An Improved Algorithm for Moving Force Identification

Abstract:

The pretreatment conjugate gradient method (PCGM) is proposed to improve the ill-posed problem of moving force identification. Compared with the time domain method (TDM), the identification accuracy of the time-varying bending moment responses is more obviously improved. Meanwhile, the pretreatment matrix is very important to the PCGM because it affects the identification accuracy and robust noise immunity as well as ill-posed problems identification to some extent, choosing proper preconditioned matrix can effectively improve both of identification accuracy and efficiency of the PCGM.

• Periodical: Applied Mechanics and Materials (Volumes 438-439)
• Pages: 935-938
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.438-439.935
• Online since: October 2013
• Authors: Zhen Chen, Jun Ling Han, Jun Jie Li
• Keywords: Bending Moment Responses, Moving Force Identification, Numerical Simulation, Pretreatment Conjugate Gradient Method

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