Dynamic load applied using JWL equation of state for 2D axisymmetric models having 100 mm blasthole diameter in elasto-plastic rock obeying metal plasticity rules. Volumetric strain (scalar quantity) apportioned by statistical fracture mech principals used for fractures representation. [Pg.205]

In this simulation, three kinds of equation of state, linear, shook, JWL, and Compaction are applied. [Pg.227]

Where A, B, Rj and are material constants in JWL equation of state, P = the pressure of detonation products, V = the specific volume and E = initial value of the specific energy. [Pg.999]

Miller, P.J., and Carlson, K.E. Determination JWL Equation of State Parameters Using the Gurney Equation Approximation, 9th Symposium (Intmiational) on Detonation, Portland, MD, 1989, pp. 930-936. [Pg.220]

Figure 5.18. Flowchart of possible calculation procedure to obtain parameters in the JWL equation of state |

All reactive flow models require as a minimum two equations of state, one for the unreacted explosive and one for its reaction products a reaction rate law for the conversion of explosive to products and a mixture rule to calculate partially reacted states in which both explosive and products are present. The Ignition and Growth reactive flow model [60] uses two Jones-Wilkins-Lee (JWL) equations of state, one for the unreacted explosive and another one for the reaction products, in the temperature dependent form [Pg.506]

Besides, on the basis of the cylinder test data, if the detonation parameters at the CJ point as the initial point of the products expansion are known, it is possible to deduce constants in the Jones-Wilkins-Lee equation (known as JWL equation of state) of the detonation products isentropic expansion. [Pg.190]

Experimental method to measure the effectiveness of an explosive. The radial expansion on detonation of a metallic cylinder (usually copper) filled with a high explosive is observed. A streak camera or a laser method might be used. The detonation velocity is determined simultaneously, using for example time-of-arrival pins. The -> Equation of State (EOS) which is often the Jones-Wilkins-Lee (JWL) EOS of the detonation products is derived using Gurney theory. [Pg.69]

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