Investigation of the dynamic response of the subsea transmission pipeline under explosion impact using experimental and numerical methods

Subject Areas : Analysis of Structure and Earthquake

Hamid nasiri ¹ , mohammad asadian ghahferokhi ² , Madjid Ghodsi Hassanabad ³ , amin bahmanpour ⁴

1 - PhD Student, Department of Marine Industries, Islamic Azad University, Science and Research Branch, Tehran, Iran
2 - Assistant professor, Department of Marine industries, Science and Research Branch, Islamic Azad University, Tehran, Iran
3 - Assistant professor, Department of Marine industries, Science and Research Branch, Islamic Azad University, Tehran, Iran
4 - Assistant Professor, Department of Civil Engineering, Islamic Azad University, Science and Research Branch, Tehran, Iran

Received: 2022-05-28 Accepted : 2022-08-24 Published : 2022-09-04

Keywords: Abaqus Software, Explosion, Dynamic Response, Marine Structures, experimental and Numerical Methods,

Abstract :

Sea and high seas are very important, which can be considered in two aspects. On the one hand, the seas have economic, commercial, logistical, military, and geopolitical advantages, in addition, they pave the way for increased maritime diplomacy. In addition to these advantages, the harsh natural conditions at sea, such as the presence of high waves, tsunamis, sea ice, as well as ammunition and unused military equipment buried under water left over from the First and Second World Wars, also from the imposed war, which could impose a lot of potential human and financial risks due to explosions. In this paper, using the Abaqus finite element software, the dynamic response of a cylindrical tube buried in the sea subjected to the explosion is investigated applying numerical and experimental methods. Finite element models based on the experimental models were examined and the numerical results were compared with the experimental data. The results indicated that the maximum impact wave pressure, bubble propagation duration and displacement due to the cylinder deformation in the experimental and finite element analysis were well compatible