89 results about "Differential stress" patented technology

The application discloses a composite material structure bushing reinforcing method based on electromagnetic loading, which uses electromagnetic loading to complete the bushing reinforcement of the composite material structure, and obvious beneficial effects are obtained compared with traditional methods. The method proposes a process parameter calculation method for the reinforcement process of the structure to solve the problem that existing devices and methods cannot be applied to the bushing reinforcement of the composite material structure. The radial compressive stress around the hole is obtained through the Lame formula and the elastic stress-strain relationship of the composite material, and then the total resistance of dynamic extrusion friction in the reinforcement process is obtained through the Coulomb friction theory, and the process parameters are determined in combination with the mathematical model of the electromagnetic force. The application can realize the calculation of the reinforcement process parameters of the composite material bushing with different structures and sizes, and is used for guiding the reinforcement of the dynamic cold extrusion composite material bushing structure.

Novel hybrid tunnel boring methods, systems, and apparatuses are described. Example hybrid methods integrate (a) thermal processing, e.g., preconditioning and / or thermal spallation (which may be used as pre-treatment), and (b) mechanical processing while boring tunnels in rock and other formations. Thermal processing and mechanical processing may be used alternatively or simultaneously. For example, the preconditioning may use thermal energy to induce thermal shock and weaken the rock (e.g., cause expansion stress, micro-fractures, thermal spallation, etc.). This preconditioning changes the relevant properties of the rock relative to the additional (e.g., mechanical) excavation, including, among other things, effective compressive stress, abrasion properties, and hardness. This preconditioned rock can therefore be efficiently removed using mechanical drilling tools, resulting in, for example, faster boring speeds, reduced tool wear, enhanced precision, and longer deployment lengths (e.g., in comparison to conventional TBM and especially MTBM approaches).

Novel hybrid tunnel boring methods, systems, and apparatuses are described. Example hybrid methods integrate (a) thermal processing, e.g., preconditioning and / or thermal spallation (which may be used as pre-treatment), and (b) mechanical processing while boring tunnels in rock and other formations. Thermal processing and mechanical processing may be used alternatively or simultaneously. For example, the preconditioning may use thermal energy to induce thermal shock and weaken the rock (e.g., cause expansion stress, micro-fractures, thermal spallation, etc.). This preconditioning changes the relevant properties of the rock relative to the additional (e.g., mechanical) excavation, including, among other things, effective compressive stress, abrasion properties, and hardness. This preconditioned rock can therefore be efficiently removed using mechanical drilling tools, resulting in, for example, faster boring speeds, reduced tool wear, enhanced precision, and longer deployment lengths (e.g., in comparison to conventional TBM and especially MTBM approaches).

The invention relates to the technical field of coated steel plate production, in particular to a high-straightness coated steel plate and a production method thereof. During production, the following processes are controlled: 1) finishing, namely determining finishing inlet tension T1, finishing outlet tension T2 and finishing rolling force F according to the thickness h and yield strength sigma s of strip steel, and ensuring that a tensile stress value formed by a tension roller is greater than a pressure stress value formed by the rolling force; and 2) coiling: adopting double coiling mechanisms to ensure that the strip steel does not generate longitudinal warping when the strip steel passes through a second turning roller and is coiled. Based on the forming mechanism of the plate shape defect, stable control over the plate shape of the coated steel plate finished product is achieved by improving the finishing parameter adaptation degree and improving the coiling equipment and technology, and great significance is achieved for improving the straightness of the coated steel plate finished product and improving the production efficiency and product competitiveness of the coated steel plate.

This invention provides a method, apparatus, and equipment for evaluating the progressive failure mechanical properties of concrete tunnels in cold regions, relating to the field of engineering mechanics. The method includes: obtaining initial damage parameters and material parameters of a standard sample of the concrete structure to be evaluated; calculating the initial damage value of the concrete based on the initial damage parameters; determining the relationship between the damage value of the concrete after ice fills cracks and the freezing temperature based on the relationship between the initial damage value, material parameters, and the elastic modulus of ice. It also involves calculating ice pressure based on the initial damage parameters, material parameters, and ice-related parameters; determining the correspondence between compressive stress and compressive strain of the concrete at different freezing temperatures based on the relationship between the damage value of the concrete after ice fills cracks and the ice pressure; and evaluating the progressive failure mechanical properties of the concrete based on the relationship between compressive stress and compressive strain. This invention enables accurate prediction and evaluation of the progressive failure process of concrete.

Novel hybrid tunnel boring methods, systems, and apparatuses are described. Example hybrid methods integrate (a) thermal processing, e.g., preconditioning and / or thermal spallation (which may be used as pre-treatment), and (b) mechanical processing while boring tunnels in rock and other formations. Thermal processing and mechanical processing may be used alternatively or simultaneously. For example, the preconditioning may use thermal energy to induce thermal shock and weaken the rock (e.g., cause expansion stress, micro-fractures, thermal spallation, etc.). This preconditioning changes the relevant properties of the rock relative to the additional (e.g., mechanical) excavation, including, among other things, effective compressive stress, abrasion properties, and hardness. This preconditioned rock can therefore be efficiently removed using mechanical drilling tools, resulting in, for example, faster boring speeds, reduced tool wear, enhanced precision, and longer deployment lengths (e.g., in comparison to conventional TBM and especially MTBM approaches).

A connect fitting includes a first connector, a second connector, and at least one groove. The first connector is a hollow structure and has a first connecting end and a first free end. The second connector is a hollow structure and has a second connecting end and a second free end. The first connecting end and the second connecting end are detachably engaged with each other to allow communication between the first connector and the second connector. At least one groove is recessed in at least one of an inner wall of the first free end and an inner wall of the second connecting end. When a hydraulic pipe is connected to the first free end or the second free end, the groove can release compressive stress exerted on the hydraulic pipe to prevent the hydraulic pipe from deformation, cracking, or damage.

The utility model provides a rock debris sampler for geological prospecting, and relates to the field of geological prospecting, the rock debris sampler comprises a sampler body, the sampler body is movably sleeved with a connecting sleeve, the connecting sleeve is fixedly sleeved with a fixing ring, and the surface of the fixing ring is fixedly connected with eight fixing plates; a supporting shaft is rotationally connected between every two adjacent fixing plates, the supporting shafts are fixedly sleeved with supporting legs, and torsional springs are fixedly connected between the supporting legs and the fixing plates. Through cooperation of the supporting legs, the fixed rings, the sliding rings, the first connecting pieces, the second connecting pieces, the transverse plates and other structures, a plurality of triangular stabilizing units are formed together, loads such as vibration and impact generated when the sampler works are converted into tension and compression stress in the transverse plates from concentrated stress at the joints of the supporting legs, and the stability of the sampler is improved. Therefore, the stress concentration phenomenon of connecting points of the supporting legs is effectively avoided, and the risk of fatigue fracture of welding points is effectively reduced.

The invention relates to the technical field of engineering support of metal mine high-stress stratums, in particular to a metal mine high-stress stratum ultra-deep vertical shaft oval lining support structure and method.The metal mine high-stress stratum ultra-deep vertical shaft oval lining support structure comprises an oval vertical shaft wall and a composite support system, and the composite support system comprises an initial flexible support, a shaft outer lining and a shaft inner circular lining; the long axis of the oval well wall is arranged in the maximum horizontal principal stress direction of primary rock stress. A traditional round shaft is changed into an oval shaft, the long axis extending direction of the oval shaft is kept consistent with the maximum principal stress direction, the tensile stress area is effectively expanded to the two sides of the long axis, the surrounding rock pressure is effectively released, after optimization, stress distribution is remarkably improved, the maximum principal stress is dominated by pressure stress, and the stress distribution is reduced. Compared with a traditional circular structure, a more reasonable stress state is realized; the minimum principal stress is also greatly reduced after filling, and the overall stress performance is remarkably improved.

The present application relates to a kind of rock-socketed foundation bearing capacity compensation design method considering rock mass constraint, comprising: establishing rock-socketed foundation calculation model, determine its consolidation boundary condition in rock layer;Calculate the horizontal soil resistance of triangle distribution produced when foundation rotates;Solve the resisting moment of horizontal rock resistance to base center;The deformation of base is decomposed into integral subsidence and rotating component;Determine the calculation formula of base zero stress point position, and establish base vertical pressure distribution model;Establish the overall balance equation group, and solve the foundation rotation angle and zero stress point position by iteration calculation;Calculate the maximum compressive stress of base and evaluate the bearing capacity compensation effect;Finally, section internal force analysis and reinforcement design are carried out.The present application provides additional resisting moment by quantifying rock mass constraint, effectively reduces the maximum compressive stress of base, provides theoretical basis and technical support for improving foundation bearing capacity and optimizing foundation size, and is especially suitable for rock-socketed foundation design in high intensity seismic region.

The invention provides a forming process method of an aircraft panel, which comprises the following steps of: firstly, carrying out finite element joint analogue simulation on stretch forming and shot peening strengthening processes before actual operation is started, and determining optimal stretch and low-energy shot peening parameters; after manufacturing is started, a single profile blank is prepared through an integrated extrusion and quenching combined technology, and the defects that in a traditional technology, the rigidity of a multi-component riveting plate is low, and the material utilization rate is low are overcome; in the stretching process, residual tensile stress is introduced into the core part of the wallboard through pre-stretching, and the residual tensile stress and surface residual compressive stress generated by subsequent shot blasting can form a synergistic strengthening effect, so that the fatigue life is prolonged; and shot blasting adopts a low-energy mode, so that various defects caused by traditional high-energy spraying can be effectively avoided while the surface appearance and the pressure stress precision are ensured. The invention also provides targeted process optimization for ribbed and unribbed wallboards, so that not only is the dependence on complex clamping equipment eliminated, but also the deformation risk caused by clamping stress can be effectively avoided.

The invention provides a discrete ballastless track tension-compression fatigue damage rapid calculation method, which comprises the following steps of: uniformly measuring a complex stress state and a simple stress state through a damage energy release rate, and decomposing tension-compression effective stress by utilizing a fourth-order projection tensor, so that the tension-compression effective stress value is equivalent to a uniaxial tension-compression stress value under a uniaxial loading condition; constructing a hyperbolic function with a natural constant as a base and a damage variable as an index on the basis of the damage energy release rate and in combination with three-stage damage characteristics of high-cycle fatigue of the material; carrying out integration on fatigue loading times through tension and compression damage, and deducing to obtain a discrete transcendental differential function of the damage related to the loading times; function variables are defined, an initial value is set, an iteration format is established, the discrete transcendental differential function is solved through a numerical integration method, and a calculation result graph is drawn. The model is simplified, and the calculation efficiency is improved; a high-order tensor stress updating algorithm does not need to be constructed, redundant calculation is reduced, and the data processing efficiency and the calculation speed during parameter analysis are greatly improved.

This invention discloses a parameterized analysis method for the structural dimensions of a high-strength cold-cast anchor, comprising the following steps: S1, determining the strength and diameter of the parallel steel wire according to actual requirements; S2, calculating the minimum cone length of the anchor cup to obtain the selection range of the anchor cup cone length, and initially selecting the anchor cup cone length; S3, selecting the inner diameter and cone angle of the rear cone of the anchor cup, and calculating the inner diameter of the front cone; S4, calculating the circumferential surface area of ​​the cone of the cold-cast filler; S5, calculating the compressive stress of the cone of the cold-cast filler; S6, determining σ... c Is it less than [σ]? c If yes, proceed to step S7; otherwise, remove any one of the currently selected anchor cup cone length, rear end cone inner diameter, or cone angle from the selection range, and proceed to step S2; S7: Select the anchor cup outer diameter, calculate the anchor cup average inner diameter and anchor cup circumferential stress; S8: Determine σ r Is it less than [σ]? r If yes, proceed to step S10; otherwise, proceed to step S9; S9: Adjust the outer diameter of the anchor cup and proceed to step S7; S10: Complete the dimensional analysis of the high-strength cold-cast structure.

The application provides a design method of a U-shaped steel clamp for an aviation wheel, and belongs to the technical field of aviation brake wheels. The method determines the compressive stress of the steel clamp according to the normal force transmitted by the guide rail of the aviation wheel to the steel clamp and the contact area between the guide rail of the aviation wheel and the steel clamp. When the compressive stress of the steel clamp meets the requirements, the dangerous shear cross-sectional area of the steel clamp is determined. Then, the maximum shear stress of the steel clamp is determined according to the dangerous shear cross-sectional area of the steel clamp and the determined normal force. When the shear stress of the steel clamp meets the requirements, the bending modulus of the cross section of the steel clamp is determined. After that, the maximum bending moment borne by the steel clamp is determined according to the determined normal force. Finally, the maximum bending stress of the steel clamp is determined according to the determined bending modulus of the cross section and the maximum bending moment, and whether the maximum bending stress of the steel clamp meets the requirements is determined. The method solves the problem that the U-shaped steel clamp is prone to fracture, resulting in loss of friction torque and functional failure of the rotor assembly.

This invention discloses a staged pressurized hydraulic precision push-forming device for steel pipe ends, which relates to the field of metal pipe processing technology. This staged pressurized hydraulic precision push-forming device for steel pipe ends decomposes the processing of irregularly shaped flanged ends into two independent stages: low-pressure pre-forming and high-pressure finishing. In the pre-forming stage, applying a lower initial pressure guides the material to achieve stable plastic flow, effectively controlling the metal flow rate and avoiding material accumulation and circumferential compressive stress instability at the pipe edge caused by single high-pressure forming. This suppresses the generation of flange burrs and wrinkling defects from the process source. In the finishing stage, switching to a high-pressure shaping component and applying a second-level set high pressure ensures that the pre-shaped contour fully conforms and eliminates internal residual elastic strain, significantly improving the problems of unexpected springback and secondary deformation after pressure relief and ensuring the contour accuracy of the irregularly shaped end.

This invention discloses a stability analysis method for the bearing arch of a large-span tunnel based on compressive and tensile safety factors, belonging to the field of tunnel and underground engineering construction data analysis technology. The method includes the following steps: obtaining the tunnel geometry, surrounding rock mechanical strength, ground stress, and support parameters; simplifying the bearing arch formed by anchor spraying reinforcement into an arched beam elastically fixed to the sidewalls at both ends; determining the plastic loosening zone of the roof slab through numerical simulation, and using its self-weight as the main vertical load; calculating the internal forces and edge normal stresses of key sections of the bearing arch using structural mechanics, and classifying them into compressive and tensile stresses accordingly; calculating the compressive and tensile safety factors of each section based on the natural strength parameters of the surrounding rock, and using the minimum value as a quantitative index for evaluating the overall stability of the bearing arch. This invention establishes a quantitative mechanical model of the bearing arch, realizing accurate and convenient assessment of the safety of the anchor spraying support structure of the roof slab of ultra-large span tunnels.

The invention belongs to the technical field of material mechanics, particularly relates to a material mechanical property detection device and method based on machine vision, and provides the following scheme aiming at the problem that an underwater test in the prior art cannot simulate the pressure stress change of a material: the device comprises a detection table which is provided with a downward opening and is integrally of a groove-shaped structure, a mounting circular hole is formed in the upper surface, close to one end, of the detection table, a pressure-resistant detection cylinder is welded and fixed in the mounting circular hole, and a bottom supporting plate is fixed to the bottom of the pressure-resistant detection cylinder. When the material mechanical property of the machine vision module needs to be detected, the machine vision module only needs to be fixed to the corresponding position of the bottom of the bottom supporting plate, then the sealing gland covers the machine vision module and is filled with saline water, finally, the high-sealing piston is slowly pushed downwards, pressure can be generated on the surface material of the machine vision module, and the mechanical property of the machine vision module is detected. And then the machine vision module is electrified to observe whether the quality of an image fed back by the machine vision module is normal or not, so that the mechanical property detection function of the material is further realized.

The invention provides a forging method and system for improving the external dimension precision of a forge piece, belongs to the technical field of metal plastic forming, and solves the problems that a transition R corner of a stepped shaft made of a difficult-to-deform material is easy to crack and low in precision. The method comprises the following steps: a pre-forming step: placing an independent pre-forming tool with a target R angle profile on a bar, applying force to the pre-forming tool, rotating the bar at the same time, and pressing an annular groove mark on the surface of the bar; and a final forging step: removing the pre-forming tool, carrying out forging and pressing diameter reduction on the shaft section on one side of the groove mark, and rotating the bar material to form the stepped shaft. The deformation area is in a three-direction pressure stress state through preforming, the material plasticity is improved, cracks are restrained, the R angle precision is guaranteed through the preforming tool, and therefore the yield and reliability are improved.

The invention discloses a large-span tunnel bearing arch stability analysis method based on compressive and tensile safety coefficients, and relates to the technical field of tunnel and underground engineering construction data analysis, and the method comprises the following steps: obtaining cavern geometry, surrounding rock mechanical strength, ground stress and support parameters; a bearing arch formed by anchoring and shotcreting reinforcement is simplified into an arched beam with the two ends elastically and fixedly connected to the side walls; determining a plastic loosening area of the top plate through numerical simulation, and taking the self weight as a main vertical load; calculating key section internal force and edge normal stress of the bearing arch by using structural mechanics, and dividing the internal force and the edge normal stress into pressure stress and tensile stress; based on the natural strength parameters of the surrounding rock, the compression-resistant and tensile safety coefficients of all the sections are calculated, and the minimum value is used as a quantitative index for evaluating the overall stability of the bearing arch. According to the method, the quantitative mechanical model of the bearing arch is established, and the safety of the ultra-large-span tunnel roof anchor-shotcrete supporting structure is accurately and conveniently evaluated.

The present application belongs to the technical field of geotechnical engineering support, and discloses a self-drilling anchor rod supporting system and method based on adjustable delayed expansion slurry and dynamic pressure splitting grouting cooperation. The present application forms a coated calcium oxide expanding agent by using a specific material, and delays the expansion burst time to after the slurry has initial strength and the orifice is locked. The limited expansion force not only compensates for the condensation of the cement base, but also is converted into a powerful radial compressive stress, which realizes "first extrusion and compaction, then cementation and solidification" for the broken surrounding rock, and greatly improves the overall stability of the composite bearing body. The dynamic pressure splitting grouting process of introducing a specific frequency pressure is used to open the crack tip and communicate other cracks by using alternating pressure. At the same time, the hydrophobic coating of the coated calcium oxide expanding agent physically isolates the core expansion component during the grouting stage, avoiding the viscosity surge and invalid expansion caused by the premature hydration of conventional expanding agents. The two cooperate to ensure the excellent permeability and uniform diffusion capacity of the slurry in the deep micro blind end cracks.

The invention provides a method for determining the detonation speed of an explosive used for tunnel caving blasting by considering the influence of ground stress, and belongs to the technical field of blasting engineering and rock mass mechanics. Comprising the steps of obtaining rock mass mechanical parameters, blasting parameters and crustal stress data; establishing a stress analysis model based on ground stress and a blasting design drawing; establishing a crustal stress redistribution model caused by a cut cavity in the model, calculating radial pressure stress generated by crustal stress redistribution among the caving holes, and drawing a polar coordinate graph; establishing a collapse inter-hole explosion stress superposition model, and calculating circumferential tensile stress generated by explosion at the central points of the two holes; and based on the dynamic tensile strength and stress state of the rock, establishing a strength criterion for forming the inter-hole through crack, and deducing and solving the minimum explosive detonation speed required by the criterion. The blasting joint forming quality is effectively improved, back break is controlled, surrounding rock damage is reduced, and the safety, economical efficiency and reliability of blasting engineering are improved.

This invention discloses a high-load-bearing backing bearing with a multi-layered composite wall thickness outer ring. The bearing's dynamic blocking transition layer is composed of polyhedral rigid microparticles and a viscoplastic matrix, with the microparticle volume fraction limited within a critical blocking threshold range. Under quasi-static radial heavy loads, the microparticles are in a blocked state, forming a rigid force chain that transmits hydrostatic stress. Under high-frequency transverse shear stress wave excitation, the matrix undergoes transient superplastic rheology, and the force chain enters a locally unblocked state, resulting in micro-rheology and a sudden drop in transverse shear stiffness. Based on the orthogonal decoupling of stress states and the dual-state phase transition characteristics, this invention actively disrupts the subsurface standing wave resonance condition, resolving the contradiction between macroscopic compressive strength and microscopic dissipation. This effectively suppresses deep peeling failure under high-speed, heavy-load conditions, and its material selection and process design fully embody the energy-saving and high-efficiency concept of green manufacturing.

The application provides a material surface strengthening method and device of three-dimensional multidirectional time-sharing force, which comprises applying different forces to a workpiece in two time periods in one stroke. The strengthening device is assembled by a piston, a base, an outer hoop, a cross screw, a spring, a positioning ring, a ball, a lower anvil, an elastic body, an inclined pin and a force applying body. Different forces are applied to the surface of the metal material in time, including hammering force perpendicular to the surface of the material and outward pushing force in several directions in the tangent plane of the force applying point on the surface of the material. Under the comprehensive action of the forces, the surface layer of the material is plastically deformed by stretching, and a residual compressive stress layer is formed on the surface of the material after the deformation. The existence of the compressive stress layer delays the generation and expansion of fatigue cracks, thereby improving the fatigue life of the parts.

FIELD: underground mining in rocks.SUBSTANCE: method of mining a working in a rock mass exposed to tectonic stresses includes making a straight cut with the formation of a cutting cavity in the centre of the mine working, determining the direction of the greatest compressive stress in the massif and forming the mine working. If the greatest compressive stress is found in the horizontal transverse direction to the contour of the working, the cutting cavity is expanded by exploding pre-contour and contour blasthole charges in the horizontal transverse direction to the contour of the mine working, whereas as a result of the explosion, a dome-shaped part of the cavity of the mine working is formed due to the natural destruction of the rock.EFFECT: increase in the stability of the workings' boundary rocks.1 cl, 3 dwg

The invention belongs to the field of crustal stress measurement, and provides a crustal stress measurement method based on a nonlinear mechanical theory, which comprises the following steps: firstly, measuring a stress-strain curve of a strain hardening material to obtain mechanical parameters, and then constructing a measurement platform comprising a concrete cube, an elastic-plastic thick-wall cylinder and a precise range finder; the thick-wall cylinder is embedded into a concrete through hole and is internally provided with a precise range finder to monitor the change of the inner diameter. A compression test is carried out through multiple groups of horizontal pressure stresses, numerical simulation is combined, and a nonlinear model about the horizontal pressure and mechanical parameters and geometric parameters of the thick-wall cylinder is constructed by applying a Bayesian neural network and a data augmentation technology. The method comprises the following steps: placing a crustal stress observation instrument in an underground soft rock area or a fracture zone deep hole, continuously monitoring the change of the inner diameter of a thick-wall cylinder after coupling with concrete, and determining maximum and minimum principal stress and directions according to a nonlinear model; by means of the method, scientific and technical support can be provided for deep ground scientific exploration and underground engineering construction.

To reduce or convert the tensile stress remaining on the cut surface of the workpiece into compressive stress. [Solution] A method for processing a workpiece W having a cut surface 10 cut by shearing at its end, wherein the end of the workpiece W is compressed and plastically deformed from a direction parallel to the shearing direction A of the shearing process, or from a direction inclined with respect to it.

The invention provides a post-tensioning method large pipe pile pipe joint composite forming method, and belongs to the technical field of composite forming, hard concrete is matched with a centrifugation-vibration-rolling composite forming process, and strict material selection and performance parameter control are combined, so that the concrete section aggregate of the manufactured pipe joint is uniformly distributed, and the concrete section is uniform. And the concrete layering phenomenon caused by a traditional single centrifugal process is thoroughly eliminated. The concrete is high in strength, the compressive strength is not lower than a design label after static curing is finished, the electric flux is not larger than 800 coulomb, and the concrete is excellent in durability and can adapt to severe service environments such as hydraulic wharfs. By means of the design and application of the special duct forming device, it is guaranteed that the straightness of the reserved duct is high, good conditions are provided for subsequent penetrating and tensioning of the prestressed steel strand, the prestress loss of a pile finished product in the prestress tensioning and using process is effectively reduced, and the effective pre-compressive stress of the large pipe pile is remarkably improved.

The application discloses a stress calculation method of a polycarbonate U-shaped lock hollow plate, which comprises the following steps: measuring and determining basic parameters of the U-shaped hollow plate; determining stress equivalent thickness t of the plate σeq ; determining a stress adjustment coefficient η; and calculating and determining the stress σ of the U-shaped hollow plate according to a stress calculation formula. The application provides the stress calculation formula of the polycarbonate U-shaped hollow plate and the determination of related parameters in the formula, and first distinguishes two stress adjustment coefficients η σt and η σp , obtains the tensile stress calculation formula and the compressive stress calculation formula of the U-shaped hollow plate under the condition of large deformation, forms a complete stress calculation system, and fills the blank of the stress calculation theory of the U-shaped hollow plate.

According to the partition self-adaptive vibration aging control method and system for the residual stress of the steel box girder, partition processing is carried out according to the distribution characteristics of the residual stress of all parts of the steel box girder, the most suitable vibration parameters are matched for different areas, the residual stress elimination rate is remarkably increased, especially the stress elimination effect of a high-stress area is remarkably improved, and the application range of the steel box girder is widened. The function of accurately eliminating the residual stress of different areas of the steel box girder is achieved. According to the method, the vibration-impact composite treatment technology is adopted to eliminate residual stress, a deep pressure stress layer is introduced into a key welding seam area, and the anti-fatigue performance of the welding seam of the steel box girder is greatly improved. According to the method, parameter optimization is completed in a virtual environment through a digital twin-driven virtual debugging technology, so that the field debugging time is remarkably shortened; and meanwhile, due to reasonable vibration parameter setting and an efficient stress relieving effect, the vibration aging treatment time is shortened, and the overall production efficiency is greatly improved.

The invention belongs to the technical field of metallurgical steel rolling, and particularly relates to an incoming material plate shape quality setting method taking continuous annealing stable plate passing as a target, which comprises the following steps of: collecting key equipment characteristic parameters and process parameters of a continuous annealing unit; relevant parameters are defined, and a target function equation of the continuous annealing unit incoming material plate shape is defined; calculating transverse pressure stress locally borne by the strip steel by calculating Poisson stress and thermal stress which influence the width direction of the strip steel; calculating a critical buckling index of the ith section of the strip according to the transverse pressure stress of the strip and the critical instability force of the strip steel; calculating a deviation factor according to the tension difference in the width direction of the strip steel, and setting an initial solution of an optimization parameter and an incoming material plate shape target curve equation; establishing a comprehensive optimization objective function for controlling the continuous annealing incoming material plate shape; a continuous annealing incoming material plate shape comprehensive objective function is judged; and outputting an optimal solution.