34 results about "Macro-engineering" patented technology

The invention provides a concrete crack prevention and control method and system based on digital twinning simulation, and relates to the technical field of digital twinning, and the method comprises the steps: building a digital twinning model of mass concrete, and simulating the temperature and stress development process of the mass concrete based on a thermal-mechanical coupling relation to predict the crack risk; generating an anti-crack strategy based on the predicted crack risk; and controlling intelligent maintenance equipment to execute the anti-cracking strategy so as to prevent and control concrete cracks. According to the method, the digital twin model of the mass concrete is constructed, dynamic evolution of temperature and stress is accurately simulated in combination with the thermal-mechanical coupling relation, the crack risk is effectively predicted, and prevention and control scientificity and accuracy are remarkably improved. The generated anti-crack strategy can guide intelligent maintenance equipment to realize automatic and precise maintenance operation, the manual intervention cost is reduced, and the crack occurrence probability is reduced, so that the durability and safety of a concrete structure are improved, and reliable technical support is provided for a large-scale engineering project.

The invention discloses an isogeometric transient dynamics topological optimization method and system of a functional gradient plate structure, and belongs to the field of topological optimization design of functional gradient structures. According to the method, the problems of collaborative optimization of the gradient direction in the gradient material plane and the multi-material structure topology under the transient load effect and the like are solved. According to the technical key points, an isogeometric transient dynamics finite element analysis model of the functional gradient plate structure is constructed based on a reduced Gaussian integral method; constructing a smooth projection scheme and a material interpolation scheme of design variables of the functional gradient plate structure, and providing a transient dynamic topological optimization model of the functional gradient plate structure by taking the density of a control point and the volume fraction of a strong material attached to a plate unit as the design variables and the minimization of dynamic flexibility as a target; constructing a time domain adjoint equation of the topological optimization model, and obtaining sensitivity information of the target function; and finally, obtaining the optimal anti-vibration design of the functional gradient plate structure convenient for engineering application. The device is used for structural light-weight vibration reduction design of large engineering equipment under the strong vibration working condition.

The invention provides a concrete adiabatic temperature rise parameter iterative fitting method based on a segmentation model. The method comprises the steps of constructing a concrete adiabatic temperature rise segmentation fitting formula, determining an initial parameter value range, performing first parameter fitting calculation and performing convergence judgment. According to the method, an existing single curve fitting mode is abandoned, a straight line + double-index curve segmentation model is constructed based on cement hydration five-stage characteristics, a straight line is matched with an initial hydrolysis stage and an induction stage, a double-index curve is matched with subsequent three stages, and it is ensured that a fitting result is consistent with an actual heating process on the aspect of architecture; the problem that a traditional method is large in fitting deviation is effectively solved, the concrete adiabatic temperature rise fitting precision and calculation efficiency are remarkably improved, and the high-precision requirement of large projects for concrete temperature control design is met.

The invention discloses a tempering-free rare earth wear-resistant steel hot rolling method, which optimizes the matching of rough rolling and finish rolling technologies, realizes tempering-free heat treatment, avoids the use of a quenching and tempering heat treatment production process method disclosed in the prior art, effectively avoids low-temperature tempering brittleness, simplifies and shortens the process flow, reduces the production cost, and improves the production efficiency. The product has already been applied to large-abrasion parts of mining machinery, coal mining machinery, environmental protection machinery, conveying machinery and the like and key parts of heavy and heavy engineering with complex use working conditions.

The utility model discloses a spherical hinge structure convenient to disassemble and assemble. The spherical hinge structure comprises a ball head base fixedly arranged on a concrete foundation; the ball head is fixedly arranged on the ball head base; the supporting cylinder is arranged above the ball head base and used for being connected with a tide gate or a bridge or other structures; and the ball head bearing is mounted in the supporting cylinder through a bearing gland and is in running fit with the ball head, so that the ball head bearing, the bearing gland and the supporting cylinder integrally rotate horizontally and / or vertically around the ball head. The utility model is simple and convenient to disassemble and assemble, has the advantages of convenience in maintenance, high bearing capacity, low maintenance cost, strong practicability and the like, and can be applied to various large-scale engineering structures, such as bridge supports, tide gates and the like.

The scheme relates to the technical field of stress monitoring, in particular to a structure tension bolt stress monitoring system and method, through image acquisition, mechanical sensing, vibration monitoring and other multi-source data fusion, key parameters such as earthwork cracks, bolt stress and equipment vibration are comprehensively analyzed, single index misjudgment is avoided, and earthwork viscosity, crack analysis and vibration influence are introduced, collapse danger is accurately quantified, compared with traditional manual inspection or single sensor monitoring, hidden risks can be found earlier, the warning accuracy is significantly improved, the false alarm rate is reduced, based on the quantification grading of collapse danger value, intelligent matching of differentiated reinforcement measures, this dynamic strategy avoids resource waste caused by excessive reinforcement, and ensures that key risk points are quickly disposed, safety and economy are considered, and is suitable for multi-point cooperative management of large-scale engineering.

1. Name of the product in this design: Switch. 2. Application of this design: for network communication of large-scale engineering machinery. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the key design points: Design 1 3D view. 5. Other situations requiring explanation: Design 1 is designated as the basic design in this design patent.

The application discloses a hydraulic system and method based on large engineering machinery escalator lifting control, and belongs to the technical field of engineering machinery equipment. An oil cylinder is hinged between the escalator and a working platform; a first power unit and a second power unit are connected to a first electromagnetic reversing valve; the first electromagnetic reversing valve is connected to a second electromagnetic reversing valve and a third check valve; one oil outlet of the second electromagnetic reversing valve is connected to a small cavity of the oil cylinder, and the other oil outlet is connected to the small cavity of the oil cylinder through a throttle valve; the third check valve is connected to a large cavity of the oil cylinder, and the third check valve is connected in parallel with a load holding valve; and a pilot control port of the load holding valve is connected to the small cavity of the oil cylinder. The hydraulic system can realize the control of the escalator without starting the host machine; the hydraulic system has relatively high power density, can reduce the space occupancy rate, and is convenient for arrangement, maintenance and installation; the hydraulic system is independent of the hydraulic system of the host machine, does not affect the flow demand of other system functions, and has excellent scalability.

The invention discloses a damper intelligent sensing node and a real-time safety early warning system and method. In a modern large-scale engineering structure, the damper plays a key role of ensuring the safety and stability of the structure. The device comprises a sensor arranged on a damper body; the intelligent sensing node module is used for sensor data acquisition and primary processing; the edge calculation unit module comprises a damper performance evaluation algorithm module, a structure safety state evaluation algorithm module and a fault diagnosis algorithm module; the damper performance evaluation algorithm module adopts a Bi-LSTM network to realize evaluation of energy consumption performance and stability of the damper; the structure safety state evaluation algorithm module adopts a mixed information fusion model combining a D-S evidence theory and fuzzy comprehensive evaluation to realize the evaluation of the structure safety state; and the fault diagnosis algorithm module adopts a convolutional neural network to construct a fault diagnosis model. According to the invention, the timeliness and accuracy of early warning are improved, and reliable guarantee is provided for safe operation of an engineering structure.

The invention relates to the technical field of stress monitoring, in particular to a building split bolt stress monitoring system and method, which comprehensively analyzes key parameters such as earthwork cracks, bolt stress and equipment vibration through multi-source data fusion such as image acquisition, mechanical sensing and vibration monitoring, avoids misjudgment of a single index, and improves the accuracy of monitoring. Meanwhile, earthwork viscosity, crack analysis and vibration influence are introduced, the collapse danger is accurately quantified, compared with traditional manual inspection or single sensor monitoring, the method can find hidden risks earlier, the early warning accuracy is remarkably improved, the false alarm rate is reduced, differential reinforcement measures are intelligently matched on the basis of quantitative grading of collapse danger values, and the safety of the collapse is improved. According to the dynamic strategy, resource waste caused by excessive reinforcement is avoided, key risk points are ensured to be quickly disposed, safety and economy are both considered, and the method is suitable for multi-point collaborative management of large-scale projects.

The invention discloses a construction progress dynamic simulation and correction system based on digital twinning, and relates to the technical field of building construction management, the system specifically comprises a physical layer, a data layer, a model layer, an application layer, an operation monitoring center and a message center, data interaction is realized between the physical layer and the data layer, data interaction is realized between the data layer and the model layer, and data interaction is realized between the application layer and the operation monitoring center. The model layer and the data layer realize data interaction with the application layer, the application layer and the physical layer realize data interaction, and the operation monitoring center and the message center respectively realize data interaction with the physical layer, the data layer, the model layer and the application layer. According to the invention, through integration of unmanned aerial vehicle modeling, a BIM cooperation platform and 4D construction software, automatic comparison, progress deviation analysis and resource dynamic scheduling of construction site live-action data and a plan model are realized, so that a non-technical construction team can rapidly implement high-precision digital twinborn management, and the real-time performance and decision-making efficiency of large-scale project progress control are improved.

The application discloses a nonlinear structural damping calculation method based on a generalized Van der Pol oscillator model, and comprises the following steps: firstly, a segment model free vibration wind tunnel test under static wind condition is carried out, and a torsional displacement response time history of the segment model is collected; secondly, a test amplitude of each vibration period is picked up from the displacement response time history, and an instantaneous structural damping corresponding to each test amplitude is calculated; finally, a relationship between a nonlinear structural damping ratio and a time history is fitted by using the instantaneous structural damping and the corresponding test amplitude, and an expression of the nonlinear structural damping ratio is obtained. The significant effect of the application is that the nonlinear structural damping can be quickly and accurately calculated through the structural free vibration decay response time history, so as to provide a reliable basis for vibration response calculation and design work of large engineering structures.

The application relates to a kind of transient load under the function gradient porous structure of multiphase filling dynamics topology optimization method and system, belong to the topology optimization design field of function gradient porous structure.The technical problems to be solved by the application are: how to fully exploit design space, construct the efficient function gradient porous structure of multiphase filling dynamics topology optimization method, realize the optimal anti-vibration design of porous filling structure with high-quality transient dynamic performance.Technical points: based on characteristic orthogonal decomposition method, the reduced transient dynamic finite element equation of function gradient porous multiphase filling structure is constructed;the material interpolation model and volume constraint model of function gradient porous multiphase filling structure are constructed, and the transient dynamic multiphase filling topology optimization reduced model with the minimum dynamic compliance as the optimization objective is proposed;the reduced sensitivity time-domain accompanying equation is constructed, and the sensitivity of dynamic compliance and volume constraint is efficiently calculated;based on ADMM-MMA hybrid optimization algorithm, the optimal topology design of function gradient porous multiphase filling structure is efficiently solved and obtained.The application can maximize the optimal anti-vibration performance of function gradient porous filling structure, and is especially suitable for the structure lightweight anti-vibration design of large engineering equipment.

The present application relates to the field of engineering vehicles, in particular to a method for compiling a load spectrum of a shovel working device fatigue life bench test procedure, comprising: collecting load signals of key parts of a shovel in the field, and preprocessing the load signals; performing a fatigue test on the shovel, obtaining input loads and output loads of each measuring point, and constructing a training set; establishing a shovel load spectrum prediction model, which is based on an NARX model; identifying the training set through a FROLS algorithm, and training the shovel load spectrum prediction model using the identified training set; performing inverse virtual iteration using the preprocessed load signals to obtain a field input load spectrum; performing rainflow statistical counting on the field input load spectrum to obtain a two-dimensional load spectrum; and converting the two-dimensional load spectrum into a one-dimensional load spectrum based on the equivalent damage principle and the variable amplitude method. The present application realizes fast backstepping and spectrum compiling of a large engineering machinery overall working device fatigue test loading spectrum, and significantly improves efficiency and precision.

The present application relates to a kind of low crack sensitivity coefficient 550MPa grade low alloy high-strength steel plate and its manufacturing method, belong to metallurgical technical field.The chemical composition of the steel plate is C:0.05~0.09%, Si:0.10~0.30%, Mn:1.40~1.60%, Nb:0.040%~0.060%, Ti:0.008%~0.018%, Al:0.020~0.040%, B:≤0.0010%, Ca:0.0005~0.0015%, P:≤0.012%, S:≤0.002%, O:≤0.002%, N:≤0.0035%, H:≤0.0001%, the balance is Fe and inevitable impurity element;Carbon equivalent CEV:≤0.37%, Pcm≤0.19%.Production thickness is 50~70mm, microstructure is mainly uniform acicular ferrite and bainite mixed structure.From the angle of element composition design, base material organization, rolling deformation, small water cooling etc., it is guaranteed that the steel plate has high strength, high toughness, excellent cold bending performance and welding cracking resistance, can be widely used in engineering machinery, high-rise building, bridge, ocean platform etc., and the manufacture of large-scale engineering machinery equipment or steel structure that has strict requirements to formability, weldability.

The utility model discloses a quick lime spreader which comprises a hopper, a material guiding pipe is arranged at the bottom of the hopper, the top side of one end of the material guiding pipe is communicated with the bottom of the hopper, a discharging pipe is arranged on the bottom side of the other end of the material guiding pipe, the material guiding pipe is horizontal, the direction of the discharging pipe is vertically downward, and one end of a transmission shaft is connected with a right-angle steering gear. And a spiral auger is arranged on the inner end surface of the transmission shaft located in the material guide pipe. The device is simple in structure and convenient to use, can be fixedly matched with a tractor for use, can reduce the purchase cost, is relatively small and suitable for being used in an airport compared with large-scale engineering spreading equipment, can be accurately put at a fixed point, and is more convenient to use compared with the conventional manual spade spreading and mechanical equipment for spraying through rotation of a screw rod. The spreading amount in unit time is more than 5 times that of manual work, the fed quicklime powder is uniform and good in continuity, the rotating speed can be adjusted according to different working environments, and the instant spraying amount of the quicklime is optimized.

The invention relates to the technical field of AI collaborative drawing auditing scheme design, in particular to an AI collaborative drawing auditing method, system and platform. The defects of low efficiency, poor collaboration and slow knowledge updating of traditional manual drawing auditing are overcome. The core technology comprises the following steps: automatically identifying drawing specification conflicts through a convolutional neural network; a multi-level rule base is adopted to fuse static specifications and dynamic ship supervision experience; distributing a drawing auditing task based on the adaptation degree model; a detachable structured report is generated and distributed directionally; realizing data security management and control in combination with the permission matrix and the version evolution model; and multi-language real-time switching is supported by using an attention mechanism. A closed-loop control system of AI preliminary screening-manual verification-knowledge feedback is formed, the drawing checking period is remarkably shortened, the design defect recognition rate is increased, and intelligent checking of large engineering projects is supported.

The invention discloses a sealing system and sealing method for a large long thin-wall hydraulic cylinder of ultra-large engineering machinery, the system comprises a piston sealing structure and a guide sleeve sealing structure, and the piston sealing structure comprises a first guide sealing unit, a second guide sealing unit and a combined sealing unit which are arranged in the axial direction of a piston; the first guiding sealing unit, the second guiding sealing unit and the combined sealing unit are in sliding connection with the cylinder barrel. The guide sleeve sealing structure comprises a first guide sleeve and a second guide sleeve, one end of the first guide sleeve is embedded between the cylinder barrel and the piston rod, the other end of the first guide sleeve abuts against the second guide sleeve, the outer surface of the first guide sleeve is in sealing connection with the inner surface of the sheath, and the inner surface of the first guide sleeve is in sliding connection with the piston rod. The problems of internal leakage, oil leakage, shaking abnormal sound, cylinder barrel strain, piston rod strain and the like of a large long thin-wall cylinder of the ultra-large engineering machinery are solved, the reliability of a telescopic system of the ultra-large engineering machinery such as a kiloton crane and the like is improved, the light weight level of the whole machine is realized, and the hoisting capacity and the loading efficiency are improved.

The invention provides an integrated whole-process project cost consultation and management method, and relates to the technical field of project cost consultation and management. Aiming at the problems of fragmentation, passive management and control, weakening of design source control and the like of the existing project cost consultation service, a double-team organizational structure of a field integrated team and a rear special team is constructed; through establishment of a system and a quota design mechanism in an investment decision-making stage, dynamic cost management and control and process optimization in a construction implementation stage, and post-evaluation and experience precipitation in an operation maintenance stage, project full-cycle cost collaborative management and control are realized. According to the method, the problems of disjunction of multi-stage cost management, low claim change efficiency, insufficient design optimization excitation and the like are effectively solved, the cost management and control precision is remarkably improved, the project investment cost is reduced, and a systematic solution is provided for cost management of large projects such as hydropower and capital construction.

This invention belongs to the field of engineering machinery logistics technology, and discloses a multi-functional transfer fixture for large engineering machinery tires and a complete logistics method. The fixture consists of a frame, adjustable load-bearing components, hydraulic clamping components, hydraulic lifting casters, pneumatic braking devices, and a towing component, along with rubber buffer pads, a tire conveyor line, a piano-key braking device, and limit blocks. The fixture is made of high-strength steel, enabling self-adaptive load-bearing, flexible clamping, flexible transfer, and multi-layer stacking of tires, maintaining the tires vertically throughout the process, and is suitable for giant engineering tires. This invention also constructs a closed-loop tire logistics method from the tire manufacturer to the main assembly plant, integrating various logistics links through the fixture and combining it with a central intelligent dispatch system to achieve digital traceability and scheduling. Compared with existing technologies, this invention significantly reduces tire transfer damage rates, improves logistics efficiency, reduces overall costs, and features highly versatile and easy-to-operate fixtures, making it suitable for the large-scale, standardized transfer of large engineering machinery tires.

The invention discloses a movable support for a large-diameter balance gun and a using method of the movable support. The movable support is used for solving the problems that the large-diameter balance gun is low in short-distance movement flexibility, high in cost, long in consumed time and large in work amount. The support comprises a concrete base, a steel plate, an iron box, wedges and a frame body, the steel plate is fixed and matched in a guide groove of the concrete base, the iron box with a fixed pulley and a connecting ring is arranged on the steel plate, the iron box is provided with a plurality of groups of two crossed and overlapped wedges, the wedges are provided with the frame body for bearing a gun body, bolts vertically penetrate through through holes in the two sides of the frame body, and nuts concentric with the bolts are arranged. During use, the iron box is driven to move to a target position through tension, the jack is matched with the wedge to adjust the height of the frame body, and the bolt calibrates the frame body to be horizontal. The device does not need to depend on large engineering equipment, is flexible to move, can quickly complete position adjustment and fixation, reduces the comprehensive cost, meets different test target position requirements, adopts conventional components, is low in manufacturing cost, is high in practicability, and is suitable for large-caliber balance gun target range test scenes.

Embodiments of the present application disclose a kind of construction engineering drawing jump link automatic generation method, device, equipment and medium, involve jump link generation technical field.The method includes: receiving drawing file, identifying jump source and jump target from the drawing file;Based on the jump source, generate jump source object and generate jump target object based on the jump target;From all the jump target object, determine the target jump target object matched with the jump source object;Establish the jump link between the jump source object and the target jump target object.The present application solves the core problems of low efficiency, insufficient accuracy and maintenance difficulty of prior art by integrated process of automatic identification, object structured construction, intelligent matching and automatic link establishment, provides efficient, accurate and sustainable maintenance drawing correlation navigation technology support for large engineering projects.

The utility model relates to the technical field of heavy industry machinery, in particular to a stable cross beam metal connecting piece which comprises a steel column, first screw holes are formed in the four faces of the outer wall of the steel column, a connecting base is movably connected to the outer wall of the steel column in a sleeved mode, and first through holes are formed in the four faces of the outer wall of the connecting base. Fixing plates are arranged at the upper end and the lower end of the front side wall of the connecting base, a supporting plate is arranged on the front side wall of each fixing plate, and two bases are arranged on the top end wall of each supporting plate. Compared with a traditional multi-bolt connecting mode, due to the unique structural design, a large number of bolts do not need to be tightly screwed one by one during installation, and the installation steps and time are greatly reduced; inconvenience caused by disassembly of a plurality of bolts in a traditional connection mode is effectively avoided, and the bolt connector is particularly suitable for frequent assembly and disassembly requirements in a large project or a complex structure, and the project construction efficiency and the equipment maintenance convenience are greatly improved.

The utility model relates to the technical field of machining, and discloses a steel pipe cutting, positioning and fastening device which comprises a main body assembly, a fixing ring, a supporting frame fixed to the bottom of the fixing ring, supporting legs fixed to the bottom of the supporting frame, and an adjusting assembly arranged on the supporting frame and comprising an adjusting piece. The adjusting plate is fixed to one side of the supporting frame, a rack is fixed to one side of the adjusting plate, a gear is arranged on one side of the rack, and the rack is meshed with the gear. The clamp has the advantages that the distance between the clamps can be adjusted according to the lengths of the steel pipes, so that the clamp is suitable for the steel pipes with different length specifications, no matter the short steel pipes are used for machining small parts or the long steel pipes are applied to scenes such as large engineering construction, stable fixation can be achieved by flexibly adjusting the distance between the clamps, and the clamping efficiency is improved. And the application range of the clamp in different steel pipe cutting tasks is greatly expanded.

The invention relates to the technical field of large engineering machinery, and discloses an assembly clearance control method for a lining structure in a thrust wheel of an ultra-large excavator, which comprises the following steps of: S1, preparing a test component: mounting a lining, a thrust wheel body and a wheel shaft together; s2, room temperature reference measurement: measuring the size of each component at room temperature; s3, step temperature rise and real-time measurement: measuring the size of each component at high temperature; s4, establishing a temperature and size function model: obtaining a continuous prediction function of each component; s5, normal-temperature assembly size determination, wherein the target machining size and assembly parameters of all the components at the normal temperature are calculated; and S6, bushing machining and thrust wheel assembling, wherein bushing machining and thrust wheel assembling are guided according to the design target value and the assembling interference magnitude. The normal-temperature assembly size is reversely designed based on the actual measurement expansion rule, it is ensured that the working gap between the bush and the shaft is always in a reasonable range in the whole interval from the normal temperature to the highest working temperature, and high-temperature locking or impact abrasion is effectively avoided.

The invention belongs to the related technical field of engineering mechanics and materials, and discloses a material multi-section linear plastic hardening model construction and implementation method based on near-field dynamics, which is used for effectively solving a nonlinear hardening behavior of a material. The method comprises the following steps: constructing a near-field dynamics initial numerical discrete model; setting boundary conditions needing to be applied to the initial numerical discrete model; calculating a current configuration parameter of the Nth time step; constructing a multi-section linear plastic hardening model parameter matrix; constructing a yield judgment criterion; the yield state is judged on the basis of the multi-section linear plastic hardening model parameter matrix and the yield judgment criterion; calculating equivalent plastic strain increment according to the yield state; and updating a near-field dynamic force density vector and a plastic correlation quantity according to the equivalent plastic strain increment. According to the method, on the premise that the precision is guaranteed, the calculation efficiency of the near-field dynamic elastoplasticity problem is remarkably improved, and calculation obstacles are cleared away for applying high-precision fracture mechanical analysis to a large-scale engineering structure.

The application provides a suction pile vertical penetration method based on electric pulley blocks and ship cooperative control. The method realizes single-ship independent completion of suction pile transportation, positioning, lowering and penetration whole-process operation by modifying a tugboat, setting a suction pile fixing area, two groups of electric pulley blocks and a water pump group on a deck. During construction, the suction pile is first fixed on the deck of the tugboat, and then the tugboat sails to the sea area. After the water slide is wetted by the water pump, the lowering is cooperatively controlled by the double electric pulley blocks to ensure the vertical water entry error. When the pile body sinks to the stable depth by gravity, the lifting point connection is released by the underwater robot to avoid the soil plug effect. The beneficial effects of the application are as follows: without the need of large engineering ships and multi-ship cooperation, the construction cost is greatly reduced, and the construction period is shortened; the deck composite structure can reduce the wear and limit the position, and cooperate with the DP2 positioning system to ensure the construction accuracy. The scheme has high integration and strong adaptability, and is suitable for marginal oilfield and deep water area suction pile installation, and fills the technical blank of tugboats in the field of marine foundation installation.

The application provides a tower engineering quantity statistical method and device based on GIM applied to power grid engineering, and relates to the field of power grid construction engineering quantity statistics. The method comprises the following steps: analyzing a GIM file corresponding to the power grid engineering to extract model elements, and disassembling the model elements to form a plurality of rod models; acquiring rod information and node information corresponding to each rod model; judging the rod type of the rod model based on the rod information; performing data calculation based on the node information to obtain rod model length information of the corresponding rod model; determining the quality of the corresponding rod model based on the rod type and the rod model length information; inputting the quality of each rod model into a structure semantic coupling model, and outputting the total quality of the model elements according to the structure semantic coupling model. The application solves the problem that the calculation efficiency is low when only relying on manual experience to perform engineering quantity statistics in the face of large engineering projects, complex structure scenes or multi-specialty collaborative preparation tasks.

The invention discloses a functional gradient plate structure time domain dynamics topological optimization method and system based on a principal component analysis method, and belongs to the field of topological optimization design of functional gradient structures. The method is provided for improving the calculation efficiency of structural time domain dynamics topological optimization and solving the problem of synchronous time domain dynamics optimization of gradient material gradient and structural topology. The method is technically characterized by comprising the following steps: constructing an equal time domain dynamics full-order finite element model of a functional gradient plate structure on the basis of a Bezier decomposition and extraction algorithm of an NURBS (Non-Uniform Rational B-Space) function; establishing a tight and smooth functionally graded material interpolation model, and proposing a full-order time-domain dynamics multi-material topological optimization model for the problem of dynamic compliance minimization of the functionally graded plate structure; constructing an equal-time domain dynamics reduced-order finite element model of the functional gradient plate structure, cooperatively constructing a time domain adjoint equation of an optimization model, and efficiently solving sensitivity information of a target function and a constraint function; and on the basis of an MMA-GCMMA hybrid optimization algorithm, a design variable is updated, so that the optimal anti-vibration design of the functionally gradient plate structure convenient for engineering application is obtained. And the device is suitable for structural light-weight vibration reduction design of large-scale engineering equipment.