30 results about "Stress evaluation" patented technology

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.

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 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 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.

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.

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.

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 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.

The invention discloses a piezoelectric electromagnetic bimorph sensing structure and a simulation analysis method thereof, and relates to the technical field of sensor design and simulation. The structure comprises a PZT5H piezoelectric layer, an AFC260 alloy elastic blade layer and a PZT5H piezoelectric layer which are stacked in sequence, terminal-ground-terminal parallel excitation is adopted to induce bending vibration, and the resonant frequency can be accurately tuned within the range of 2327 kHz through additional mass. The structure can be further compounded or coupled with a FeGa magnetostrictive layer to form a magnetoelectric sensing unit for non-contact current measurement. According to the matched simulation method, accurate prediction and optimization of resonant frequency, vibration amplitude and stress distribution are realized through parametric modeling, grid encryption, electromechanical / magnetoelectric multi-physics field coupling analysis and stress evaluation. The device is high in integration level and flexible in tuning, remarkably shortens the development period through simulation driving design, improves the reliability, and is suitable for the field of power monitoring and micro sensing.

The invention relates to the technical field of electrical variable measurement, and particularly discloses a dynamic monitoring and evaluating system for the short-circuit bearing capacity of a dry-type power transformer. The system comprises a high-speed data acquisition module, a short-circuit characteristic analysis module, an electrodynamic force calculation module, a mechanical stress evaluation module, a dynamic evaluation decision module and a result output and early warning module, and current and voltage signals are acquired in real time, short-circuit characteristic parameters are extracted, and electrodynamic force and mechanical stress are calculated. And comprehensive evaluation and early warning are carried out in combination with a multi-level threshold value, historical data and a service life attenuation model, so that accurate and dynamic monitoring and health state quantitative evaluation of the short-circuit bearing capacity of the transformer are realized, and the operation safety of power grid equipment is improved.

The present application relates to a method for avoiding fault safety distance in hydraulic fracturing process based on ground stress evaluation. The moment magnitude of earthquake caused by fault activity is calculated by seismic moment. The fault is characterized in a three-dimensional geomechanical model by three-dimensional elements through the fault surface. Firstly, a single fault element is taken to analyze the magnitude of moment magnitude caused by the destruction of the single fault element, and then the total moment magnitude caused by the destruction of the single fault element is analyzed according to the overall fault destruction. The shear strain at the fault surface is calculated. The destruction of the single fault element is calculated. The magnitude of the seismic moment caused by the destruction of the single fault element is calculated. The seismic moment of all destroyed fault elements is summed to obtain the total seismic moment. The magnitude of the moment magnitude caused by the fault activation under different working conditions is obtained. Based on the three-dimensional geomechanical technology, the fault displacement and the response calculation process of the moment magnitude are quantified. The fault activation risk level is evaluated by the response of the moment magnitude, and then the safety avoidance distance of the hydraulic fracturing well position is quantified.

The application discloses a kind of based on the hot spot area recreation stress evaluation and early warning method of tourist space-time track, by processing tourist space-time track and geographic information data, dynamic hot spot area and its space-time characteristics are identified;Further, the real-time recreation stress index is evaluated by fusing multidimensional index, and the space-time graph network is constructed to model the stress propagation relationship;Using pre-trained space-time graph prediction model, the predicted stress index and propagation path of future period can be obtained;Finally, based on the prediction result, generate graded early warning and macroscopic diversion plan, and publish personalized guide strategy through path induction algorithm in combination with individual location information.The application realizes the dynamic and accurate evaluation and prediction of scenic spot recreation stress, can prospectively identify stress conduction risk, and generate coordinated control strategy from macro plan to individual guidance, effectively improve the initiative and fine level of scenic spot management.

A gas pipeline local stress evaluation device disclosed by the present invention comprises an annular shell, the shell sleeves the gas pipeline, at least two deformation detection devices are uniformly distributed on the shell along the radial direction of the gas pipeline, the deformation detection devices are provided with force detection rods, the inner ends of the force detection rods abut against the outer wall of the gas pipeline, and the outer ends of the force detection rods abut against the outer wall of the gas pipeline. The outer end of the force detection rod extends outwards in the radial direction of the gas pipeline, the outer end of the force detection rod extends into an inner cavity of the shell through a first sliding hole formed in the inner wall of the shell, a tension and pressure sensor is fixedly arranged on the inner wall side of the outer side wall of the shell, and the outer end of the force detection rod is connected with the tension and pressure sensor through a spring. The device is used for detecting the deformation of the key part of the gas pipeline, so that a manager can conveniently evaluate the stress borne by the gas pipeline, and data support is provided for the manager to evaluate the health condition of the gas pipeline.

The invention provides a method for evaluating the cooling effect of a cooling flow channel of a PET bottle preform mold, and the method comprises the steps: embedding an ultrasonic thickness measurement sensor array at a key position of the cooling flow channel, obtaining accurate wall thickness and surface roughness data through the combination of signal filtering and wavelet denoising, and achieving the reconstruction of micro-scale geometrical morphology based on a physical information neural network; according to the method, the thermal-mechanical coupling finite element model is dynamically corrected, thermal stress distribution and risk evolution are predicted through the reduced-order model and the long-short-term memory network, finally, a structured thermal stress evaluation report is output, real-time early warning of the mold failure risk is achieved, and the accuracy and prediction capacity of runner wear detection are improved.

The present application relates to the technical field of stress evaluation, and in particular to a stress evaluation method and system based on active physical interaction, which comprises: obtaining passive physiological data, the passive physiological data comprising at least one of HRV data, EDA data, PPG data, blood pressure data, blood oxygen saturation data and sleep quality data; calculating a physiological load level according to the passive physiological data; updating a physiological load baseline according to scenario data; the physiological load baseline being a dynamic threshold for judging whether the stress level is abnormal, which changes with the scenario in which the user is located; and comprehensively determining the stress level of the user according to the physiological load baseline and the physiological load level. The present application can greatly improve the accuracy of stress evaluation of a user by a wearable device, reduce the misjudgment rate and improve the user experience.

The invention relates to the technical field of dynamic modeling, in particular to a digital metal material mold model construction method and system.The method comprises the steps that a finite element model of a mold is constructed, initial grid division is conducted on the finite element model, grid re-division is conducted on the finite element model continuously, newly-added grids and non-newly-added grids are marked after each time of re-division, and a model is constructed; recording the unit stress of each grid at different moments after each time of re-division; calculating a dynamic evaluation value, a stress evaluation value and an evaluation coefficient of each non-newly-added grid, and obtaining a free grid and a fixed grid; determining the quality degradation value of each fixed grid, and obtaining a high-risk grid; and carrying out grid re-optimization on the newly-added grids, the free grids and the high-risk grids after each re-division so as to carry out dynamic modeling on the mold in an analogue simulation process. The simulation precision and reliability of the metal material forming process are improved.

The application discloses a kind of wet clutch thermal characteristic evaluation methods, comprising: (a), the design check and thermal stress evaluation of wet clutch, temperature sensor is installed at the position of each clutch plate of wet clutch maximum stress, to simulate the real stress condition of clutch plate;(b), the cooling characteristics and the consistency of temperature deviation between different clutch plate groups of wet clutch are evaluated;(c), the heat capacity evaluation of wet clutch: check the peak temperature reached by clutch plate under different conditions and the highest temperature difference in each piece appears.The application can effectively reduce the overheat failure of wet clutch in subsequent application process.

The present application relates to the field of boiler water-cooled wall state monitoring, and provides a water-cooled wall stress real-time evaluation and hierarchical early warning method and system, which obtains structure characteristic data, accumulates running time length data and monitoring log information of the water-cooled wall, extracts water-cooled wall running state data, constructs stress evaluation basic data, calculates stress influence correction factors in combination with thermal load fluctuation data, medium flow rate change rate and working condition switching frequency data of the water-cooled wall in a preset time period, dynamically optimizes the stress evaluation basic data according to the stress influence correction factors, obtains more accurate stress evaluation optimization data, compares the stress evaluation optimization data with a preset stress safety threshold, and performs hierarchical early warning. The present application integrates multiple source information, comprehensively considers the influence of equipment body characteristics, real-time state and dynamic working condition, improves the accuracy and response speed of stress evaluation under variable load conditions, realizes real-time monitoring and early risk early warning of the water-cooled wall structure safety state, and provides technical support for boiler safe operation and intelligent maintenance.

The application provides a fish individual and group stress nondestructive in-situ detection system and method, and relates to the technical field of stress evaluation.The system comprises: a multi-modal sensing module using a flexible sensing chip and an impedance hydrogel electrode to collect real-time breathing, environmental and physiological impedance data of the gill and back of a fish body; a rear-end circuit module to complete data collection, processing and wireless transmission; a stress data determination module to perform feature extraction and nonlinear fusion on the screened data based on a multi-modal data fusion algorithm, to quantify fish stress levels and calculate stress fatigue, and to trigger an early warning and generate an environmental control instruction when a high stress threshold is reached.The application realizes non-invasive, high-precision real-time monitoring and closed-loop feedback control of the stress state of fish during transportation, and significantly improves the survival rate of fish transportation.

This invention discloses a method for constructing a stress assessment path for a pressure vessel. The method uses finite element analysis to obtain the node P0 with the maximum stress value on the vessel wall as the starting point of the stress assessment path, and determines the wall surface A1 where P0 is located and its opposite wall surface A2. An initial mesh size t1 is set on the opposite wall surface A2, and a surface mesh N1 is created. The mesh size is then halved to t2, and the surface mesh N2 is re-created. Under different mesh densities, nodes P1 and P2 with the smallest distance from the starting point P0 are found, and their corresponding distances D1 and D2 are recorded. The relative error e between D1 and D2 is calculated and compared with a preset error tolerance value. If the error e is greater than the tolerance value, the mesh size t2 is assigned to t1, and the process returns to re-creating the mesh and finding the nearest node until the error e is no greater than the tolerance value. The straight line segment defined by P0 and the finally determined P2 is used as the stress assessment path for that part of the vessel, thus improving the accuracy of stress assessment.

The invention provides a drilling well track scheme determination method and device, and relates to the technical field of petroleum engineering. The method comprises the steps that track scheme design key parameters and drill column stress parameters corresponding to all well mouths in a to-be-drilled well track scheme are obtained, and track difficulty coefficients and drill column stress evaluation coefficients corresponding to all the well mouths are obtained through calculation; according to the cuttings bed thickness, the drilling period, the drilling cost, the trajectory difficulty coefficient and the drill column stress evaluation coefficient corresponding to each well mouth in the same to-be-drilled well trajectory scheme, target parameters corresponding to each to-be-drilled well trajectory scheme are determined; and scheme evaluation parameters corresponding to the to-be-drilled well track schemes are obtained through calculation according to the target parameters, and a drilling well target track scheme is determined. The device executes the method. The method and the device provided by the embodiment of the invention are beneficial to safely and efficiently executing drilling operation.

The application discloses a kind of space spherical node determination method, system and structure stress evaluation method, by establishing good space measurement control network to carry out space spherical node measurement positioning, to obtain multiple spherical coordinates, according to multiple spherical coordinates indirect adjustment error equation set is established, and the spherical center coordinates and spherical radius of space spherical node are solved to obtain, the fitting accuracy of spherical center coordinates and spherical radius is calculated and iterative optimization is carried out, to finally obtain optimized spherical center coordinates and optimized spherical radius, to realize high-precision positioning to space spherical node. Meanwhile, the optimized spherical center coordinates are converted into the coordinates under target coordinates, to facilitate subsequent structural deformation evaluation to space spherical node. For the space measurement control network established, the total station equipment used is simple and easy to operate, while reducing the requirements for measurement personnel and equipment, the space spherical node determination method of the embodiment of the application also improves the measurement efficiency, realizes contactless measurement positioning.

The application provides a kind of detection and evaluation method and device for fillet weld residual stress of fan tower, electronic equipment and computer readable medium, belong to the technical field of wind power generation equipment detection and evaluation, method includes: obtaining the original load data of fan tower;According to original load data, obtain the target load matrix of bottom section tower;According to target load matrix, determine the residual stress detection point of the fillet weld at the connection of tower wall and door frame, and obtain the three principal stresses of residual stress detection point;Residual stress detection is carried out to residual stress detection point, and residual stress vector data is obtained;Residual stress vector data is orthogonally decomposed to three coordinate axes of local coordinate system, and three residual stress components are obtained;Each residual stress component and the principal stress of corresponding direction are algebraically added, to obtain the synthetic three-way principal stress, and stress evaluation is carried out to fillet weld according to synthetic three-way principal stress.The application improves the accuracy of residual stress detection.

The application relates to the technical field of steel pile stress model analysis, and discloses a steel pile stress model analysis application method under the influence of soil quality and sea conditions. The method constructs a relevant feature set and an index set by collecting multi-dimensional environmental parameters, generates an initial steel pile coupling model, forms a composite stress evaluation model through loading constraint conditions and multi-physical field coupling analysis, constructs a space-time evolution simulation data set based on the stress wave propagation simulation, trains a material failure judgment model to obtain a load optimization analysis model and outputs structure correction parameters, generates environmental disturbance simulation data by using the parameters, constructs a multi-level optimization model to iteratively correct the pile body structure, generates optimal load distribution parameters, and combines real-time monitoring to update the structure optimization strategy. The method can accurately analyze the steel pile stress, realizes structure optimization, and is suitable for steel pile foundation analysis in the fields of marine engineering and the like.

The invention provides a railway bridge hanging basket structure modeling method and system, and relates to the technical field of hanging basket construction.The modeling method comprises the steps that key parameters of hanging basket design are obtained; generating a three-dimensional geometric model according to the key parameters and a hanging basket special component library corresponding to the hanging basket type; performing dynamic simulation of different construction checking calculation stages on the three-dimensional geometric model to obtain a stress evaluation result; adjusting and updating the three-dimensional geometric model according to a stress evaluation result to generate an adaptive model; drawing lightweight identification and drawing labeling processing are carried out on the adaptive model, and a model modeling drawing is obtained; component identification and calculation quantity statistics are carried out according to the adaptive model, and a calculation quantity report is generated; and storing the adaptive model, the model modeling drawing and the calculation quantity report in a knowledge base. According to the method and the system provided by the invention, the accuracy of the hanging basket structure can be improved, the drawing efficiency and the calculation accuracy are ensured, and meanwhile, the design preparation time of other similar hanging basket construction can be shortened.

The invention relates to an assembly stress assessment method for an automobile motor controller PCBA, and the method comprises the steps: obtaining a PCB bare board model through modeling and simplification, and obtaining a stiffness matrix through finite element modeling analysis; then combining the limit tolerance of the mounting point, analyzing strain distribution by using a Monte Carlo method, calculating a Proba value and identifying an extreme value working condition; performing limit strain simulation based on the most dangerous working condition, and determining a high-strain region and component distribution in the region; and finally, calculating the failure probability of the component by combining the Proba value and the component distribution, completing the reliability evaluation of the assembly stress, and further guiding the Layout optimization of the PCB. According to the method, accurate simulation of assembly tolerance randomness, visual positioning of a high-strain area and device distribution and quantitative calculation of the failure probability can be achieved, the problems of welding spot cracks, component pin breakage and the like in the assembly process are effectively solved, the PCBA assembly reliability and the motor controller working stability are finally improved, and a clear and promising guidance basis is provided for PCB Layout optimization.

The invention discloses a deep protolith stress concentration area while-drilling evaluation device and method and a storage medium, and belongs to the technical field of mine safety and disaster prevention and control. The device comprises a drill bit, an exploring tube and a drill rod, the exploring tube is arranged between the drill bit and the drill rod, an acoustic emission sensor, a torque sensor, a thrust sensor and a rotating speed sensor are integrated in the exploring tube, and near-drill-bit synchronous data collection is achieved. The method comprises the following steps: acquiring depth data while drilling; judging whether the coal rock property changes or not according to the acoustic emission signal, and adaptively selecting a stress evaluation model using pure drilling parameters or fusing acoustic emission characteristics and drilling parameters to obtain a single-hole stress profile; and integrating porous data in the working face, and carrying out spatial interpolation inversion and delineating a working face scale protolith stress concentration area. According to the method, continuous, real-time, near-source and multi-parameter fusion evaluation and visualization of the coal rock stress are realized, and efficient technical support is provided for advanced and accurate prevention and control of disasters such as rock burst.

This invention discloses an ultrasonic testing method and system for contact stress on rough surfaces. The method includes: constructing an ultrasonic reflection coefficient-contact acoustic impedance mapping model and a contact acoustic impedance-contact area mapping model for the contact interface; constructing a contact load model for the contact interface under an applied normal load based on fractal theory; obtaining the ultrasonic reflection coefficient corresponding to a perpendicularly incident ultrasonic wave, and calculating the contact load of the contact interface under an applied normal load based on the above models; and thus obtaining the contact stress of the contact interface based on the contact load. This method fully considers the non-uniformity and size effect of rough surfaces, introduces fractal theory into contact acoustic modeling for contact stress evaluation, and realizes real-time, in-situ monitoring of contact stress, effectively overcoming the limitations of traditional detection methods in terms of material adaptability, surface roughness range, and measurement accuracy.

The invention relates to a gas well tubular column flow-induced vibration additional stress quantitative evaluation method, which belongs to the technical field of oil and gas industrial exploitation, and comprises the following steps of: quantitatively calculating and determining a flow-induced vibration excitation load acting on a tubular column based on actual production parameters of a gas well; the excitation load at least comprises narrow-band random excitation generated by vortex-induced vibration and wide-band random excitation generated by turbulence buffeting, establishing a three-dimensional finite element model considering the contact nonlinearity of the tubular column and a wellbore based on an actual wellbore trajectory and tubular column combination, and obtaining dynamic displacement and dynamic stress of each node of the tubular column, all links from an excitation source, structural response to stress evaluation adopt mathematical model quantitative calculation, empirical and qualitative limitations of a traditional method are avoided, the result is more accurate and reliable, an established tubular column system dynamic model fully considers a well track and contact nonlinearity, an excitation load comprises a main flow-induced vibration mechanism, and the flow-induced vibration is more accurate and reliable. And the analysis result can more truly reflect the actual working state of the tubular column.