A parametric study on the mechanical performance of buried X65 steel pipelines under subsurface detonation

• Autorzy: Mokhtari M. , Alavi Nia A.

Identyfikatory

DOI

10.1016/j.acme.2014.12.013

• Języki publikacji: EN

Abstrakty

EN

Existing studies on the response of buried steel pipelines to explosion generally concern finding safe distance of explosion where pipeline does not undergo plastic deformation while intentional explosions impose intense deformations on steel pipelines. In order to address this gap, the present investigation is carried out numerically dealing with the response of buried API 5L grade X65 pipelines to a nearby sever explosion due to sabotage or war. Furthermore, the effects of the pipeline diameter-to-thickness ratio and internal pressure on this response were investigated numerically. A combined Eulerian–Lagrangian (CEL) method was adopted to develop a full-coupled 3D finite element model. Employing simplified Johnson-Cook material model to simulate mechanical behavior of steel pipelines and considering air in the model increased the simulation accuracy. The results from present study were compared with those of recent investigations and good agreements were observed. The results show that, the amount of deformation and consequently the value of maximum equivalent strain of pipelines decrease with either increase in operating pressure or decrease in diameter-to-thickness ratio; however, the effect of pipeline internal pressure was far more than diameter-to-thickness ratio. The results obtained from the present study can be used for improvement in protective design of steel pipelines.

Słowa kluczowe

EN

pipeline; explosion; operating pressure; diameter-to-thickness ratio; CEL method

PL

rurociąg; eksplozja; odkształcenie plastyczne

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2015
• Tom: Vol. 15, no. 3
• Strony: 668--679
• Opis fizyczny: Bibliogr. 45 poz., rys., wykr.

Twórcy

autor

Mokhtari M.

• Department of Mechanical Engineering, Bu-Ali Sina University, Hamedan, Iran

autor

Alavi Nia A.

• Department of Mechanical Engineering, Bu-Ali Sina University, Hamedan, Iran

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