Characterization of a strongly nonlinear laboratory benchmark system

D. Michael McFarland; Alexander F. Vakakis; Lawrence A. Bergman; Timothy J. Copeland

doi:10.1007/978-1-4419-9831-6_1

Characterization of a strongly nonlinear laboratory benchmark system

D. Michael McFarland, Alexander F. Vakakis, Lawrence A. Bergman, Timothy J. Copeland

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A two-degree-of-freedom test structure originally developed to exhibit essentially nonlinear (nonlinearizable) stiffness in one of its connections has been modified to display a variable linear term in parallel with the existing nonlinear spring. This structure will be used in generating data for input to new algorithms for nonlinear system identification. In this paper, we report results from experiments in controlling the linear term introduced by applying an initial tension (preload) to the nonlinear spring, including the estimation of the parameters of a nonlinear force-displacement relation. It is shown that a sufficiently large initial tension results in predominantly linear behavior, meaning the same test setup can be used to produce dynamic behavior ranging from nearly linear to essentially nonlinear.

Original language	English (US)
Title of host publication	Dynamics of Civil Structures - Proceedings of the 28th IMAC, A Conference on Structural Dynamics, 2010
Publisher	Springer
Pages	1-6
Number of pages	6
ISBN (Print)	9781441998309
DOIs	https://doi.org/10.1007/978-1-4419-9831-6_1
State	Published - 2011

Publication series

Name	Conference Proceedings of the Society for Experimental Mechanics Series
Volume	4
ISSN (Print)	2191-5644
ISSN (Electronic)	2191-5652

ASJC Scopus subject areas

Engineering(all)
Computational Mechanics
Mechanical Engineering

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10.1007/978-1-4419-9831-6_1

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McFarland, D. M., Vakakis, A. F., Bergman, L. A., & Copeland, T. J. (2011). Characterization of a strongly nonlinear laboratory benchmark system. In Dynamics of Civil Structures - Proceedings of the 28th IMAC, A Conference on Structural Dynamics, 2010 (pp. 1-6). (Conference Proceedings of the Society for Experimental Mechanics Series; Vol. 4). Springer. https://doi.org/10.1007/978-1-4419-9831-6_1

Characterization of a strongly nonlinear laboratory benchmark system. / McFarland, D. Michael; Vakakis, Alexander F.; Bergman, Lawrence A. et al.

Dynamics of Civil Structures - Proceedings of the 28th IMAC, A Conference on Structural Dynamics, 2010. Springer, 2011. p. 1-6 (Conference Proceedings of the Society for Experimental Mechanics Series; Vol. 4).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

McFarland, DM, Vakakis, AF, Bergman, LA & Copeland, TJ 2011, Characterization of a strongly nonlinear laboratory benchmark system. in Dynamics of Civil Structures - Proceedings of the 28th IMAC, A Conference on Structural Dynamics, 2010. Conference Proceedings of the Society for Experimental Mechanics Series, vol. 4, Springer, pp. 1-6. https://doi.org/10.1007/978-1-4419-9831-6_1

McFarland DM, Vakakis AF, Bergman LA, Copeland TJ. Characterization of a strongly nonlinear laboratory benchmark system. In Dynamics of Civil Structures - Proceedings of the 28th IMAC, A Conference on Structural Dynamics, 2010. Springer. 2011. p. 1-6. (Conference Proceedings of the Society for Experimental Mechanics Series). https://doi.org/10.1007/978-1-4419-9831-6_1

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Characterization of a strongly nonlinear laboratory benchmark system

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