Generalized time finite element algorithm for non‐linear dynamic problems

1984 ◽  
Vol 1 (3) ◽  
pp. 247-251 ◽  
Author(s):  
Jerzy Kujawski ◽  
Chandrakant S. Desai
Keyword(s):  
Finite Element ◽  
Dynamic Problems ◽  
Linear Dynamic ◽  
Non Linear ◽  
Element Algorithm ◽  
Generalized Time

scholarly journals Operational Modal Analysis and Non-Linear Dynamic Simulations of a Prototype Low-Rise Masonry Building

Buildings ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 471
Author(s):  
Ilaria Capanna ◽  
Riccardo Cirella ◽  
Angelo Aloisio ◽  
Franco Di Di Fabio ◽  
Massimo Fragiacomo
Keyword(s):  
Finite Element ◽  
Modal Analysis ◽  
Dynamic Behaviour ◽  
Model Updating ◽  
Masonry Building ◽  
Masonry Buildings ◽  
Mechanical Parameters ◽  
Linear Dynamic ◽  
Global Dynamic ◽  
Non Linear

This paper focuses on the dynamic behaviour of a low-rise masonry building representing the Italian residential heritage through experimental and numerical analyses. The authors discuss an application of combined Operational Modal Analysis and Finite Element Model updating for indirect estimation of the structural parameters. Two ambient vibration tests were carried out to estimate the structure’s dynamic behaviour in operational conditions. The first experimental setup consisted of accelerometers gathered in a row along the first floor to characterize the local dynamic of the floor. Conversely, the second setup had the accelerometers placed at the building’s corners to characterize the global dynamics. The outcomes of the first setup were used to estimate the mechanical parameters of the floor, while the ones form the second were used to characterize the mechanical parameters of the masonry piers. Therefore, two finite element models were implemented: (i) a single beam with an equivalent section of the floor to grasp the local behaviour of the investigated horizontal structure; (ii) an equivalent frame model of the entire building to characterise the global dynamic behaviour. The model updating process was developed in two phases to seize local and global dynamic responses. The updated numerical model formed the basis for a sensitivity analysis using the modelling parameters. The authors chose to delve into the influence of the floor on the dynamic behaviour of low-rise masonry buildings. With this aim, non-linear dynamic analyses were carried out under different mechanical characteristics of floors, expressing the scatter for ordinary masonry buildings. The displacements’ trends along the height of the building evidenced the notable role of the floor’s stiffness in the non-linear dynamic behaviour of the building. Lastly, the authors derived the fragility curves predicting the seismic performance in failure probability under a highly severe damage state.

scholarly journals LPV framework for Non-Linear Dynamic Control of Soft Robots using Finite Element Model

2020 ◽  
Vol 53 (2) ◽  
pp. 7312-7318
Author(s):  
Maxime Thieffry ◽  
Alexandre Kruszewski ◽  
Thierry-Marie Guerra ◽  
Christian Duriez
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Dynamic Control ◽  
Element Model ◽  
Soft Robots ◽  
Linear Dynamic ◽  
Non Linear
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