By Michael Laible, Kristin Fitzpatrick (auth.), Gaetan Kerschen, Douglas Adams, Alex Carrella (eds.)
Topics in Nonlinear Dynamics, quantity 1: lawsuits of the 31st IMAC, A convention and Exposition on Structural Dynamics, 2013, the first quantity of 7 from the convention, brings jointly contributions to this crucial quarter of analysis and engineering. the gathering offers early findings and case stories on primary and utilized points of Structural Dynamics, together with papers on:
Nonlinearities … In Practice
Nonlinear process id: Methods
Nonlinear procedure identity: Friction & Contact
Nonlinear Modal Analysis
Nonlinear Modeling & Simulation
Nonlinear Vibration Absorbers
Constructive usage of Nonlinearity
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Extra resources for Topics in Nonlinear Dynamics, Volume 1: Proceedings of the 31st IMAC, A Conference on Structural Dynamics, 2013
6 Photograph of fixture used to support test subject in vertical configuration To emphasize geometric nonlinearity, experiments were also conducted with the beam cantilevered vertically from its base in a sliding table clamping fixture. This fixture was designed to support the beam in a fixed-free vertical configuration enabling both static fixed and dynamically driven base excitation experiments with design features to eliminate base rocking experienced in previous efforts . The fixture, as shown in Fig.
Each track bridge has 17 FPBs seated on each wing (total of 34 for each TB). 5 in. 27 cm). 15 show the tensile stress distribution in the interior and exterior TBs under LRV train loading. 6 MPa) for interior and exterior TBs respectively. Rail stresses, bearer bar movements and stress distribution in the TB components extracted for all analysis cases were found to be in the acceptable range. 5 Conclusion This study pertains to the bridge–train interaction analysis of Homer M. Hadley Memorial Bridge located in Seattle, Washington.
The rotational momentum caused the base to undergo a rocking motion, which introduced additional nonlinearities into the system. Furthermore, testing performed at resonant frequencies caused discrepancies between model and experimental data because NLBeam simulations did not include material damping; thus, the amplitudes of the experimental and model results did not match well for some cases. During the research presented in this paper, improvements were made to the previous experimental approach to mitigate the aforementioned issues.