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Research Papers: Pipeline Systems

Experimental and Numerical Testing of Gas Pipeline Subjected to Excavator Elements Interference

[+] Author and Article Information
Neacsa Adrian

Faculty of Mechanical Engineering,
Petroleum-Gas University of Ploiesti,
Boulevard Bucharest, No. 39,
Ploiesti 100680, Prahova, Romania
e-mail: adnea@mail.upg-ploiesti.ro

Dinita Alin

Faculty of Mechanical Engineering,
Petroleum-Gas University of Ploiesti,
Boulevard Bucharest, No. 39,
Ploiesti 100680, Prahova, Romania
e-mail: alindinita@yahoo.com

Pawel Baranowski

Faculty of Mechanical Engineering,
Military University of Technology,
2 Gen. Kaliskiego Street,
Warsaw 00-908, Poland
e-mail: pawel.baranowski@wat.edu.pl

Kamil Sybilski

Faculty of Mechanical Engineering,
Military University of Technology,
2 Gen. Kaliskiego Street,
Warsaw 00-908, Poland
e-mail: kamil.sybilski@wat.edu.pl

Ramadan Ibrahim Naim

Faculty of Mechanical Engineering,
Petroleum-Gas University of Ploiesti, Boulevard
Bucharest, No. 39,
Ploiesti 100680, Prahova, Romania
e-mail: ing_ramadan@yahoo.com

Jerzy Malachowski

Faculty of Mechanical Engineering,
Military University of Technology,
2 Gen. Kaliskiego Street,
Warsaw 00-908, Poland
e-mail: jerzy.malachowski@wat.edu.pl

Boris Blyukher

Department of Built Environment,
Myers Technology Center,
College of Technology,
Indiana State University,
Terre Haute, IN 47809
e-mail: bblyukher@indstate.edu

1Corresponding author.

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received September 18, 2015; final manuscript received January 14, 2016; published online February 22, 2016. Assoc. Editor: Osamu Watanabe.

J. Pressure Vessel Technol 138(3), 031701 (Feb 22, 2016) (9 pages) Paper No: PVT-15-1218; doi: 10.1115/1.4032578 History: Received September 18, 2015; Revised January 14, 2016

The main aim of the paper is to investigate and validate the behavior of a pipeline in the conditions of excavator elements external interference. A number of experimental tests were conducted. Four different cases were taken into account: two geometries of indenter with and without internal pressure. Discrete model of a tested pipe was developed and validated with the actual one. Simulations were performed using ls-dyna implicit code. The results obtained from the analyses were compared with the experimental tests and showed good accuracy in terms of force characteristics obtained in all simulated cases. Moreover, stress distribution in every case was also compared and discussed.

Copyright © 2016 by ASME
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References

Figures

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Fig. 1

Selected constructive and dimensional characteristics of elements of excavation equipment

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Fig. 2

Experimental setup for testing pipe without internal pressure

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Fig. 3

Experimental setup for testing pipe with internal pressure

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Fig. 4

Schematic of the investigated cases

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Fig. 5

Finer mesh within the area of direct interaction with the pipe and (a) cylindrical indenter and (b) trapezoidal indenter

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Fig. 6

FE model of the pipe with the initial–boundary conditions (cases with the internal pressure)

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Fig. 7

FE model of the pipe with the initial–boundary conditions (cases without the internal pressure)

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Fig. 8

Force versus defect depth obtained in experimental tests

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Fig. 9

HMH stress distribution (MPa) in pipe wall with area of direct interaction with cylindrical indenter without pressure (test 1)

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Fig. 10

HMH stress distribution (MPa) in pipe wall with area of direct interaction with cylindrical indenter with internal pressure (test 2)

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Fig. 11

HMH stress distribution (MPa) in pipe wall with area of direct interaction with trapezoidal indenter without internal pressure (test 3)

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Fig. 12

HMH stress distribution (MPa) in pipe wall with area of direct interaction with trapezoidal indenter with internal pressure (test 4)

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Fig. 13

Comparison graph of force versus displacement curves from FE analysis and experiment (test 1)

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Fig. 14

Comparison graph of force versus displacement curves from FE analysis and experiment (test 2)

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Fig. 15

Comparison graph of force versus displacement curves from FE analysis and experiment (test 3)

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Fig. 16

Comparison graph of force versus displacement curves from FE analysis and experiment (test 4)

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Fig. 17

HMH stress distribution in SPH soil (MPa)

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