Modelling the response of the New Svinesund arch bridge: FE model verification and updating based on field measurement

2015 ◽  
pp. 261-262
Keyword(s):  
Field Measurement ◽  
Model Verification ◽  
Fe Model ◽  
Arch Bridge

Viscoplastic Model Verification for SnPb Solder Based on Creep Tests

2009 ◽  
Author(s):  
Changwoon Han ◽  
Noh-Chang Park ◽  
Chul-Min Oh ◽  
Won-Sik Hong ◽  
Byeongsuk Song
Keyword(s):  
Printed Circuit Board ◽  
Model Verification ◽  
Circuit Board ◽  
Fe Model ◽  
Creep Tests ◽  
Anchor System ◽  
Snpb Solder ◽  
Temperature Load ◽  
Solder Temperature ◽  
Eutectic Snpb

Heat sink assembly for a main board in a server station is built on printed circuit board by an anchor system, mounted by eutectic SnPb solder. Constant high temperature condition in the station keeps solder creeping and makes it failed eventually. To calculate the stress and predict the life of soldered anchor in the station, an FE model of anchor system is built. As viscoplastic behavior of solder depends on several factors such as microstructure of solder, temperature, load, and loading rate, model characteristics should be verified before applying it to life prediction. In this study, Anand unified constitutive equation is adapted for solder modeling and its creep behavior is calibrated and verified based on creep tests.

Local Stress Analysis and Model Test of Arch Foot for a Steel Box Arch Bridge on High-Speed Railway

2010 ◽  
Author(s):  
X. H. He ◽  
A. H. Zhao ◽  
A. Scanlon ◽  
L. P. Peng
Keyword(s):  
Model Test ◽  
High Speed ◽  
Local Stress ◽  
Scale Model ◽  
Fe Model ◽  
Stress Distributions ◽  
High Speed Railway ◽  
Arch Bridge ◽  
Railway Line ◽  
Under Construction

A large span X-style steel box arch bridge is under construction for a high speed railway line between Nanning and Guangzhou. A 1:8 scale model test of the arch foot for the bridge is described. Based on the two-step finite element (FE) analysis method using commercial software, a global FE model of the bridge and local FE model of arch foot are developed. Local stress distributions of the arch foot are obtained. Typical experimental stresses measured in the scale model are presented and compared against those obtained from FE analyses of different models. The results are used to provide recommendations for design of the bridge and other similar bridges.

Investigation of a Software for Finite Element Model Updating of Bridges Based on Interface Technology between VC++ and MATLAB

2013 ◽  
Vol 540 ◽  
pp. 1-10
Author(s):  
Yang Liu ◽  
Zhan Lv ◽  
Hong Zhang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Model Updating ◽  
Element Model ◽  
Steel Tube ◽  
Finite Element Model Updating ◽  
Fe Model ◽  
Arch Bridge ◽  
Fe Model Updating

To develop an effective software for finite element (FE) model updating of bridges, the interface technology between VC++ and MATLAB was investigated firstly, and then a software for updating FE model of bridges, named Doctor for Bridges (version 1.0) was developed. Finally, a model ofconcrete-filled steel tube arch bridge was applied to verify the performance and effectiveness of the proposed software.

scholarly journals Seismic vulnerability assessment and fragility curves for a multistorey gallery arch bridge

2021 ◽  
Vol 3 (6) ◽  
Author(s):  
Vinay Shimpi ◽  
Madappa V. R. Sivasubramanian ◽  
S. B. Singh ◽  
D. Kesavan Periyasamy
Keyword(s):  
Seismic Vulnerability ◽  
Fragility Curves ◽  
Nonlinear Dynamic Analysis ◽  
Ambient Vibration ◽  
Stone Masonry ◽  
Mode Shapes ◽  
Fe Model ◽  
Masonry Arch ◽  
Arch Bridge ◽  
Railway Line

AbstractThe masonry bridges on the Kalka Shimla Mountain Railway line, which have multiple arch galleries in the form of Roman aqueducts, are spectacular. The Kalka Shimla Mountain Railway line is situated in severe seismic zones (Indian Standard 1893:2016). This research assesses the seismic vulnerability of masonry arch Bridge No. 541 situated on the Kalka Shimla Mountain Railway line. This bridge is the tallest on the route. In particular, it assesses the seismic vulnerability of the bridge using finite element (FE) analysis. For this purpose, an FE model for the bridge is developed using the ABAQUS FE-based environment. The experimental field study conducted on the bridge using an ambient vibration test (AVT) and dynamic parameters (frequency and mode shapes) is evaluated by operational modal analysis (OMA). Further, the FE model is updated by modifying the elastic mechanical property of the stone masonry to match the analytical modal frequency with the results of the AVT and OMA. The updated model is then used to perform a pushover analysis and nonlinear dynamic analysis to estimate the seismic performance of the bridge. Furthermore, fragility curves are developed for the bridge to estimate the damage state for specific seismicity. The study shows that the bridge is vulnerable to Zone IV seismicity and needs some retrofitting in specific locations such as the pier–abutment joints.

Modal identification of a reduced-scale masonry arch bridge with experimental measurements and finite element method

2017 ◽  
Vol 3 (3) ◽  
pp. 108
Author(s):  
Emre Alpaslan ◽  
Burcu Dinç ◽  
Kemal Hacıefendioğlu ◽  
Gökhan Demir ◽  
Olgun Köksal
Keyword(s):  
Finite Element ◽  
Model Calibration ◽  
Modal Parameters ◽  
Fe Model ◽  
Masonry Arch ◽  
Arch Bridge ◽  
Bridge Model ◽  
Historical Masonry ◽  
Reduced Scale ◽  
Masonry Arch Bridge

This study aims to investigate modal parameters such as mode shapes, natural frequencies and damping ratios of a reduced scale one-span historical masonry arch bridge constructed in laboratory conditions by performing numerical and experimental analysis. Sarp Dere historical masonry bridge, in Ordu, Ulubey, has 15.5m in length and 4.75m in width was chosen as a prototype model. The reduced-scale bridge model and structural details were carried out in the scale of 1:12.5. Operational Modal Analysis (OMA) technique was used for experimental study. The experimental modal parameters of the bridge model were figured out by using Enhanced Frequency Domain Decomposition (EFDD). ANSYS software was used to create 3D finite element (FE) model and to expose the analytical modal parameters of the reduced-scaled bridge model. Moreover, FE model of the reduced-scale bridge model was calibrated based on the experimental results by using the Response Surface based FE model calibration technique to obtain more accurate results. The analysis results of experimental, initial and calibrated FE model were compared. It is noted that there are significant differences between the modal parameters obtained from experimental and initial FE model. Model calibration techniques are beneficial to get a more reasonable FE model.

A Methodology for Assessment of Internal Flow-Induced Vibration (FIV) in Subsea Piping Systems

2011 ◽  
Author(s):  
Yetzirah Urthaler ◽  
Lyle E. Breaux ◽  
Scot I. McNeill ◽  
Eric M. Luther ◽  
Julian Austin ◽  
...  
Keyword(s):  
Vibration Spectrum ◽  
Internal Flow ◽  
Measured Data ◽  
Model Verification ◽  
Modal Parameters ◽  
Response Analysis ◽  
Fe Model ◽  
Vibration Data ◽  
Forcing Function ◽  
Piping Systems

A methodology is presented for assessing internal flow-induced vibrations (FIV) in subsea piping systems. Finite Element (FE) models are constructed for the subject piping systems, including insulation, internal hydrocarbon weight and added mass of the surrounding sea water. Operating vibration data are measured using ROV-deployable accelerometer loggers clamped directly to the piping systems. The measured data are processed, analyzed and used for two purposes: model verification and dynamic response correlation. Modal parameters are extracted from the measured data and compared to the modal parameters computed from the structural FE model. The model is refined until the frequencies and mode shape errors are within the desired tolerance. The measured data are then used to derive a representative forcing function for use with frequency-domain random response analysis. The forcing function is derived such that the properties of the predicted vibration spectrum match those of the measured vibration spectrum for all measurement locations. The method presented herein provides a novel semi-empirical technique for calibrating FE models to make fatigue life predictions for subsea piping systems using measured vibration data.

Study on the Vortex-Induced Vibration of a Long-Span Arch Bridge

2014 ◽  
Vol 488-489 ◽  
pp. 681-684
Author(s):  
Chun Ping Tang ◽  
Liang Liang Zhang
Keyword(s):  
Numerical Analysis ◽  
Field Measurement ◽  
Wind Field ◽  
Three Dimensional ◽  
Mountainous Terrain ◽  
Wind Environment ◽  
Vortex Induced Vibration ◽  
Arch Bridge ◽  
Large Span ◽  
Long Span

This study focuses on a super-large bridge in mountainous terrain. Through field measurement, it explored the wind environment characteristics on the location of this bridge, simulated the three-dimensional wind field of long-span half-through arch bridge, and deduced the motion equation and amplitude expression formula of the vortex-induced vibration of large-span half-through arch bridge. By numerical analysis, the vortex-induced vibration response values in completion state and maximum cantilever state are calculated.

Specimen-Specific Verification of Predicted TKR Mechanics During Simulated Deep Flexion Loading Conditions

2008 ◽  
Author(s):  
Mark A. Baldwin ◽  
Chadd W. Clary ◽  
Lorin P. Maletsky ◽  
Paul J. Rullkoetter
Keyword(s):  
Finite Element ◽  
Soft Tissue ◽  
Computational Models ◽  
Model Verification ◽  
Finite Element Models ◽  
Fe Model ◽  
Explicit Finite Element ◽  
Knee Simulator ◽  
Total Knee ◽  
Six Degree Of Freedom

Verified computational models of total knee replacement serve as the primary design-phase tool for parametric analysis of implant geometry. Previously, dynamic finite element models of the Kansas Knee Simulator (KKS) were developed and tibiofemoral (TF) and patellofemoral (PF) kinematic predictions were verified by comparison with experimental measurements [1,2]. In this prior work, the implants were mounted in metallic fixtures to assess the ability of the model to accurately predict the TF and PF kinematics without the additional complexity of variable cadaver specimens and soft-tissue constraint. The next step in the systematic model verification procedure was to verify kinematic predictions with multiple specimen-specific models. Specifically, the objectives of the present study were: 1) to develop an explicit finite element (FE) model of the KKS capable of recreating experimental loading protocols for a deep knee bend activity and 2) to verify predicted six degree-of-freedom (DOF) TF and PF kinematics of two cruciate retaining (CR) and two posterior stabilized (PS) implanted specimen-specific models with deformable, wrapping soft tissue constraint.

Static Model Experiment Study on a Concrete-Filled Steel Tubular Arch Bridge

2015 ◽  
Vol 648 ◽  
pp. 61-71
Author(s):  
Yong Li ◽  
Yan Xu Wang
Keyword(s):  
Mechanical Behavior ◽  
Architectural Design ◽  
Similarity Theory ◽  
Load Test ◽  
Fe Model ◽  
Scaled Model ◽  
Arch Bridge ◽  
Bridge Model ◽  
Arch Bridges ◽  
Design And Construction

It is well known that a lot of concrete filled steel tubular (CFST) arch bridges were built in China. Thus it became a main bridge type. Its architectural design shows much novelty, while the structural design is always conducted based on the finite element (FE) model analysis. Meanwhile there is no professional code for design and construction of this type of bridge. To overcome these disadvantages, scaled model tests are preferable to evaluate the mechanical behavior and provide guidelines for design and construction of prototype bridges. In this paper, an irregular CFST arch bridge as the prototype was introduced and a 1/16 scaled bridge model was designed and constructed according to the similarity theory. The experimental study on the scaled model was aimed to simulate the construction stages and mechanical behavior under moving loads. The test results are used to make comparison with the construction monitoring and bearing-capacity load test of the prototype. The analysis shows that the experimental results of the scaled model are close to the measured results of the prototype. The scaled model test was proved to be valuable for the pre-camber setup of the arch rib and the tension optimization of the suspenders and for the operation safety.

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