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Three Dimensional Finite Element Analysis Of Buried Pipes
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Book Synopsis Three Dimensional Finite Element Analysis of Buried Pipes by : Cao, Wei.
Download or read book Three Dimensional Finite Element Analysis of Buried Pipes written by Cao, Wei. and published by Halifax, N.S. : Technical University of Nova Scotia. This book was released on 1994 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Three-dimensional Finite Element Analysis of Longitudinal Support in Buried Pipes by : Allen Jay Evans
Download or read book Three-dimensional Finite Element Analysis of Longitudinal Support in Buried Pipes written by Allen Jay Evans and published by . This book was released on 2004 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Trickey, Susan Allison Publisher :Library and Archives Canada = Bibliothèque et Archives Canada ISBN 13 :9780494050828 Total Pages :356 pages Book Rating :4.0/5 (58 download)
Book Synopsis Three Dimensional Finite Element Modeling of Buried Pipes Including Frost Action [microform] by : Trickey, Susan Allison
Download or read book Three Dimensional Finite Element Modeling of Buried Pipes Including Frost Action [microform] written by Trickey, Susan Allison and published by Library and Archives Canada = Bibliothèque et Archives Canada. This book was released on 2005 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Large Diameter Steel Pipe Field Test Using Controlled Low Strength Material and Staged Construction Modeling Using 3-D Nonlinear Finite Element Analysis by : Franciele Bellaver
Download or read book Large Diameter Steel Pipe Field Test Using Controlled Low Strength Material and Staged Construction Modeling Using 3-D Nonlinear Finite Element Analysis written by Franciele Bellaver and published by . This book was released on 2014 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using finite element methods and field tests, an extensive study on selected steel pipes is devised for the Integrated Pipeline Project in Dallas-Fort Worth, Texas. The project integrates Tarrant Regional Water District (TRWD) existing pipelines to the Dallas system along 150 miles. Field test of buried pipes, monitoring the pipe in different trench conditions is extremely valuable in predicting the displacement of the pipe during construction stages and during its lifetime. The field instrumentation monitors the circular displacements and strains of a buried steel pipe with an outside diameter (O.D.) of 84 in. and 0.375 in. thickness in three different trench profiles using controlled low strength material. For the first case, the trench width is the O.D. plus 36 in., and CLSM is used as embedment up to 30% of the O.D. In the second case, the trench width is the O.D. plus 36 in., and CLSM is used as embedment up to 70% of the O.D. In the third case, the trench width is O.D. plus 18 in., and CSLM is used as embedment up to 70% of the O.D. From the CLSM to the top of the pipe, ordinary local soil is used and compacted to 95% standard proctor density. Approximately 5ft. of backfilling is added for all cases. For pipe structural monitoring, strain gages are attached inside and outside of the pipe to obtain the circumferential strain, and displacement transducers are installed to record both vertical and horizontal diameter displacement. The deflections of the steel pipes are effectively measured in each of the construction stages: the CLSM embedment, the soil compaction, and during the load of the 5ft. soil on top of the pipe. In addition, the buried pipes are monitored for long term deflection (around 350 days). The tests provide guidance for the finite element modeling and are an important study in predicting the structural performance of buried steel pipes. The finite element analysis developed is a three dimensional (3D) nonlinear finite element model of steel pipe coupled with CLSM and compacted soil. The finite element model consists of the pipe and soil interaction during the staged construction of embedment and backfill. The geometry of the model is created based on the pipe's undeformed shape. Due to the effect of the loads during staged construction (i.e. subsequent layers of soil being added as embedment and/or backfill), the geometry of the pipe distored for each layer of soil around it. The model also consideres the at rest lateral pressure and the lateral effect of soil compaction on the pipe-soil structure. Different trench conditions are modeled by varying in the in-situ soil stiffness for the trench wall, and trench width. The finite element model developed simulates the load-deformation results of a buried steel pipe in different trench conditions and was verified by the field test results. After developing the nonlinear finite element model for steel pipes and verifying the results with field test, the model can be used to predict pipe performance under varying backfill and loading conditions. All parameters that are modified in the models are part of the scope of the pipeline project, and are field situations that might be observed in the construction of the Integrated Pipeline.
Book Synopsis Buried Pipe Design, 2nd Edition by : A. P. Moser
Download or read book Buried Pipe Design, 2nd Edition written by A. P. Moser and published by McGraw Hill Professional. This book was released on 2001-02-13 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: This one-of-a kind resource touches on everything engineers need to know to work with and design buried piping systems. Discusses all aspects of pipe design, from basic design principles to matters relating to soil. New to this edition: coverage of materials, such as profile-wall polyurethane; new standards from ASTM, AWWA, ASHTTO, and TRB; a new safety section; and more design examples.
Book Synopsis Finite Element Analysis of the Collapse and Post-Collapse Behavior of Steel Pipes: Applications to the Oil Industry by : Eduardo N Dvorkin
Download or read book Finite Element Analysis of the Collapse and Post-Collapse Behavior of Steel Pipes: Applications to the Oil Industry written by Eduardo N Dvorkin and published by Springer Science & Business Media. This book was released on 2014-07-08 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a detailed discussion of the models that were developed to simulate the collapse and post-collapse behavior of steel pipes. The finite element method offers to engineers the possibility of developing models to simulate the collapse behavior of casings inside oil wells and the collapse behavior of deepwater pipelines. However, if technological decisions are going to be reached from these model results, with implications for the economic success of industrial operations, for the occupational safety and health and for the environment, the engineering models need to be highly reliable. Using these models engineers can quantify the effect of manufacturing tolerances, wear, corrosion, etc. This book describes in great details the experimental programs that are developed to validate the numerical results.
Book Synopsis Finite Element Analysis of Heat Flow Around Buried Pipes by : Aditya Mohan
Download or read book Finite Element Analysis of Heat Flow Around Buried Pipes written by Aditya Mohan and published by . This book was released on 1973 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Coupled Finite-discrete Element Analysis of Soil-pipe Interaction by : Masood Meidani
Download or read book Coupled Finite-discrete Element Analysis of Soil-pipe Interaction written by Masood Meidani and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Buried pipes are safe and economical method of transporting natural resources. Failure of these infrastructures poses significant damage to the environment and people safety. Permanent ground deformation is one of the major causes of buried pipe failure. It was reported that axial force on pipes buried in dense granular material obtained using the current guidelines can be significantly smaller than the measured values. Standard finite element methods are known to be efficient in studying soil-structure interaction problems, however, modeling soil-structure interaction involving granular material and large deformation is challenging, particularly at the particle scale level. On the other hand, the discrete element method has proven its capability in capturing the response of granular material at the microscopic scale. However, the method has some limitation in modeling flexible structural elements. Coupling the discrete and finite elements methods is a promising approach that takes advantage of the two methods. In this thesis, the response of buried pipes subject to axial and lateral ground movements are evaluated using three-dimensional discrete and coupled discrete-finite element methods. The research results have been published in refereed journals and presented in seven chapters that comprise this manuscript-based thesis. The behavior of rigid pipe buried in dense sand under axial ground movement is first evaluated using discrete element method. The input parameters of the model are obtained using a precise calibration procedure and numerical results are validated using experimental data. Results indicated that, for the rigid pipes buried in dense sand, current equations may not properly consider the dilative behavior of the soil and underestimate the soil axial resistance. The numerical approach has proven to be efficient in modeling pipelines subjected to relative soil movement. The created model is then used to conduct a comprehensive parametric study to develop a new expression that estimates the earth pressure coefficient and the soil axial resistance acting on the rigid pipe. A three-dimensional coupled finite-discrete element framework has been developed and used to investigate the response of a (medium density polyethylene) MDPE pipe under axial and lateral relative ground movements. The pipe is modeled using finite elements while the surrounding soil is modeled using discrete elements. Interface elements are used to transfer forces between these two domains. The response of the soil at microscale level was analyzed and the deformations and strains developing in the MDPE pipe were investigated. Results showed that caution must be considered when using current methods in the analysis of MDPE pipes. Conclusions and recommendations have been made on the pipe-soil interactions under soil movement." --
Book Synopsis Structural Mechanics of Buried Pipes by : Reynold King Watkins
Download or read book Structural Mechanics of Buried Pipes written by Reynold King Watkins and published by CRC Press. This book was released on 1999-12-06 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Buried pipes are a highly efficient method of transport. In fact, only open channels are less costly to construct. However, the structural mechanics of buried pipes can be complicated, and imprecisions in the properties of the soil envelope are usually too great to justify lengthy, complicated analyses. Designers and engineers need principles and m
Book Synopsis Finite Element Analysis of Pressurized Buried Pipe by : John Spitzley
Download or read book Finite Element Analysis of Pressurized Buried Pipe written by John Spitzley and published by . This book was released on 1987 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Three Dimensional Analysis of Buried Pipe by : Richard W. I. Brachman
Download or read book Three Dimensional Analysis of Buried Pipe written by Richard W. I. Brachman and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Buried Plastic Pipe Technology by : Dave Eckstein
Download or read book Buried Plastic Pipe Technology written by Dave Eckstein and published by ASTM International. This book was released on 1994 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A threedimensional pipe finite element for geometric nonlenear analyses by :
Download or read book A threedimensional pipe finite element for geometric nonlenear analyses written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: No transporte de fluidos ou mesmo como elementos estruturais as cascascilíndricas são largamente utilizadas em diversos segmentos da engenharia civil. Acompreensão do comportamento desse tipo de estrutura ao longo de uma trajetória deequilíbrio resultante de um histórico de carregamento de diferentes naturezas éimportante na definição da real capacidade portante dos dutos. Neste trabalho, desenvolve-se um elemento finito para análises geometricamente não linearestridimensionais de tubos. Levando-se em consideração a natureza da análise, sãoestudadas medidas adequadas de tensão e deformação, compatíveis com regimes degrandes deformações e deslocamentos. A formulação Lagrangeana Total é adotada, masas relações constitutivas utilizadas são lineares. A implementação computacionaldesenvolvida emprega um elemento finito tridimensional de tubo com 2 ou 3 nós, compatível com o regime de grandes deformações e deslocamentos, incorporando, também, os movimentos de corpo rígido da estrutura. Com o objetivo de mapear astrajetórias não lineares de equilíbrio, utilizando-se algumas metodologias propostas naliteratura, é usada uma estrutura de programação orientada a objetos, permitindo aaplicação de diferentes técnicas de análise incremental e iterativa integradas àimplementação de elementos finitos supracitada. Visando validar a formulação, osresultados obtidos no programa desenvolvido são avaliados através da comparação comsoluções analíticas e outras análises numéricas disponíveis na literatura.
Book Synopsis Computer Methods and Advances in Geomechanics by : Chandra S. Desai
Download or read book Computer Methods and Advances in Geomechanics written by Chandra S. Desai and published by Taylor & Francis US. This book was released on 1991 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structural Mechanics of Buried Pipes by : Reynold King Watkins
Download or read book Structural Mechanics of Buried Pipes written by Reynold King Watkins and published by CRC Press. This book was released on 1999-12-06 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Buried pipes are a highly efficient method of transport. In fact, only open channels are less costly to construct. However, the structural mechanics of buried pipes can be complicated, and imprecisions in the properties of the soil envelope are usually too great to justify lengthy, complicated analyses. Designers and engineers need principles and m
Book Synopsis Nonlinear Finite Element Analysis of Reinforced Concrete Pipes by : Husain Mohammad
Download or read book Nonlinear Finite Element Analysis of Reinforced Concrete Pipes written by Husain Mohammad and published by LAP Lambert Academic Publishing. This book was released on 2012-04 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study deals with structural behavior of reinforced concrete pipes under various loading and support conditions by using nonlinear three-dimensional isoparametric 20-node brick elements. the computer program of three dimensional nonlinear finite element analysis of reinforced concrete structures, written by Al- Shaarbaf is utilized. The behavior of concrete is investigated by using twenty-node brick elements. The reinforcement bars are idealized as axial members embedded within the brick elements with perfect bond between the concrete and the steel curved bars in a brick element were approximated by straight bars parallel to the main coordinate axes. The behavior of concrete in compression is simulated by an (Elastic- Plastic Work Hardening Model) followed by a perfect plastic response, which is terminated at the onest of crushing. In tension, a smeared crack model with fixed orthogonal cracks has been used with the inclusion of models for the retained post-cracking tensile stress and reduced shear transfer modulus. Loading of the pipes and support conditions were properly considered according to the characteristics of the problem.
Book Synopsis Staged Construction Modeling of Large Diameter Steel Pipes Using 3-D Nonlinear Finite Element Analysis by : Mojtaba Salehi Dezfooli
Download or read book Staged Construction Modeling of Large Diameter Steel Pipes Using 3-D Nonlinear Finite Element Analysis written by Mojtaba Salehi Dezfooli and published by . This book was released on 2015 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study investigates the performance of large diameter steel pipes during stage construction. Using this study, metal pipes are designed utilizing existing native soil for embedment around the pipe rather than imported materials. This indeed, translates into a considerable amount of cost saving and advances in designing pipeline. This model is used for peer review/ designing of a 242 km (150 miles) pipeline project, Integrated Pipeline (IPL), that transports approximately hundreds of millions of gallons from Lake Palestine, 137 km (85 miles) southeast of Dallas, to Lake Benbrook, Tarrant County, Texas. The IPL project supplies water to more than1.8 million people living in 11 counties of North Texas. The results of this study not only benefits the Tarrant Regional Water District but also can be used in other projects. A comprehensive robust nonlinear finite element analysis model was developed and verified by four experimental tests which were conducted at the University of Texas at Arlington. The developed FEM model considered all three nonlinear algorithms including geometric, material, and contact nonlinearities. The developed FEM model considered the soil compaction which is an important force in staged construction modeling of the steel pipes. Also the geometric change of pipe during construction was modeled accurately for the first time to accurately obtain the behavior of the buried steel pipes. Four instrumented large diameter steel pipes, with the diameter of 1.83 m (72 in.), were placed in a 6.1 m (20 ft) wide rigid trench with different backfilling configurations. The promising results of the study indicated that the developed model successfully predicted the experimental tests. The developed FEM model was further modified then by incorporating flexible trench wall and other unique tools to be capable of modeling different pipeline designs. Moreover, the modified FEM model was used to verify three field tests which were conducted in Rolling Hills Booster Pump Station, in Fort Worth, Texas. The comparison of the results showed that the modified FEM model also successfully predicted the real field condition. Finally, a comprehensive parametric study was conducted by identifying the most common geometric and force related parameters for large diameter pipe-soil interaction systems. These parameters include but not limited to pipe geometric parameters, backfilling properties and type and level of compaction, and in-situ soil condition. The parametric study models were generated by using a Design Program (DP) which was developed specifically in this study to support the main FEM model analysis. The DP allows the designer to feed the developed FEM model with the required design parameters which will generate the FEM model in a fraction of time compared to conventional manual model development. The results of the parametric study then were used to develop series of design equations for moment, thrust, shear, and horizontal and vertical deflection of buried steel pipes as a function of independent variables which were comprehensively identified in parametric study. The developed equation will be a platform to be used in the steel pipe design manuals.
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