Automatic CT-based finite element model generation for temperature-based death time estimation: feasibility study and sensitivity analysis

2017 ◽  
Vol 131 (3) ◽  
pp. 699-712 ◽  
Author(s):  
Sebastian Schenkl ◽  
Holger Muggenthaler ◽  
Michael Hubig ◽  
Bodo Erdmann ◽  
Martin Weiser ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Finite Element ◽  
Finite Element Model ◽  
Feasibility Study ◽  
Time Estimation ◽  
Element Model ◽  
Model Generation ◽  
Death Time ◽  
Death Time Estimation

scholarly journals Sensitivity Analysis of the Influence of Structural Parameters on Dynamic Behaviour of Highly Redundant Cable-Stayed Bridges

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
B. Asgari ◽  
S. A. Osman ◽  
A. Adnan
Keyword(s):  
Sensitivity Analysis ◽  
Finite Element ◽  
Finite Element Model ◽  
Model Updating ◽  
Structural Parameters ◽  
Element Model ◽  
Structural Behavior ◽  
Model Tuning ◽  
The Finite Element Model ◽  
Cable Stayed Bridges

The model tuning through sensitivity analysis is a prominent procedure to assess the structural behavior and dynamic characteristics of cable-stayed bridges. Most of the previous sensitivity-based model tuning methods are automatic iterative processes; however, the results of recent studies show that the most reasonable results are achievable by applying the manual methods to update the analytical model of cable-stayed bridges. This paper presents a model updating algorithm for highly redundant cable-stayed bridges that can be used as an iterative manual procedure. The updating parameters are selected through the sensitivity analysis which helps to better understand the structural behavior of the bridge. The finite element model of Tatara Bridge is considered for the numerical studies. The results of the simulations indicate the efficiency and applicability of the presented manual tuning method for updating the finite element model of cable-stayed bridges. The new aspects regarding effective material and structural parameters and model tuning procedure presented in this paper will be useful for analyzing and model updating of cable-stayed bridges.

scholarly journals Proof of principle study of ultrasonic particle manipulation by a circular array device

2012 ◽  
Vol 468 (2147) ◽  
pp. 3571-3586 ◽  
Author(s):  
Alon Grinenko ◽  
Paul D. Wilcox ◽  
Charles R. P. Courtney ◽  
Bruce W. Drinkwater
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Field Distribution ◽  
Feasibility Study ◽  
Element Model ◽  
Circular Array ◽  
Particle Manipulation ◽  
Ultrasonic Particle Manipulation ◽  
Acoustic Array ◽  
Proof Of Principle

A feasibility study of a circular ultrasonic array device for acoustic particle manipulation is presented. A general approach based on Green's function is developed to analyse the underlying properties of a circular acoustic array. It allows the size of a controllable device area as a function of the number of array elements to be established and the array excitation required to produce a desired field distribution to be determined. A set of quantitative parameters characterizing the complexity of the pressure landscape is suggested, and relation to the number of array elements is found. Next, a finite-element model of a physically realizable circular piezo-acoustic array device is employed to demonstrate that the trapping capability can be achieved in practice.

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