Cylindrical blast waves in soils

Vovk, A. A.; Luchko, I. A.; Lyakhov, G. M.; Plaksii, V. A.; Remez, N.

doi:10.1007/bf00910203

Cited by 11 publications

(12 citation statements)

References 2 publications

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“…To examine the above procedure for the incident wave propagation, a comparison with available experimental results [33] of an explosion in clay loam has been carried out. The blast wave is generated by an explosion of an explosive-line charge of TNT with an initial radius of…”

Section: Comparison With Experimental Data: Buried Cylindrical Chargementioning

confidence: 99%

Underground explosion of a cylindrical charge near a buried wall

Yankelevsky

Feldgun

Karinski

2008

International Journal of Impact Engineering

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Section: Comparison With Experimental Data: Buried Cylindrical Chargementioning

confidence: 99%

Underground explosion of a cylindrical charge near a buried wall

Yankelevsky

Feldgun

Karinski

2008

International Journal of Impact Engineering

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“…To demonstrate the applicability of the present approach some comparisons with known experimental results have been carried out. The first example deals with the pressure attenuation on the front of a cylindrical wave caused by TNT line charge explosion in wet clay with the following parameters [45]: The initiation explosive pressure is p H = 9600 MPa [40]. The resulting time-dependent pressure in the explosive cavity, p D (t), is calculated due to numerical simulation using the isentropic law for the detonation products expansion (polytrophic form): 3 , in which the detonation product density, r D is obtained according to the conservation of charge mass law: (7) where A D is the charge cross-section area.…”

Section: Validation Of the Numerical Proceduresmentioning

confidence: 99%

Blast Pressure Distribution on a Buried Obstacle in a Porous Wet Soil

Feldgun

Karinski

Yankelevsky

2011

International Journal of Protective Structures

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The paper presents a comprehensive approach to simulate the blast pressure distribution on a rigid or flexible planar or curved obstacle buried in a porous soil medium. The Lyakhov three-phase model is adopted to take into account the volumetric components of the soil medium (air, water, and solid matrix) and their properties, in the formulation of all the branches of the equation of state that simulates the soil. The present approach considers both the bulk and the shear elastic-plastic behavior, including the effect of soil pressure on the yield strength for the stress tensor deviator. Both Godunov and the variational-difference methods are applied to solve the problem of blast wave propagation within the soil medium. An example problem of an explosion in a porous medium is presented, and the analysis of the soil-obstacle interaction under the blast action using the proposed method shows good correspondence with available experimental results. The pressure distribution along the envelope of a rigid obstacle has been investigated for different standoff distances of the explosive from the obstacle as well as for different levels of soil water contents up to saturation. In addition, the plane problems of blast response of a thin-walled lining that is buried in this medium has been studied for different levels of water content and the lining's extreme deformation including its dynamic buckling under the blast high pressures was investigated.

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“…To examine the above procedure, a comparison with available experimental results [48] of an explosion in a saturated clay has been carried out. The blast loading results from an explosion of an explosive-line charge of TNT with a radius of R E ¼ 0.01 m. The porous soil properties (see Eq.…”

Section: Comparison With Experimental Data: Explosion In a Porous Mediummentioning

confidence: 99%

“…(48), (49) and (59) are solved together using a simple iteration method. The shell velocity u nÀ1=2 x at the previous time step is chosen as the initial estimate.…”

Section: Definition Of the Soil-lining Contact Pressurementioning

confidence: 99%