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65 results about "Continuous simulation" patented technology

Continuous Simulation refers to a computer model of a physical system that continuously tracks system response according to a set of equations typically involving differential equations.

Roadside sensing unit optimization deployment method under partial vehicle-road cooperation condition

The invention discloses a roadside sensing unit optimization deployment method under partial vehicle-road cooperation conditions, and belongs to the technical field of roadside sensing unit optimization deployment, and the method comprises the steps: building traffic scenes, and obtaining a true value probability occupation grid of each traffic scene through multi-time-step continuous simulation; carrying out sensing parametric modeling on the roadside sensing unit and the intelligent networked automobile, establishing a ray tracing algorithm considering the shielding effect, and obtaining an observable probability occupation grid under a vehicle-road collaborative sensing condition through the ray tracing algorithm considering the shielding effect; a cross entropy of a true value probability occupancy grid and an observable probability occupancy grid is used as a traffic flow monitoring-oriented vehicle-road collaborative perception substitution evaluation index, and optimization deployment is carried out on a roadside perception unit; a specific complete technical framework is provided for introducing POG into the field of RPU optimization layout, and the problem that in the prior art, influences on ICV are insufficiently considered when RPU optimization layout modeling is carried out is solved.
Owner:HEFEI UNIV OF TECH

Running posture monitoring method based on image recognition technology

The invention relates to the technical field of motion monitoring, in particular to a running posture monitoring method based on an image recognition technology, which comprises the following steps: deploying cameras at different angles, synchronously recording whole body actions of a user during running, extracting a joint angle change sequence, and constructing a running three-dimensional action model. According to the method, the consistency and the difference of the actions are recognized by comparing the amplitude and the speed of the joint movement, so that the detection of the action defects is facilitated, and the stability and the deviation of the gait can be quantitatively evaluated by analyzing the foot landing angle and the stride change; analysis of the motion change frequency and amplitude allows coaches and athletes to adjust and optimize gaits in a targeted manner in the training process, the risk of sports injury is reduced, and through continuous simulation and motion symmetry evaluation, recognition of sports defects and adjustment of the camera angle and shooting speed, the training effect of the coaches and the athletes is improved. And the data capture and analysis process in the training process is more efficient and targeted.
Owner:SHUHUA SPORT CO LTD

Point cloud-driven thoracic cavity whole organ dynamic reconstruction and respiration monitoring method and system

The invention discloses a point cloud-driven thoracic cavity whole organ dynamic reconstruction and respiration monitoring method and system, and the method comprises the steps: constructing a three-dimensional geometric model corresponding to each target structure in a thoracic cavity based on the thoracic medical image data of a target object, and converting the three-dimensional geometric model into static point cloud data; driving the static point cloud data to perform dynamic deformation simulation in a respiratory cycle based on a respiratory movement rule of the target object to obtain dynamic point cloud data synchronized with a respiratory time phase; performing time-space synchronization association on the dynamic point cloud data and the electrical characteristic parameters, and constructing a digital twin thoracic cavity model; deploying a virtual sensing assembly which dynamically deforms along with the thoracic cavity in the digital twin thoracic cavity model, simulating and monitoring the dynamic breathing process of the target object, and generating a virtual physiological signal; and performing signal processing on the virtual physiological signal to obtain a dynamic reconstruction image reflecting respiratory movement. Continuous simulation of the full-breathing movement process is achieved, and the temporal-spatial resolution and diversity of a virtual database are improved.
Owner:CHINA JILIANG UNIV

Water quality simulation method for plant-network-river integrated water supply

A water quality simulation method for plant-network-river integrated water supply, comprising steps such as river channel water source simulation, dynamic analysis of the quality of water from a water sampling point, construction of a model for predicting the quality of water in a water supply pipe network, data interface development, one-dimensional simulation of hydrodynamics and water quality in a pipe network, and integrated model integration and automation. In the method, open-source software OpenFOAM and EPANET-MSX can be used to achieve continuous simulation and real-time update of water quality and hydrodynamic parameters from a river channel to a water supply pipe network by means of an automated script and data interface. The model integrates the treatment effects of water quality purification plants, and the water quality purification plants are simplified into processing nodes on a pipeline system, thereby ensuring the authenticity and accuracy of simulation results. The present method is easy to operate and implement, and allows for automatic generation of a water quality parameter time-series plot, thereby greatly improving simulation efficiency. Water supply enterprises and water conservancy departments can use the method to establish a water supply quality information management system, perform long-time series prediction, optimize daily management and maintenance, and formulate water quality safety guarantee measures, and the method has significant practical value and wide application prospects.
Owner:TSINGHUA SHENZHEN INTERNATIONAL GRADUATE SCHOOL

Surface soil humidity simulation method and system considering soil freeze-thaw state

The invention discloses a surface soil humidity simulation method and system considering a soil freeze-thaw state, and belongs to the technical field of soil humidity simulation. The method comprises the following steps: acquiring land surface environment data and actually measured soil humidity data of a plateau area; preprocessing the data; dynamically judging the freeze-thaw state of the soil, and generating a machine learning model training sample; training and comparing a plurality of machine learning models considering the soil freeze-thaw state, and selecting an optimal model; and reconstructing the plateau area surface soil humidity based on the optimal model to obtain a time-space continuous simulation result. By considering the soil freezing and thawing state, the overall simulation precision of the surface soil humidity of the plateau region is improved, and the humidity simulation precision of the soil freezing period is remarkably improved.
Owner:YUNNAN UNIV

Continuous simulation method for bulging-pressure wave-arc welding stress deformation evolution of corrugated pipe

The invention discloses a continuous simulation method for bulging-pressure wave-arc welding stress deformation evolution of a corrugated pipe, and belongs to the field of metal cold-hot processing continuous simulation. According to the method, a whole set of finite element modeling method for carrying out continuous simulation of a corrugated pipe manufacturing process chain is provided aiming at continuous processes of pipe bulging, end wave pressing and girth welding in a corrugated pipe machining process, so that simulation analysis of stress and deformation evolution processes in the corrugated pipe bulging and pressing processes is realized; and carrying out circular seam welding residual stress and post-welding deformation simulation analysis on the geometric model with the initial stress, so that the problems of poor simulation result precision and low credibility of a single-process finite element model are solved. By the adoption of the continuous simulation method, continuous simulation of pipe bulging, end wave pressing and girth welding is carried out on the U-shaped corrugated pipe with the wall thickness being 0.2 mm, the outer diameter being 20.4 mm, the inner diameter being 15 mm and the wave pitch being 3 mm, and simulation results and test verification data are both within the allowable error range.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1

Simulation method, device and equipment for OLED ink-jet printing and storage medium

The invention relates to the technical field of analog simulation, in particular to a simulation method, device and equipment for OLED ink-jet printing and a storage medium. According to the method, simulation resources are configured in stages, stage switching is dynamically judged, and stage information is transmitted in order; the technical problem that in the prior art, a single modeling framework is difficult to consider simulation precision and calculation efficiency at the same time is solved. Specifically, stages are divided according to a physical evolution rule of an ink jet process, so that models of all stages are accurately matched with a dominant physical mechanism, dynamic characteristics of key behaviors such as ink supply response, liquid column necking and liquid drop form adjustment are depicted in detail, calculation redundancy of non-key stages is reduced through a self-adaptive simplification strategy, and the calculation efficiency is improved. Continuous simulation of the whole process from spraying starting to droplet deposition is achieved, physical quantity conservation and evolution consistency is ensured, the simulation precision and the calculation efficiency are remarkably improved compared with a traditional method, the pixel deposition consistency is effectively improved, and the actual process trial and error cost is reduced.
Owner:JIHUA LAB

Device and method for testing dynamic response of continuous sinking water of immersed tunnel pipe joint

The invention belongs to the technical field of simulation of installation and control of an offshore large floating structure, and particularly relates to a device and a method for testing dynamic response of continuous sinking water of a pipe joint of an immersed tunnel. According to the invention, the cooperative control technology of pipe joint immersion and mooring positioning is applied to the pool model test method of pipe joint continuous immersion, the control of the negative buoyancy of the pipe joint is realized by using a ballast water sump remote controller in the model test, and the cooperative control of a hoisting cable and a mooring positioning cable of the pipe joint is carried out by using a servo control system. The full-flow continuous simulation of the immersed tube section immersion operation is realized; cooperative control adjustment of cable lifting and releasing and mooring and positioning is conducted under the still water condition, the feasibility of the system control technology is verified, the influence of the hydrodynamic environment on dynamic response during continuous pipe joint sinking operation is studied, and a reference basis is provided for formulating and optimizing an immersed tunnel pipe joint sinking installation scheme.
Owner:TIANJIN UNIV +1

Method and system for dynamic reconstruction of thoracic whole organ and respiratory monitoring driven by point cloud

The application discloses a point cloud driven thoracic cavity whole organ dynamic reconstruction and respiratory monitoring method and system, and the method implementation comprises the following steps: based on the thoracic medical image data of a target object, constructing three-dimensional geometric models corresponding to each target structure in the thoracic cavity, and converting the three-dimensional geometric models into static point cloud data; based on the respiratory motion law of the target object, driving the static point cloud data to perform dynamic deformation simulation in a respiratory cycle, and obtaining dynamic point cloud data synchronized with the respiratory phase; synchronously associating the dynamic point cloud data with electrical characteristic parameters in time and space, and constructing a digital twin thoracic cavity model; deploying a virtual sensor assembly that dynamically deforms with the thoracic cavity in the digital twin thoracic cavity model, and simulating and monitoring the dynamic respiratory process of the target object, and generating a virtual physiological signal; and through signal processing on the virtual physiological signal, a dynamic reconstruction image reflecting the respiratory motion is obtained. The continuous simulation of the whole respiratory motion process is realized, and the time and space resolution and diversity of the virtual database are improved.
Owner:CHINA JILIANG UNIV

Long-time scale continuous simulation system and method for power grid dispatching information physical system

The invention discloses a long-time scale continuous simulation system and method for a power grid dispatching information physical system, and belongs to the technical field of power grid simulation. The system comprises a power grid dispatching information physical system long-time scale simulation control module which is used for receiving and processing various data sources and promoting a long-time scale continuous simulation process; the power grid continuous operation mode correction module is used for correcting the operation state of each type of equipment; the continuous steady-state power flow and frequency simulation module is used for performing power generation and utilization unbalance calculation, ACE calculation, frequency calculation, tie line calculation and steady-state power flow calculation; and the power grid dispatching information physical system interaction module is used for data interaction and sending the data of the continuous steady-state power flow and frequency simulation module to the power grid dispatching information physical system long-time scale simulation control module. According to the method, the power grid control, analysis and decision process deduction under the driving of the external environment and the regulation and control behavior is realized, and the method is more vivid and appropriate to the actual regulation and control operation process.
Owner:CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD

Method and device for generating dynamic continuous electromagnetic characteristics of a target based on a scattering center model

The application discloses a target dynamic continuous electromagnetic characteristic generation method and device based on a scattering center model and belongs to the technical field of target electromagnetic characteristic generation. The method comprises the following steps: discretely sampling attitude angles according to fixed sampling intervals in a full space to construct a target scattering center parameterization model database; acquiring four adjacent scattering center data corresponding to four adjacent sampling angles one by one from the database according to a simulation attitude angle at a simulation moment; calculating weighted and corrected scattering center data at the simulation moment by using an interpolation weighting method based on the four adjacent scattering center data; calculating scattering field data at the simulation moment; and acquiring scattering field data at a plurality of continuous simulation moments to generate dynamic and continuous electromagnetic scattering characteristic data. The application can effectively improve the phenomenon that the generated target SAR / ISAR image does not conform to the actual situation and the azimuth side lobe is expanded.
Owner:BEIJING INST OF ENVIRONMENTAL FEATURES

Integrated hydrodynamic and water quality simulation method for water supply systems of water treatment plants, pipe networks, and rivers

PendingUS20260134179A1General water supply conservationForecastingWater sourceWater quality modelling
An integrated hydrodynamic and water quality simulation method for water supply systems of water treatment plants, pipe networks, and rivers includes steps of river water source simulation, dynamic analysis of water quality at the water intake, construction of a water supply pipe network water quality prediction model, data interface development, one-dimensional pipe network hydrodynamic and water quality simulation, and integrated model integration and automation. The method can utilize open-source software, and through automated scripts and data interfaces, realize the continuous simulation and real-time update of water quality and hydrodynamic parameters from rivers to water supply pipe networks. The model integrates treatment effect of water treatment plants, which are simplified as treatment nodes in the pipeline system, ensuring the authenticity and accuracy of simulation results. This method is not only easy to operate and implement, but also can automatically generate time-series graphs of water quality parameters, significantly improving simulation efficiency.
Owner:TSINGHUA SHENZHEN INTERNATIONAL GRADUATE SCHOOL

Continuous depth stratum parameter simulation method, device and equipment and storage medium

The invention provides a continuous depth stratum parameter simulation method, device and equipment and a storage medium, and belongs to the technical field of logging identification. The method comprises the following steps: constructing an initial three-dimensional digital core; generating a corresponding first digital core through random change of mineral components, porosity size and pore distribution; simulating formation parameters of the first digital core; and simulating stratum parameters of the continuous depth of the to-be-evaluated section. The method comprises the following steps: superposing mineral components, porosity size and pore distribution as condition information to an initial three-dimensional digital core by utilizing a condition model such as CDCGAN to generate first digital cores subjected to condition constraint, and then simulating stratum parameters of each first digital core through a finite element method and the like, so as to obtain stratum parameters of each first digital core; and finally, based on the logging data of the to-be-evaluated section, searching the most similar first digital core of each stratum continuous depth point, and further solving the stratum parameters of each depth point, thereby realizing continuous depth stratum parameter simulation, and being simple, convenient, rapid and high in practicability.
Owner:CHINA NAT PETROLEUM CORP

Particle type earth and rockfill dam large deformation calculation method based on node integration

The invention discloses a particle earth and rockfill dam large deformation calculation method based on node integration, and relates to the technical field of geotechnical engineering large deformation. The method comprises the following steps: establishing a generalized shape function and a strain displacement matrix of a proportion boundary finite element SBFEM under a Laplacian equation; under an updated Lagrange framework, state variables at Gaussian integral points of the triangular SBFEM unit are projected to nodes through a strain smoothing technology, a momentum equation is converted into a balance equation based on node integration through a virtual work principle and a Green divergence theorem, and the dynamic equation is solved through a central difference method; and when the grid distortion degree reaches a significant level, discarding the current grid and performing re-grid division. All state variables such as stress, displacement, speed and the like are concentrated on nodes of abandoned grids, so that the subsequent grid generation and calculation process can be seamlessly continued. According to the invention, continuous simulation of the whole large deformation process based on the proportional boundary finite element method is realized.
Owner:TIBET AGRI & ANIMAL HUSBANDRY COLLEGE +2

A method for generating a silicone appliance to direct counterclockwise rotation growth of the mandible

The application provides a method for generating a silica gel appliance for guiding counterclockwise rotation growth of a lower jaw, and has the characteristics that three-dimensional data of a user's dental arch is obtained, and a basic appliance three-dimensional digital model is constructed according to the three-dimensional data of the user's dental arch; current lower jaw plane angle data is obtained, and a plurality of continuous simulation stage appliance shaping forms in the vertical direction, the horizontal direction and the sagittal direction are constructed according to the current lower jaw plane angle data and the basic appliance three-dimensional digital model, and the plurality of continuous simulation stage appliance shaping forms can promote counterclockwise rotation of the lower jaw forward and upward; mechanical simulation analysis is performed on the basic appliance three-dimensional digital model, and a target appliance three-dimensional digital model is obtained; manufacturing data output by the target stage appliance three-dimensional digital model is converted into manufacturing instructions, and a corresponding appliance mold is manufactured or a corresponding appliance is printed according to the manufacturing instructions by driving a printing device.
Owner:BJ APPLIANCE HEALTH SCI & TECH CO LTD

A method and device for dynamic simulation of water ecosystem at all scales in a watershed

The present invention provides a method and device for dynamic simulation of a water ecosystem at all scales in a watershed, which is applied to the field of environmental monitoring technology, including: obtaining remote sensing images of a water ecological environment to be simulated, constructing a remote sensing big data inversion model, and obtaining the output of the remote sensing big data inversion model; resampling the output of the remote sensing big data inversion model using an improved Kalman filter, verifying and calibrating the output of the FVCOM hydrodynamic model, and dynamically and continuously simulating the water ecological environment to be simulated according to a preset frequency. This application aims at the problem that the simulation results of existing water quality models have large uncertainty, and provides a method that can establish a remote sensing big data inversion model by combining GA and ANN, which can be applied to long-term, multi-scale, and large-scale dynamic monitoring of water ecological quality.
Owner:BEIJING NORMAL UNIVERSITY

A test simulation system and method for fuel delivery characteristics of a refueling pod

The application belongs to the technical field of aircraft in-flight refueling, and particularly relates to a test simulation system and method for fuel delivery characteristics of a refueling pod, comprising: a ground controller, a steel fuel tank of a refueling aircraft, an in-flight refueling pump set, a fuel delivery pipeline, a negative pressure fuel tank of a receiver aircraft, a flight environment pressure simulation box, a ram turbine pump of the refueling pod, an electro-hydraulic proportional valve, a high-speed hydraulic motor, a refueling hose, a refueling and receiving assembly, a pressure regulating valve, a receiving flow regulating valve and a receiving flow sensor. The ground controller adjusts the rotating speed of the ram turbine pump of the refueling pod directly connected with the hydraulic motor through the electro-hydraulic proportional valve according to the command of a pressure regulating controller of the refueling pod, so that the pressure regulating process simulation of the refueling pod is realized. The ground test controller changes the opening degree of the regulating valve to simulate the change of the receiving flow, so that the verification of the fuel delivery characteristics of the refueling pod under different receiving flows is realized. The negative pressure fuel tank of the receiver aircraft is provided with an oil discharge pump, so that the continuous simulation of the receiving process is realized.
Owner:XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA

A Deep Learning-Based Isogeometric Heat Conduction Simulation Method

The present invention discloses an isogeometric heat conduction simulation method based on deep learning, which includes the following steps: Step (1) production of a data set; Step (2) proposing a custom loss function and using it for training; Step (3) training a UNet3+ network enhanced by introducing an ISSA module; Step (4) prediction of the optimal network model and result analysis. By adopting the above technical solution, heat simulation analysis and prediction can be carried out on a complex model with consistent topology, and a smooth and continuous simulation solution can be obtained quickly. On the premise of ensuring accuracy, the simulation time is greatly reduced, which is applicable to the scenario of real-time heat simulation analysis where the shape of the CAD model changes continuously. Compared with PINNs, which have been studied more in recent years, the network model in the present invention only takes 0.013 s to carry out heat simulation analysis and prediction on a new CAD model with the same topology; while the network model in PINNs needs to be trained for about 44 minutes to achieve the same accuracy as the present invention for a new CAD model.
Owner:HANGZHOU DIANZI UNIV

Unmanned ship adaptive path planning method considering local obstacle density

Aiming at the problems of low efficiency, path oscillation, local optimal trap and the like of a traditional parameter fixed algorithm in a complex environment, the invention provides an unmanned ship adaptive path planning method considering local obstacle density. The method comprises the following steps: firstly, calculating and expanding node neighborhood obstacle density in real time, adaptively adjusting a gravitational repulsive force coefficient and a mixed weight of node expansion, and hierarchically switching an exploration step length, so as to improve planning efficiency and environmental adaptability; secondly, a composite navigation potential field is constructed by fusing target gravity, obstacle repulsive force and boundary repulsive force, and safety balance of narrow channel and boundary navigation is achieved. And finally, through redundant node pruning, path turning point stretching optimization and cubic B-spline smoothing processing, path curvature continuity is ensured. Simulation and experiments show that compared with a traditional method, the algorithm has the advantages in the sampling point number, the path length and the success rate, the search efficiency is remarkably improved, the search space is compressed, and the unmanned ship task requirement is met.
Owner:HARBIN UNIV OF SCI & TECH

Problem scenario extraction method, device, equipment and medium for traffic flow simulation

This invention discloses a method, apparatus, device, and medium for extracting problem scenarios in traffic flow simulation. The method includes: acquiring real traffic flow data, and generating a continuous simulation test scenario and a traffic flow simulation model based on the real traffic flow data; then, running the traffic flow simulation model in the continuous simulation test scenario; when a vehicle alarm information corresponding to the test vehicle simulation model is detected by a preset vehicle alarm detection method, the current test scenario is determined as a problem scenario, and the vehicle driving parameters corresponding to the problem scenario are obtained. The technical solution of this embodiment, by employing a preset vehicle alarm detection method, can achieve rapid identification and location of problem scenarios during continuous traffic flow testing, thereby improving the efficiency of finding problem scenarios in traffic flow simulation testing.
Owner:CHINA FAW CO LTD

Construction calculation method for whole process of large-span crossing water area conductor disconnection and pay-off

PendingCN122365986AElement modelRiver bed
The application provides a large-span crossing water area conductor dismantling and releasing process construction calculation method, and belongs to the technical field of power transmission line construction simulation. The method first acquires tower position, materials, environment, construction control and other engineering basic data, and establishes a three-dimensional finite element model of the conductor composed of eight-node three-dimensional entity units; then constructs a global stiffness equation, and applies external loads such as self-weight, hydrodynamic load and constraints such as releasing end and riverbed contact in combination with construction stages and spatial positions; the precondition conjugate gradient method is used to solve the equation to obtain node displacement, and then the mechanical parameters of the unit are calculated and the conductor cracking and shearing states are identified; finally, the conductor geometric shape is updated, and the releasing and collecting process simulation is iteratively completed. The application realizes continuous simulation of the whole construction process, comprehensively considers the coupling effect of multiple loads, improves the stress deformation analysis accuracy, can output multiple construction evaluation indexes, is suitable for construction simulation of various types of slender flexible components, and has good engineering popularization.
Owner:CHINA THREE GORGES UNIV

SIR-based radio frequency microstrip filter with independently reconfigurable order and frequency

The invention relates to the technical field of reconfigurable filters, in particular to an order and frequency independent reconfigurable radio frequency microstrip filter based on an SIR, a band-pass filter of which the center frequency and the order can be independently adjusted is designed based on an asymmetric structure of the SIR, and a variable capacitance diode and an adjustable coupling structure are designed and loaded by analyzing the coupling structure; then, a coupling structure of the feed and the input / output resonator is adjusted, such as tap feed, slot feed and feed position, in addition, adjustment can be carried out by changing the capacitance value of the variable capacitance diode, so that a proper external quality factor value is obtained, and the feed design is completed; and finally, through continuous simulation optimization of electromagnetic simulation software such as electromagnetic simulation software and circuit simulation software, the design of the radio frequency microstrip filter with independently reconfigurable order and frequency based on the SIR is realized.
Owner:UESTC (SHENZHEN) ADVANCED RES INST

At-211 online separation process simulation method and platform based on digital twinning

ActiveCN121959972AImprove adaptabilityStable separation behavior characteristicsDesign optimisation/simulationProcess engineeringMaterial distribution
The invention provides an At-211 online separation process simulation method and platform based on digital twinning, relates to the technical field of data processing, and identifies a separation behavior evolution mode based on a data change association relationship in a continuous time interval by collecting process monitoring data reflecting a material distribution state and separation result change in a separation process. And dividing the separation process into a plurality of operation segments. And aiming at different separation behavior evolution modes, respectively constructing digital twin simulation sub-models with different state variable composition modes and state change constraint conditions. In the online simulation process, the corresponding relation between the current separation behavior evolution mode and the adopted digital twinborn simulation sub-model is continuously judged, continuous simulation is maintained when the current separation behavior evolution mode is consistent with the adopted digital twinborn simulation sub-model, existing state continuation is terminated and switched to the matched digital twinborn simulation sub-model when the current separation behavior evolution mode is inconsistent with the adopted digital twinborn simulation sub-model, and the subsequent simulation evolution process is reestablished. Therefore, simulation of the multi-stage operation state of the At-211 online separation process is realized.
Owner:FUJIAN RUISIKE MEDICAL TECHNOLOGY CO LTD

Flood deduction method capable of being embedded into embankment breach in real time based on human-computer interaction

The invention discloses a flood deduction method capable of being embedded into an embankment breach in real time based on man-machine interaction. The method comprises the following steps of 1, obtaining basic data; step 2, deducing regional grid discretization; step 3, performing model parameter assignment and initialization; 4, model flux calculation; 5, setting a model thread; step 6, packaging the model; and step 7, terminal man-machine interaction setting. According to the method, the new breach can be added in real time in the model calculation process, the breach information is transmitted to the running model main thread in real time by adopting a double-thread technology, uninterrupted continuous simulation of the water flow process is realized, the defect that the breach position can only be fixed in advance in an existing dike burst flood deduction mode is overcome, and the method is suitable for large-scale popularization and application. And a new and more flexible flood deduction mode is provided for intelligent water conservancy informatization construction.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES

Fault zone tunneling and grouting integrated rock burst simulation test system and method

The invention belongs to the technical field of coal mining simulation tests, and particularly relates to a fault zone tunneling and grouting integrated rock burst simulation test system and method. The test system comprises a triaxial confining pressure loading unit, a modular boundary constraint unit, a data monitoring feedback unit, a roadway tunneling unit and a fault grouting unit. The modularized boundary constraint unit comprises a test cavity which is defined by a first loading plate, a second loading plate, a third loading plate, a fourth loading plate, a first barrier plate and a second barrier plate and is used for accommodating a sample; each of the first loading plate and the second loading plate comprises two segmented plates, and the two segmented plates are connected through an inclined plane; the defect that a traditional test process is split is overcome, integrated continuous simulation from stress loading, fault slippage, tunneling disturbance to grouting reinforcement is achieved, and reliable experimental equipment and theoretical support are provided for deep underground engineering disaster prevention and control.
Owner:CHONGQING UNIV

Simulation method of abrasive jet machining of particle reinforced composites based on discrete element method

The present invention discloses a method for simulating abrasive jet machining of particle-reinforced composite materials based on a discrete element method, comprising: obtaining machining process simulation parameters according to an actual machining system; establishing a geometric model of an abrasive jet and a composite material at a millimeter scale, dividing a structured grid based on the finite element method to perform macroscopic mechanical simulation calculations of the abrasive jet and the plate, and obtaining the stress and dynamic pressure distribution on the surface of the composite material; establishing a geometric model of the composite material particle phase and matrix phase at a micrometer scale, dividing an unstructured grid based on the finite element method, and setting the material parameters of the particle phase and matrix phase, applying the surface stress and dynamic pressure distribution results of the material in the millimeter-scale simulation calculation as pressure boundary conditions to the upper surface of the matrix phase geometric model in the micrometer-scale model, and performing continuous simulation calculations. The present invention provides guidance for abrasive jet machining of particle-reinforced composite materials, reduces trial and error costs, and improves the efficiency of abrasive jet machining of particle-reinforced composite materials.
Owner:BEIJING SATELLITE MFG FACTORY

Tactical simulation deduction method based on heterogeneous computing power collaboration

The invention discloses a tactical simulation deduction method based on heterogeneous computing power collaboration, and relates to the technical field of tactical simulation deduction, and the method comprises the following steps: constructing a simulation index structure used for distinguishing an initialized unit from a non-initialized unit, recognizing a newly-added combat unit in a simulation operation process, and carrying out the calculation of the newly-added combat unit; marking the newly added combat unit as a temporarily added combat unit based on the identification result; the method comprises the following steps: acquiring state change data and behavior instruction sequences in a plurality of continuous simulation frames on the basis of a marked temporarily-added combat unit, constructing a behavior event sequence matrix, calculating a behavior change quantity between frames by adopting a sliding window weighted summation algorithm, and establishing a short-time behavior change speed index on the behavior event sequence matrix. According to the method, the problem that the calculation power adaptation is not accurate when a combat unit is temporarily added is solved, the heterogeneous calculation power resource dynamic adjustment based on the behavior change speed is realized, and the simulation response efficiency and the time sequence precision are improved.
Owner:UNIV OF SCI & TECH OF CHINA

Simulated working condition test method for remote vehicle control

The invention discloses a simulation working condition test method for remote vehicle control, and the method comprises the specific steps: S1, obtaining various simulation working condition data for remote vehicle control, and constructing a simulation working condition database based on the simulation working condition data; s2, calculating relevance weights among the simulation working conditions, quantifying relevance strength among the simulation working conditions based on the relevance weights, and constructing a continuous simulation working condition combination according to the relevance strength; s3, determining a working condition stage and a transition stage in the simulated working condition combination, generating a remote control instruction according to the type of the working condition stage, and meanwhile, generating an interference event and injecting the interference event into the transition stage; s4, a remote control instruction is sent to the tested vehicle, dynamic parameters of the tested vehicle in the transition stage are collected, and the performance of the tested vehicle is evaluated based on the dynamic parameters; different from traditional single simulation working condition detection, a transition stage between simulation working conditions is introduced, so that dynamic parameter acquisition in the transition stage can be focused, and the accuracy of a safety test result is ensured.
Owner:CHANGCHUN AUTOMOTIVE TEST CENT

Simulation method, device and equipment for OLED inkjet printing and storage medium

The present application relates to the technical field of simulation, and particularly relates to an OLED inkjet printing simulation method, device, equipment and storage medium, the method solves the technical pain point that a single modeling framework is difficult to consider simulation accuracy and calculation efficiency in the prior art by configuring simulation resources in stages, dynamically determining stage switching and sequentially delivering stage information; specifically, stages are divided according to the physical evolution law of the inkjet process, so that each stage model is accurately matched with the dominant physical mechanism, the dynamics characteristics of key behaviors such as ink supply response, liquid column necking, droplet shape adjustment and the like are finely depicted, calculation redundancy of non-key stages is reduced through an adaptive simplification strategy, continuous simulation of the whole process from jet start to droplet deposition is realized, physical quantity conservation and evolution consistency are ensured, simulation accuracy and calculation efficiency are significantly improved compared with traditional methods, pixel deposition consistency is effectively improved, and actual process trial and error cost is reduced.
Owner:JIHUA LAB

A flood deduction method based on human-computer interaction can be embedded in embankment breach in real time

The application discloses a flood deduction method based on human-computer interaction and capable of embedding embankment breach in real time, and the method comprises the following steps: step 1, acquiring basic data; step 2, deducing regional grid discretization; step 3, model parameter assignment and initialization; step 4, model flux calculation; step 5, model thread setting; step 6, model encapsulation; and step 7, terminal human-computer interaction setting. The method can add a new breach in real time in the model calculation process, adopts a double-thread technology to transfer the breach information to a main thread of a running model in real time, realizes uninterrupted and continuous simulation of a water flow process, overcomes the defect that an existing embankment breach flood deduction mode can only fix a breach position in advance, and provides a new and more flexible flood deduction mode for intelligent water conservancy informatization construction.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES