Iterative finite element model updating in the time domain

作者：Hernandez Eric M^*; Bernal Dionisio

来源：Mechanical Systems and Signal Processing, 2013, 34(1-2): 39-46.

DOI：10.1016/j.ymssp.2012.08.007

• Finite element model updating
• Structural dynamics
• Parameter estimation
• State observer
• Iterative methods
• Time series

An iterative time domain formulation for finite element model updating in structural dynamics is presented. The approach is supported on a derivation showing that the discrepancy between observations and model predictions can be expressed as a convolution between the state of the system and a sequence of pseudo-Markov parameters which are linear in the change of the free parameters. The approach is illustrated by updating all the stiffness and damping parameters of a twenty degree of freedom shear beam using four noise contaminated measurements.

• 出版日期2013-1
• 单位东北大学