Calibration and validation of high explosives equations of state with an experimental cylinder test database

Determination of detonation products equation of state from cylinder test: Analytical model and numerical analysis

Thermal Science ◽

10.2298/tsci121029138e ◽

2015 ◽

Vol 19 (1) ◽

pp. 35-48 ◽

Cited By ~ 15

Author(s):

Predrag Elek ◽

Vesna Dzingalasevic ◽

Slobodan Jaramaz ◽

Dejan Mickovic

Keyword(s):

Equation Of State ◽

Analytical Model ◽

Element Model ◽

Detonation Products ◽

High Explosives ◽

Cylinder Test ◽

Proposed Model ◽

Numerical Finite Element ◽

Abaqus Model

Contemporary research in the field of explosive applications implies utilization of hydrocode simulations. Validity of these simulations strongly depends on parameters used in the equation of state for high explosives considered. A new analytical model for determination of Jones-Wilkins-Lee (JWL) equation of state parameters based on the cylinder test is proposed. The model relies on analysis of the metal cylinder expansion by detonation products. Available cylinder test data for five high explosives are used for the calculation of JWL parameters. Good agreement between results of the model and the literature data is observed, justifying the suggested analytical approach. Numerical finite element model of the cylinder test is created in Abaqus in order to validate the proposed model. Using the analytical model results as the input, it was shown that numerical simulation of the cylinder test accurately reproduces experimental results for all considered high explosives. Therefore, both the analytical method for calculation of JWL equation of state parameters and numerical Abaqus model of the cylinder test are validated.

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Finite-Element Modelling of Multi-Planar Offshore Tubular Joints

Journal of Offshore Mechanics and Arctic Engineering ◽

10.1115/1.1643388 ◽

2004 ◽

Vol 126 (1) ◽

pp. 120-128 ◽

Cited By ~ 3

Author(s):

Marcus M. K. Lee ◽

Ellen M. Dexter

Keyword(s):

Finite Element ◽

Parametric Study ◽

Finite Element Modelling ◽

International Organization ◽

Element Modelling ◽

Calibration And Validation ◽

Tubular Joints ◽

Modelling Procedure ◽

Test Database

This paper describes the calibration and validation of a finite-element modelling procedure that was used to conduct an extensive parametric study on the strength of multi-planar tubular joints. Various factors that influenced results were investigated. The modelling procedure was calibrated using the International Organization for Standards (ISO) design equations and the underlying test database for compression and tension loaded simple T and Y joints, and was further validated with balanced loaded K joints. Overall, the proposed procedure has been shown to be adequate in predicting the strength of the basic joint types, thereby giving confidence in its use for more complex joints.

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Uncertainty Quantification in High Explosives Equations of State

10.2172/1812650 ◽

2021 ◽

Author(s):

Noah Lordi ◽

Jonathan Lindbloom

Keyword(s):

Uncertainty Quantification ◽

Equations Of State ◽

High Explosives

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Verification of a Specialized Hydrodynamic Simulation Code for Modeling Deflagration and Detonation of High Explosives

Journal of Verification Validation and Uncertainty Quantification ◽

10.1115/1.4053340 ◽

2021 ◽

Author(s):

Stephen Andrews ◽

Tariq Aslam

Keyword(s):

Chemical Reactions ◽

Thermal Conduction ◽

Equations Of State ◽

Computationally Efficient ◽

Physical Processes ◽

High Explosives ◽

Simulation Code ◽

Hydrodynamic Simulation ◽

Rate Laws ◽

Unsteady Problems

Abstract A specialized hydrodynamic simulation code has been developed to simulate one-dimensional unsteady problems involving the detonation and deflagration of high explosives. To model all the relevant physical processes in these problems, a code is required to simulate compressible hydrodynamics, unsteady thermal conduction and chemical reactions with complex rate laws. Several verification exercises are presented which test the implementation of these capabilities. The code also requires models for physics processes such as equations of state and conductivity for pure materials and mixtures as well as rate laws for chemical reactions. Additional verification tests are required to ensure these models are implemented correctly. Though this code is limited in the types of problems it can simulate, its computationally efficient formulation allow it to be used in calibration studies for reactive burn models for high explosives.

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