COMPARISON OF SPH NUMERICAL MESHLESS METHOD WITH EULERIAN AND LAGRANGIAN APPROACH IN THE WATER EXPLOSION MODELING

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KARIMI FEREZGHI B.; NADERI R.

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Journal: Advanced Defense Science and Technology Year:2015 | Volume:6 | Issue:3 Page(s): 183-191

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Title

COMPARISON OF SPH NUMERICAL MESHLESS METHOD WITH EULERIAN AND LAGRANGIAN APPROACH IN THE WATER EXPLOSION MODELING

Author(s)

KARIMI FEREZGHI B. | NADERI R. | Issue Writer Certificate

Keywords

EXPLOSIONQ2

NUMERICAL MODELINGQ2

MESHLESS METHOD SPHQ2

EULERIAN AND LAGRANGIAN APPROACHQ2

LS-DYNAQ2

Abstract

There are major differences between the behavior of explosive and another loads due to the nature of the explosive charges and the small duration of shock loads. Study on underwater EXPLOSION effects is important for evaluation of damages caused by the terrorist activities such as hydraulic structures and marine docks, dams, transmission lines in the seabed and etc. The high cost of laboratory modeling and EXPLOSION risks due to blast loads and sudden and severe deformations caused by an explosive charges in a short time, justify the use of numerical methods. In this paper the experimental results were compared with grid base NUMERICAL MODELING (Eulerian and Lagrangian nature) and a meshless method (smooth particles hydrodynamics, called SPH). The numerical simulations are carried out based on the LS-DYNA software and the maximum distance from the center of the EXPLOSION pressure, pressure time history curves at different points, and changes in water level are compared in different numerical methods. The results show that, Lagrangian approach and meshless method presents higher EXPLOSION pressure than Eulerian approach. Also, using the meshless methods, the EXPLOSION pressure can be determined in closer distance to a charge center, compared to another grid base methods.

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APA: Copy

KARIMI FEREZGHI, B., & NADERI, R.. (2015). COMPARISON OF SPH NUMERICAL MESHLESS METHOD WITH EULERIAN AND LAGRANGIAN APPROACH IN THE WATER EXPLOSION MODELING. (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY, 6(3), 183-191. SID. https://sid.ir/paper/167577/en

Vancouver: Copy

KARIMI FEREZGHI B., NADERI R.. COMPARISON OF SPH NUMERICAL MESHLESS METHOD WITH EULERIAN AND LAGRANGIAN APPROACH IN THE WATER EXPLOSION MODELING. (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY[Internet]. 2015;6(3):183-191. Available from: https://sid.ir/paper/167577/en

IEEE: Copy

B. KARIMI FEREZGHI, and R. NADERI, “COMPARISON OF SPH NUMERICAL MESHLESS METHOD WITH EULERIAN AND LAGRANGIAN APPROACH IN THE WATER EXPLOSION MODELING,” (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY, vol. 6, no. 3, pp. 183–191, 2015, [Online]. Available: https://sid.ir/paper/167577/en

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