79 results about "Stress evaluation" patented technology

The invention relates to the technical field of material testing, and discloses a coating performance simulation method based on high and low temperature circulation and prestress loading. The method comprises the following steps: constructing a coating matrix composite geometric model containing a microporous structure by acquiring actually measured working condition data of a pipeline or a part, and quantifying surface roughness and interface curvature characteristics in combination with reverse engineering; a dynamic temperature-pressure coupling equation is generated based on the thermal expansion effect of a high-pressure medium, a micropore optical load is converted into equivalent heat flux density through a ray tracing algorithm, transient boundary conditions of a temperature field and a stress field are associated, a crack initiation path is simulated through an extended finite element method, and a life attenuation curve is predicted in combination with a Paris formula. And material parameters are dynamically corrected based on experimental data, and a multi-parameter collaborative optimization model is generated. According to the method, the problems of interface stress evaluation distortion and life prediction deviation under the combined load are solved, and multi-physics field co-simulation support is provided for coating compression resistance optimization.

The invention discloses a method for evaluating forced vibration stress of a blisk, which relates to the technical field of aero-engines and comprises the following steps: constructing a single-sector finite element model of the blisk and a multi-stage single-channel model of a gas compressor, and carrying out modal analysis containing prestress to obtain a Campbell graph of the blisk, a dangerous mode and a dangerous rotating speed; the method comprises the following steps: calculating steady flow fields of different back pressures at dangerous rotating speeds to obtain working points, respectively carrying out nonlinear harmonic method oscillation flow field calculation and nonlinear harmonic method static interference unsteady flow field calculation at the working points to respectively obtain aerodynamic damping and wake excitation, carrying out dot product on the wake excitation and a dangerous mode to obtain modal force, and carrying out nonlinear harmonic method oscillation flow field calculation and nonlinear harmonic method static interference unsteady flow field calculation on the modal force. And calculating forced vibration complex stress response by adopting a modal force method based on the aerodynamic damping and the modal force so as to obtain real stress response and maximum vibration stress thereof. The blisk forced vibration stress assessment method provided by the invention has important engineering significance for improving the design level and test guidance capability of the blisk.

The invention discloses a stress calculation method of a composite pull disc and a weaving method of the composite pull disc and an insulation rope section, belongs to the field of electric power tools, solves the problem that stress of the composite pull disc is difficult to assess, and adopts the technical scheme that the composite pull disc comprises a pull wire disc and a pull wire, one end of the pull wire is fixed on a tower, and the other end of the pull wire is fixed on the pull wire disc; the stay wire disc is installed on the ground and is used for the upward pulling force acting on the stay wire foundation, the calculated volume weight of soil, the included angle between the stay wire and the ground, the foundation upward pulling stability safety coefficient related to the soil resistance, the upward pulling stability safety coefficient related to the self-gravity of the foundation, the volume of anti-pulling soil in the depth, the upward pulling angle of the foundation and the self-gravity of the foundation. Wherein the upward pulling stability of the stay wire needs to be met. According to the invention, the stress evaluation of the composite pull disc is realized more conveniently.

The invention discloses an ultrasonic-sealed sterile packaging system and method for retort pouches, and relates to the technical field of ultrasonic sterile packaging material forming. The ultrasonic-sealed sterile packaging system for the retort pouches comprises a sealing matching degree monitoring module, an ultrasonic-sealed sterile packaging module and an ultrasonic-sealed sterile packaging module, a sterilization stress monitoring module; a cooling stress evaluation module; and a retort pouch plastic molding qualification monitoring module. According to the method, whether sealing parameter self-adaptive adjustment is adopted or not is determined by conducting sealing matching degree analysis, then sterilization stress evaluation is conducted to determine whether sterilization temperature and pressure adjustment is adopted or not, then cooling stress evaluation is conducted to determine whether retort pouch cooling gradient adjustment is adopted or not, and finally retort pouch plastic forming state qualification verification is conducted. The effect of improving the percent of pass of the ultrasonically-sealed retort pouch aseptic packaging product is achieved, and the problem that the percent of pass of the ultrasonically-sealed retort pouch aseptic packaging product is low in the prior art is solved.

The invention relates to the technical field of operation management, in particular to an airport intelligent global situation awareness and intelligence analysis management method and system. The method comprises the following steps: capturing corresponding global operation data in real time to generate an airport global original data set; performing airport operation map construction and pressure elasticity test analysis on the airport global original data set to generate an airport operation global pressure assessment result; performing airport operation pressure planning and global situation awareness comparative analysis on the basis of an airport operation global pressure assessment result to generate an airport actual operation global situation awareness model; carrying out risk early warning information analysis and airport omnibearing comparison based on the airport actual operation global situation awareness model, and generating an airport global operation process redisk report containing deviation analysis; and performing operation optimization and improvement analysis based on the airport global operation process recovery report to obtain an airport operation global optimization and improvement management scheme. The airport operation efficiency can be remarkably improved.

To provide a stress evaluation system capable of accurately evaluating a stress state of an animal.SOLUTION: A stress evaluation system according to the present invention includes an acquisition unit that acquires biological information of an animal, a storage unit in which a change in the biological information and an evaluation value related to stress are associated with each other, an evaluation unit that evaluates a stress score of the animal from the acquired change in the biological information and the evaluation value with reference to the storage unit, and an output unit that outputs a result of the evaluation. According to such a configuration, the owner can more appropriately manage the health condition of the animal by accurately evaluating the stress state of the animal.SELECTED DRAWING: Figure 1

The invention provides a stress evaluation method and system for a TSV packaging structure, and relates to the technical field of semiconductor packaging, and the method comprises the steps: constructing a global coarse mesh model, cutting to generate a local TSV sub-model, and generating a failure feature mapping table; based on the failure feature mapping table and a preset process temperature curve, coupling solution is carried out on the local TSV sub-model, and a multi-physical field data set is output; training a failure probability prediction model by combining the failure feature mapping table based on the multi-physics field data set, and generating a digital failure atlas template; performing dynamic risk assessment based on the digital failure atlas template, the real-time process parameters and the dynamically calculated electrothermal coupling parameters, and generating a failure risk report; analyzing the failure risk report, and generating a mode-based optimization guide; and performing spatial deviation comparison based on the verification test data executed by the mode-based optimization guide, and when the spatial deviation exceeds a preset threshold value, outputting a failure map version updating mark and triggering the failure feature mapping table to iteratively update.

The invention discloses a flight student pressure assessment system based on fusion of heart rate variability and multi-modal data, and relates to the technical field of flight training. The data acquisition module is used for acquiring heart rate variability data, electroencephalogram data, galvanic skin data and behavior data of a flight student, and constructing a data set after preprocessing; the feature extraction module is used for extracting features from the data set and comprises the steps of extracting time domain features and frequency domain features from heart rate variability, calculating phase synchronism of different electroencephalogram channel signals based on a phase locking value, extracting energy features of each frequency band and decomposing a skin electric signal on different time scales based on wavelet transform; and extracting a baseline value and fluctuation amplitude characteristics. According to the method, the limitation of a single index is broken through by integrating the heart rate variability physiological signal and the limb movement behavior data; the system assists students in cognitive pressure, personalized guidance of coaches and mechanism optimization training, promotes flight training to be changed from experience driving to data driving, and provides early warning measures for high-risk flight students.

The invention relates to the technical field of vibration engineering, and discloses a battery rack welding seam swing working condition stress assessment method and system, and the method comprises the steps: synchronously collecting a vibration response signal and an excitation reference signal of a vibration sensor at a welding seam key point when a container type power supply device is in a swing working condition; performing phase-space reconstruction on the vibration response signal to obtain a vibration signal correlation dimension, and analyzing a dynamic equivalent stress amplitude of the weld joint key point according to the vibration signal correlation dimension; combined vibration deformation analysis is conducted on the vibration response signals and the excitation reference signals, and dynamic strain field distribution corresponding to the weld joint key points is obtained; according to the dynamic strain field distribution and the constitutive relation parameter increment of the battery rack material, iteratively analyzing the dynamic stress time domain process of the weld joint key point; and according to the stress data in the dynamic stress time domain process and the dynamic equivalent stress amplitude, the battery rack welding seam swing working condition stress is determined. According to the invention, the accuracy of battery rack welding seam swing working condition stress assessment can be improved.

The present invention discloses a stress detection method and system for a high pier bridge support structure, which relates to the technical field of stress detection of bridge support structures. The stress detection method for a high pier bridge support structure respectively obtains support state data for each bridge support column in the high pier bridge support structure, analyzes the initial stress index and performs correction processing to obtain the stress comprehensive correction index of the high pier bridge support structure, and makes a judgment and analysis with a preset stress evaluation interval. The present invention dynamically corrects by obtaining the real-time data of each support column and combining various environmental factors. The initial stress index of the support column will be corrected according to the changes in local displacement, local strain and load after each monitoring, ensuring the real-time and accuracy of stress evaluation. This precise correction mechanism can analyze the different stress states of each support column and timely reflect the dynamic changes of the structure.

The invention provides a flight simulation stress assessment method and system based on MR fused AI, and a medium, and relates to the technical field of stress assessment, and the method comprises the steps: constructing a virtual flight environment, fusing a flight simulator with the virtual flight environment, carrying out flight control simulation in the virtual flight environment, and constructing a flight training platform; constructing a stress evaluation model; acquiring real-time physiological data, control data of a flight simulator and simulated flight state data when a pilot executes simulated flight in different flight scenes and different flight stages on a complete time axis in the flight training platform; the real-time physiological data, the control data and the simulated flight state data are extracted to be used for representing mutation characteristics of the cardiovascular stress level, the stress state of the pilot is recognized through a stress evaluation model, and the stress state of the pilot, the flight scene and the flight stage of the stress state and the corresponding stress degree are determined. According to the method, pre-flight stress assessment can be effectively carried out.

The invention relates to the technical field of digital twinning, in particular to a fan blade stress evaluation system based on digital twinning, which comprises a twinning model sensing mapping module, a global stress field resolving module, a stress gradient anomaly diagnosis module and a dangerous section comprehensive evaluation module. According to the method, strain vibration time sequence data associated with wind field load-load intensity are screened, a measured value is taken as a reference, and blade global stress field distribution is calculated by using a spatial interpolation model, so that accurate mapping from a limited sensing point to an overall stress state is realized, and then potential stress concentration points are rapidly positioned according to stress space gradient changes; and then automatically identifying and delineating a dangerous section range by using a density clustering algorithm, and performing weighted summation on gradient values to form a set of comprehensive evaluation indexes which are more objective to the dangerous section.

The present invention discloses a non-destructive testing stress evaluation method based on the static component of non-linear ultrasonic Lamb waves, belonging to the technical field of stress detection, including: S1. Construct a Rayleigh-Lamb equation introducing the non-linear theory of elastic bodies, and then determine the Lamb wave dispersion curve of the plate to be detected, and determine the excitation frequency and excitation mode of the excitation source according to the Lamb wave dispersion curve; S2. Excite the Lamb wave with the determined excitation frequency and excitation mode at one end of the stress detection area of the plate to be detected, and receive and extract the corresponding signal through the other end of the stress detection area; S3. Reverse the phase of the extracted signal, and re-excite and receive the signal with the reversed phase; S4. Process the received signal and calculate the ultrasonic non-linear coefficient as an evaluation parameter for the stress state of the plate to be detected. The fundamental wave frequency and mode of the present invention are more flexible in selection, can measure the relevant parameters of high-attenuation materials, and can effectively evaluate the early damage and stress state inside the materials.

According to the method for constructing the stress evaluation path of the pressure-bearing container, a node P0 with the maximum stress value on the wall surface of the container is obtained through finite element analysis to serve as the starting point of the stress evaluation path, and the wall surface A1 where the P0 is located and the wall surface A2 opposite to the wall surface A1 are determined; an initial grid size t1 is set on the opposite side wall face A2, a face grid N1 is divided, the grid size is halved to t2, and a face grid N2 is re-divided; finding nodes P1 and P2 with the minimum distance from the starting point P0 under different grid densities, and recording corresponding distances D1 and D2; calculating a relative error e between the D1 and the D2, and comparing the relative error e with a preset error tolerance value: if the error e is greater than the tolerance value, assigning a grid size t2 to t1, returning to the step of re-dividing the grid and searching the nearest node until the error e is not greater than the tolerance value, taking a straight line segment defined by P0 and finally determined P2 as a stress evaluation path of the container at the part, and the accuracy of stress evaluation is improved.

The present application relates to the technical field of health monitoring, in particular to a cancer survivor work pressure monitoring system based on big data, which comprises a physiological parameter analysis module, a stress cause analysis module, a work load distribution module and an abnormal stress monitoring module. In the present application, the sensitivity and accuracy of data analysis are improved through the difference analysis of heart rate fluctuation, skin conductance and blood pressure range, the data points with large fluctuations are screened and classified, the efficiency of abnormal data capture and classification is optimized, the stress cause identification accuracy and distribution law insight are improved, the key stress factors are determined through sensitivity sorting, the stress evaluation is more scientific and quantitative, the priority dynamic adjustment is realized in load classification and grouping, the work pressure distribution is optimized, the abnormal stress point monitoring and grading judgment are strengthened, the stress abnormality grade fine monitoring is realized, the data quantification and dynamic monitoring capability are enhanced, the stress management efficiency is improved, and the targeted data support is provided for personalized health intervention.

The application discloses a mould stamping production line intelligent scheduling method, comprising the steps of data acquisition, analysis, calculation, judgment, scheduling I, scheduling II, load reduction, migration and optimization. The application cooperatively monitors the pressure data and temperature data in real time, reduces the probability of stress evaluation deviation caused by pure dependence on pressure data, optimizes the scheduling strategy in time, reduces the probability of energy waste or mold scheduling delay, improves the adaptive adjustment capability of mold scheduling, reduces the waiting time waste by reducing the stamping speed and prolonging the pressure holding time, improves the comprehensive efficiency of the equipment, reduces the production capacity loss, and thus improves the production efficiency of the material.

The present invention provides a damage effectiveness simulation and evaluation system based on model simulation, which relates to the technical field of explosive action simulation analysis. The present invention obtains three-dimensional scanning data of the target simulated explosion physical structure and reconstructs the physical field simulation model of the target object based on the finite element grid, which can accurately restore the force behavior and stress distribution state of the structure in the actual blasting environment. The explosive particle size distribution parameters, terrain geometry factors, shock wave reflection and energy dissipation physical parameters, the first correction and the second correction modules are introduced to correct the explosive pressure field and equivalent stress, breaking through the limitation of traditional simulation models that ignore the complexity of the environment and avoiding evaluation distortion or misjudgment. During the simulation process, the fragile areas of stress concentration in the structure are automatically identified, and the damage level distribution map is dynamically calibrated in combination with the corrected pressure field and stress evaluation, thereby generating hierarchical early warning instructions, providing a scientific basis for engineering protection design, emergency response and risk control.

This invention relates to the field of electrical variable measurement technology, specifically disclosing a dynamic monitoring and evaluation system for the short-circuit withstand capability of dry-type power transformers. The system includes a high-speed data acquisition module, a short-circuit characteristic analysis module, an electrodynamic calculation module, a mechanical stress evaluation module, a dynamic evaluation decision module, and a result output and early warning module. By acquiring current and voltage signals in real time, extracting short-circuit characteristic parameters, calculating electrodynamic and mechanical stresses, and combining multi-level thresholds, historical data, and a lifespan decay model for comprehensive evaluation and early warning, it achieves accurate and dynamic monitoring of the transformer's short-circuit withstand capability and quantitative assessment of its health status, thereby improving the operational safety of power grid equipment.

The invention relates to a stress assessment method for a fusion reactor cladding non-cyclic load in a complex electromagnetic environment, and belongs to the technical field of magnetic confinement nuclear fusion. Comprising the following steps: establishing and simplifying a fusion reactor cladding three-dimensional geometric model, and dividing grids; electromagnetic field distribution is calculated through ANSYS Maxwell to obtain an electromagnetic load, temperature field distribution is calculated through ANSYS CFX to obtain a thermal load, the electromagnetic load and the thermal load are imported into ANSYS Mechical for coupling analysis, and mechanical loads are superposed to obtain a comprehensive stress field; selecting a stress evaluation line of the maximum equivalent stress area along the thickness direction of the structural material, and linearizing the stress tensor; and comparing the total stress value with the allowable stress value based on a non-cyclic load failure mode evaluation criterion. According to the method, the electromagnetic load influence is fully considered, the non-cyclic load performance of the cladding in a complex electromagnetic environment can be accurately evaluated, a reliable basis is provided for safety evaluation and design optimization of the fusion reactor cladding, and the development of a magnetic confinement fusion reactor technology is powerfully promoted.

A computing device includes: an input configured to be coupled to, or carried by, a user of a hearing device, the hearing device configured to receive sound from an environment defined by an acoustic scene; one or more memory units; and one or more processing units; wherein the one or more sensors are configured to measure a stress parameter related to stress of the user, the stress parameter being related to the acoustic scene; wherein the computing device is configured to obtain the measured stress parameter; and wherein the one or more processing units of the computing device comprise a program configured to determine an indication of stress of the user based on at least the stress parameter.

The present invention discloses a method and system for automatically generating a structural stress evaluation path for reactor equipment, including establishing a finite element model of the reactor equipment structure, obtaining the stress distribution of the model by applying arbitrary loads; dividing the area where the evaluation path is to be generated, defining the inner surface node set, extracting the stress intensities of all nodes in the inner surface node set and arranging them in descending order; determining the number of evaluation paths and the intervals of the evaluation paths; determining the inner surface node numbers of the evaluation paths within the intervals of the evaluation paths according to the intervals of the evaluation paths; for the inner surface nodes of each evaluation path, calculating the distances between all outer surface nodes and the inner surface node, and determining the outer surface nodes of the evaluation path by using the principle of the minimum distance; and generating the inner and outer surface node numbers of all evaluation paths in the finite element software according to the inner and outer surface node numbers of each evaluation path. The present invention can realize the automatic generation of the stress evaluation path and completely eliminate the mesh dependence.

The invention relates to the technical field of aircraft repair tolerance design, in particular to an O-shaped ring contact stress evaluation model based on a second-order response surface method and a construction method, and the construction method comprises the steps: 1, building a two-dimensional axisymmetric finite element model based on the structural characteristics of an actuator; step 2, setting material parameters and characteristics of the actuator; 3, performing model test level setting in combination with the influence of different influence factors on the O-shaped ring; 4, establishing an O-shaped ring contact stress analysis model based on a second-order response surface method; and 5, determining a coefficient by using R2, and evaluating and analyzing that the precision of the model established in the step 4 meets the requirement. The problems that when the contact stress of the O-shaped ring is analyzed through a traditional simulation calculation method, the analysis time is long, model convergence is difficult, and complete analysis is still needed again when parameters are changed are solved, a complex pipe system is fitted through few sample points, the analysis rate is remarkably increased, and the calculation cost is reduced.

A computing device includes: an input configured to be coupled to, or carried by, a user of a hearing device, the hearing device configured to receive sound from an environment defined by an acoustic scene; one or more memory units; and one or more processing units; wherein the one or more sensors are configured to measure a stress parameter related to stress of the user, the stress parameter being related to the acoustic scene; wherein the computing device is configured to obtain the measured stress parameter; and wherein the one or more processing units of the computing device comprise a program configured to determine an indication of stress of the user based on at least the stress parameter.

This invention discloses a method and apparatus for stress assessment during the demolition of multi-story bridges, relating to the field of demolition construction technology. The apparatus includes a mobile mechanism with a detection mechanism, an opening mechanism, and a counterweight mechanism at its top. The mobile mechanism also includes a base, with gear A on its side and gear B at its top. A track A is attached to the top of gear B. A connecting plate is mounted on the left side of the base, and a bottom plate is mounted on the left side of the connecting plate. This allows for precise linkage between a sliding block and an adjusting plate, adjusting the infrared detection head to the optimal detection angle and ensuring the stress plate is in close contact with the ground. This automated detection process reduces manpower requirements and avoids data acquisition chaos caused by multiple manual operations, achieving more efficient and accurate detection results and providing more convenient and reliable technical support for bridge maintenance.

The invention relates to a stress reduction method and device for a pipeline circumferential weld and electronic equipment, relates to the technical field of pipelines, and aims to improve the stress reduction efficiency of the pipeline circumferential weld. The method comprises the following steps: determining the axial coercive force and the circumferential coercive force of a measuring point on the circumferential weld of the pipeline; according to the axial coercive force and the circumferential coercive force, determining a stress evaluation result of the to-be-reduced area of the pipeline circumferential weld; the stress evaluation result is used for indicating whether the stress of the to-be-reduced area needs to be reduced; the to-be-reduced area comprises a plurality of measurement points; and under the condition that the stress evaluation result indicates that the stress of the to-be-reduced area needs to be reduced, performing ultrasonic impact treatment on the to-be-reduced area so as to reduce the stress of the to-be-reduced area.

The present application relates to a kind of integrated forming nozzle inner ablation layer residual stress evaluation method, belong to stress evaluation method technical field.The present application solves the technical problems in the prior art, such as the large residual stress of integrated nozzle inner ablation layer, the inability to quantize, the inability to target design iteration optimization, the high difficulty of integrated nozzle design, the high risk of manufacturing, the cracks and delamination of inner ablation layer.The evaluation method of the present application first establishes a basic mechanics model, and then converts the residual stress evaluation of the inner ablation layer into the solution of the secondary hyperstatic problem through the basic mechanics model.The stress evaluation method solves the problems such as the design of structure thickness, winding angle and lay-up angle in the design of integrated nozzle, and significantly reduces the manufacturing risk caused by the design defects of integrated nozzle.

To provide a method for evaluating elastic buckling stress intensity of a lip-groove cross-sectional member when a bending moment acts on the lip-groove cross-sectional member in which only one flange subjected to tensile force is restrained.SOLUTION: In a lip-groove sectional member 10A having a web 11A, a pair of flanges 12A, 13A provided at both ends of the web in the width direction so as to extend in the thickness direction of the web, and a pair of lips 14A, 15A extending from tips from which the pair of flanges extend so as to approach each other, a first flange, which is one of the pair of flanges, is restrained from deformation in the thickness direction and from rotation about the material axis O1 of the lip-groove sectional member, and elastic buckling stress intensity of the lip-groove sectional member in which a bending moment about the strong axis of the lip-groove sectional member is subjected to the lip-groove section member to pull the first flange is evaluated.SELECTED DRAWING: Figure 2

The application relates to a light beam scanning path generation method for additive manufacturing and an application and an electronic device thereof. The method comprises the following steps: dividing at least one scanning area of a layer to be scanned into a plurality of sub-areas; determining a heat accumulation risk value and a stress evaluation value of each sub-area, and assigning weights to the heat accumulation risk value and the stress evaluation value to construct a weight matrix, wherein the heat accumulation risk value is determined according to the distance from the sub-area to the layer boundary and the temperature gradient; and performing sequencing on the scanning sequence of the plurality of sub-areas according to the weight matrix, taking the heat accumulation risk value as a first optimization strategy and the stress evaluation value as a second optimization strategy, generating a light beam scanning path matched with the sequencing, and realizing more optimized scanning path planning, so as to improve the forming quality, size accuracy and mechanical properties of a part, and reduce the risk of thermal deformation and residual stress in the manufacturing process.

The invention discloses a lithium battery diaphragm internal stress rapid assessment method and system, belongs to the technical field of batteries, and solves the problem of how to reduce the operation complexity and equipment cost of a lithium battery diaphragm stress assessment method. Comprising the following steps: S1, cutting a sample from a lithium battery diaphragm to be detected, and marking an initial size; s2, on the basis of a stepped heating method, performing stepped constant-temperature heating treatment on the sample at a plurality of different temperature stages, inducing staged release of internal stress of the sample, and measuring the size of the sample after heating treatment; s3, on the basis of the initial size and the size obtained after heating treatment, the corresponding heat shrinkage change rates of the sample in different temperature stages are calculated, and the internal stress level of the diaphragm is directly evaluated according to the change trend of the corresponding heat shrinkage change rates in all the temperature stages; the stepped heating temperature stage is designed to correspond to stress release of different energy levels, the accuracy of diaphragm stress evaluation is effectively improved, complex instruments are not needed, and the method has the advantages of being easy to operate, low in equipment cost and high in evaluation speed.

The invention belongs to the field of petroleum geological exploration reservoir evaluation, and discloses a leakage longitudinal wave-based anisotropy and ground stress evaluation method and related equipment.The method is mainly applied to a slow stratum, and comprises the following steps: firstly, extracting a leakage longitudinal wave, and obtaining a fast wave and a slow wave through four-component waveform data of the leakage longitudinal wave; then obtaining an auxiliary fast wave time sequence, an auxiliary slow wave time sequence and an auxiliary fast and slow wave waveform according to the fast wave and the slow wave, carrying out fast and slow wave matching processing based on a waveform matching method to obtain fast wave slowness and slow wave slowness, and finally obtaining leakage longitudinal wave anisotropy according to the fast wave slowness and the slow wave slowness. Anisotropy and ground stress evaluation is realized; according to the method, the cross dipole leakage longitudinal waves which are easy to extract are acquired, and based on the similarity of the waveforms of the fast and slow waves in the longitudinal waves, a waveform inversion method is used, and combined superposition of array sound wave data is fully utilized to suppress noise, so that the calculation precision and stability are improved, and accurate and reliable stratum anisotropy and ground stress evaluation is realized.