This paper addresses a new method for estimating axial load in tie-rods using indirect measurements. This information is of great importance for assessing the health of the tie-rod itself and the health of the entire structure that the beam is inserted into. The method is based on dynamic measurements and requires the experimental estimation of the tie-rod eigenfrequencies and mode shapes at a limited number of points. Furthermore, the approach requires the development of a simple finite element model (FEM), which is then cross-correlated with the experimental data using a model update procedure. Extensive numerical simulations and experimental tests have demonstrated the ability of the new approach to yield accurate estimates of the tie-rod axial load and overcome various limitations of the methods currently available in the literature.
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August 2017
Research-Article
Estimation of Axial Load in Tie-Rods Using Experimental and Operational Modal Analysis
S. Campagnari,
S. Campagnari
Department of Mechanical Engineering,
Politecnico di Milano,
Via La Masa, 34,
Milan 20156, Italy
Politecnico di Milano,
Via La Masa, 34,
Milan 20156, Italy
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F. di Matteo,
F. di Matteo
Department of Mechanical Engineering,
Politecnico di Milano,
Via La Masa, 34,
Milan 20156, Italy
Politecnico di Milano,
Via La Masa, 34,
Milan 20156, Italy
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S. Manzoni,
S. Manzoni
Department of Mechanical Engineering,
Politecnico di Milano,
Via La Masa, 34,
Milan 20156, Italy
e-mail: stefano.manzoni@polimi.it
Politecnico di Milano,
Via La Masa, 34,
Milan 20156, Italy
e-mail: stefano.manzoni@polimi.it
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M. Scaccabarozzi,
M. Scaccabarozzi
Department of Mechanical Engineering,
Politecnico di Milano,
Via La Masa, 34,
Milan 20156, Italy
Politecnico di Milano,
Via La Masa, 34,
Milan 20156, Italy
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M. Vanali
M. Vanali
Department of Engineering and Architecture,
Università degli Studi di Parma,
Parco Area delle Scienze, 181/A,
Parma 43124, Italy
Università degli Studi di Parma,
Parco Area delle Scienze, 181/A,
Parma 43124, Italy
Search for other works by this author on:
S. Campagnari
Department of Mechanical Engineering,
Politecnico di Milano,
Via La Masa, 34,
Milan 20156, Italy
Politecnico di Milano,
Via La Masa, 34,
Milan 20156, Italy
F. di Matteo
Department of Mechanical Engineering,
Politecnico di Milano,
Via La Masa, 34,
Milan 20156, Italy
Politecnico di Milano,
Via La Masa, 34,
Milan 20156, Italy
S. Manzoni
Department of Mechanical Engineering,
Politecnico di Milano,
Via La Masa, 34,
Milan 20156, Italy
e-mail: stefano.manzoni@polimi.it
Politecnico di Milano,
Via La Masa, 34,
Milan 20156, Italy
e-mail: stefano.manzoni@polimi.it
M. Scaccabarozzi
Department of Mechanical Engineering,
Politecnico di Milano,
Via La Masa, 34,
Milan 20156, Italy
Politecnico di Milano,
Via La Masa, 34,
Milan 20156, Italy
M. Vanali
Department of Engineering and Architecture,
Università degli Studi di Parma,
Parco Area delle Scienze, 181/A,
Parma 43124, Italy
Università degli Studi di Parma,
Parco Area delle Scienze, 181/A,
Parma 43124, Italy
1Corresponding author.
Manuscript received May 18, 2016; final manuscript received January 30, 2017; published online May 30, 2017. Assoc. Editor: Carole Mei.
J. Vib. Acoust. Aug 2017, 139(4): 041005 (15 pages)
Published Online: May 30, 2017
Article history
Received:
May 18, 2016
Revised:
January 30, 2017
Citation
Campagnari, S., di Matteo, F., Manzoni, S., Scaccabarozzi, M., and Vanali, M. (May 30, 2017). "Estimation of Axial Load in Tie-Rods Using Experimental and Operational Modal Analysis." ASME. J. Vib. Acoust. August 2017; 139(4): 041005. https://doi.org/10.1115/1.4036108
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