1029 results about "Blast wave" patented technology

The invention provides an intelligent sewage treatment process optimization method and system. The method comprises the following steps: continuously collecting the flux attenuation rate, transmembrane pressure difference and pollutant spectrum data of a ceramic membrane, carrying out time sequence analysis, constructing a pollution accumulation dynamic model, and predicting a critical threshold value; when a threshold value is reached, triggering an ultrasonic cavitation device, adjusting high-frequency vibration to generate a microbubble group, stripping pollutants by utilizing shock waves, and calculating membrane flux recovery data; fusing the spectral data and the recovery data to extract an actual pollution stripping efficiency value, and comparing a theoretical value to obtain a difference proportion; if the actual value is lower than the theoretical value, the cleaning period is shortened, the fluid pressure is increased to strengthen the stripping effect, and meanwhile, dynamic model parameters are reversely corrected based on the pressure adjustment amplitude to form closed-loop regulation and control. According to the invention, intelligent prediction, self-adaptive cleaning and closed-loop optimization of ceramic membrane pollution are realized, the sewage filtering efficiency is improved, and the energy consumption and cleaning cost are reduced.

The invention provides a device for generating shock waves. The device may comprise an elongated tube and a conductive sheath circumferentially mounted around the elongated tube. The device may further comprise first and second insulated wires extending along the outer surface of the elongated tube. A portion of the first insulated wire is removed to form a first inner electrode, which is adjacent to a first side edge of the conductive sheath. A portion of the second insulated wire is removed to form a second inner electrode, which is adjacent to a second side edge of the conductive sheath. Responsive to a high voltage being applied across the first inner electrode and the second inner electrode, a first shock wave is created across the first side edge and the first inner electrode, and a second shock wave is created across the second side edge and the second inner electrode.

The invention discloses a shock wave overpressure field global measurement method based on multi-view image fusion, belongs to the technical field of explosive shock wave measurement, and is suitable for weapon equipment power evaluation and blasting safety analysis. The method comprises the following steps of: synchronously acquiring a time sequence image of the whole explosion process through a distributed multi-view high-speed imaging system, preprocessing the image by adopting pixel-by-pixel comparison, square operation enhancement and normalization processing, and positioning a shock wave edge contour; the blasting center coordinate is positioned through binocular parallax, the shock wave initial radius is determined by combining spatial domain analysis, and the key feature points of the front and rear edges of the wavefront are detected by using a dynamic search window and a radial gradient field. Based on multi-view constraints, a three-dimensional point cloud is generated through direct linear triangulation, and a three-dimensional wave front form is reconstructed in combination with least square spherical fitting. And finally, constructing a wavefront radius-time evolution model, and deducing a quantitative relationship between the instantaneous propagation velocity and the peak overpressure in combination with a Ranki ne-Huton iot relationship, thereby realizing the global high-precision calculation of the overpressure field.

The invention relates to the technical field of fault diagnosis, in particular to a contact mechanical wear and fault diagnosis system which comprises a data acquisition module, a wear diagnosis module, a contact surface detection module, a buffer judgment module and a composite diagnosis module. According to the method, the three-phase opening time sequence, the resistance instantaneous value, the pressure signal and the shock wave envelope are aligned and fused according to the millisecond timestamp, the multi-source data time sequence consistency and the linkage feature recognition capability are improved, the statistical correlation between the operation time and the resistance difference value is calculated through covariance, the dynamic judgment precision of the abrasion process is enhanced, and the accuracy of the abrasion process is improved. Based on pressure quadrant division and gradient ratio extraction, spatial positioning features of contact surface depression are determined, the ratio of shock wave change rate to duration is extracted, sensitive recognition of buffer performance changes is enhanced, multiple types of diagnosis results are fused to form an overlapping analysis path, and accurate recognition and logic attribution of composite fault types are achieved.

The invention provides a numerical calculation method for double-explosion-source underwater explosion impact cavitation loads, and belongs to the technical field of computer data processing-based explosion impact wave calculation, and the method comprises the following steps: solving a propagation process of far-field underwater double-explosion-source explosion impact waves in a two-dimensional acoustic flow field by using a local discontinuous Galerkin (LDG) method; and the cavitation characteristics of the flow field under the action of the double-explosion-source underwater explosion shock waves are researched. A flow field dynamic pressure result calculated by the method is compared with a result calculated by an acoustic finite element method. The result shows that the flow field dynamic pressure result calculated by the method is well matched with the calculation result data of the acoustic finite element method, and the effectiveness and the accuracy of the method are verified.

The invention discloses an underwater explosion impact equivalent loading test device and method, and belongs to the technical field of dynamic impact test mechanics, the underwater explosion impact equivalent loading test device comprises a light gas gun system, a combined water shock tube system and a measurement control system, the light gas gun system is a shock wave load loading system of a water shock tube, and the combined water shock tube system is connected with the measurement control system. Comprising a piston, a working table support, a steel pipe, a pressure sensor, a connecting flange, a connecting assembly, a transparent pipe, a double-thread screw assembly, a front panel, a test sample, a rear panel, a working table fixing support and a working table top, and a measurement control system comprises a light gas gun pressurization and emission controller, a high-speed acquisition instrument, a first high-speed camera and a second high-speed camera. The underwater explosion impact equivalent loading test device and the underwater explosion impact equivalent loading test method are compact in structure, convenient to use and suitable for researching underwater dynamic impact protection performance and fluid-solid coupling mechanism of materials or structures in laboratories.

The invention relates to the technical field of tunnel construction, in particular to a tunnel blasting quality evaluation method based on multi-source data fusion, which comprises the following steps: synchronously acquiring multi-source data such as blasting vibration waveform, shock wave overpressure, dust concentration time sequence and excavation face image through a sensor network and image acquisition equipment arranged in a tunnel; performing preprocessing and time sequence alignment on the data to form a standardized data sample set; multi-dimensional feature vectors representing the blasting effect are extracted from the multi-dimensional feature vectors respectively; fusing various features into a high-dimensional feature vector, training a machine learning model by using historical data and quality grade labels evaluated by experts to establish a mapping relationship between the features and quality grades, and constructing an intelligent evaluation model; and online automatic evaluation and visual result output of the new blasting event are realized. According to the invention, automation, objectization and systematization of blasting quality evaluation are realized, and an efficient and reliable data-driven solution is provided for tunnel construction quality control.

The partial or full dehydration of organic or inorganic matter containing water by induction of matter into a vacuum and processing matter through a specially designed acceleration channel is disclosed. The inducted matter accelerates in air from zero speed to sub-sonic speed to reach supersonic speed. As the material transitions the sound barrier, it is subject to acoustic shock waves and an instant negative pressure drop occurs. The sound waves disintegrate, disinfect the material and extract part or all moisture from any organic or inorganic material.

The invention belongs to the technical field of battery detection, and particularly relates to a new energy power battery short circuit test cabinet, which comprises an explosion-proof cabinet, the explosion-proof cabinet is provided with a transmission cabin and a test cabin, and a transmission system, a termination system and a power-on system are arranged in the transmission cabin. In order to avoid deflagration of a circuit in a test process and reduce damage to detection equipment, an impact transmission system and a termination system are arranged, a mechanical transmission mode is utilized, short-circuit wiring of a battery is immediately interrupted when the battery explodes, impact force generated by explosion is directly converted into mechanical action, a signal conversion process is not needed, and the detection efficiency is improved. Compared with the prior art, the device has the advantages of higher response speed, higher extreme environment resistance and lower manufacturing cost, and can effectively reduce the damage of explosive shock waves to the test cabin in the test process.

The invention discloses a one-dimensional and two-dimensional simultaneous diagnosis shock wave velocity measurement system, and relates to the technical field of shock wave velocity diagnosis. The system comprises a targeting light receiving unit, a one-dimensional line imaging unit and a two-dimensional velocity field unit which are arranged on the same light path, the target shooting light receiving unit comprises a light receiving module and a target spot; the one-dimensional line imaging unit comprises a probe light injection module, a light splitting module, a first beam splitter, a first reflector, an interference module and a one-dimensional continuous velocity field measurement module; the two-dimensional velocity field unit comprises a two-dimensional dynamic velocity field diagnosis module; the two-dimensional dynamic velocity field diagnosis module comprises an integration branch and a compression coding branch. According to the system provided by the invention, in the process of performing one-dimensional and two-dimensional shock wave velocity field diagnosis, one-dimensional shock wave velocity evolution and two-dimensional velocity field non-uniformity evolution data can be simultaneously obtained in a single-shot experiment, the overall structure is compact, and a foundation is laid for shock wave velocity multi-dimensional diagnosis.

The invention discloses a self-adaptive pre-pressure-relief danger relieving device for a deep mine. The self-adaptive pre-pressure-relief danger relieving device comprises a supporting assembly. The supporting assembly comprises two side supporting plates which are symmetrically arranged, a top supporting plate is installed on the tops of the side supporting plates through connecting plates, and a plurality of pressure relief buffering assemblies which are arranged at equal intervals are installed on the outer walls of the side supporting plates and the outer wall of the top supporting plate. A pressure relief channel is established through the drilling assembly, continuous and directional hydraulic pressure relief is achieved in combination with the jet flow pressure relief assembly, rock mass fractures are effectively expanded, in addition, high-energy shock waves can be rapidly released through the blasting pressure relief assembly, strong pressure relief is achieved, and the device is suitable for a high-stress area; the jet flow pressure relief assembly and the blasting pressure relief assembly are switched in the hollow anchor rod, and an external water supply system and a blasting control system are connected, so that a mine has high adaptive capacity and safety performance according to different pressure relief requirements.

The present invention relates to a method for the disaggregation of particle composites, in which particle composites comprising or consisting of electrode coating material particles bound with at least one binder are introduced into a process medium, the particle composites introduced into the process medium are subjected to at least one shock wave treatment, whereby the particle composites at least partially disaggregate and disaggregated electrode coating material particles are obtained, and the disaggregated electrode coating material particles are separated from the process medium.In addition, the present invention also relates to a device for disaggregating particle composites, comprising a reactor with a device for generating shock waves, a container for a process medium in which the reactor is at least partially arranged, at least one filling device for filling the reactor with particle composites comprising or consisting of electrode coating material particles bound with at least one binder, and at least one first separation device for separating disaggregated electrode coating material particles from the process medium.

The invention relates to the technical field of intelligent manufacturing, in particular to a chain production data monitoring and optimizing system based on industrial internet of things, which comprises a stress load monitoring module, a shock wave propagation analysis module, a vibration feature extraction module, a load optimization control module and a fracture risk early warning module. According to the method, through combination of stress data acquisition and coordinate index and gradient calculation, a transient stress overload area of chain plate stamping and pin shaft heat treatment is positioned, local extreme points are dynamically screened to improve anomaly detection precision, an energy accumulation coefficient is quantified by shock wave propagation speed and attenuation rate, and a vibration anomaly source of a chain pin shaft and a chain plate is associated. The vibration signals are subjected to short-time Fourier transform to analyze riveting and assembling characteristic frequencies, high-resolution stress mode characteristic values are generated to support parameter optimization, operation data are simulated to construct a stress accumulation curve, test parameters are dynamically adjusted in combination with a short-term stress limit to optimize load uniformity, and an impact energy accumulation value is matched with a safety threshold to calibrate load distribution; the fracture risk is reduced.

The invention discloses a bionic joint humanoid robot navigation positioning method, device and equipment, and the method comprises the steps: monitoring a landing shock wave signal and reflection echo data of a robot, carrying out the time domain expansion of the shock wave signal to form a pulse characteristic spectrum, extracting multipath propagation components, and carrying out the time difference correlation to generate an environment response value. Screening a direct wave component by using an environmental response value, positioning a sound wave propagation trajectory, and detecting impedance mutation to construct an acoustic matrix. A strong reflection zone is identified through node analysis, a sound pressure gradient field is extracted to determine an obstacle boundary, and a landmark feature bit is determined in combination with an environmental response value. And adjusting a dynamic stride frequency interval based on a landmark feature bit, forming an adaptive detection sequence, and performing sparse processing to construct path configuration. The mechanical vibration component of the shock wave signal is used for piezoelectric conversion to generate recycled electric quantity, the recycled electric quantity is matched with path configuration power to determine a sensing period, intermittent sensing is executed to obtain detection data to construct a detection convergence field, and finally an accurate positioning window is determined and converted into position coordinates.

The invention provides a laser plasma sound barrier and magneto-rheological antiknock array collaborative protection method. The method comprises the following steps: firstly, constructing a collaborative protection structure consisting of a laser plasma sound barrier layer and a magneto-rheological antiknock array layer; a shock wave leading signal is detected in real time and input into a preset multi-dimensional feature model, the model dynamically generates a protection strategy, and a sound barrier instruction and an anti-explosion instruction are output respectively. The laser plasma sound barrier layer outputs specific reverse sound waves according to a sound barrier instruction and attenuates shock waves through destructive interference; meanwhile, the magneto-rheological anti-explosion array layer instantaneously solidifies a magnetic field according to an anti-explosion instruction, and shock wave energy is efficiently absorbed. According to the laser plasma sound barrier and magneto-rheological anti-explosion array cooperative protection method provided by the invention, the cooperative protection structure and the preset multi-dimensional feature model are constructed, so that the cooperative effect of the sound barrier and the anti-explosion array is realized, the response speed to shock waves is increased, the energy processing efficiency is improved, and the adaptability and reliability of protection are enhanced.

The invention discloses a mine blasting safety monitoring and early warning system, which comprises a multi-source sensing module, an edge computing node, a dynamic risk assessment module, an intelligent early warning decision module and an emergency linkage execution module, and is characterized in that the multi-source sensing module acquires multi-dimensional data such as blasting vibration, shock waves and toxic gas through various sensors; edge computing nodes filter noise and extract time-frequency features; the dynamic risk assessment module inverts blasting energy based on vibration and shock wave data, and predicts secondary disasters in combination with a geological model and gas concentration; the intelligent early warning decision module dynamically adjusts an early warning threshold by using a deep learning model and fusing multi-modal data; the emergency linkage execution module executes instructions such as power failure and evacuation according to devices such as early warning level, linkage ventilation and personnel positioning, overcomes the defects of traditional single monitoring and lack of correlation models, realizes full-process and all-directional monitoring of blasting operation, and effectively improves the safety of mine blasting operation and the efficiency of emergency management.

The invention relates to the technical field of capacitors, and particularly discloses a compensation capacitor with an explosion-proof function, which comprises a protective shell and a capacitor body, the capacitor body is movably mounted in the protective shell, a stabilizing mechanism is arranged in the protective shell, a top cover is mounted at the top of the protective shell, and a heat dissipation mechanism is arranged on the top cover. And a plurality of third openings are uniformly formed in the top of the top cover. According to the invention, through the arrangement of the protection shell and the movable plate, when the capacitor body explodes, a relatively closed space is formed in the protection shell, and when the capacitor body explodes, the protection shell absorbs explosion shock waves, so that the capacitor body can be prevented from damaging surrounding equipment during explosion; the use safety of the device is improved; in the use process of the capacitor body, when equipment vibrates and a vibration value is transmitted to a movable plate, the vibration value can be absorbed through a first spring telescopic rod.

The invention relates to a protection evaluation method for sympathetic detonation multi-physics field load collaborative loading, belongs to the field of explosion impact protection evaluation, and solves the problem of sympathetic detonation multi-physics field load collaborative loading protection evaluation. The method comprises the following steps: S1, building a sympathetic detonation multi-physical field load collaborative loading test system, and realizing collaborative loading of explosive shock waves and fragment groups; s2, acquiring multi-physics field cooperative load parameter information and damaged state information of the to-be-tested piece through a test system; s3, calculating a sympathetic detonation cooperative load strength evaluation index and a protection performance evaluation index of the to-be-tested piece according to various data tested in the step S2; s4, performing nondimensionalization on the protection performance evaluation index of the to-be-tested piece to obtain a protection efficiency comprehensive evaluation function of the to-be-tested piece; and various evaluation indexes are introduced to obtain a comprehensive protection evaluation index phi of the to-be-tested piece. According to the invention, sympathetic detonation multi-physical field load cooperative loading and quantitative evaluation of the protection performance of the to-be-tested piece are realized.

The invention discloses a primary support early-age sprayed concrete safety assessment method under cyclic blasting load, and relates to the field of concrete reliability analysis, and the method comprises the following steps: determining geometric parameters of a to-be-protected tunnel, and establishing a tunnel finite element model; determining a blasting load by using a detonation wave theory, and applying the load to the model for finite element analysis to obtain residual deformation data of each extraction point; determining a blasting load influence range; monitoring the environment temperature time sequence data of the evaluation sub-section, and representing the hydration degree and the water content of the evaluation sub-section; according to the method, the mapping relation between the mechanical characteristic parameters and the hydration degree and the water content is established, the mechanical characteristic parameters of the concrete are calculated, the safety of the sprayed concrete is determined by comparing damage with a safety difference standard, and the scientificity of safety evaluation of the sprayed concrete is improved.

The invention relates to a safety control method for underwater blasting in a sensitive area. The method comprises the following steps: acquiring rock hardness data and a fracture development grade of a target area; acquiring underwater flow velocity data, and acquiring hole net parameters and explosive distribution positions in combination with the rock hardness data and the fracture development grade; vibration data and shock wave data in the blasting process are collected and processed, and the processed vibration data and shock wave data are obtained; according to the processed vibration data and shock wave data, the concentration degree of blasting energy release is judged through preset indexes, and the preset indexes are an energy concentration index and a crushing uniformity index; and if the concentration degree of blasting energy release is smaller than the preset value, the charging structure is adjusted, and blasting operation is executed. According to the method, the safety of underwater blasting in the sensitive area can be improved.

The invention belongs to the field of electric digital data processing, and relates to a method for evaluating damage of long-lasting shock waves to an engineering target by considering environment temperature, which comprises the following steps of: calibrating normal-temperature constitutive model parameters; establishing a normal-temperature long-duration explosion numerical simulation model; calibrating constitutive model parameters at different temperatures; establishing a different-temperature explosion numerical simulation model, and performing explosion process numerical simulation to obtain different-temperature numerical simulation damage data; substituting the simulated damage data into a classical P-I curve expression for fitting, and establishing a P-I curve damage criterion expression at different temperatures; substituting the temperature empirical formula into a P-I curve damage criterion expression at different temperatures to obtain a damage criterion considering the temperature effect; and based on the damage criterion considering the temperature effect, completing the damage assessment work according to the characteristics of the to-be-assessed engineering target and the environment temperature. The method does not need to depend on physical tests, and can efficiently complete engineering target damage assessment under the action of long-lasting explosive shock waves through a numerical simulation technology and algorithm.

The invention relates to the field of hydrogen energy conveying safety, in particular to a method, device and equipment for estimating the explosion damage range of a hydrogen conveying pipeline. The method for estimating the explosion damage range of the hydrogen conveying pipeline comprises the following steps: acquiring physical parameters and environmental conditions of the hydrogen conveying pipeline; based on the physical parameters of the gas conveying pipeline, the isentropic expansion theory is adopted to calculate the explosion energy of the hydrogen conveying pipeline in unit length; calculating initial peak overpressure by adopting an exponential decay model on the basis of the explosion energy of the hydrogen conveying pipeline per unit length; based on environmental conditions, correcting the initial peak overpressure to obtain corrected peak overpressure; and determining a damage range based on the corrected peak overpressure. According to the method, the shock wave overpressure generated by explosion of the hydrogen conveying pipeline can be rapidly calculated, efficient, accurate and real-time damage range estimation is achieved in combination with environmental factor correction, and personnel injury and property loss caused by potential accidents are reduced.

The invention discloses a shock wave overpressure field reconstruction method based on physical information, and relates to the technical field of artillery launching, and the method comprises the following steps: building a multi-scene overpressure empirical formula library comprising a Henrych formula, an M.A.Sadovskyi formula and national defense design specifications, and embedding physical prior knowledge into a neural network for training through a weighted loss function; an attention module with a channel-space cooperative enhancement capability is formed by fusing the one-dimensional efficient channel attention, the extrusion excitation network and the dimension reduction CBAM; according to shock wave propagation characteristics, a forward shock wave field subtask and a muzzle rear wave front subtask are divided, and regional prediction is achieved through dynamic characteristic routing; and optimizing network parameters by adopting a low data volume training strategy, and outputting overpressure peak field distribution. According to the method, through construction of a physical data fusion constraint mechanism and an EC-SEAM mixed attention mechanism, network physical interpretation and near field mutation feature extraction capability are improved, and dependence on labeled data is remarkably reduced.

The invention relates to a method for controlling physical quantity of underwater explosion near a naval vessel based on a multiphase flow model, and belongs to an anti-impact technology of underwater explosion near the naval vessel. According to the method, an additional correction equation related to total mixed energy is created, and a model is expanded into seven equation models. A mixed energy correction equation is introduced, and a more accurate gas state equation is combined, so that the difference between the predicted thermodynamic states under the shock wave condition is solved; an algorithm program of an improved six-equation model is provided on an unstructured grid system, a homogeneous hyperbolic equation is solved by using a second-order MUSCL-Hancock format based on least square reconstruction and a Barth-Jespersen limiter and a two-phase flow HLLC Riemann solver, and then an instantaneous pressure relaxation equation is solved by using a Newton-Raphson iteration method. By improving the six-equation model in the diffusion interface method, the interface capture precision and the numerical algorithm stability are improved.

The invention is suitable for the technical field of butterfly valve control, and particularly relates to a butterfly valve rapid cut-off control method and a butterfly valve. Wherein the position information comprises a first position and a second position, the first position is used for reflecting the position of a first sound detection device arranged at the upstream of the butterfly valve, and the second position is used for reflecting the position of a second sound detection device arranged at the downstream of the butterfly valve; acquiring sound information according to the position information; analyzing according to the sound information to obtain a change graph; wherein the change pattern is used for reflecting a sound pattern formed by impact of the fluid on the pipeline in the process that the fluid flows from the first position to the second position; analyzing according to the change graph and the sound information to obtain closing information; wherein the closing information is used for indicating the closing time of the butterfly valve. According to the butterfly valve quick cut-off control method, noise in the pipeline can be reduced, and damage to the butterfly valve and the pipeline due to pressure shock waves is reduced.

The invention relates to the technical field of geological exploration, in particular to an underground environment data acquisition method and system for three-dimensional simulation environment modeling, working condition parameters are acquired and input into a CFD model, and an underground dynamic risk map is generated based on shock wave signals; the method comprises the following steps: collecting water mist data to construct a humidity field, and embedding humidity field data into a dynamic risk map generation process, which comprises the following steps: in an injection compression period, solving an N-S equation set, detecting and encrypting a key area grid through a pressure gradient, and generating a burst dust cloud form and density distribution. The results of four stages of turbulence evolution are fused to form a five-dimensional tensor structure including space coordinates, duration time, humidity compensation risk levels, a water film distribution thermodynamic diagram and a water mist light attenuation coefficient, different risk areas can be clearly marked, switching of data acquisition strategies is guided, the problems of artifacts and distortion are effectively solved, and the accuracy of data acquisition is improved. Accurate point cloud data can be obtained in a complex environment.

The invention relates to a negative Poisson's ratio composite anti-explosion wallboard unit, an anti-explosion wallboard structure and a construction method of the anti-explosion wallboard structure. The anti-explosion wallboard unit comprises an impact protection layer, a negative Poisson's ratio steel plate layer, a multifunctional back plate layer and a buffering energy absorption layer from outside to inside. The outer surface of the impact protection layer is an anti-impact wave curved surface; the negative Poisson's ratio steel plate layer is composed of two layers of negative Poisson's ratio steel plates which are arranged in parallel, a containing cavity is formed in each layer of negative Poisson's ratio steel plate, a plurality of rhombic negative Poisson's ratio units are evenly distributed in each containing cavity, and hinge joints are formed between the end points of the rhombic negative Poisson's ratio units and the inner wall of a cavity body of each containing cavity; the multifunctional backboard layer comprises a support body and an assembly space arranged along the back surface of the support body, and the assembly space is used for detachably embedding a functional board; and the buffer energy absorption layer is used for absorbing and dissipating residual energy attenuated by the layers. Through a multi-stage collaborative energy consumption mechanism of curved surface deflection, negative poisson ratio structure energy absorption, back plate dispersion and elastic body buffering, the anti-knock performance and the energy dissipation efficiency of the wallboard are remarkably improved.

This invention relates to the field of blasting testing technology and discloses a method for quantitatively representing intrusive blasting waves within a double-layer curtain wall space. The method includes establishing an experimental system, creating a basic model of the double-layer curtain wall structure, conducting blasting experiments, verifying the accuracy of the LS-DYNA simulation software's simulation of the experimental content, and parameter analysis. The parameter analysis includes quantitative analysis using blasting wave intensity, intrusion hole height H, and the distance C between the outer and inner curtain walls as variables. Through finite element simulation, combined with extensive data and theoretical analysis, a method for calculating the peak pressure of the intrusive blasting wave inside the structure is derived. This method for quantitatively representing intrusive blasting waves within a double-layer curtain wall space has the advantage of ease of use. It allows for the exploration of the blasting wave pressure inside the structure and the corresponding implementation of structural protection designs, effectively improving the scientific rigor and reference value of internal structural protection designs, and making a significant contribution to the stable management of structural safety.

The invention provides an analogue simulation method for accumulated craniocerebral injury under the action of multiple shock waves, and relates to the technical field of data processing. The method comprises the following steps: constructing an explosive shock wave model; constructing a head geometric model; the brain, the cerebellum and the brainstem in the solid area are represented through a Mooney Rivlin model; representing the skin, muscles and skull in the solid area through a linear elastic constitutive model; the cerebrospinal fluid in the fluid area is represented through the fluid dynamic model; coupling the fluid region and the solid region through an embedded boundary method; calculating the explosion impact pressure when the explosion impact waves of each turn are transmitted to the head through an explosion impact wave model; through a finite element analysis method, accumulated skull displacement, skull acceleration, skull stress, skull strain and intracranial pressure under the action of each turn of explosion shock waves are determined, and a brain accumulated injury value is calculated.

The invention discloses an explosion load simulation test device, system and method, and belongs to the technical field of explosion tests. The device comprises a driving section and a driven section, the driving section comprises a test pipeline which is used for guiding and accommodating methane-air mixed gas and deflagration products, a plurality of through holes which can be sealed by bolts are formed in the test pipeline, an obstacle partition plate and a polyethylene film are arranged in the test pipeline, and the polyethylene film is used for forming an inflation section; the driven section comprises an expansion section, a straight section and a structural section which are connected in sequence, the first end of the expansion section is connected with the test pipeline and used for diffusing shock waves generated by detonation, and the two ends of the straight section are connected with the second end of the expansion section and the structural section respectively and used for completing shaping of the blast load and improving the uniformity of blast load distribution on the structural section; and the structural section is used for bearing explosion load driven by detonation of methane and air mixed gas. According to the invention, the methane-air mixed gas is used as an explosion source, so that the test safety is improved, and the test cost is reduced.