Finite Element Modeling Approach and Performance Evaluation of Fiber Reinforced Polymer Sandwich Bridge Panels PDF Download

Author: Stanley Onyema Oghumu
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: C. S. Cai
Publisher:
ISBN:
Category : TECHNOLOGY & ENGINEERING
Languages : en
Pages : 200

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Author: Robert J. Hauber
Publisher:
ISBN:
Category :
Languages : en
Pages : 44

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A finite element model of a fiber reinforced polymer (FRP) bridge in Hamilton County, Ohio was conducted using the computer program SAP2000. The purpose of the model was to determine the vertical deflection under a specified truck loading and to compare the analytical results from the model with load test results of the actual bridge, which spanned approximately 20 feet. The bridge superstructure was composed of eight separate panels that were assembled on site. The panels were constructed of a sandwich panel deck with integral beams spaced approximately two feet on center with the panels themselves being approximately seven and a half feet wide. The finite element model utilized shell elements to represent the different FRP components of the bridge such as the top and bottom faces of the deck along with the beam webs and flanges. The material properties input into the model for the shell elements were provided by the manufacturer. A mesh sensitivity analysis was conducted to identify an adequate discretization of the bridge without creating an excessive amount of elements in the model. Once this was accomplished, the entire bridge was then modeled with the applied loading to mimic the truck loading tests to which the actual bridge was subjected in order to assess the validity of the finite element model. The results of the model showed good agreement with the experimental results, validating the model.

Author: Ursula Mercedes Deza
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 330

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"This investigation studied the structural performance of FRP composite materials in bridge decks through in-place load tests and analytical studies. Two multi-panel bridge decks were studied: Saint Francis Street Bridge consisting of a deck built with four glass FRP (GFRP) honeycomb panels, whereas Waters Street Bridge consists of nine FRP-RC panels. The performance of the two bridges was monitored by load tests for over three to four years. The main objectives of this investigation were: to examine the deflection data in service that can be correlated to allowable deflections; to estimate if there is any stiffness degradation that can indicate distress in the deck; to compute the load fraction distribution between panels based on experimental data and attempt the load rating using the load test results"--Introduction, leaves 2-3.

Author: Cheng Zhang
Publisher:
ISBN:
Category :
Languages : en
Pages : 242

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Finite element analysis -- Fiber reinforced polymer -- Bridge deck -- Linear analysis model -- Delamination analysis model.

Author: Andrew R. Neumann
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Three types of fiber reinforced polymer bridge deck panels were supplied to the University of Cincinnati. Specimens included were small-size specimens supplied by their respective manufacturers and full-size specimens obtained from the Salem Avenue bridge in Dayton, Ohio. Research performed includes: long-term environmental monitoring, load testing, and finite-element analysis. Long-term environmental monitoring was performed on small-size specimens for all three deck types. Environmental monitoring included collection of temperature and strain data over a period of nine months. Average internal mperature, coefficient of thermal expansion (in both directions), and temperature gradient were calculated for each type of panel. Load testing was performed at the University of Cincinnati Large Scale Test Facility (UCLSTF). Load tests were performed on small-size specimens and full-size specimens obtained from a bridge retrofit project. Effective flexural and shear stiffness were calculated for each panel tested. Failure load and failure type for each test are reported. Finally, a finite-element model of a full-size panel was created for one of the deck types in order to capture the effects of internal damages. Analysis results of the finite-element model are compared against experimental results.

Author: Ehab Ellobody
Publisher: Butterworth-Heinemann
ISBN: 0124173039
Category : Technology & Engineering
Languages : en
Pages : 683

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In recent years, bridge engineers and researchers are increasingly turning to the finite element method for the design of Steel and Steel-Concrete Composite Bridges. However, the complexity of the method has made the transition slow. Based on twenty years of experience, Finite Element Analysis and Design of Steel and Steel-Concrete Composite Bridges provides structural engineers and researchers with detailed modeling techniques for creating robust design models. The book’s seven chapters begin with an overview of the various forms of modern steel and steel–concrete composite bridges as well as current design codes. This is followed by self-contained chapters concerning: nonlinear material behavior of the bridge components, applied loads and stability of steel and steel–concrete composite bridges, and design of steel and steel–concrete composite bridge components. Constitutive models for construction materials including material non-linearity and geometric non-linearity The mechanical approach including problem setup, strain energy, external energy and potential energy), mathematics behind the method Commonly available finite elements codes for the design of steel bridges Explains how the design information from Finite Element Analysis is incorporated into Building information models to obtain quantity information, cost analysis

Author: Imran Hyder
Publisher:
ISBN:
Category : Carbon fiber-reinforced plastics
Languages : en
Pages : 112

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The ability to engineer stiffness and strength in any desired direction make composites an ideal material candidate for various applications when compared to their traditional isotropic counterparts. In spite of this, the ability to model the material response in composites has yet to be fully explored. Composite research largely focuses on in-plane conditions and research involving modeling Mode III (out-of-plane shear) is limited. Mode III occurs when adjacent sections of a plate are displaced in opposite out-of-plane directions, thus causing through-thickness tearing. Mode III can potentially lead to catastrophic failure for composite designs with inadequate out-of-plane transverse properties exposed to excessive out-of-plane loads. This can be countered by overdesigning a structure, but at the cost of sacrificing efficiency. Hence it is necessary to have models to appropriately capture material behavior during loading for design and analytical purposes. Commercial finite element (FE) packages are available for simulating various loading conditions, but there has not been an assessment of their applicability for composites enduring Mode III. This study aimed to evaluate the performance of a commercial finite element package, Abaqus, for modeling Mode III loading of edge notched Carbon Fiber Reinforced Polymer panels using previously conducted experiments as a metric. Six ply layups were considered and were composed of either 20 or 40 unidirectional plies. For each thickness, 10%, 30%, and 50% zero-degree panels were studied. Panels also included 45, -45, and 90 degree plies. This investigation was divided into two studies: Evaluation of finite element analysis (FEA) prior to visible damage initiation and evaluation of FEA for progressive failure simulation. The first study utilized strain fields obtained from Digital Image Correlation (DIC) and load versus displacement profiles retrieved from experiments to evaluate elastic based FEA conducted with Abaqus/Standard. Abaqus/Standard was able to simulate strain fields roughly within 30% with the exception of small regions near the notch tip and predict the loads with a percent difference of 20%. The 50% zero-degree panels was an exception in which large discrepancies occurred between experiments and FEA. The second study involved assessing Abaqus/Standard, Abaqus/Standard with the add-in Helius:MCT, and Abaqus/Explicit for simulating progressive failure analyses. Experimentally obtained load versus displacement profiles, damage paths, and maximum loads were used as a metric to evaluate the solvers. It was found that the solvers were not able to predict the complete damage paths. However, Abaqus/Standard and Abaqus/Explicit were able to predict the maximum loads with a percent difference of 20%. Helius:MCT experienced convergence failures using default settings. Although accuracy and predictive capabilities were limited, the solvers were able to provide reasonable approximations for the material behavior.

Author: Chunsheng Cai
Publisher:
ISBN:
Category : TECHNOLOGY & ENGINEERING
Languages : en
Pages : 0

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Author: William Edward Wolfe
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 100

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