31 results about "TNT equivalent" patented technology

The invention relates to an explosion driver for a large explosive wave simulator. The explosion driver for the large explosive wave simulator comprises a driving tube (4), an adapter (5), a buffering counter-recoil machine (1), a roller support (3) and a buffering counter-recoil machine bracket (2), wherein the driving tube (4) is in a cavity structure of which the front end is open and the rear end is closed; the rear part of the driving tube (4) is supported on the roller support (3), the adapter (5) is sheathed at the front part of the driving tube (4), the buffering counter-recoil machine (1) is fixed on the buffering counter-recoil machine bracket (2), and the buffering counter-recoil machine bracket (2) and the roller support (3) are fixed on a reinforced concrete base. The explosion driver has the characteristics of high explosion equivalent, strong buffer ability, high resetting precision, good sealing and damping effects, and repeatability for use, and has important significance for research of explosive shock wave characteristic, engineering structure, weaponry anti-explosion property and the like.

The invention discloses a method for evaluating environmental adaptability of explosion disasters of electric appliance emergency equipment. The evaluation method comprises the following specific evaluation steps of explosion disaster accidents and emergency equipment field data information being obtained; a TNT equivalent method being used for obtaining the TNT equivalent of the explosion disaster accident; acquiring an overpressure value borne by the emergency equipment according to an overpressure formula; according to an overpressure criterion and a similarity law, determining experiment parameters of the explosive quantity and the explosion distance of the experiment platform; determining performance evaluation indexes of the emergency equipment from national standards according to vulnerability and importance principles, determining evaluation index layering and index weights by an analytic hierarchy process, and determining the adaptive capacity of the emergency equipment facingan explosion disaster environment by a fuzzy mathematical method according to an experimental result, namely the performance damage condition of the emergency equipment. According to the method provided by the invention, an experiment platform can be adopted to evaluate the damage condition of the electric appliance emergency equipment in the explosion disaster environment, and then a fuzzy mathematics comprehensive evaluation method is adopted to evaluate the adaptive capacity of the electric appliance emergency equipment in the actual explosion disaster environment.

The invention provides an electronic detonator underwater explosive power testing device based on water hammer wave signals. During testing, an open and safe water area is selected; the testing device is assembled, an electronic detonator and an underwater shock wave sensor are arranged in an annular frame, and a detonating circuit and a signal receiving circuit are connected; the connection condition of the device is checked, and the testing device is placed in the water area after it is determined that no problem exists; the electronic detonator is detonated, the water hammer wave signals are collected through a sensor, a P-t curve is obtained, and parameters such as the underwater explosive shock wave pressure peak value are obtained; and the TNT equivalent value of the tested electronic detonator is calculated. The device is developed on the basis of the water hammer wave signals, the interference of environmental noise is small, the testing precision is high, no noise is generated in the testing process, the device is environmentally friendly and free of pollution, in addition, fragments generated after the detonator is detonated in water cannot fly into the air, no threat is caused to surrounding persons, safety and reliability are achieved, and the testing requirements under different water depth conditions can be met.

The invention relates to a testing cable sealing device for a container for simulating a deepwater environment explosion test. According to the technical scheme, two to fifteen cable holes (8) are formed around the center of a flange cover plate (1) and located in a protection cover (2); each cable hole (8) is a through hole which is formed by three sections, the hole diameter of the upper portion is larger than the hole diameter of the lower portion, a sprue (7), sealant (6) and a ring washer (5) are concentrically arranged on the middle section of each cable hole (8) from bottom to top, each compression bolt (4) is fixedly connected with the upper section of the corresponding cable hole (8) through threads, and the lower end of each compression bolt (4) is tightly pressed on the upper plane of the corresponding ring washer (5); a testing cable (3) sequentially penetrates through the protection cover (2), the corresponding compression bolt (4), the corresponding ring washer (5), the corresponding sealant (6) and the lower section of the corresponding cable hole (8) to be connected with an underwater impact wave pressure sensor. The testing cable sealing device is high in compression resistance, good in sealing performance, easy to assemble, wide in application range, and capable of meeting the requirement for simulating the 0.01-Kg TNT equivalent explosion test at the 200 m underwater environment.

The invention relates to a pourable high-energy insensitive explosive and a preparation method thereof. Aiming at the problem of low energy level of traditional butylated hydroxyl poured PBX explosives, the present invention introduces an energetic binder and an energetic plasticizer as a binder system. By adding High-energy explosive and metal fuel components, the prepared pouring type PBX explosive has higher energy characteristics, and the density of the explosive formula is greater than 1.85g / cm 3 , the detonation velocity is greater than 7800m / s, and the explosive power is more than 1.9 times the equivalent of TNT. At the same time, the explosive formula has good low fragility, especially the mild reaction during the slow cook-off test, and the reaction level does not exceed deflagration.

The invention discloses a test method and system for the mass distribution of warhead fragments. By combining the penetration condition of the high-speed fragment group produced by the explosion of the warhead to be tested on the target plate with the fragment scattering angle and speed obtained through the test, the Obtaining the mass distribution of fragments not only solves the problem that it is difficult to directly obtain the mass distribution of fragments of a warhead with a large size and a large TNT equivalent explosive inside through experiments; at the same time, it realizes the scattering angle and velocity distribution of fragments can be obtained in a single experiment , effectively improving the test efficiency and saving a lot of manpower, material and financial resources.

The invention discloses a vibration speed prediction method for foundation pit static blasting close to structures. The method includes: adopting a genetic neural network to predict vibration speed ina static blasting influence range, to be more specific, taking GSI (geological strength index), rock hardness degree mi, rock disturbing degree D, explosive load G and distance b between explosive load holes and nearby structures or pipelines as input parameters, acquiring sample input parameter distribution on the basis of an orthogonal design principle, and adopting a TNT equivalent method forequivalence of a liquid carbon dioxide rock breaking device into a TNT explosive model to further adopt LS-DYNA software for calculating to generate sample output parameters, adopting a training sample set to train the genetic neural network to obtain a mapping relation between the input parameters and the output parameters, and adopting the mapping relation to realize practical vibration speed prediction in engineering.

Embodiments of the present invention provide a method and device for evaluating the damage effect of an explosion shock wave. By obtaining environmental model parameters and human body model parameters, and obtaining the explosive category, explosive name and explosive quality, according to the explosive category, explosive name and Calculate the mass of the explosive to obtain the TNT equivalent of the explosive, and obtain the radius of the explosive according to the TNT equivalent of the explosive; input the environmental model parameters, human body model parameters and the radius of the explosive into the K file of the ANSYS / LS-DYNA software to obtain Target calculation file; then call ANSYS / LS-DYNA software to calculate the target calculation file according to the total time of calculation and solution and the number of ANSYS / LS-DYNA cores, and evaluate the damage level of each part of the human body according to the calculation results. The method and device can automatically create and obtain different explosion environments according to parameterized settings, are used to simulate human body damage in different explosion environments, and can intuitively, accurately and efficiently evaluate the damage to the human body caused by blast shock waves.

The invention discloses a method for estimating the source term of conventional explosion radioactive aerosol diffusion, comprising the following steps: aiming at the conventional explosion of radioactive substances on the ground, estimating the explosion equivalent, and estimating the size of the explosion smoke cloud based on the explosion equivalent, and the size of the explosion smoke cloud includes: The height of the explosion smoke cloud, the radius of the explosion smoke cloud, the volume of the explosion smoke cloud, and the density of the explosion smoke cloud, estimate the proportion of the explosion aerosol and the particle size distribution of the aerosol, estimate the impact of the heavy gas effect on the source term, and set the explosion event Nuclides of concern. This method is based on the explosion equivalent, explosive mass, and local wind speed, and comprehensively considers the size of the explosion smoke cloud, the proportion of the explosion aerosol, the particle size distribution of the aerosol, and the influence of the heavy gas effect on the source item to form a source item estimation method. , which is more in line with the actual situation, and the effect is better than that of the point source diffusion model.

The invention discloses a warhead fragment mass distribution test method and system. The penetration condition of a target plate caused by a high-speed fragment group generated by the explosion of a to-be-tested warhead obtained through a test is combined with a fragment scattering angle and speed, and the mass distribution of fragments is obtained through fitting, so that the problem that the mass distribution of the fragments of the large-size warhead filled with the explosive with the large TNT equivalent is difficult to directly obtain through the test is solved; and meanwhile, the flying angle and speed distribution of the fragments can be obtained through a single experiment, so that the test efficiency is effectively improved, and a large amount of manpower, material resources and financial resources are saved.