An Inverse Problem in Estimating Simultaneously the Time-Dependent Applied Force and Moment of an Euler-Bernoulli Beam
Cheng-Hung Huang; and Chih-Chun Shih

doi:10.3970/cmes.2007.021.239
Source CMES: Computer Modeling in Engineering & Sciences, Vol. 21, No. 3, pp. 239-254, 2007
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Abstract An inverse forced vibration problem, based on the Conjugate Gradient Method (CGM), (or the iterative regularization method), is examined in this study to estimate simultaneously the unknown time-dependent applied force and moment for an Euler-Bernoulli beam by utilizing the simulated beam displacement measurements. The accuracy of this inverse problem is examined by using the simulated exact and inexact displacement measurements. The numerical experiments are performed to test the validity of the present algorithm by using different types of applied force and moment, sensor locations and measurement errors. Results show that excellent estimations on the applied force and moment can be obtained with any arbitrary initial guesses.
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