Draper, N.R. and Smith, H. (1998), Applied Regression Analysis, John Willey and Sons, Singapore.
8 Gilat, A. (2003), $MATLAB^{(R)}$ an introduction with applications, John Wiley & Sons (Asia) Pte.ltd., Singapore.
9 Hwang, H.Y. (1998), "Identification techniques of structure connection parameters using frequency response functions", J. Sound Vib., 213(3), 469-479.
10 Kim, H.B. and Park, Y.S. (1997), "Sensor placement guide for structural joint stiffness model improvement", Mech. Syst. Signal Pr., 11(5), 651-672.   DOI
11 Ma, X., Bergman, L. and Vakakis, A. (2001), "Identification of bolted joints through laser vibrometry", J. Sound Vib., 246(3), 441-460.   DOI
12 Modak, S.V., Kundra, T.K. and Nakra, B.C. (2002), "Prediction of dynamic characteristics using updated finite element models", J. Sound Vib., 254 (3), 447-467.   DOI
13 Mottershed, J.E., Friswell, M.I., Ng, G.H.T and Brandon, J.A. (1996), "Geometric parameters for finite element model updating of joints and constraints", Mech. Syst. Signal Pr., 10(2), 171-182.   DOI
14 Patricia, J.W.Y., Robert, H.W. and Berger, E.J. (1999), "Using rigid body dynamics to measure joint stiffness", Mech. Syst. Signal Pr., 13(5), 789-801.   DOI
15 Ratcliffe, M.J. and Lieven, N.A.J. (2000), "A generic element based method for joint identification", Mech. Syst. Signal Pr., 14(1), 3-28.   DOI
16 Sjovall, P. and Thomas, A. (2008), "Substructure system identification from coupled system test data", Mech. Syst. Signal Pr., 22, 15-33.   DOI
17 Tsai, J.S. and Chou, Y.F. (1988), "The identification of dynamics characteristics of a single bolt joint", J. Sound Vib., 125(3), 487-502.   DOI
18 Wang, M., Wang, D. and Zheng, G. (2012), "Joint dynamic properties identification with partially measured frequency response function", Mech. Syst. Signal Pr., 27, 499-512.   DOI
19 Wu, J.R. and Li, Q.S. (2006), "Structural parameter identification and damage detection for a steel structure using a two stage finite element model updating method", J. Construct. Steel Res., 62, 231-239.   DOI
20 Yang, K.T. and Park, Y.S. (1993), "Joint structural parameter identification using a subset of frequency response function measurements", Mech. Syst. Signal Pr., 7(6), 509-530.   DOI