ANALYSIS OF BLAST SHOCK WAVES ON IMMERSED PIPES

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SHAH MOHAMMADI H.; MOHAMMADI SOHEYL

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Journal: Civil Engineering Infrastructures Journal Year:2010 | Volume:44 | Issue:1 Page(s): 61-72

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Title

ANALYSIS OF BLAST SHOCK WAVES ON IMMERSED PIPES

Author(s)

SHAH MOHAMMADI H. | MOHAMMADI SOHEYL | Issue Writer Certificate

Keywords

UNDERWATER EXPLOSIONQ3

FLUID-STRUCTURE INTERACTIONQ3

ACOUSTIC MEDIUMQ3

SHOCK WAVEQ2

Abstract

As a result of wide spread application of marine structures, especially in oil and gas industries, their safe design is of paramount importance. In this regard, explosion loading, which may result from accidents or military/ terrorist actions, should be considered, although they may not always be included in the final structural design. The impulsive nature of explosive loading, which comprises a high peak pressure followed by a relative fast decay, and complex phenomena of reflection of incident waves on flexible curved surfaces of a structure, leads to highly complicated analysis of UNDERWATER EXPLOSION. Detonation of a high explosive material under water produces two pressure pulses: a SHOCK WAVE which has a very short duration (about several ten to several hundred micro seconds) and a bubble pulse associated with the expansion of the products of detonation. Roles of the underwater SHOCK WAVE, flow and bubble in the damage process of structures are not as yet, clear. Only effects of the primary SHOCK WAVE generated from an explosion on circular and rectangular plate specimens and empty submerged cylinders are studied in this research. Effects of bed and water surfaces are not taken into account. The structure and its surrounding water are modeled by solid finite elements. They are attached to each other to enforce for coupling analysis. The water is bounded by nonreflecting boundaries to avoid unwanted reflections from the finite boundaries of the domain. Results of the numerical simulations are compared to the experimental data and the results obtained from available empirical relations.

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APA: Copy

SHAH MOHAMMADI, H., & MOHAMMADI, SOHEYL. (2010). ANALYSIS OF BLAST SHOCK WAVES ON IMMERSED PIPES. CIVIL ENGINEERING INFRASTRUCTURES JOURNAL (CEIJ) (JOURNAL OF FACULTY OF ENGINEERING), 44(1), 61-72. SID. https://sid.ir/paper/166632/en

Vancouver: Copy

SHAH MOHAMMADI H., MOHAMMADI SOHEYL. ANALYSIS OF BLAST SHOCK WAVES ON IMMERSED PIPES. CIVIL ENGINEERING INFRASTRUCTURES JOURNAL (CEIJ) (JOURNAL OF FACULTY OF ENGINEERING)[Internet]. 2010;44(1):61-72. Available from: https://sid.ir/paper/166632/en

IEEE: Copy

H. SHAH MOHAMMADI, and SOHEYL MOHAMMADI, “ANALYSIS OF BLAST SHOCK WAVES ON IMMERSED PIPES,” CIVIL ENGINEERING INFRASTRUCTURES JOURNAL (CEIJ) (JOURNAL OF FACULTY OF ENGINEERING), vol. 44, no. 1, pp. 61–72, 2010, [Online]. Available: https://sid.ir/paper/166632/en

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