The Bouc/Wen model of mechanical hysteresis may be stated as a system of coupled parametric nonlinear differential equations of third order. This model is based on the equation of motion with damping for a single degree-of-freedom (DOF) system, which is able to reproduce the dynamics of a wide variety of hysteresis shapes, depending on the values of the seven parameters present in the equations. The characterization of the parameters that describe the specific shapes of hysteresis loops is not an easy task, due to the complexity of the model and the great amount of local minima in the search space. Accordingly, heuristic methods of search (optimization) must be carried out in order to curve-fit the model to the trial data sets, in order to extract damping information. Previous works on this topic deal with optimization using Genetic Algorithms (GA). This paper presents a new approach, using Particle Swarm Optimization (PSO). The performances of both methods are then compared when used for artificial and experimental hysteresis loops obtained for sandwich composite materials under test. Some damping measurement techniques often used by researchers are also explained.
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ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
September 24–28, 2005
Long Beach, California, USA
Conference Sponsors:
- Design Engineering Division and Computers and Information in Engineering Division
ISBN:
0-7918-4738-1
PROCEEDINGS PAPER
A Comparison on the Performance of Heuristic Methods of Search for Parameter Characterization of the Bouc/Wen Model of Mechanical Hysteresis Available to Purchase
Klaus H. Hornig,
Klaus H. Hornig
Auburn University, Auburn, AL
Search for other works by this author on:
George T. Flowers
George T. Flowers
Auburn University, Auburn, AL
Search for other works by this author on:
Klaus H. Hornig
Auburn University, Auburn, AL
George T. Flowers
Auburn University, Auburn, AL
Paper No:
DETC2005-84410, pp. 1281-1287; 7 pages
Published Online:
June 11, 2008
Citation
Hornig, KH, & Flowers, GT. "A Comparison on the Performance of Heuristic Methods of Search for Parameter Characterization of the Bouc/Wen Model of Mechanical Hysteresis." Proceedings of the ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 1: 20th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C. Long Beach, California, USA. September 24–28, 2005. pp. 1281-1287. ASME. https://doi.org/10.1115/DETC2005-84410
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