48 results about "Static stress" patented technology

The invention provides a deep coal seam roadway surrounding rock stability intelligent early warning method, and relates to the technical field of coal mine dynamic disaster prevention and control. According to the intelligent early warning method for the stability of the surrounding rock of the deep coal seam roadway, a basic sample library is constructed through a dynamic and static combined loading rock test; synchronously collecting field surrounding rock static stress and micro-seismic data and carrying out time sequence polymerization; constructing an equivalent dynamic and static combined stress index based on a dynamic and static load superposition principle, and forming a seismic-force coupling feature vector; establishing an LSTM early warning model, adopting a transfer learning strategy, pre-training by using laboratory data, and then performing fine tuning by using field data; inputting the real-time feature vector into a model and outputting an instability probability; and verifying and correcting the probability based on actual deformation data of the surrounding rock, and applying a missing report sample to online incremental updating of the model. According to the method, the dynamic and static load coupling effect is quantified, the difficulty of small sample training is overcome, and accurate and self-adaptive early warning of the deep roadway surrounding rock instability risk is realized through a physical feedback closed-loop correction mechanism.

The invention discloses a method and a device for determining assembly fastening force of a bolt joint part, and relates to the technical field of intelligent manufacturing. The method comprises the steps that three-dimensional point cloud measurement data of a target joint surface are acquired, and the three-dimensional point cloud measurement data comprise geometric distribution error data and / or position error data; generating a target digital twin model according to the target three-dimensional point cloud measurement data; according to the target digital twin model, stress states of a target joint part corresponding to the target joint surface are simulated, and the stress states comprise a static stress state and / or a dynamic stress state; and according to the stress state simulation information, determining a target assembly fastening force of the target joint part. According to the method, the manual dependence degree in the bolt joint part assembling fastening force determination process can be reduced, so that the labor cost in the bolt joint part assembling fastening force determination process is reduced, and the determination precision and the determination efficiency of the bolt joint part assembling fastening force can be improved.

This invention relates to the field of blade crown structure technology and discloses a method for designing the oblique cut angle of crowned blades. By defining the direction and magnitude of the oblique cut angle of the crowned blade and defining evaluation parameters for the rationality of the static design of the crowned blade, simulation models of crowned blades with different sizes and directions of oblique cut angles on the crown contact surface are constructed. Static analysis is performed on the simulation models, and the oblique cut angle and magnitude of the contact surface are determined based on the static evaluation parameters. This invention solves the problems of excessive static stress in the blade due to pre-twist during assembly of crowned blades and crown misalignment due to rubbing. In particular, it addresses the following issues: for short blades with crowns and small aspect ratios and large torsional stiffness, even a small pre-twist angle design can still result in excessive stress. Reducing the pre-twist angle makes it difficult to ensure that the pre-twist angle tolerance meets requirements during processing and assembly. Using traditional improvement methods requires significant modifications to the blade, limiting engineering applications and affecting other blade performance.

The invention relates to the field of blade damping design, in particular to a blade root collision damping design method. Performing finite element analysis on the blade structure, and determining a non-bearing surface area of the blade root of the blade; performing finite element analysis on the wheel disc structure to determine a non-bearing surface area of the wheel disc; according to the non-bearing surface area of the blade root or the non-bearing surface area of the wheel disc, a damping groove position structure is designed; according to the position structure of the damping groove, the appearance and the placement mode of the collision damping body are designed, and it is ensured that the collision damping body has a collision gap in the damping groove; the blade-wheel disc containing the damping grooves and the collision damping bodies is assembled, and an assembly body is obtained; according to the method, static stress and modal analysis is conducted on the blades and the wheel disc, the non-bearing surface area is recognized, it is guaranteed that the structural strength of the blades is not affected by forming of the damping grooves, interference on the blades is further reduced, and the integrity and fatigue life of the blades are guaranteed.

The present invention discloses a method for analyzing the thermal shock resistance of ceramic-based composite (CMC) turbine guide blades. The method comprises the following steps: first, establishing a geometric model reflecting the process characteristics of CMC turbine guide blades; second, performing transient flow-thermal coupling calculations on the CMC turbine guide blades under given operating conditions to obtain the temperature variation of the blades over time; third, defining the material properties and principal unit directions of the CMC turbine guide blades and performing meshing; fourth, performing quasi-static stress calculations on the CMC turbine guide blades using the node temperature at a certain moment as the thermal load; and fifth, performing progressive damage analysis at a typical moment to determine the damage location and failure mode of the CMC turbine guide blades. This method fills a gap in the existing thermal shock resistance analysis methods for CMC turbine guide blades, taking into account the influence of anisotropy on the thermal, mechanical, and nonlinear mechanical properties of CMCs, and accurately predicting the thermal shock damage location and failure mode of CMC turbine guide blades.

This invention provides a method and system for predicting the long-term strength of hard rock under the influence of dynamic disturbance frequency in true triaxial tests, relating to the field of deep engineering safety evaluation technology. The method includes: acquiring dynamic disturbance parameters, rock compression process data, and fracture morphology data from long-term dynamic disturbance true triaxial tests; constructing characteristic curves based on the rock compression process data; performing equivalent static mapping based on the dynamic disturbance parameters and characteristic curves to obtain the equivalent static stress state under the limiting frequency condition; fitting the equivalent static stress state to obtain the predicted long-term strength value under the equivalent static condition; constructing a model based on the characteristic curves and fracture morphology data to obtain a multi-dimensional criterion score; and judging and correcting the predicted long-term strength value based on the multi-dimensional criterion score to obtain the output result. This invention achieves quantitative characterization and accurate prediction of the long-term strength under true triaxial conditions for the influence of high-frequency, long-term dynamic disturbances.

The invention discloses a construction method and device for a spindle box of a horizontal machining center, and relates to the technical field of horizontal machining centers. Static stress and inherent frequency of a saddle structure are determined according to stress analysis of a first dangerous point position; the primary optimization model of the spindle box is determined based on the static stress and the inherent frequency of the saddle structure and the additionally arranged guide rail mounting surface, and the accuracy of the primary optimization model of the spindle box is improved. Therefore, a quadratic optimization model of the spindle box is determined based on the first dangerous point position, the second dangerous point position and the strain data of the guide rail mounting surface; determining each damage event based on impact simulation of the secondary optimization model of the spindle box; determining an optimization report based on each destruction event and the corresponding destruction data; and the final model of the spindle box of the horizontal machining center is constructed based on the optimization report, the secondary optimization model of the spindle box and the corresponding form, so that the accuracy of the final model of the spindle box of the horizontal machining center is improved.

This invention relates to the field of vehicle technology and discloses a method, apparatus, device, and storage medium for determining the CAE performance of a sleeper structure. The method includes: acquiring damage parameters of the sleeper structure located inside the vehicle; determining CAE performance analysis materials based on the damage parameters of the sleeper structure; setting static stress-stiffness analysis conditions for the upper and lower sleepers based on the damage parameters of the sleeper structure; and analyzing the CAE performance of the sleeper structure based on the static stress-stiffness analysis conditions for the upper and lower sleepers. By determining the CAE performance analysis materials based on the damage parameters of the sleeper structure located inside the vehicle, and then performing analyses on the set static stress-stiffness analysis conditions for the upper and lower sleepers respectively, the accuracy of analyzing the CAE performance of the sleeper structure can be effectively improved, and the development cycle and cost can be reduced.

The invention discloses a coal mine adjacent goaf roadway surrounding rock load determination and impact instability judgment method, which comprises the following steps: establishing an adjacent goaf working face initial pressure and full mining stage working face roof structure model, an adjacent goaf working face initial pressure and full mining stage working face roof three-dimensional model and adjacent goaf roadway three-load superposition schematic; the adjacent goaf roadway surrounding rock load-bearing characteristics and the roof fracture load transfer rule of the adjacent goaf working face at different mining stages are analyzed; a method for calculating lateral static load stress of an adjacent goaf, advanced static load stress of the adjacent goaf and fracture dynamic load of an overlying thick and hard rock stratum borne by surrounding rock of the adjacent goaf roadway in different mining stages of the adjacent goaf working face is provided, and the load bearing state of the surrounding rock of the adjacent goaf roadway is quantitatively represented; according to the method, the adjacent goaf surrounding rock impact instability criterion is provided, the adjacent goaf surrounding rock stability is theoretically analyzed, the adjacent goaf rock burst prevention and control thought and method are analyzed based on the impact instability criterion, and the method has important theoretical and practical significance on adjacent goaf rock burst prevention and control.

The invention discloses a sealing performance evaluation method and device of a sealing structure, relates to the technical field of liquid rocket engine research, and aims to solve the problem of poor accuracy of sealing performance evaluation of the sealing structure in the prior art. The method comprises the steps of obtaining static stress load data of a target sealing flange structure in a target liquid rocket engine; based on the static stress load data, determining wear parameters between a soft coating and a flange contact surface in the target sealing flange structure by using a soft coating friction wear analysis model; the soft coating frictional wear analysis model is an analysis model obtained by at least performing grid ALE self-adaption on a grid corresponding to a soft coating of a target sealing flange structure in the two-dimensional axisymmetric finite element model and setting a grid node motion control mode; based on the wear parameters, evaluating the sealing performance of the target sealing flange structure; therefore, the accuracy of evaluating the sealing performance of the sealing structure is improved.

The present invention belongs to the technical field of gear design and analysis, and discloses a gear tooth root crack simulation analysis method based on high-cycle fatigue testing. The method comprises the following steps: fixing a test spur gear on a high-frequency fatigue testing machine via a fixture; performing a fatigue test on the test spur gear and collecting vibration signals and image data; analyzing the data to obtain test crack path data L1 and initial crack angle; establishing a finite element simulation model, performing static stress simulation to obtain stress distribution and extract the position of maximum bending stress at the tooth root; establishing a tooth root bending fatigue crack propagation simulation model to obtain simulated crack propagation path data L2; adjusting the crack implantation position and initial crack propagation angle parameters in the crack propagation simulation model, and repeating the simulation until an error condition is satisfied between L2 and L1; and performing tooth root crack propagation simulation based on the optimized crack propagation simulation model. The present invention can analyze the initiation and propagation evolution of spur gear tooth root cracks under multiple working conditions.

The application provides a bridge structure monitoring system and method combined with active early warning, dynamic stress data and static stress data of each bridge monitoring point in a bridge section are acquired, a plurality of fatigue stress spectra are constructed according to the dynamic stress data at each bridge monitoring point, a damage accumulation coefficient of the bridge structure at each bridge monitoring point is determined according to the stress distribution difference between the fatigue stress spectra, a plurality of monitoring key points are extracted by combining all the damage accumulation coefficients with the dead load characteristics of the bridge section, the bridge structure stiffness corresponding to each monitoring key point is determined by the static stress data of each monitoring key point, a confidence interval for active early warning of the structural damage of the bridge section is determined by all the bridge structure stiffnesses, and the structural damage of the bridge section is early warned based on the confidence interval and the current bridge stress at each bridge monitoring point. The application can realize accurate early warning of the bridge structure damage under the influence of multi-dimensional load response.

The invention provides an ore body static stress characterization and blasting method, and belongs to the technical field of mine engineering blasting. The method comprises the following steps: testing ground stress distribution characteristics of a stope ore body by adopting a hydraulic fracturing method, and obtaining horizontal maximum principal stress, horizontal minimum principal stress and vertical stress of a plurality of measuring points in the stope ore body; establishing a three-dimensional finite element model of the stope ore body, and applying the average horizontal maximum principal stress, the average horizontal minimum principal stress and the average vertical stress of a plurality of measuring points in the stope ore body to the model for solving; calculating a static stress influence coefficient according to the solving result; dividing static stress influence degree grades according to the values of the static stress influence coefficients, and generating a static stress influence coefficient cloud picture; and determining blasting parameters of the stope ore body according to the static stress influence coefficient cloud picture and the static stress influence degree grade. According to the internal stress level and the stress difference degree of the ore body, the static stress influence coefficient is calculated for blasting parameter design, and the blasting efficiency and safety are improved.

The present invention discloses a method for determining the buffering performance of a buffer material, which belongs to the technical field of calculating the buffering parameters of buffer materials. The method comprises the following steps: determining a value range of the unit volume deformation energy of the buffer material; selecting n unit volume deformation energies within the value range; determining a set of test data for each unit volume deformation energy to obtain n sets of test data, each set of test data including static stress, the drop height of a mass block, and the thickness of the buffer material; performing a drop test based on each set of test data, and collecting the peak acceleration of the mass block during the test to obtain multiple sets of peak accelerations; determining multiple sets of dynamic stresses based on the multiple peak accelerations; and performing exponential function fitting on the multiple sets of dynamic stresses and the n unit volume deformation energies to obtain the buffering performance of the buffer material. The present invention can improve the efficiency of determining the buffering performance of the buffer material, saving time and effort.

The application discloses a dynamic-static coupling observation system based on a double-mode stress response and a data processing method, platform and storage medium thereof; a double-mode test piece is constructed by combining a transparent photoelastic matrix and a force-induced luminescence sensing layer, and strict time-sharing gate control of dynamic loading and delayed phosphorescence acquisition is realized by means of a time sequence controller, so that transient stress wave observation and static stress memory are integrated in the same system; not only the ability of a traditional photoelastic instrument to record the whole process of stress wave propagation in real time is retained, but also the fundamental limitation that the traditional photoelastic instrument cannot identify a plastic zone is broken through, and full-field quantitative distinction of an elastic zone, a plastic zone and a rupture zone is realized. Meanwhile, the phosphorescence lifetime which is not sensitive to interference is used as a main parameter to inverse stress peak value, a reliability evaluation system based on stripe quality, fitting residual error and registration error is established, and the robustness and reliability of measurement results are improved, so that an advanced observation method with complete information, high precision and mutual verification is provided for explosion mechanics and material impact damage research.

The invention relates to the technical field of rock mechanics testing, and discloses a dynamic and static combined loading rock critical energy consumption density testing method. The method comprises the following steps: preparing and screening a rock test piece, fixing the rock test piece between an incident bar and a transmission bar of the split Hopkinson pressure bar system, and ensuring that the incident bar and the transmission bar are coaxial; applying confining pressure and axial pressure to the test piece to enable the test piece to be in a preset three-dimensional static stress state; starting the system, setting initial impact air pressure to impact the test piece, and collecting a strain signal; determining a critical impact air pressure and a corresponding critical strain signal which enable the test piece to reach a set damage state; and crushing energy consumption is calculated based on the critical strain signal, and critical energy consumption density is obtained through conversion. The method fits the actual stress scene of the rock, improves the accuracy and reliability of the test, and can provide technical support for the design and construction of underground engineering.

This application relates to the field of fatigue life prediction technology, specifically to a method and system for predicting the fatigue life of automotive seat hardware molds. The method includes: obtaining the fillet radius, sheet thickness, and load spectrum; thereby obtaining the fillet radius and sheet thickness for a batch; obtaining the static stress concentration factor based on stress analysis, and adjusting it using the fillet radius and sheet thickness to obtain the dynamic stress concentration factor; obtaining the actual equivalent stress by weighting the collected nominal stress and residual stress using the dynamic stress concentration factor; further obtaining the strain amplitude; obtaining the material fixation characteristics of the mold material, and constructing an equation using the stress characteristics, material fixation characteristics, and strain amplitude to obtain the cycle life; determining the damage value based on the cycle life to obtain the remaining fatigue life. This application improves the accuracy of fatigue life prediction.

The invention provides an anti-seismic evaluation method and device for a sluice gate of a nuclear power plant, electronic equipment and a storage medium. The anti-seismic evaluation method comprises the steps of obtaining gate structure parameters, pool geometric parameters and seismic oscillation parameters of a target sluice gate; according to the geometric parameters and the seismic oscillation parameters of the pool, calculating vertical dynamic water pressure, horizontal dynamic water pressure and liquid oscillation pressure acting on the target sluice gate; calculating the dynamic water load stress of the dynamic water load according to the vertical dynamic water pressure, the horizontal dynamic water pressure and the liquid oscillation pressure; calculating the structure inertia stress of the target sluice gate based on the water body additional mass, the gate structure parameters and the seismic oscillation parameters; the static stress of the target sluice gate under the static load is calculated according to the sluice gate structure parameters and the pool geometric parameters; calculating the target total stress of the target sluice gate according to the dynamic water load stress, the structural inertia stress and the static stress; and carrying out anti-seismic evaluation on the target sluice gate according to the target total stress. According to the invention, the calculation efficiency and accuracy of anti-seismic evaluation can be improved.

The application relates to the technical field of finite element analysis, in particular to an elevator load-bearing performance analysis method, system and equipment based on finite elements, which comprises the following steps: collecting vibration frequency, deformation displacement and total weight of a car in real time during elevator operation; analyzing vibration frequency correlation and weight fluctuation characteristics during a load interaction period from door opening to door closing, obtaining a first resonance characteristic value; analyzing weight mutation degree and deformation displacement recovery difference during the period, obtaining a second resonance characteristic value; and fusing the two characteristic values to generate a correction factor to adaptively correct the static stress of a finite element model of a load-bearing beam. The application solves the problem that existing finite element static analysis cannot capture the stress calculation deviation caused by mine elevator resonance and heavy load impact, and improves the accuracy of elevator load-bearing performance analysis.

The present invention provides a method for load analysis and low-cycle fatigue life prediction of helicopter flange bolts. The method comprises: performing load analysis based on the distribution form of the helicopter flange bolts to calculate the maximum load value of the flange bolts; calculating the maximum local stress of the helicopter flange bolts based on the maximum load value of the flange bolts, the first thread circle of the helicopter flange bolts, and the minimum cross-section of the bolt head; obtaining a method for expressing the low-cycle fatigue static stress and dynamic stress of the flange bolts based on the maximum local stress of the helicopter flange bolts; obtaining an expression for the low-cycle fatigue equivalent dynamic stress of the helicopter flange bolts based on a life model, the low-cycle fatigue static stress and dynamic stress of the flange bolts, and evaluating the low-cycle fatigue life using a full-range S-N curve.

The present invention discloses a safety assessment method for the metal structure of hydraulic gantry cranes and bridge cranes, comprising: dividing assessment units according to the structure of the assessment object, preliminarily determining the welds and corrosion conditions by visual inspection and marking key locations in the assessment units; performing non-destructive testing on the welds at the key locations marked by visual inspection in the assessment units with the aid of special equipment; performing corrosion detection with the aid of the equipment; performing full-size three-dimensional solid modeling on the steel beam structure, and performing static analysis using ANSYS, wherein fixed constraints are added to the key structures according to the walking characteristics of the steel structures of gantry cranes and bridge cranes, and different loads are added according to actual working conditions, and after the static analysis is solved, the solution results are analyzed using a post-processing tool to determine the most dangerous stress point of the metal structure of the assessment object under each working condition; performing on-site static stress measurement; and determining a comprehensive conclusion. The present invention solves the problem of safety assessment of the metal structure of hydraulic gantry cranes and bridge cranes.

The present application relates to the technical field of power equipment status monitoring, and specifically provides a method and system for monitoring the clamping degree of power fittings, the method comprising the steps of: synchronously acquiring comprehensive stress data of the power fittings, first ambient temperature data, and first load current data of the transmission line; calculating a first thermally induced stress component caused by ambient temperature changes and a second thermally induced stress component caused by the Joule heating effect of the load current based on the first ambient temperature data, the first load current data, and preset material properties corresponding to the power fittings; calculating a static stress component reflecting the clamping force of the power fittings based on the comprehensive stress data, the first thermally induced stress component, and the second thermally induced stress component; obtaining the current clamping degree of the power fittings based on the static stress component analysis; the method can effectively separate the signal generated by the Joule heating effect of the ambient temperature and the load current from the static stress component reflecting the actual clamping force of the power fittings in the mixed signal collected by the stress sensor.

The application provides a rotary steering fatigue life prediction method and system considering dynamic characteristics. The method establishes a three-dimensional structure model based on a set target test structure, analyzes dangerous points based on a static finite element simulation model combined with a set test well section, and determines the static Mises stress of each point. A dynamic boundary load is introduced to construct a dynamic finite element simulation model to analyze the dynamic Mises stress of each point. The dynamic load addition coefficient of each point is calculated according to the dynamic maximum stress and the static stress. In addition, the dynamic load characteristics at each point are analyzed from the aspects of the drilling pressure, torque and bending moment. The fatigue characteristics of the structure corresponding to the dangerous point are analyzed according to the material. A linear damage accumulation operation model is designed, the above calculation results are comprehensively taken as inputs, and the fatigue index value is calculated for multiple rounds, so as to determine the fatigue life of the whole string tool. The scheme can overcome the defects of the prior art, such as incomplete angle calculation and insufficient accuracy, fully considers the dynamic load characteristics and the material characteristics of different structures, and realizes accurate prediction.

The invention discloses a pipeline stress on-line detection method, belongs to the technical field of pipeline detection, and relates to a full-link technical scheme of'detection target-stress type-characteristic data-special model 'which is reversely constructed from'multivariate detection target' (such as fatigue life evaluation, defect safety monitoring and sudden impact early warning) of pipeline safety operation. According to the method, multiple most suitable detection technologies are intelligently selected and fused, multi-physics sensing technologies such as optics (FBG), acoustics (ultrasound) and vibration (acceleration) are fused, and static stress, local peak stress and dynamic alternating stress can be synchronously captured for a composite target; according to the invention, targeted, differentiated and collaborative online monitoring of stress states of different stress types and different risk parts is realized, the inherent defects of single sensing dimension and existence of a monitoring blind area of a single technology (such as only magnetism or only vibration) are effectively overcome, and the refinement and intelligence level of pipeline safety management is improved.

The application relates to the field of helicopter structure strength design, in particular to a fatigue stress calculation method based on helicopter structure vibration. The method comprises the following steps: performing frequency spectrum analysis on the time domain data of vibration measuring points on the body to obtain the frequency response results at typical vibration measuring points; determining the main damage frequency and acceleration amplitude of the main damage of the structure according to the frequency response results at the typical vibration measuring points; determining the structural natural modal frequency closest to the main damage frequency and the working modal corresponding to the structural natural modal as the working modal under the main damage frequency based on the main damage frequency and in combination with the finite element modal analysis results of the body; taking the measuring point as the reference, performing equivalent displacement analysis according to the acceleration amplitude and the working modal mode, and converting the acceleration amplitude into equivalent displacement distribution and direction under the condition that the phase angle of the working modal mode is kept unchanged; and performing equivalent stress calculation according to the equivalent displacement distribution and direction and the finite element model of the structure to obtain the static stress.

The invention provides a crane girder safety monitoring system and method, and the system comprises a strain gauge sensor which is disposed on a crane girder. The data acquisition unit is in communication connection with the strain gauge sensor and is used for acquiring resistance information of the strain gauge sensor; the data acquisition unit is in communication connection with the central processing unit, and the central processing unit obtains the dependent variable of the crane girder based on the resistance information; the central processing unit is in communication connection with an alarm unit; the central processing unit compares the dependent variable of the traveling crane girder with a preset strain threshold value, and when the dependent variable of the traveling crane girder is larger than the strain threshold value, the central processing unit sends alarm information to the alarm unit. Dynamic stress monitoring and static stress monitoring can be carried out on the crane girder in real time, the stability of safe operation of the crane girder can be improved to a great extent, and unexpected safety accidents are reduced.

The application discloses a sealing performance evaluation method and device of a sealing structure, and relates to the technical field of liquid rocket engine research, to solve the problem of poor sealing performance evaluation accuracy of the sealing structure in the prior art. The method comprises the following steps: obtaining static stress load data of a target sealing flange structure in a target liquid rocket engine; based on the static stress load data, determining wear parameters between a soft plating layer and a flange contact surface in the target sealing flange structure by using a soft plating layer friction and wear analysis model; the soft plating layer friction and wear analysis model is an analysis model obtained after at least grid ALE self-adaptation and setting of a grid node motion control mode are performed on a grid corresponding to the soft plating layer of the target sealing flange structure in a two-dimensional axisymmetric finite element model; and based on the wear parameters, evaluating the sealing performance of the target sealing flange structure; thereby the accuracy of evaluating the sealing performance of the sealing structure is improved.

The utility model discloses an indoor simulation device for pipeline deformation under active instability of a self-balancing shield excavation face. The indoor simulation device comprises a test module and a monitoring module. The uncovered test box body is made of a transparent organic acrylic glass plate, and a round hole and a square hole are formed in the front face of the model box and used for fixing a model tunnel and shield tunneling. And the shield tunneling device is provided with a connecting screw rod, a hexagon nut is screwed into one side of the connecting screw rod, and active instability of the tunnel excavation face is controlled by rotating the hexagon nut. A reaction frame is arranged on the front side of the test box body, one side of the reaction frame makes contact with the threaded rod, and reaction force is generated and provided for the piston rod to drive the supporting plate to retreat. And the monitoring module comprises a strain gauge, a settlement rod, a dial indicator, a thin film pressure sensor, a control circuit board, a static stress-strain test analysis system and a real-time monitoring computer. The device has the advantages of simple structure, convenience in installation, capability of reducing the workload of experimenters, capability of improving the test efficiency, real and reliable experimental data, real-time monitoring and the like.

The embodiment of the invention provides a strength analysis method and device for a pipeline system of a carrier rocket, and the method comprises the steps: calculating the static load response of the pipeline system, obtaining a static load analysis result, and judging whether the static load analysis result meets a preset static load strength condition or not; the dynamic load response of the pipeline system is calculated, the maximum dynamic stress is obtained, the maximum static stress is used for correcting the maximum dynamic stress, the corrected maximum dynamic stress is obtained, and whether the corrected maximum dynamic stress meets the preset dynamic load strength condition or not is judged; when it is determined that at least one of the preset static load strength condition and the preset dynamic load strength condition is not met, the pipeline system is optimized, the corrected maximum dynamic stress is closer to a true value in a maximum stress correction mode, the corrected maximum dynamic stress is closer to the true condition as a basis for dynamic load strength analysis, and the dynamic load strength analysis accuracy is improved. Deviation caused by analysis purely based on the maximum dynamic stress is avoided, judgment conditions are preset in the static load aspect and the dynamic load aspect, and therefore the judgment result better meets the actual requirement.

The invention provides a real-time monitoring method and device for amorphous characteristics of an airborne system under a dynamic load, and belongs to the technical field of structural health monitoring. The device is used for monitoring crystallization transformation caused by flight load of an amorphous alloy test piece through a controllable stress-corrosion simulation electrolysis system after off-site sampling of the amorphous alloy test piece subjected to dynamic load in an airborne environment. The device adopts a single-cavity structure; a sample serves as one side wall of a cavity to form a wall type working electrode, and the back surface is sealed and supported by a solid back plate, a flange and an O-shaped ring; a reference electrode, a counter electrode, a thermocouple and a magnetic stirrer are arranged in the cavity. By adjusting temperature, solution components and external static stress, an airborne environment can be simulated, and high-precision measurement of corrosion current, interface resistance and electrochemical noise of a test piece is realized, so that the stability of an amorphous structure and the degradation degree of corrosion resistance of the amorphous structure after dynamic loading of an airborne system are judged. According to the scheme, operation is easy and convenient, the structure is compact, repeatability is good, and rapid off-position evaluation and airborne component quality tracing are facilitated.