Nonlinear modeling of the vehicle/structure interaction on a skewed highway bridge using an iterative uncoupled approach

Mosavi, A. A. and Mitra, M. and Van Der Linden, G. W. and Gordon, T. and Sedarat, H. and Emami-Naeini, A. and Jacob, V. and Krimotat, A. and Gilbert, M. and Lynch, J. (2012) Nonlinear modeling of the vehicle/structure interaction on a skewed highway bridge using an iterative uncoupled approach. In: Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security, March 11, 2012, San Diego, California.

Full content URL: http://dx.doi.org/10.1117/12.916187

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Item Type:Conference or Workshop contribution (Paper)
Item Status:Live Archive

Abstract

Vehicle/structure interaction is extremely important in determining the structural performance of highway bridges. However, an accurate prediction of the generated vibrations and forces requires a high-fidelity nonlinear 3D model which is sufficiently representative of the actual vehicle and bridge structure. In spite of all the computational advancements, there are still many technical difficulties to obtain a converging solution from a coupled highly nonlinear and highly damped vehicle/structure models. This paper presents an iterative uncoupled approach to obtain an accurate estimation of the vehicle/structure interaction. The multi-axle vehicle is simulated using a nonlinear 3D multibody dynamics model. The bridge model also contains several nonlinear components to accurately model the bridge behavior. The vehicle/bridge interaction results are obtained through an iterative solution by exchanging the outputs of two uncoupled nonlinear models. A convergence criterion is selected to obtain a reliable solution after several of these iterations. Finally, a reduced-order model of the bridge is developed using a state-space model. The linear reduced-order model of the bridge is coupled with the nonlinear vehicle model to improve the solution time of the analysis. The results are in a very good agreement with the iterative uncoupled approach. © 2012 SPIE.

Additional Information:Conference Code: 89788 Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2012
Keywords:3D models, Accurate estimation, Accurate prediction, Bridge model, Bridge structures, Convergence criterion, High fidelity, Highly nonlinear, Iterative solutions, Iterative uncoupled, Multi-axle, Multibody dynamics model, Non-linear model, Nonlinear, Nonlinear components, Nonlinear modeling, Reduced order models, Solution time, State-space models, Structural performance, Technical difficulties, Vehicle model, Aerospace engineering, Highway bridges, Nondestructive examination, Nonlinear systems, Optical engineering, Three dimensional
Subjects:H Engineering > H100 General Engineering
H Engineering > H330 Automotive Engineering
Divisions:College of Science > School of Engineering
ID Code:11649
Deposited On:03 Oct 2013 20:29

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