In this paper, a special type of beam element is developed with three nodes and with only translational degrees-of-freedom (DOFs) at each node. This element can be used effectively to build low degree-of-freedom models of rotors. The initial model from the Bernoulli theory is fitted to experimental results by nonlinear optimization. This way, we can avoid the complex modeling of contact problems between the parts of squirrel cage rotors. The procedure is demonstrated on the modeling of a machine tool spindle.
Experimental Fitting of Rotor Models by Using a Special Three-Node Beam Element
Contributed by the Design Engineering Division of ASME for publication in the JOURNAL OF COMPUTATIONAL AND NONLINEAR DYNAMICS. Manuscript received June 19, 2017; final manuscript received August 23, 2017; published online November 9, 2017. Assoc. Editor: Javier Cuadrado.
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Antali, M., Takacs, D., and Stepan, G. (November 9, 2017). "Experimental Fitting of Rotor Models by Using a Special Three-Node Beam Element." ASME. J. Comput. Nonlinear Dynam. February 2018; 13(2): 021009. https://doi.org/10.1115/1.4038148
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