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Finite element approach of the buried pipeline on tensionless foundation under random ground excitation

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  • Hsu, Yang Shang

Abstract

This work presents an investigation in the numerical performance of finite element approach in the dynamic elastoplastic analysis of buried pipeline, which is subjected to random ground motion. The surrounding soil is modeled by Winkler and Pasternak type foundation, while the random ground motion is generated synthetically by generalized nonstationary Kanai–Tajimi model. The governing equation is formulated by Euler–Bernoulli beam theory and discretized by beam-pipe element. Moreover, the von Mises isotropic hardening model is employed for material behavior modeling. The Hilber–Hughes–Taylor (HHT) method and the Newton–Raphson method are adopted as the time incremental iterative algorithm to solve the global equilibrium equation. Several applications are carried out to investigate the numerical performance of the present numerical model in dealing with the dynamic elastoplastic analysis of buried pipe. The norm L2 of stress and displacement error are determined for different time intervals and the factors that contribute to the error reduction are investigated in present work.

Suggested Citation

  • Hsu, Yang Shang, 2020. "Finite element approach of the buried pipeline on tensionless foundation under random ground excitation," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 169(C), pages 149-165.
    • Handle: RePEc:eee:matcom:v:169:y:2020:i:c:p:149-165
    DOI: 10.1016/j.matcom.2019.09.004
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    References listed on IDEAS

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    1. Lanzano, Giovanni & Salzano, Ernesto & de Magistris, Filippo Santucci & Fabbrocino, Giovanni, 2013. "Seismic vulnerability of natural gas pipelines," Reliability Engineering and System Safety, Elsevier, vol. 117(C), pages 73-80.
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    Cited by:

    1. Abubakr E. S. Musa & Madyan A. Al-Shugaa & Amin Al-Fakih, 2022. "Free–Free Beam Resting on Tensionless Elastic Foundation Subjected to Patch Load," Mathematics, MDPI, vol. 10(18), pages 1-16, September.

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    More about this item

    Keywords

    Buried pipeline; Dynamic elastoplastic; Kanai–Tajimi model; Finite element; Norm L2 of displacement and stress errors; Pasternak foundation; Winkler foundation;
    All these keywords.

    JEL classification:

    • L2 - Industrial Organization - - Firm Objectives, Organization, and Behavior

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