6 results about "TNT equivalent" patented technology

The application provides a double-V lightning protection structure and a manufacturing method thereof, and relates to the field of lightning protection structures.The lightning protection structure comprises two groups of connecting bases symmetrically arranged at the bottom of a fixed base; and a blast-facing main explosion-proof plate is arranged at the bottom of the fixed base. The blast-facing main explosion-proof plate is arranged to finely realize the defense function of each functional layer of the lightning protection structure composed of the blast-facing main explosion-proof layer, the pressure relief gap and the back functional layer. Even after being subjected to a higher TNT equivalent explosion impact, the back functional layer can still maintain good integrity, thereby solving the problems that the single-layer deep V structure has a large size in the height direction, which increases the gravity center of the whole vehicle and affects the high-speed driving safety and the passability on complex roads. Moreover, when the commonly used lightning protection structure is installed, it is impossible to determine whether the whole lightning protection structure is firmly fixed and whether the lightning protection structure is installed at the specified position.

This invention discloses a TNT equivalent evaluation method based on implosion quasi-static pressure. It proposes a design method for an implosion test chamber, in which an implosion test is performed on the explosive under test. The TNT equivalent of the explosive is then evaluated based on the measured peak quasi-static pressure, ensuring that the measured quasi-static pressure is approximately equal to the total energy released by the explosion of the explosive. The TNT equivalent obtained from this evaluation is scientifically reasonable, with high testing accuracy and good result stability. Furthermore, the test chamber contains sufficient oxygen to ensure the complete reaction of non-ideal explosives that require oxygen for the reaction. Therefore, this invention is not only applicable to the testing of ideal explosives but also to the testing of non-ideal explosives such as aluminum-containing explosives, thermobaric explosives, and thermobaric charges that require oxygen for the reaction.

The invention provides a method for determining gas explosion parameters based on explosion traces and related equipment. The method comprises the following steps: acquiring a target drawing of a target building with gas explosion; segmenting the target drawing by using a pre-trained image segmentation model to obtain a building structure of the target building, and constructing a three-dimensional model of the target building according to the building structure; obtaining an explosion trace graph, determining the number of position points according to the explosion trace graph, and determining the damage grade and the maximum overpressure value range of each position point in a space coordinate system according to the explosion trace graph by using a pre-trained image recognition model; constructing three-dimensional pressure field distribution of gas explosion according to the maximum overpressure value range of each position point; based on the three-dimensional pressure field distribution, the detonation point position and the explosion equivalent of gas explosion are determined.

This invention proposes a method for analyzing the volume change of a mountain and a method for analyzing explosive equivalent. The method utilizes DEM data to establish an initial three-dimensional model of the target mountain; it uses InSAR to acquire at least three pairs of SAR images of the target mountain from different line-of-sight directions, forming at least three interferograms; it reads the coordinate information of each pixel in the difference result corresponding to each interferogram, obtaining three displacement vector matrices for each direction; it calculates the deformation component of each pixel in the spatial rectangular coordinate system for each value in the displacement vector matrix; it establishes a new three-dimensional model of the target mountain based on the deformation component of each pixel in the spatial rectangular coordinate system; and it calculates the difference between the initial three-dimensional model and the new three-dimensional model of the target mountain to obtain the volume change of the target mountain. This invention overcomes the problem of traditional methods failing to clearly distinguish the boundaries of the blast range.

The invention provides an explosion damage simulation method for simultaneous launching and recovery of multiple carriers. A finite element analysis model of the explosion damage of the whole vehicle is established, the TNT equivalent of the explosion of the vehicle is converted, and nonlinear dynamic analysis of the explosion of the single vehicle on the impact damage of the adjacent vehicles is completed; evaluating the survivability of the vehicle in the explosion impact environment of the adjacent vehicle; the method comprises the following steps of: performing nonlinear dynamic analysis on impact damage of different adjacent carriers due to TNT equivalents, wall thicknesses, materials, launching heights and the like of the adjacent carriers, and establishing a relationship among the TNT equivalents of the adjacent carriers, an explosion safety distance, the wall thicknesses and the like in combination with constraint conditions meeting the yield damage tolerance of wall surfaces of the carriers and an acceleration response threshold value of key equipment; according to the method, the superposition relation of the explosion shock wave peak values under various working conditions of simultaneous explosion and non-simultaneous explosion of a plurality of vehicles is analyzed, the rule of influence on the safety of the vehicles is evaluated, and the problems of high cost, high risk, poor repeatability and the like of a ground test are solved.