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Enabling harmonic balance method to be applied for distributed geometric nonlinearities in structural dynamics
Lian, S; El Haddad, F; Salles, Loïc
202029th International Conference on Noise and Vibration engineering (ISMA2022)
Peer reviewed
 

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Abstract :
[en] In this paper, a general harmonic balance finite element method is developed for the 3D structure. An investigation of the nonlinear dynamic behavior of a three dimensional beam due to distributed geometric nonlinearities arising from large displacements is proposed in this paper. Green-Lagrange strain measures paired with the Harmonic Balance Method with Alternating Frequency/Time (HB-AFT) domain technique to simulate the nonlinear response has been used to obtain the dynamic behaviours for both the linear and nonlinear cases. It has been found that geometric nonlinearities present hardening effects on the forced frequency response of the system. Also, higher order elements have shown to better capture the vibration characteristics of the structure, however this comes with a cost of increased computational time.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Lian, S
El Haddad, F
Salles, Loïc  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Vibration of Turbomachines ; Imperial College London > Mechanical Engineering
Language :
English
Title :
Enabling harmonic balance method to be applied for distributed geometric nonlinearities in structural dynamics
Publication date :
2020
Event name :
29th International Conference on Noise and Vibration engineering (ISMA2022)
Event place :
Leuven, Belgium
Event date :
2020
Audience :
International
Peer review/Selection committee :
Peer reviewed
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since 06 July 2025

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