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Reduced-order computational model in nonlinear structural dynamics for structures having numerous local elastic modes in the low-frequency range. Application to fuel assemblies
Abstract : We are interested in the construction of a reduced-order computational model for nonlinear complex dynamical structures which are characterized by the presence of numerous local elastic modes in the low-frequency band. This high modal density makes the use of the classical modal analysis method not suitable. Therefore the reduced-order computational model is constructed using a basis of a space of global displacements, which is constructed a priori and which allows the nonlinear dynamical response of the structure observed on the stiff part to be predicted with a good accuracy. The methodology is applied to a complex industrial structure which is made up of a row of seven fuel assemblies with possibility of collisions between grids and which is submitted to a seismic loading.
Cited literature [25 references]
https://hal-upec-upem.archives-ouvertes.fr/hal-00821274
Contributor : Christian Soize <>
Submitted on : Wednesday, May 8, 2013 - 1:26:07 PM
Last modification on : Wednesday, February 17, 2021 - 10:42:04 AM
Long-term archiving on: : Friday, August 9, 2013 - 4:04:55 AM
Contributor : Christian Soize <>
Submitted on : Wednesday, May 8, 2013 - 1:26:07 PM
Last modification on : Wednesday, February 17, 2021 - 10:42:04 AM
Long-term archiving on: : Friday, August 9, 2013 - 4:04:55 AM
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