699 results about "Experimental testing" patented technology

Provided in the present invention is a thermal stress simulation method for a laminated structure. The simulation method comprises: importing a simulation model; creating a heat dissipation simulation process; completing relevant settings of a model heat source device; setting a thermal analysis simulation environment; activating a thermal stress analysis option, and selecting the type of fixed support; completing thermal-stress coupling simulation analysis; checking a post-processing result; and modifying a layout design according to the post-processing result. A potential structural risk of an electronic product can be predicted by means of thermal stress simulation, the situations of a temperature field, a stress field and a deformation field of an analysis object are obtained by means of finite element analysis, and theoretical research and an experimental test are effectively verified and supplemented, thereby rapidly implementing the verification and iteration of a product.

The invention relates to a characterization method for the influence of the corrosion degree on the interface bonding performance of steel fibers and concrete, and solves the technical problems that a large amount of time and cost need to be consumed by depending on a traditional experimental test method, and the complex influence of corrosion on the interface bonding performance is difficult to comprehensively and accurately reflect. The method comprises the steps that steel fibers which are taken out and subjected to single-pull test operation are subjected to preset acid pickling operation one by one, and the mass loss rates of the steel fibers with different corrosion degrees are obtained through calculation one by one according to mass changes of the steel fibers before and after the acid pickling operation; and fitting the interface bonding strength data corresponding to different corrosion degrees by adopting a preset statistical analysis method to obtain a mathematical expression between the interface bonding strength and the corrosion degrees. The method has the following effects that the influence of corrosion on the bonding performance of the steel fiber and concrete interface is comprehensively evaluated in multiple aspects, and the safety and durability of the steel fiber concrete structure in practical application are improved.

The invention relates to the technical field of boiler engineering and artificial intelligence modeling, in particular to a coal-fired boiler biomass blending combustion working condition intelligent optimization method, which comprises the following steps: constructing a three-dimensional mathematical model of coal-fired boiler biomass blending combustion based on experimental test data; performing multi-working-condition numerical simulation according to boiler combustion working condition fluctuation in the three-dimensional mathematical model; according to the numerical simulation data, constructing a time-space coupling model for co-combustion of biomass in the coal-fired boiler; the modeling accuracy is improved through a numerical simulation technology, the boiler operation condition is dynamically optimized in combination with space-time modeling, and theoretical support is provided for energy conservation and emission reduction and blending combustion proportion optimization; the method is suitable for environment-friendly transformation and operation optimization of the coal-fired boiler, and carbon emission and pollutant emission can be effectively reduced.

The invention discloses a flexible photovoltaic support aeroelastic response wind tunnel test platform and method, and the platform comprises a platform body which comprises a wind field simulation region and an experiment test region. A wind tunnel wedge is arranged at the front section of the incoming flow wind direction in the wind field simulation area; a flexible photovoltaic support model is arranged in the experimental test area; the flexible photovoltaic support model comprises a photovoltaic panel, a flexible photovoltaic panel support and a flexible photovoltaic panel base; the flexible photovoltaic panel base is fixed on the wind tunnel turntable; the photovoltaic panel is fixed on the flexible photovoltaic panel base through the flexible photovoltaic panel bracket; steel cables penetrate through the interior of the photovoltaic panel, and the steel cables on the two sides are connected with an electronic tension meter and a tightening device. Through the platform and the method, a real complex wind field environment can be simulated, dynamic response data of the support under different working conditions can be obtained, and a scientific basis is provided for design optimization and wind resistance improvement of the flexible photovoltaic support.

The invention relates to an electrochemical impedance acquisition method based on a time sequence model and an electrochemical impedance model. The method comprises the following steps: constructing an experimental test matrix taking a battery material system, temperature, SOC and the like as variables; performing charging and discharging test on the battery according to the experimental test matrix; after the battery stands, current excitation is applied through an electrochemical workstation, real electrochemical impedance spectroscopy data are obtained, parameter identification is carried out, and a model training label is extracted; extracting features of the process data of the charging and discharging test, and constructing an electrochemical impedance data set; based on a time sequence pre-training basic model, training by utilizing the electrochemical impedance data set to obtain an electrochemical impedance model; and predicting the electrochemical impedance spectrum of the battery to be detected by adopting the trained electrochemical impedance model. Compared with the prior art, the method has the advantages that the time sequence large model and the electrochemical impedance model are combined, efficient acquisition and accurate analysis of the electrochemical impedance spectrum are realized, and the method has wide application potential in real-time monitoring and dynamic application environments.

The invention discloses a Bayesian neural network-based concrete durability prediction method, which is characterized in that durability prediction is carried out by designing a multilayer Bayesian neural network model and combining data such as a concrete mix proportion, external environment conditions and material attributes. The Bayesian neural network updates the weight and bias through random sampling, and can quantify the uncertainty of prediction and provide a prediction confidence interval. The method comprises the specific steps of data preprocessing, network training, sampling, calculating and outputting a mean value and a standard deviation, optimizing model parameters through a gradient descent method, and finally evaluating model prediction performance. According to the method, the uncertainty in concrete durability prediction can be effectively quantified, more scientific and accurate decision support is provided for building engineers, and the cost and time of experimental testing are reduced.

The disclosure discloses a method for strengthening shear strength of a RC beam with a compressed steel bar, including step one: analyzing and concluding that the compressed steel bar has a positive effect of on shear strength of the RC beam via experimental testing and / or establishing a truss model; step two: carrying out a finite element simulation; step three: comparing a result obtained by the finite element simulation with that obtained by the experimental testing, to verify a reliability of the finite element model; step four: systematically researching a comprehensive impact of a reinforcement ratio of the compression steel bar, a stirrup ratio ρsv, a reinforcement ratio ρst of a tensile longitudinal steel bar, a shear span ratio / and a concrete strength grade (fco) on the shear strength of beam; and step five: obtaining a mathematical model of an increment of shear strength via regression analysis.

The invention belongs to a complex lithofacies shale reservoir structure weak plane mechanical parameter determination method and system, and belongs to the field of unconventional shale oil and gas reservoir transformation. The method comprises the following steps: carrying out a nanoindentation experiment test on a rock core sample containing a structural weak plane to obtain a macroscopic uniaxial elastic modulus and macroscopic fracture toughness of the structural weak plane; constructing a particle flow discrete element numerical model; on the basis of construction of the particle flow discrete element numerical model and the macroscopic uniaxial elastic modulus and the macroscopic fracture toughness of the structure weak plane, particle flow micromechanical parameter calibration is carried out; and obtaining the mechanical parameters of the weak plane of the structure based on particle flow microscopic mechanical parameter calibration. According to the method, the compressive strength, the elastic modulus, the Poisson's ratio, the cohesion, the internal friction angle, the fracture toughness and the tensile strength of the structure weak plane can be rapidly and accurately predicted, the defect that an existing indoor physical experiment device cannot measure mechanical parameters of a non-standard sample is effectively overcome, and input parameters are provided for fine simulation of hydraulic fracturing of a complex lithofacies shale reservoir.

The invention discloses a multi-field coupled microwave deicing intelligent system and an energy efficiency dynamic regulation and control method, and relates to the field of material surface ice layer desorption behavior research and deicing technology experimental testing. In order to solve the technical defects in the prior art that the existing microwave deicing technology still has obvious defects in the aspects of power adjustability, field distribution uniformity, interface depth temperature measurement, real-time mechanical test and the like, the technical scheme provided by the invention is as follows: the microwave deicing device comprises a microwave box body which is a metal closed cavity and is provided with a waveguide interface; a stirrer is arranged inside; the refrigerating system is connected with the back surface of the bearing plate of the microwave box body; a pressure head at the tail end of the mechanical loading module applies thrust to the ice layer; the device and the method are used for realizing construction, microwave heating and real-time mechanical testing of a low-temperature icing environment on the same platform. The method can be applied to dynamic monitoring and research work in multi-physics coupling deicing scenes such as aviation, traffic and new energy.

The invention provides a pole piece testing method, electronic equipment and a computer readable storage medium. The method comprises the following steps: acquiring pole piece data of the battery and liquid phase conductivity of electrolyte; and performing alternating-current impedance test on the battery to obtain an alternating-current impedance spectrum of the battery. And fitting the alternating current impedance spectrum to obtain the ion impedance of the battery. And determining performance data of the pole piece according to the ion impedance, the pole piece data and the electrolyte liquid phase conductivity. And performing simulation test and experimental test on the pole piece according to the performance data to obtain simulation data and real data, comparing the simulation data with the real data, and when the difference value between the simulation data and the real data is within the error range, determining that the simulation precision meets the simulation standard. Whether the pole piece meets the design standard of the battery or not can be quickly judged, the design efficiency of the pole piece is improved, and the design robustness is enhanced.

The invention discloses a sealing dynamic performance experiment test platform which comprises an environment box, an experiment sleeve, a hydraulic oil pump, a high-speed reciprocating device and a leakage detection device, a temperature control device I and a base are arranged in the environment box, a temperature sensor probe is arranged in the base, and the experiment sleeve comprises a left guide sleeve, a shaft sleeve and a right guide sleeve. A left guide sleeve and a right guide sleeve are arranged between the shaft barrel and the base, a seal is arranged between the left guide sleeve and the right guide sleeve, a coaxial through hole is axially formed between the left guide sleeve and the right guide sleeve, a to-be-tested sealing piece is arranged between the shaft barrel and the base, an oil supply pipeline and an oil return pipeline are arranged between the shaft barrel and the base and provided with a seal, and the oil supply pipeline and the oil return pipeline are both communicated with a hydraulic oil pump containing a temperature control device II. The lower portions of the left guide sleeve and the right guide sleeve are respectively provided with an inverted funnel structure and a middle inclined notch. The device can provide single or multi-working-condition combined simulated use working conditions such as high temperature, high pressure, high speed, pulse, low temperature and reciprocation, measure the leakage rate in real time, and realize data measurement and performance evaluation of hydraulic reciprocating dynamic sealing.

The invention discloses a composite material multi-dimensional variable-rigidity casing structure, and relates to the field of aero-engines. The cartridge receiver structure has the multi-dimensional variable stiffness characteristic of in-plane and out-plane variable stiffness; the in-plane rigidity is changed, the laying angle of the composite material fibers is changed in a continuous curve form, and when the continuous curve fibers are wound, the fibers have tension stress to provide prestress for the structure of a casing containing area; the out-of-plane variable stiffness is achieved, two or more materials are alternately laid to achieve stiffness change of the composite material in the thickness direction, the in-layer fiber laying angle is alternately changed, and the number of laid layers, the thickness of the laid layers and the density degree of the fibers can be adjusted to achieve the optimal mechanical property. According to the method, the variable stiffness characteristics of each region of the cartridge receiver structure are optimized according to numerical simulation and experimental test results, so that fine regulation and control of multi-dimensional variable stiffness and local strength are realized on the premise of ensuring the structural strength safety and the lightweight target; the problems that a traditional metal engine case structure is insufficient in rigidity strength and weight reduction space are solved.

The invention provides a parameter determination method and device of a cohesion unit, and relates to the technical field of rock engineering. The method comprises the following steps: constructing a numerical model of a rock to be measured, which comprises a rock matrix unit and an embedded cohesion unit; applying a preset load to the to-be-tested rock for experimental testing to obtain a first stress-strain curve and a first peak point in the first stress-strain curve; constructing an objective function of a simulated annealing algorithm based on a stress error and a strain error between the first peak point and the second peak point; the second peak point is obtained by performing numerical simulation on the numerical model; and iteratively updating the current parameter value of the cohesion unit by adopting a simulated annealing algorithm and an objective function thereof to obtain an optimal parameter value. The parameters of the cohesion unit are automatically optimized and calibrated based on the simulated annealing algorithm, the calibration efficiency of the parameters of the cohesion unit in rock simulation can be remarkably improved, a large amount of time and manpower resources are saved on the basis of guaranteeing the parameter calibration accuracy, and the numerical simulation result is more reliable.

The invention provides a method for monitoring the degradation process of 3-chloroaniline, and relates to the technical field of water environment pollution remediation. According to the method, by combining multi-dimensional monomer isotope fractionation characteristics and experimental test results, theoretical calculation and experimental test are combined, possible degradation ways, degradation mechanisms and environmental attribution of 3-chloroaniline are deduced, and the results are complete and accurate. Compared with a mode of capturing and degrading intermediate products and free radicals only through a test means so as to reversely deduce a degradation pathway, the monitoring method provided by the invention can well make up the defects of experimental tests, deeply understand a degradation mechanism, more scientifically and reliably analyze the degradation pathway, the mechanism and the environmental destination of the pollutant 3-chloroaniline, and has a good application prospect. Key steps are favorably controlled, and the development of a high-efficiency and low-cost remediation technology for the polluted water environment is promoted.

The invention provides a heterogeneous asphalt mixture crack propagation behavior simulation method. The method comprises the following steps: obtaining particle size distribution of aggregate by adopting a screening test to determine aggregate gradation; the method comprises the following steps: testing according to the aggregate gradation and the type of an asphalt mixture to obtain the optimal asphalt dosage, preparing an indirect tensile test piece of the asphalt mixture and asphalt mortar, a dynamic modulus test piece of the asphalt mortar and an aggregate-asphalt-aggregate interface tensile test piece, and respectively carrying out corresponding indoor test on each test piece to obtain the asphalt-asphalt-aggregate interface tensile test piece. A corresponding test result is obtained; the method comprises the following steps: converting three-dimensional gradation of aggregate gradation of the asphalt mixture into two-dimensional gradation, randomly generating an indirect tensile test finite element test piece of the asphalt mixture of irregular aggregate on the two-dimensional dimension according to the two-dimensional gradation, and performing finite element simulation; by establishing a finite element model for an indirect tensile cracking test of the asphalt mixture, the influence of an interface transition region and a void ratio on the cracking behavior of the asphalt mixture can be analyzed from the interior of a microstructure.

The invention provides a light-weight optical fiber adapter rotating target detection method based on improved YOLOv8n, and relates to the technical field of computer vision and target detection, and the method comprises the following steps: collecting an optical fiber adapter image in a real scene, marking data, and carrying out the data enhancement to expand a data set; the method comprises the following steps: carrying out improvement on the basis of a YOLOv8n OBB model, and integrating MobileViTv3 into a C2f module of a backbone network; the Ghost Bottleneck v2 is integrated to a C2f module of the neck network; the structure of the detection head is improved by using Dynamic Head; the improved YOLOv8n-OBB lightweight model is used for training evaluation, and Angle DFL Loss is introduced in the training process to serve as a loss function; a label distribution strategy DynamicATSS module is integrated; completing the training, and keeping the optimal weight model after the training for experimental testing; according to the method, the detection requirements of high precision and low resources of an optical fiber adapter identification model are fully considered, the detection precision and the lightweight degree of the model can be effectively improved, and the method is suitable for efficient operation in embedded equipment and can be effectively used for detection of the optical fiber adapter.

The invention discloses a multiphase erosion corrosion coupling damaged pipeline simulation experiment test system and method. Comprising a screw pump, a pressure measurement module, a high-pressure rubber expansion joint, a gas release module, a check valve, a special feeding module, a temperature control measurement module, a wall shear force measurement bin, a fluid acceleration module, a buffer tank, a pipeline pressurization module, a temperature sensor, an electric control cabinet and a copper pipe coil cooler which are arranged on a circulating pipeline. The problem that the gas-liquid / gas-liquid-solid multi-phase erosion and corrosion coupling damage rule and the predicted damage rate are difficult to test in a high-sulfur, high-chlorine and high-acid severe environment in a petrochemical chemical production device is solved, and the damage rate of the petrochemical chemical production device is predicted by designing a special feeding structure, a pressurizing structure, an accelerating structure, a constant temperature structure, an anti-corrosion structure, an anti-abrasion structure, an anti-vibration structure and other structures and a temperature, flow, concentration and pressure precise regulation and control system. Long-time stable operation and accurate measurement of multi-phase scouring and corrosion coupling damage are realized, and safety evaluation and risk prevention and control of complex flow-induced damage of a petrochemical chemical production device are effectively supported.

The invention discloses a method for evaluating the imidization degree of high-voltage-resistant polyimide, and belongs to the technical field of manufacturing of passivation layers of high-voltage power devices. The evaluation method comprises the following steps: acquiring Fourier infrared spectrograms of a standard test sample A and an experimental test sample B, acquiring and comparing absorption peak intensities of the standard test sample A and the experimental test sample B near an imine I band and a benzene ring stretching vibration peak, and calculating the imidization degree R1 of the test samples; acquiring and comparing the absorption peak intensities of the standard test sample A and the experimental test sample B in an imine III band and near a benzene ring stretching vibration peak, and calculating the imidization degree R2 of the test samples; and obtaining the imidization degree R according to the imidization degrees R1 and R2 of the test sample. According to the evaluation method, the imidization degree of the polyimide film can be quantitatively evaluated through the absorption peak intensity ratio of the polyimide film at the specific wave number, so that whether the imidization degree is sufficient or not when the thickness of the polyimide film is too high is evaluated.

In the modern underwater wars, the complex and changeable marine environment has great influence on the detection capability of sonar. A surface ship and an antisubmarine helicopter execute search tasks according to respective characteristics and cannot give full play to the advantage of cooperative combat. According to the invention, ship-aircraft cooperative detection method research based on marine environment influence factors is carried out, from an actual scene, an optimization method for sonar detection distance analysis is provided, the actual sonar detection distance of an undetermined search area is visualized, a ship-aircraft cooperative search algorithm is provided, a search platform motion model is established and optimized, and the sonar detection distance of the undetermined search area is optimized. And a key parameter adjustment strategy for enabling the ship-aircraft collaborative search algorithm to reach the maximum search probability is obtained. And selecting the search probability as an evaluation index to carry out an experimental test. Researches show that when a surface ship and an antisubmarine helicopter are in cooperative operation, high detection probability can be stably realized. Therefore, the feasibility and effectiveness of the ship-aircraft cooperative detection method based on the marine environment influence factors are proved.

The invention discloses a multi-surface radiation accelerated pyrolysis combustion experiment device and a test method, and belongs to the technical field of combustible combustion, the device comprises a heating unit, a control unit and a measuring unit; the heating unit comprises a plurality of heating cones and a sample piece box; a sample piece is embedded into the sample piece box, and only a plurality of surfaces are exposed as test heating surfaces; the plurality of heating cones are in one-to-one correspondence with a plurality of test heating surfaces of the sample piece and heat the test heating surfaces; the control unit is used for controlling the heating cone to heat; the measuring unit is used for measuring the surface temperature of the sample piece, the quality of the sample piece and the heat flow of the heating cone and monitoring the state of the sample piece. The device is simple and easy to operate, has high reliability, can realize ignition experiments of two-side heating of edges at different angles and three-side heating of vertexes at different angles, and has high repeatability and accuracy of test results.

The invention belongs to the technical field of simulation calculation, and particularly relates to a metal grounding body underground water corrosion characteristic simulation calculation method, which comprises the following steps: preparing a metal grounding body sample, and preparing an electrolyte; carrying out a polarization curve and electrochemical impedance spectroscopy test, and carrying out data fitting and corrosion kinetic parameter extraction on a test result; establishing a three-dimensional finite element model of the metal grounding body under an actual environment condition based on a polarization fitting curve obtained by data fitting and the extracted corrosion kinetic parameters; and performing grid division, performing simulation calculation on corrosion rates of the metal grounding body under different environmental conditions, and further calculating corrosion rate distribution, thereby realizing corrosion rate prediction of the metal grounding body under the actual environmental condition. According to the method, electrochemical experiment testing and finite element simulation modeling are fused, and the method is suitable for conducting quantitative prediction and material comparison evaluation on the corrosion rate of the metal grounding body in the groundwater environment where different pH values and multiple corrosive anions coexist.

The invention discloses a pressure reconstruction method and system based on error correction and an adaptive grid, and a storage medium. The system comprises a PIV experiment test subsystem, a processing module (comprising a PIV post-processing unit and a pressure reconstruction unit) and the like. The method comprises the following steps: firstly, controlling a laser emitting sheet to irradiate tracer particles in a water tank through a synchronizer, and simultaneously triggering a high-speed camera to capture a particle image sequence at a microsecond-to-millisecond-level time interval; the PIV post-processing unit performs cross-correlation analysis on the image to generate a gridding velocity field; a pressure reconstruction unit solves a pressure Poisson equation based on the velocity field to obtain a preliminary pressure field, then iteratively corrects an error through an error correction mechanism and gradient correlation optimization, and triggers self-adaptive mesh refinement / coarsening according to a pressure / velocity gradient amplitude; and finally, outputting a high-precision pressure field on the optimized grid. The method can be applied to flow field tests and hydrodynamic performance analysis in ship and ocean engineering, especially pressure field reconstruction in a complex flow field, and has a wide application prospect.

The invention relates to the technical field of fabric testing, in particular to an experimental testing method and device for determining the impact resistance of fabric, and the method comprises the following steps: S1, initial calibration: installing the fabric to be tested on a fabric frame, adjusting the tension of the fabric to be tested to a set value through a first electric push rod, starting an electromagnetic suction table to compress a spring to an energy storage state, and starting a second electric push rod; the pressure sensor array module is impacted by a bullet launched in a no-load mode, the process is repeated three times, an impact force calibration value is obtained, and the speed measurement sensor is synchronously calibrated, and S2, testing position switching is conducted, and liquid agar gel is injected into the transparent gel cylinder. According to the invention, through a unique spring system, the linear transmission module is utilized to drive the electromagnetic suction table to move, and the stretching amount of the spring is accurately controlled, so that the accurate adjustment of the projectile launching speed is realized, and the impact at various speeds can be simulated when the impact resistance of the fabric is tested.

The invention provides a method for recovering free hydrocarbon contents of different lithologic shale. The method comprises the following steps: carrying out closed freezing heat release, freezing pyrolysis and freezing multi-temperature-order pyrolysis experiment test analysis on a closed coring well core; performing freezing pyrolysis experiment test analysis on the core of the non-closed coring well; carrying out pyrolysis experiment test analysis on the multi-courtyard core; determining the lithology type of the shale; and recovering the free hydrocarbon content of the shale according to an experimental test analysis result and the lithology type. According to the method, light hydrocarbon loss can be reduced to the greatest extent, the content of free hydrocarbons in different lithology non-closed coring well samples and placed samples is recovered, and the accuracy of shale oiliness evaluation is improved.

The invention relates to a subway emergency evacuation identification system utility test and evaluation method, in particular to a simulation experiment evaluation method based on BIM (Building Information Model), Unity (game engine) and VR (Virtual Reality) technologies. According to the method, firstly, a subway emergency evacuation identification system experiment test platform integrating BIM, Unity and VR technologies is constructed; the platform can simulate the performance of the subway emergency evacuation identification system in a fire emergency event, and assesses different emergency evacuation identification systems. Further, according to the method, volunteers are recruited for experimental testing, and evacuation behavior parameters and visual gazing parameters of passengers are collected and analyzed. Finally, an all-dimensional and multi-dimensional index system is constructed, and the effectiveness of the emergency evacuation identification system is comprehensively evaluated by adopting a coupling coordination degree model, so that the safety, reliability and high efficiency of the emergency evacuation identification system in an emergency are ensured.

The utility model discloses a balance for experimental detection, which comprises an electronic balance shell, four supporting pieces are symmetrically arranged at the bottom of the electronic balance shell at equal intervals, a protective cover is fixedly connected to the top of the electronic balance shell, and ventilation grooves are formed in the opposite interiors of the two sides of the protective cover. A filtering assembly is arranged in each ventilation groove; the filter assembly comprises a mounting frame inserted in the ventilation groove, a dustproof cotton plate and an activated carbon plate, wherein the dustproof cotton plate and the activated carbon plate are mounted in the mounting frame, and the dustproof cotton plate is close to the outer side of the protective cover. Through the above structure, the protective cover can protect the weighing disc so as to reduce interference of dust and other tiny particulate matters in the environment on a detection result, and the ventilation slot can ensure good ventilation in the protective cover so as to prevent a detection environment from being influenced by a humid environment in the sealed protective cover. And dust and moisture can be prevented from entering under the filtering action of the dustproof cotton plate and the activated carbon plate, so that the detection environment can be kept clean.

The utility model discloses a vertical end face contact friction wear testing machine, which belongs to the technical field of tribology research and experimental test, and comprises a base and a mounting rack fixed on the base, the upper end part of the mounting rack is provided with an upper mounting seat, the lower end part of the mounting rack is provided with a lower mounting seat, and the lower mounting seat is fixedly connected with the base. A loading mechanism and a measuring structure are mounted in the mounting frame, the loading mechanism comprises a nut follow-up block, a plurality of through holes are formed in the nut follow-up block, a guide rail, a ball screw and the measuring structure are mounted in the through holes respectively, and the top of the ball screw is connected with a servo motor. The vertical end face contact friction wear testing machine disclosed by the utility model can ensure that the load between samples reaches a preset value and is stable, so that the load control is realized.

The invention belongs to the technical field of pressure sore treatment, and discloses an experimental test method for treating stress injury based on danshen emodin, which comprises the following specific steps: step 1, preparing experimental materials, selecting a healthy SD (Sprague Dawley) rat, and preparing a clean and sterile magnet and a shaver; the traditional Chinese medicine composition is prepared from the following raw materials in parts by weight: 1 part of isoflurane, 1 part of iodophor, 1 part of Vaseline, 1 part of Rhapontigenin and 1 part of resveratrol. The method comprises the following steps: modeling a stress injury model for an SD (Sprague Dawley) rat so as to simulate a stress injury disease, then respectively smearing three medicines, i.e., Danjie emodin, resveratrol and vaseline, tracking the healing condition of a stress injury wound, and finally performing ELISA (Enzyme-Linked Immunosorbent Assay) and Hamp; according to the present invention, the detection analysis is performed through the dyeing E, and the results show that the rheum emodin has good treatment effect on the stress injury, can reduce the expression of the proinflammatory factor, can promote the wound healing, has characteristics of environmental protection and low cost, and provides the new research direction for the treatment of the stress injury.

The invention discloses a structural dynamics model correction method, and belongs to the technical field of model correction. S10, establishing a finite element model of the structure, and setting a correction variable and a value range and an initial value thereof; s20, modal finite element analysis and experimental test value comparison are carried out; s30, if the error between the simulation value and the test value exceeds the allowable range, the step S20 is repeated, and the finite element model is updated; s40, updating the finite element model by utilizing a correction result in the step S30; s50, resetting the correction variable, the range of the correction variable and the initial value of the correction variable; s60, harmonic response finite element analysis and experimental test value comparison are carried out; s70, if the error between the simulation value and the test value exceeds the allowable range, adjusting the correction variable, and repeating the step S60 until the error meets the requirement; and S80, updating the finite element model to complete correction. According to the method, data of a plurality of excitation points and a plurality of response points are included at the same time, the problem of model correction result deviation caused by only using a single excitation point or a single response point at a time is effectively avoided, and the reliability and accuracy of a correction result are improved.

The invention relates to a semiconductor material phonon average free time spectrum reconstruction method and device and a storage medium. The method comprises the steps that S1, response temperature rise changes of a sample under excitation of alternating current heat flows with different heating frequencies omega H are obtained through experimental testing; s2, according to the first-order spherical harmonic function, approximately solving a Boltzmann transport equation to obtain a diffusion type equation, and in combination with a correction slip boundary condition, obtaining an analytical expression of theoretical temperature change of the sample, the theoretical temperature change of the sample is related to the amplitude and frequency of alternating current heat flow excitation, the size of a heater, the average free time spectrum of intrinsic phonons of the sample and the phonon penetration coefficient between the heater and the sample; and S3, after the experimental conditions are substituted, fitting the response temperature rise change and the theoretical temperature change measured by the experiment to obtain the average free time spectrum of the intrinsic phonons of the sample and the phonon penetration coefficient between the heater and the sample to complete the reconstruction of the average free time spectrum of the phonons. Compared with the prior art, the method has the advantages of high speed, high accuracy and the like.