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Heterogeneous Explosives Experimentally Investigated and Analyzed by Lagrange Analysis Method in Two Demsions Production Process

Author: JiangGuoPing
Tutor: ZuoShi
School: Hunan University
Course: Solid Mechanics
Keywords: Shock initiation Dynamite Equation of state Numerical Simulation
CLC: O381
Type: Master's thesis
Year: 2004
Downloads: 186
Quote: 2
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Abstract


Experiments Lagrangian analysis methods and numerical simulation of shock initiation of solid explosives process research, through experimental studies shockwave grow into a detonation wave or shock wave attenuation explosive by the Lagrangian reaction rate equation parameters analysis method explosives, which set up the experiment and numerical simulation of the bridge, through the numerical simulation of shock initiation of solid explosives process, and to compare the results obtained by the simulation and experimental results, to verify simulation Lagrangian analysis is correct. In this paper, the various aspects have made some progress. On the experimental side: the experiment which uses advanced two-dimensional Laplace sensor, using the two-dimensional Laplace experimental methods, in fact, the use of the clapboard experimental method as a loading system, the use of state-of-the-art two-dimensional Lagrangian measured test pieces of detonating, and extinguished process. Substantially overcomes the deficiencies of the above-mentioned one-dimensional method. Lagrange analysis: In this paper, a small clapboard the coarse cladding TNT trial, coarse particles cladding of TNT detonating and extinguished two states of Lagrange analysis, and the two states, the same in JWL model reaction rate equation of the equation and the ignition growth the the Lagrange analysis methods completeness - calibration parameters applicable to the various states of the same kind of explosives. JWL equation of state-based solid explosive ignition growth model reaction rate equation using Lagrange analysis method to calibrate the parameters. JWL equation of state parameters and reaction rate equation calculated parameters can be used directly for the finite element program DYNA3D, is widely used to set up a bridge between the experimental and theoretical models and numerical simulation. First analysis of the quenching process, under the shock wave in the explosives can be seen from the calibration response curve is the shock wave in the extinguishing process, there are still measured explosives local chemical reaction. : Is-dyna numerical simulation program, this article by Lagrange analysis ignition parameters of the growth model of shock initiation process simulation results with experimental results agree well. To verify the calibration parameters of practicality, the Lagrangian analysis can set up the simulation and experimental bridge for shock initiation workers find a research method.

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CLC: > Mathematical sciences and chemical > Mechanics > Explosion > Knock ( detonation ) theory
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