Distributed parameter estimation for NASA Mini-Mast truss using Timoshenko beam modelA more accurate Timoshenko beam model is used to characterize the bending behavior of the truss. A maximum likelihood estimator for the Timoshenko beam model has been formulated. A closed-form solution of the Timoshenko beam equation, for a uniform cantilevered beam with two concentrated masses, is derived so that the procedure for the estimation of modal characteristics is much improved. The updated model to the NASA Mini-Mast test data is demonstrated.
Document ID
19920046742
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Shen, Ji-Yao (NASA Langley Research Center Hampton, VA, United States)
Huang, Jen-Kuang (Old Dominion University Norfolk, VA, United States)
Taylor, Lawrence W., Jr. (NASA Langley Research Center Hampton, VA, United States)