The dynamic stiffness method and the Wittrick-Williams algorithm have been used herein to evaluate the natural frequencies of a Timoshenko frame. It is possible to represent with a surface the dependance of each frequency on the structure's material parameters (Young's and tangential moduli of elasticity), if they are assumed as continuous variables. Inversely, when given values of the frequencies are considered, for example from experimental tests, the frequency surfaces allow us to determine curves which cross at one point. This enables a proper identification of the material parameters and further updating of the structural model. (c) 2012 Elsevier Ltd. All rights reserved.
Identification of material parameters in Timoshenko frames / Annalisa, Greco; Pau, Annamaria. - In: COMPUTERS & STRUCTURES. - ISSN 0045-7949. - STAMPA. - 110-111:(2012), pp. 180-182. [10.1016/j.compstruc.2012.06.004]
Identification of material parameters in Timoshenko frames
PAU, Annamaria
2012
Abstract
The dynamic stiffness method and the Wittrick-Williams algorithm have been used herein to evaluate the natural frequencies of a Timoshenko frame. It is possible to represent with a surface the dependance of each frequency on the structure's material parameters (Young's and tangential moduli of elasticity), if they are assumed as continuous variables. Inversely, when given values of the frequencies are considered, for example from experimental tests, the frequency surfaces allow us to determine curves which cross at one point. This enables a proper identification of the material parameters and further updating of the structural model. (c) 2012 Elsevier Ltd. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
