Finite Element Analysis of the Armored Vehicle Launched Bridge (AVLB). PDF Download
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Author: Roberto P. Garcia
Publisher:
ISBN:
Category :
Languages : en
Pages : 57
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Book Description
The Armored Vehicle Launched Bridge (AVLB) is a folding bridge that was fielded in the early 1960's as the Army's standard heavy assault bridge. The bridge is rated for normal crossings of military load classification of 60 tons (MLC 60) over a maximum gap of 60 feet and a vehicle speed of 25 mph. The System Simulation and Technology Division, AMSTA-RY, was tasked by the Systems Engineering. Directorate, AMSTA-U, to perform an anlaysis of the AVLB over a 60- foot gap while an M1A1 crosses it. The objective of this project was to perform a finite element analysis (FEA) of the whole AVLB to determine high-stress areas of concern. Finite Element Analysis, AVLB.
Author: Roberto P. Garcia
Publisher:
ISBN:
Category :
Languages : en
Pages : 57
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Book Description
The Armored Vehicle Launched Bridge (AVLB) is a folding bridge that was fielded in the early 1960's as the Army's standard heavy assault bridge. The bridge is rated for normal crossings of military load classification of 60 tons (MLC 60) over a maximum gap of 60 feet and a vehicle speed of 25 mph. The System Simulation and Technology Division, AMSTA-RY, was tasked by the Systems Engineering. Directorate, AMSTA-U, to perform an anlaysis of the AVLB over a 60- foot gap while an M1A1 crosses it. The objective of this project was to perform a finite element analysis (FEA) of the whole AVLB to determine high-stress areas of concern. Finite Element Analysis, AVLB.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Abstract : Armored Vehicle Launched Bridge (AVLB) has been analyzed on its load carrying capacity and stability of bracing with theoretical computation, FEA simulation and full-size bridge engineering testing. A new method has been developed out to calculate bending loads used to define and validate required lateral and torsional brace stiffness and strength in beam structure. In the analyses of strength, stability and testing, the AVLB Military Load Class (MLC) 70 Bridge endured 2500 MLC 85T crossings working load without showing signs of damage or over stressed. It is recommended that the AVLB MLC 70 documentation and signage be updated to MLC 85T (Track) rating for newly converted or overhauled MLC 70 Bridge. Testing of the fatigued bridge could be continued the analysis to develop an inspection and service life indicator, such as Health Monitoring System, to help the sustainment and field maintenance at U.S. Army and U.S. Marines Corps (USMC).
Author: Howard E. Horner
Publisher:
ISBN: 9781423574811
Category :
Languages : en
Pages : 138
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Book Description
The current Class 60 armored vehicle launched bridge (AVLB), with an overall length of 63 ft, is capable of carrying Class 60 (military load classification MLC - 60 tons) tracked and wheeled loads over a 60-ft-wide gap. The heavier, wider M1A1 main battle tank (Class 70 load) can cross the AVLB over a 50-ft-wide gap with precautions. Several modifications were proposed to upgrade a number of AVLBs from Class 60 to Class 70 for the 60-ft clear span crossings. The objective of the work was to conduct necessary mechanical tests on selected AVLB components to obtain pertinent data to verify their load carrying capability and the proposed modifications. Various AVLB components were cut or removed from several AVLBs as samples for a variety of mechanical and special tests. Special test jigs were designed and built to test the samples of the components on the testing machine. Failure analyses were performed on the components that failed during the special tests or the fatigue tests of the modified AVLBs undergoing the simulated crossings. Two Class 60 AVLBs were converted to Class 70, with extensive modifications to the bottom chords, and then were tested. One of them was deliberately tested to failure by static overloading to observe the mode of failure. The bridge buckled in the top chords at about 190 tons. The modified bottom chords did not fail by cracking, indicating the success of the Class 70 modification program to upgrade the AVLB.
Author: Ehab Ellobody
Publisher: Butterworth-Heinemann
ISBN: 0124173039
Category : Technology & Engineering
Languages : en
Pages : 683
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Book Description
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: Alfred L. Wicks
Publisher:
ISBN:
Category : Modal analysis
Languages : en
Pages : 1136
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Book Description
Author: Ehab Ellobody
Publisher: Elsevier
ISBN: 044318996X
Category : Technology & Engineering
Languages : en
Pages : 722
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Book Description
This second edition of Finite Element Analysis and Design of Steel and Steel-Concrete Composite Bridges is brought fully up-to-date and provides structural engineers, academics, practitioners, and researchers with a detailed, robust, and comprehensive combined finite modeling and design approach. The book’s eight chapters begin with an overview of the various forms of modern steel and steel-concrete composite bridges, current design codes (American, British, and Eurocodes), nonlinear material behavior of the bridge components, and applied loads and stability of steel and steel-concrete composite bridges. This is followed by self-contained chapters concerning design examples of steel and steel-concrete composite bridge components as well as finite element modeling of the bridges and their components. The final chapter focuses on finite element analysis and the design of composite highway bridges with profiled steel sheeting. This volume will serve as a valuable reference source addressing the issues, problems, challenges, and questions on how to enhance the design of steel and steel-concrete composite bridges, including highway bridges with profiled steel sheeting, using finite element modeling techniques. Provides all necessary information to understand relevant terminologies and finite element modeling for steel and composite bridges Discusses new designs and materials used in highway and railway bridge Illustrates how to relate the design guidelines and finite element modeling based on internal forces and nominal stresses Explains what should be the consistent approach when developing nonlinear finite element analysis for steel and composite bridges Contains extensive case studies on combining finite element analysis with design for steel and steel-concrete composite bridges, including highway bridges with profiled steel sheeting
Author: D. S. McIlrath
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 132
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 992
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Author: United States. Defense Logistics Studies Information Exchange
Publisher:
ISBN:
Category : Military research
Languages : en
Pages : 236
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Book Description
Author: United States. Defense Logistics Studies Information Exchange
Publisher:
ISBN:
Category : Military research
Languages : en
Pages : 720
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Book Description
