A PC based FE Model for Identification of Static Behaviour of a Highway Bridge

2009 ◽  
Author(s):  
H. Alaylioglu ◽  
A. Alaylioglu ◽  
C.E. Ackerman ◽  
E. van der Merwe
Keyword(s):  
Highway Bridge ◽  
Fe Model ◽  
Static Behaviour

Computational evaluation of electro-magnetic circuits’ effect on the coupled response of multifunctional magneto-electro-elastic composites plates exposed to hygrothermal fields

2020 ◽  
pp. 095440622095448 ◽  
Author(s):  
M Vinyas ◽  
D Harursampath
Keyword(s):  
Equations Of Motion ◽  
Shear Deformation Theory ◽  
Higher Order ◽  
Fe Model ◽  
Energy Principle ◽  
Magnetic Circuits ◽  
Computational Evaluation ◽  
Electro Magnetic ◽  
Elastic Composites ◽  
Static Behaviour

This work presents a higher order finite element (FE) model to gauge the static behaviour of hygrothermo-magneto-electro-elastic (HTMEE) plates with different electro-magnetic circuits. The FE model is composed of eight-noded isoparametric elements. The displacement equations are presumed to obey the higher order shear deformation theory (HSDT) and the governing equations of motion are obtained with the support of the virtual energy principle. The correctness of the FE model is verified against previously published results. The influence of electro-magnetic boundary conditions associated with hygrothermal loads, stacking sequences, empirical constants and different loading profiles have been studied in detail. The results of this article are the first of its kind in literature. Hence, it is believed to set benchmark for future investigations on multifunctional structures.

scholarly journals Wireless-Based Identification and Model Updating of a Skewed Highway Bridge for Structural Health Monitoring

2020 ◽  
Vol 10 (7) ◽  
pp. 2347 ◽  
Author(s):  
Leqia He ◽  
Edwin Reynders ◽  
Jaime H. García-Palacios ◽  
Giuseppe Carlo Marano ◽  
Bruno Briseghella ◽  
...  
Keyword(s):  
Finite Element ◽  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Model Updating ◽  
Element Model ◽  
Mode Shapes ◽  
Highway Bridge ◽  
Fe Model ◽  
Structural Health ◽  
Skewed Bridge

Vibration-based monitoring was performed on a short-span skewed highway bridge on the basis of wireless measurements. By means of operational modal analysis, highly accurate modal results (frequencies and mode shapes) were extracted by using a self-developed wireless acquisition system, for which the performance was verified in the field. In order to reproduce the experimental modal characteristics, a refined finite element model was manually tuned to reduce the idealization errors and then updated with the sensitivity method to reduce the parametric errors. It was found that to build a reliable Finite element (FE) model for application in structural health monitoring, the effects of superelevation and boundary conditions of a skewed bridge should be taken into account carefully.

Representation of bolted joints in a structure using finite element modelling and model updating

2020 ◽  
Vol 14 (3) ◽  
pp. 7141-7151 ◽  
Author(s):  
R. Omar ◽  
M. N. Abdul Rani ◽  
M. A. Yunus
Keyword(s):  
Finite Element ◽  
Dynamic Behaviour ◽  
Model Updating ◽  
Complex Structure ◽  
Bolted Joints ◽  
Model Parameters ◽  
Fe Model ◽  
Bolted Joint ◽  
Fe Modelling ◽  
Joint Structure

Efficient and accurate finite element (FE) modelling of bolted joints is essential for increasing confidence in the investigation of structural vibrations. However, modelling of bolted joints for the investigation is often found to be very challenging. This paper proposes an appropriate FE representation of bolted joints for the prediction of the dynamic behaviour of a bolted joint structure. Two different FE models of the bolted joint structure with two different FE element connectors, which are CBEAM and CBUSH, representing the bolted joints are developed. Modal updating is used to correlate the two FE models with the experimental model. The dynamic behaviour of the two FE models is compared with experimental modal analysis to evaluate and determine the most appropriate FE model of the bolted joint structure. The comparison reveals that the CBUSH element connectors based FE model has a greater capability in representing the bolted joints with 86 percent accuracy and greater efficiency in updating the model parameters. The proposed modelling technique will be useful in the modelling of a complex structure with a large number of bolted joints.

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