Energy, safety and process based simulation design method for explosive performance

Abstract

The application provides a kind of explosive performance simulation design method based on energy, safety and process, comprising: step one, the simulation model between the chemical composition of explosive formula and detonation velocity is established, that is, the energy performance simulation model of explosive formula;Step two, the simulation model between the sensitizing chemical group contained in explosive formula and impact sensitivity is established, that is, the safety performance simulation model of explosive formula;Step three, the simulation model between the average particle size of raw material in explosive formula and dynamic viscosity is established, that is, the process performance simulation model of explosive formula;Step four, on the basis of step one, step two and step three, the comprehensive performance characterization parameter is taken as the comprehensive processing result of explosive detonation velocity, explosive impact sensitivity and explosive dynamic viscosity, and the comprehensive performance simulation model of explosive formula is established.The simulation model construction method involved in the application has clear and distinct levels, the comprehensive performance characterization parameter is formed by linear weighting of detonation velocity, impact sensitivity and dynamic viscosity, so that the comprehensive performance of a group of explosive formulas with different component contents is analyzed and compared, and has a wide range of application.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mixed explosives, and relates to simulation calculation of explosive formula performance, in particular to an explosive performance simulation design method based on energy, safety and process. BACKGROUND

[0002] Weapon equipment mainly relies on its internal ammunition structure to play combat effectiveness. The ammunition structure is filled with various types of explosive charges. The quality of explosive charges is often related to the level of explosive preparation process. The determination and formation of an explosive preparation process often need a long time of groping and trying. When the material state of the explosive is slightly disturbed, and when the ammunition structure is slightly adjusted, in order to obtain high-quality explosive charge level, the explosive preparation process often needs to be adjusted adaptively. Such adjustment is often based on experience and is blind and uncertain to some extent. If the experimental method is used to study the variation law of the explosive preparation process parameters, the cost and cost are usually high and difficult to continue.

[0003] In order to improve the design level of explosive preparation process and timely change the research idea of explosive preparation process, simulation technology needs to be introduced to calculate and study the explosive preparation process. The kneading process is often involved and important in the explosive preparation process. The explosive material used in the actual process usually has high viscosity. The change law of the explosive material properties in the kneading process is not clear. Simulation of the process can give valuable regularity enlightenment. Therefore, a high-viscosity explosive material kneading process simulation model construction method needs to be invented.

[0004] The prior art discloses a high gony energy melt-cast explosive, and provides a high gony energy DNTF-based melt-cast explosive formula design method. However, the invention does not involve comprehensive optimization design of explosive formula performance. SUMMARY

[0005] In view of the deficiencies in the prior art, the purpose of the present application is to provide an explosive performance simulation design method based on energy, safety and process, which solves the technical problem that the comprehensive performance design capability of the explosive formula of the simulation design method in the prior art needs to be further improved.

[0006] In order to solve the above technical problems, the technical scheme is adopted as follows:

[0007] An explosive performance simulation design method based on energy, safety and process, characterized in that the method comprises the following steps:

[0008] Step 1: Construction of explosive formula energy performance simulation model:

[0009] The simulation model of the energy performance of the explosive formula is established by taking the detonation velocity of the explosive as a characterization parameter of the energy performance of the explosive formula.

[0010] Step two, the simulation model of the safety performance of the explosive formula is constructed:

[0011] The simulation model of the safety performance of the explosive formula is established by taking the impact sensitivity of the explosive as a characterization parameter of the safety performance of the explosive formula.

[0012] Step three, the simulation model of the process performance of the explosive formula is constructed:

[0013] The simulation model of the process performance of the explosive formula is established by taking the dynamic viscosity of the explosive as a characterization parameter of the process performance of the explosive formula.

[0014] Step four, the simulation model of the comprehensive performance of the explosive formula is constructed:

[0015] The simulation model of the comprehensive performance of the explosive formula is established by taking the comprehensive processing result of the detonation velocity, the impact sensitivity and the dynamic viscosity of the explosive as a comprehensive performance characterization parameter on the basis of steps one, two and three.

[0016] Compared with the prior art, the present application has the following technical effects:

[0017] (I) The simulation model construction method of the present application has clear ideas and distinct levels, and comprehensively considers the comprehensive performance of the explosive formula from the energy performance, the safety performance and the process performance, and forms a comprehensive performance characterization parameter through linear weighting of the detonation velocity, the impact sensitivity and the dynamic viscosity, so that the comprehensive performance of a group of explosive formulas with different component contents can be analyzed and compared, and the present application has a wide application range.

[0018] (II) In the present application, the energy performance of the explosive formula reflects the energy release characteristics and the external work capacity in the detonation process of the explosive. There are various parameters and indexes to characterize the energy characteristics of the explosive formula. In the present application, the detonation velocity is mainly used as a characterization parameter of the energy performance of the explosive formula, and has the advantages of clear source, convenient calculation, strong indication and good correlation.

[0019] (III) In the present application, the safety performance of the explosive formula reflects the degree of chemical reaction of the explosive when it is stimulated by the outside world. The evaluation and characterization of the safety performance of the explosive formula involves the comprehensive action of many factors. In the present application, the impact sensitivity is mainly used as a characterization parameter of the safety performance of the explosive formula, and has the advantages of simplicity, intuition and easy comparison.

[0020] (IV) In the present application, the process performance of explosive formula reflects the flow characteristics of slurry in the preparation process of explosive. In the actual operation process, there are various parameters to evaluate the process performance of explosive formula. The present application mainly uses dynamic viscosity as the characterization parameter of the process performance of explosive formula, which has the advantages of simplicity, clarity and strong correlation.

[0021] The specific content of the present application is further explained and described in detail below in combination with embodiments. DETAILED DESCRIPTION

[0022] It should be noted that all raw materials in the present application, unless otherwise specified, are all known raw materials in the prior art.

[0023] It should be noted that in the present application, it should be noted that in the present application, the International System of Units (SI) can be used as the main unit system, and some parameters are recommended to use other commonly used derived unit systems. The unit of explosive detonation velocity can use mm / μs or m / s; the unit of explosive impact sensitivity can use cm; the unit of explosive dynamic viscosity can use mPa·s. The unit system of the rest of the physical quantities not pointed out can follow the commonly used conventions.

[0024] The general inventive concept of the present application is to quantitatively characterize the performance of explosive formula from multiple angles, analyze and compare the comprehensive performance of explosive formula with different component contents, and form a comprehensive performance simulation design model of high-energy explosive formula. The present application can be roughly summarized into two aspects when implemented: one is the selection of multiple measurement angles of explosive formula performance and the construction of quantitative simulation model; the other is the comprehensive processing based on multiple measurement angles to analyze and compare the comprehensive performance of a group of explosive formula.

[0025] The following gives specific embodiments of the present application, it should be noted that the present application is not limited to the following specific embodiments, any equivalent transformation made on the basis of the technical solutions of the present application falls within the protection scope of the present application.

[0026] Embodiment:

[0027] The present embodiment gives a kind of explosive performance simulation design method based on energy, safety and process, which comprises the following steps:

[0028] Step one, explosive formula energy performance simulation model construction:

[0029] Taking the detonation velocity of explosive as the characterization parameter of the energy performance of explosive formula, the simulation model between the chemical composition of explosive formula and the detonation velocity is established, i.e. the energy performance simulation model of explosive formula.

[0030] In step one, the expression of the energy performance simulation model of explosive formula is:

[0031]

[0032] wherein:

[0033] D represents the detonation velocity of the explosive, in mm / μs;

[0034] Φ represents an indicative number of the energy performance of the explosive formulation;

[0035] ρ0 represents the density of the explosive formulation, in g / cm 3 ;

[0036] N represents the amount of substance of the detonation products generated by the explosive formulation upon detonation, in mol / g;

[0037] M represents the average molar mass of the detonation products generated by the explosive formulation upon detonation, in g / mol;

[0038] Q represents the heat of reaction of the explosive formulation upon detonation, in J / g.

[0039] In this example, for an explosive formulation whose chemical composition is represented as C a H b N c O d Al e , when the oxygen content in the formulation is limited, first all the aluminum elements are oxidized to form Al2O3; second, all the hydrogen elements are oxidized to form H2O; when there is remaining oxygen, a part of the carbon elements is oxidized to form CO2; and the remaining carbon elements exist in the form of solid graphite. Thus, the chemical reaction equation of the explosive formulation whose chemical composition is represented as C a H b N c O d Al e can be obtained as follows:

[0040]

[0041] Thus, the calculation expressions of N, M and Q can be obtained as follows:

[0042] The calculation expression of the parameter N is:

[0043] The calculation expression of the parameter m is:

[0044] The calculation expression of the parameter q is:

[0045] The technical advantage of the step is that the energy performance of the explosive formula reflects the energy release characteristics and external work ability in the explosion process of the explosive. There are various different parameters and indexes to characterize the energy characteristics of the explosive formula. In the application, the detonation velocity is mainly used as the characterization parameter of the energy performance of the explosive formula, which has the advantages of clear source, convenient calculation, strong indication and good correlation.

[0046] Step two, construction of the simulation model of the safety performance of the explosive formula:

[0047] The simulation model between the sensitizing chemical groups contained in the explosive formula and the impact sensitivity is established by taking the impact sensitivity of the explosive as the characterization parameter of the safety performance of the explosive formula, that is, the simulation model of the safety performance of the explosive formula.

[0048] In step two, the expression of the simulation model of the safety performance of the explosive formula is:

[0049] ln(H 50 )=k0+k1SG+k2SG 2 Formula III.

[0050] In the formula:

[0051] H 50 represents the impact sensitivity of the explosive, and the unit is cm;

[0052] ln() represents the natural logarithm function;

[0053] SG represents the number of sensitizing chemical groups;

[0054] k0, k1 and k2 all represent model fitting parameters.

[0055] In step two, the sensitizing chemical groups include C-NO2, N-NO2, O-NO2, azole groups and furazan groups.

[0056] In the embodiment, according to the component content of various raw materials and the structural formula of the main explosive, the explosive formula with chemical composition represented as C a H b N c O d Al e is calculated, and the number of sensitizing chemical groups SG is calculated, and then the model fitting parameters k0, k1 and k 22 are combined to be substituted into Formula III to obtain the calculation result of the impact sensitivity of the explosive.

[0057] The technical advantage of the step is that the safety performance of the explosive formula reflects the degree of chemical reaction of the explosive when it is stimulated by the outside world. The evaluation and characterization of the safety performance of the explosive formula involve the comprehensive action of many factors. In the application, the impact sensitivity is mainly used as the characterization parameter of the safety performance of the explosive formula, which has the advantages of simplicity, intuition and easy comparison.

[0058] Step three, explosive formulation process performance simulation model construction:

[0059] Taking the dynamic viscosity of the explosive as a characterization parameter of the process performance of the explosive formulation, a simulation model between the average particle size of the raw material in the explosive formulation and the dynamic viscosity is established, that is, the simulation model of the process performance of the explosive formulation.

[0060] In step three, the expression of the simulation model of the process performance of the explosive formulation is:

[0061]

[0062] In the formula:

[0063] η represents the dynamic viscosity of the explosive, and the unit is mPa·s;

[0064] i represents the sequence number of the type of the raw material;

[0065] n represents the number of types of the raw material;

[0066] χ i represents the average particle size of the i-th raw material, and the unit is μm;

[0067] m i represents the mass percentage content of the i-th raw material;

[0068] p0 and p i both represent model fitting parameters.

[0069] In this embodiment, according to the average particle size of various raw materials in the explosive formulation, combined with the mass percentage content m i of the raw material and the model fitting parameters p0 and p i , the dynamic viscosity calculation result of the explosive formulation is obtained by substituting into formula IV.

[0070] The technical advantage of this step is that the process performance of the explosive formulation reflects the flow characteristics of the slurry in the explosive preparation process. In the actual operation process, there are various parameters to evaluate the process performance of the explosive formulation. The dynamic viscosity is mainly used as a characterization parameter of the process performance of the explosive formulation in the present application, which has the advantages of simplicity, clarity and strong correlation.

[0071] Step four, explosive formulation comprehensive performance simulation model construction:

[0072] On the basis of step one, step two and step three, the comprehensive performance simulation model of the explosive formulation is established by taking the comprehensive processing results of the detonation velocity of the explosive, the impact sensitivity of the explosive and the dynamic viscosity of the explosive as the comprehensive performance characterization parameters.

[0073] In step four, the expression of the simulation model of the comprehensive performance of the explosive formulation is:

[0074]

[0075] wherein:

[0076] X i represents a characteristic parameter of energy performance of explosive formulation, a characteristic parameter of safety performance of explosive formulation, or a characteristic parameter of process performance of explosive formulation;

[0077] i represents a serial number of a characteristic parameter of energy performance of explosive formulation, a characteristic parameter of safety performance of explosive formulation, and a characteristic parameter of process performance of explosive formulation, i = 1, 2, 3;

[0078] X i,max represents a maximum value in a characteristic parameter of energy performance of explosive formulation, a characteristic parameter of safety performance of explosive formulation, or a characteristic parameter of process performance of explosive formulation;

[0079] X i,min represents a minimum value in a characteristic parameter of energy performance of explosive formulation, a characteristic parameter of safety performance of explosive formulation, or a characteristic parameter of process performance of explosive formulation;

[0080] X i represents a conversion parameter of a characteristic parameter of energy performance of explosive formulation, a characteristic parameter of safety performance of explosive formulation, or a characteristic parameter of process performance of explosive formulation;

[0081] CCP represents a comprehensive performance characteristic parameter of explosive formulation;

[0082] ω0 and ω i represent model fitting parameters.

[0083] Application Example:

[0084] The application example gives an energy, safety and process based explosive performance simulation design method based on the above-mentioned embodiment, which analyzes and compares the comprehensive performance of a group of explosive formulations mainly based on octogen (HMX).

[0085] In the application example, the raw materials in the explosive formulation composition include octogen (HMX), aluminum powder (Al), hydroxyl-terminated polybutadiene (HTPB) and dioctyl adipate (DOA). The detailed information of the formulation composition is shown in Table 1.

[0086] Table 1 Detailed information of formulation composition

[0087]

[0088] Using the detailed information given in Table 1 above as input, the model parameters used are shown in Table 2, and the performance simulation design method based on energy, safety and process of explosives provided by the above examples is used to calculate the detonation velocity, impact sensitivity and dynamic viscosity of a group of explosive formulations with HMX as the main explosive. The performance calculation results of the explosive formulations are shown in Table 3. Then the comprehensive performance characterization parameters of this group of explosive formulations are compared.

[0089] Table 2 Model parameters used in the application example

[0090]

[0091]

[0092] Table 3 Performance calculation results of explosive formulations

[0093]

[0094] From the results in Table 3, for the group of explosive formulations with HMX as the main explosive in this application example, considering the energy performance, safety performance and process performance of the explosive formulations, the comprehensive performance characterization parameters are compared, and the formulation with serial number a4 has better comprehensive performance.

Claims

1. An energy, safety and process based explosive performance simulation design method, characterized in that, The method comprises the following steps: Step one, explosive formula energy performance simulation model construction: Take the detonation velocity of explosive as the characterization parameter of the energy performance of explosive formula, and establish a simulation model between the chemical composition of explosive formula and the detonation velocity, which is the simulation model of the energy performance of explosive formula; Step two, explosive formula safety performance simulation model construction: Take the impact sensitivity of explosive as the characterization parameter of the safety performance of explosive formula, and establish a simulation model between the sensitizing chemical groups contained in the explosive formula and the impact sensitivity, which is the safety performance simulation model of explosive formula; Step three, explosive formula process performance simulation model construction: Take the dynamic viscosity of explosive as the characterization parameter of the process performance of explosive formula, and establish a simulation model between the average particle size of raw materials in explosive formula and the dynamic viscosity, which is the process performance simulation model of explosive formula; Step four, explosive formula comprehensive performance simulation model construction: On the basis of step one, step two and step three, take the comprehensive processing results of explosive detonation velocity, explosive impact sensitivity and explosive dynamic viscosity as the comprehensive performance characterization parameter, and establish the comprehensive performance simulation model of explosive formula.

2. The energy, safety and process based explosive performance simulation design method of claim 1, wherein, In step one, the expression of the explosive formula energy performance simulation model is: In the formula: D represents the detonation velocity of explosive; Φ represents the indicative number of explosive formula energy performance; ρ0 represents the density of explosive formula; N represents the amount of substance of the detonation product generated when the explosive formula detonates; M represents the average molar mass of the detonation product generated when the explosive formula detonates; Q represents the heat of reaction when the explosive formula detonates.

3. The energy, safety and process based explosive performance simulation design method of claim 1, wherein, In step two, the expression of the explosive formula safety performance simulation model is: ln(H 50 ) = k0+k1SG+k2SG 2 Equation III; In the formula: H 50 represents the impact sensitivity of the explosive; ln() represents the natural logarithm function; SG represents the number of sensitizing chemical groups; k0, k1 and k2 all represent model fitting parameters.

4. The energy, safety and process based explosive performance simulation design method of claim 1, wherein, In step three, the expression of the explosive formula process performance simulation model is: In the formula: η represents the dynamic viscosity of explosive; i represents the serial number of the type of raw material; n represents the number of types of raw materials. χ i Xi represents the average particle diameter of the i-th raw material; m i m represents the mass percentage content of the i-th raw material; p0 and p i both represent model fitting parameters.

5. The energy, safety and process based explosive performance simulation design method as claimed in claim 1, wherein, In step four, the expression of the explosive formula comprehensive performance simulation model is: In the formula: X i a characterization parameter indicative of an energy performance of the explosive formulation, a characterization parameter indicative of a safety performance of the explosive formulation, or a characterization parameter indicative of a process performance of the explosive formulation; i represents the serial number of the characterization parameter of the energy performance of explosive formula, the characterization parameter of the safety performance of explosive formula and the characterization parameter of the process performance of explosive formula, i = 1, 2, 3; X i,max a maximum value of the characteristic parameter representing the energy performance of the explosive formulation, of the characteristic parameter representing the safety performance of the explosive formulation, or of the characteristic parameter representing the process performance of the explosive formulation; X i,min a minimum of the characteristic parameter representing the energy performance of the explosive formulation, the characteristic parameter representing the safety performance of the explosive formulation, or the characteristic parameter representing the process performance of the explosive formulation; X i X represents a conversion parameter of a characterizing parameter of the energy performance of the explosive formulation, of a characterizing parameter of the safety performance of the explosive formulation or of a characterizing parameter of the process performance of the explosive formulation; CCP represents the comprehensive performance characterization parameter of explosive formula; ω0 and ω i denotes the model fitting parameters.

6. The energy, safety and process based explosive performance simulation design method as claimed in claim 1, wherein, In step two, the sensitizing chemical groups include: C-NO2, N-NO2, O-NO2, azole groups and furazan groups.

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