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83 results about "Dynamic design" patented technology

Laser cutting machine tool real-time design method based on digital twinning

The invention relates to the technical field of laser cutting equipment, and discloses a laser cutting machine tool real-time design method based on digital twinning. The method comprises the following steps: acquiring real-time operation data from distributed sensor nodes, wherein the real-time operation data comprises design change historical records and laser cutting track information; in a digital twin fusion design mode, performing compensation check on a design change historical record to obtain a design attribute index, and determining a trajectory interaction period of a design object on a cutting path according to the design attribute index; processing path information is obtained, risk characteristics are analyzed, cutting node risk data are obtained, and the risk situation level is determined in combination with laser cutting track information; and according to the track interaction period and the risk situation level, a dynamic design blind area in the laser cutting design process is optimized and adjusted. According to the method, the real-time data technology and the digital twinning technology are fused, the real-time performance and accuracy of design can be improved, and dynamic changes of a complex processing environment can be coped with.
Owner:SHANDONG HONGYU MASCH TECH CO LTD

Underground engineering surrounding rock excavation-support parameter dynamic design method and system

The invention provides an underground engineering surrounding rock excavation-support parameter dynamic design method and system, and the method comprises the steps: obtaining the geological features and mechanical parameters of an underground engineering construction region, and building a three-dimensional numerical model according to the geological conditions; performing a numerical simulation experiment according to the three-dimensional numerical model on the basis of an excavation mode and support parameters of the underground engineering construction area, and generating a surrounding rock excavation dynamic response database and a surrounding rock support dynamic response database by taking surrounding rock deformation as an index; an underground engineering excavation scheme design model based on a GA-BP algorithm is constructed, training is conducted through the surrounding rock excavation dynamic response database, and an optimal excavation mode is determined; and constructing an underground engineering support design scheme model based on a PSO-DNN algorithm, and training by using the surrounding rock support dynamic response database to obtain a support scheme under the optimal excavation mode. The dynamic response characteristics of the surrounding rock can be effectively predicted, an excavation support design scheme is optimized, and the safety and economical efficiency of underground engineering are improved.
Owner:POWERCHINA HUADONG ENG CORP LTD +1

Kilometer deep well roadway toughness regulation and control supporting system and dynamic design method

The invention discloses a kilometer deep well roadway toughness regulation and control supporting system and a dynamic design method, and belongs to the field of deep well roadway supporting. The supporting system comprises a multi-layer collaborative structure and an intelligent regulation and control module, the multi-layer collaborative structure sequentially comprises a shape memory alloy energy absorption layer used for resisting impact loads and a gradient pore foam metal buffer layer used for energy grading dissipation from inside to outside, and the multi-layer collaborative structure is connected with roadway surrounding rock in an anchoring mode through an anchor rod anchoring structure; the intelligent regulation and control module comprises a distributed optical fiber sensor array used for monitoring surrounding environment signals of surrounding rock in real time, an electrostriction driver used for regulating and controlling the rigidity of the multi-layer cooperative structure and a multi-channel data fusion terminal used for achieving underground and surface data transmission synchronization. By the adoption of the kilometer deep well roadway toughness regulation and control supporting system and the dynamic design method, the problems that a traditional supporting mode is too high in material rigidity, lacks dynamic regulation and control capacity and is insufficient in impact toughness can be solved.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Magnetic levitation vehicle nonlinear prediction control method and device based on PINN and medium

The invention discloses a PINN-based magnetic levitation vehicle nonlinear predictive control method and device and a medium, and relates to the field of rail transit, and the predictive control method comprises the following steps: S1, constructing a dynamic model; s2, learning and approaching unknown dynamic and time-varying parameters in the dynamic model by adopting a physical information neural network; s3, designing an optimization cost function meeting system input and output constraints based on the unknown dynamic state of the dynamic model predicted by the physical information neural network; and S4, constructing a step-by-step variable terminal constraint set to process input time lag. In a controller design and theoretical analysis process, a non-linear dynamic form of a system is completely reserved, and a stepping variable terminal constraint set suitable for input time delay is constructed, so that the controller can still maintain stability and dynamic performance under the condition that a system state obviously deviates from a balance point. According to the method, the operation safety and the control precision of the maglev vehicle under complex working conditions such as parameter drift and time lag disturbance are effectively improved.
Owner:TONGJI UNIV

Determination method and system for deep grooving excavation high slope unloading area support scheme

InactiveCN120408811AGeometric CADData processing applicationsEfficiency comparisonRock body
According to the method and the system for determining the support scheme of the deep grooving high slope unloading area provided by the invention, the time-varying characteristic quantitative characterization of the mechanical parameters of the slope rock mass in the slope grooving process is realized by establishing a three-dimensional dynamic system of the unloading damage coefficient calculation model, the mechanical parameter degradation model and the mechanical parameter repair model; a traditional static reduction method is broken through, differential parameter assignment of different positions is achieved in the spatial dimension, and engineering practice is met; the rock mass damage accumulative effect caused by excavation unloading is fully considered, and the accuracy of supporting parameters is greatly improved; and the optimal supporting scheme for excavating each layer is finally selected based on the economical efficiency comparison value index, so that the economical efficiency and rationality of the supporting measures are greatly improved. The dynamic design of the support scheme combination of the deep cutting groove excavation high slope is realized through the dynamic change of mechanical parameters in the groove excavation process.
Owner:CHANGJIANG SURVEY PLANNING DESIGN & RES CO LTD

Rapid quantitative evaluation method for stability of deep tunnel surrounding rock in high tectonic stress area

The invention provides a rapid quantitative evaluation method for stability of deep tunnel surrounding rocks in a high tectonic stress area, and belongs to the technical field of deep tunnel surrounding rocks. The method comprises the steps of providing a numerical value and analytical method for analyzing external stress distribution of a surrounding rock loose circle of a deep tunnel in a high tectonic stress area, then providing a surrounding rock loose circle range evaluation method fusing the numerical value and the analytical method, and finally rapidly predicting the maximum thickness of the surrounding rock loose circle through two dimensionless factors capable of reflecting high tectonic stress characteristics. According to the method, aiming at the deeply-buried tunnel in the high tectonic stress area of the Sichuan-Tibet railway, an analysis method considering engineering calculation precision and speed requirements is developed by taking deep rock mass engineering digital-numerical value integrated analysis as an idea and combining natural advantages of a prior analysis method in the aspect of rapid calculation; the important requirements of dynamic design of deep tunnel engineering and three-dimensional positive analysis of surrounding rock stability are met.
Owner:TONGJI UNIV +1

Dynamic design method for TBM tunnel supporting structure

The invention discloses a dynamic design method for a TBM tunnel supporting structure, which belongs to the technical field of tunnel construction and comprises the following steps: S1, calculating supporting stiffness generated by different supporting operations according to actual tunnel surrounding rock parameters, supporting parameters and construction procedures, and calculating virtual supporting force; s2, constructing a two-dimensional plane strain model, substituting the support rigidity obtained in the step S1 into the model to calculate final settlement of the tunnel, and obtaining reasonable surrounding rock parameters required by numerical simulation under the surrounding rock condition of the tunnel; and S3, three-dimensional rough hole excavation model calculation is carried out, a surrounding rock pressure release rule is obtained, supporting resistance is adjusted by adjusting supporting parameters, and optimal selection of the supporting parameters is carried out while the surrounding rock pressure release rule is met. According to the dynamic design method for the TBM tunnel supporting structure, the supporting scheme can be adjusted according to different surrounding rock parameters, so that the supporting design is more efficient, the construction cost is effectively reduced, and the construction efficiency and the supporting quality are improved.
Owner:CHINA RAILWAY ECONOMIC & PLANNING RES INST +3

Multi-agent collaborative optimization scheduling method and device based on peak regulation market dynamic rule formulation

The invention discloses a multi-agent collaborative optimization scheduling method and device based on peak regulation market dynamic rule formulation, and the method comprises the steps: carrying out the refined classification of resources in multiple agents according to the physical characteristics and adjustment flexibility of the resources, building a multi-dimensional classification system, and providing a data basis for the dynamic design of rule parameters; an accurate description model is established for each type of resources, and feasible regions and cost characteristics of the resources in a peak regulation market are quantified; establishing dynamic association between resources and peak regulation market rules, embedding rule parameters into the optimization model, and constructing a power market optimal rule model containing multiple agents; and constructing a double-layer collaborative optimization strategy, solving the model and outputting an optimal rule of the current peak regulation market, and realizing market rule dynamic optimization and resource collaborative scheduling. According to the method, the static limitation of a traditional peak regulation market rule is broken through, dynamic matching of rule parameters and resource characteristics is achieved through multi-agent collaborative optimization, and the new energy consumption capacity and the market operation efficiency are effectively improved.
Owner:ZHEJIANG UNIV

Building block report zero code visualization dynamic design multi-terminal adaptation system and method

The invention discloses a building block report zero-code visualization dynamic design multi-terminal adaptation system and method, and relates to the technical field of data visualization and report generation. The method comprises the following steps: component templated multiplexing: generating a component template with a unique identifier by extracting complete configuration of a configured component, separating basic parameters from instance parameters by adopting a double-layer parameter structure, and maintaining a directed acyclic graph structure through a dependency tracking engine to realize batch synchronous updating; performing multi-terminal intelligent adaptation, constructing a terminal characteristic library to store different terminal parameters, setting adaptive rules for various components, and automatically adjusting the component size, layout and interaction mode by identifying an access terminal; and carrying out visual binding on the business rules, constructing business rule logic through a dragging operator, and establishing rule-component association mapping. According to the method, the component reuse rate is increased by 80%, the report development period is shortened by 70%, and an efficient, intelligent and easy-to-use complete solution is provided for enterprise-level zero code report development.
Owner:HAIER CONSUMER FINANCE CO LTD

Mix proportion optimization method for high-slump-loss-resistant long-distance transportation concrete

The invention relates to the field of building materials, and discloses a mix proportion optimization method for high-slump-loss-resistant long-distance transportation concrete, which comprises the following steps: according to the engineering strength requirement of the concrete, designing basic parameters of the concrete, including strength grade, slump, transportation distance and environmental condition; selecting proper raw materials and determining the proportion; carrying out dynamic design and aggregate interface modification treatment, and treating the aggregate by adopting a silane coupling agent and a nano nucleating agent; the mixing process is optimized, and the stirring sequence and time are controlled; carrying out rheological property test and adjustment; slump retaining control is carried out in the transportation process, the slump degree is monitored in real time, and a water reducing agent is supplemented; and finally, verifying the adaptability on the construction site to ensure that the concrete performance meets the requirements. According to the invention, a staged charging and orderly dispersing process is adopted, and dynamic water replenishing and slump retaining control is combined, so that the technical effect of improving the workability of the concrete is achieved, and excessive loss of slump of the concrete in the transportation process is effectively prevented.
Owner:BEIJING MINJIA CONCRETE CO LTD

Isogeometric topological optimization method based on dynamic response driving and application thereof

The invention belongs to the field of material structure optimization, and particularly relates to an isogeometric topological optimization method based on dynamic response driving, which comprises the following steps of: (1) establishing a thin shell mid-plane geometric representation model based on a T spline and Bessel extraction technology; (2) establishing a frequency response-oriented isogeometric shell unit based on the Kirchhoff theory; (3) solving the aerodynamic response of the surface of the structure based on a high-order panel method of a T spline; (4) constructing a topology description model of the thin shell based on a Bessel unit; (5) establishing a structure dynamic flexibility minimum topological optimization model oriented to the dynamic response of the pneumatic thin shell; (6) dynamic flexibility minimization sensitivity analysis and derivation; and (7) updating optimization model design variables based on an optimal criterion method. According to the method provided by the invention, a pneumatic coupling thin shell dynamic isogeometric analysis framework is constructed, and the problems of poor geometric adaptability, difficulty in complex thin shell dynamic design, lack of pneumatic environment related to optimization and the like in an existing method are effectively solved.
Owner:HUAZHONG UNIV OF SCI & TECH

Airport photovoltaic planning design method based on BIM model

The invention discloses an airport photovoltaic planning and designing method based on a BIM model. The method comprises the following steps: combing the layout logic and flow of a photovoltaic panel assembly in combination with photovoltaic panel assembly planning layout requirements; the method comprises the following steps: performing secondary development based on an Autodesk platform, compiling a photovoltaic module set relationship, defining a relationship between a photovoltaic module and topography and geology based on a target parameter and a condition parameter, compiling a cross section of the photovoltaic module into a parameterized component, endowing a code, realizing parameterized dynamic design of a photovoltaic bracket and a photovoltaic panel, and importing a customized parameterized photovoltaic panel component into civil3D software. Creating a three-dimensional parameterized dynamic model of the photovoltaic panel assembly adapted to topographic conditions, acquiring a three-dimensional parameterized curved surface at the top of the photovoltaic panel assembly, and quickly responding to scheme change caused by electromagnetic and glare analysis and creating conditions for clearance recheck; and taking the top three-dimensional parameterized curved surface of the photovoltaic panel assembly as a contrast curved surface, and performing height difference analysis on the contrast curved surface and the clearance limiting surface to realize synchronous height limiting recheck of the top surface of the photovoltaic panel and the clearance limiting surface of each region.
Owner:POWER CHINA KUNMING ENG CORP LTD

Air flow simulation-based stake car wind resistance dynamic optimization method and system

The invention discloses a stake car wind resistance dynamic optimization method and system based on airflow simulation, and belongs to the field of automobile pneumatic optimization. A stake car three-dimensional structure model is constructed, and spatial distribution parameters and surface roughness parameters of a stake component are extracted; establishing a multi-working-condition external flow field simulation model, and obtaining a unit area wind resistance coefficient distribution diagram; constructing a wind resistance sensitivity matrix, and identifying a high-sensitivity component; performing disturbance modeling on the high-sensitivity component, generating a local deformation configuration sample and establishing a simulation model set; parallel simulation calculation is carried out, and wind resistance coefficient and aerodynamic stress data are extracted; based on a multi-objective optimization algorithm, determining an optimal disturbance configuration; outputting a structure adjustment suggestion for guiding dynamic design optimization; according to the method, collaborative optimization of wind resistance reduction and structure safety can be achieved, and the pneumatic performance and the energy-saving level of the whole stake car are improved.
Owner:JIANGXI JIANGLING SPECIAL VEHICLE FACTORY

Parameterization design method of speed brake mechanism applied to wide-area aircraft

The invention discloses a parameterization design method for a speed brake mechanism applied to a wide-area aircraft. The parameterization design method comprises the steps that the maximum resistance increment and the target resistance increment of the speed brake mechanism are determined; determining constraint conditions of reference design parameters and dynamic design parameters, and constructing a resistance increment mathematical model based on a radial basis function; the maximum resistance increment is substituted into the mathematical model, the extension length of the auxiliary board and the opening angle of the main board are made to be maximum values of constraint conditions, an optimization equation is built, and an optimal reference design parameter combination meeting the maximum resistance increment requirement is obtained; the target resistance increment is substituted into the mathematical model, an optimization equation is constructed by taking the reference design parameters as optimal reference design parameters, and an optimal dynamic design parameter combination meeting the target resistance increment requirement is obtained; and performing simulation verification on the optimal design parameter combination until the design is verified to be qualified, and outputting final design parameters. Wide-range adjustment of resistance can be achieved, accurate control over resistance errors is achieved, and the wide-range aircraft resistance increasing requirement is met.
Owner:AERONAUTICS RES INST OF CHINA

Tire curved surface two-dimensional code laser dynamic compensation engraving method guided by three-dimensional vision

The invention belongs to the technical field of laser precision machining, and discloses a three-dimensional vision guided tire curved surface two-dimensional code laser dynamic compensation engraving method. The method comprises the steps that area curvature parameters are obtained based on a preset tire curvature database, the overall structure of the curved surface two-dimensional code is dynamically designed, and a laser engraving path is dynamically planned in combination with the area curvature parameters; curved surface two-dimensional code engraving is carried out based on the laser engraving path, and local point cloud data are collected in real time; performing curved surface fitting on the local point cloud data, calculating a local curvature parameter, and performing curvature correction on the corresponding regional curvature parameter to obtain a local corrected curvature; based on the local correction curvature, the focus compensation amount and the delay compensation amount are calculated in real time, and dynamic compensation is carried out on the engraving process of the curved surface two-dimensional code; according to the method, area self-adaption and depth precise control of the curved surface two-dimensional code can be realized, and local curvature change of the tire surface is compensated in real time in the laser engraving process, so that the recognition stability and the overall visual effect of the curved surface two-dimensional code are improved.
Owner:SHANGHAI GU DE INTELLIGENT TECH CO LTD

Tunnel support dynamic design construction method based on rapid evaluation of surrounding rock level

The invention discloses a tunnel support dynamic design construction method based on surrounding rock grade rapid evaluation, and relates to the technical field of tunnel support construction. The tunnel support dynamic design and construction method based on the rapid evaluation of the surrounding rock level comprises the following steps: S1, collecting early-stage investigation and design data, and compiling a tunnel construction organization design; and S2, tunnel excavation and supporting are carried out according to the design scheme, and tunnel advanced geological forecast and tunnel monitoring measurement are carried out according to conditions. According to the method, real-time evaluation on the stability of the surrounding rock is realized by adopting a field rapid test technology such as a point load test and a rebound method and combining with an advanced neural network analysis model, intelligent optimization design is performed on a supporting structure accordingly, monitoring on the surrounding rock in the construction process is combined, an evaluation model is corrected, and the stability of the surrounding rock is evaluated. The accuracy of evaluation results and the pertinence of design achievements are continuously improved, and safe and rapid construction is achieved.
Owner:CHINA RAILWAY LIUYUAN GRP CO LTD

storage basket

The article is a collapsible storage basket that can be assembled by fastening buttons. The design is a dynamic design, and the storage basket shown in the assembled "plan view," "right side view," "reference perspective view," etc. changes to the "expanded plan view" and "expanded right side view" when the buttons are removed and the basket is unfolded.
Owner:BANSY CO LTD

An information technology service mechatronic design platform for underground special treasure vaults

The application belongs to the technical field of design platform, and particularly relates to a machine-electricity integration design platform for information technology service of underground special hidden vault, which comprises an information modeling unit, a dynamic design unit, a construction monitoring unit and a shared cloud platform, the construction monitoring unit collects measurement values during the construction of the vault; when the geological conditions are not ideal, the design platform first excavates a tunnel which is small in space and easy to excavate; then the first monitoring module is driven into the tunnel by the moving module to detect the rock stratum and water leakage in the tunnel; subsequently, the first monitoring module transmits the collected data to the data arrangement module in a wired transmission mode, the design platform analyzes and arranges the data collected by the first monitoring module, and the data serves as a data support for the secondary forming of the tunnel expansion vault, so that the design platform adopts different construction methods and measures for the first forming and the second forming of the vault excavation work, and the use convenience is improved.
Owner:CHINA RAILWAY TUNNEL GROUP CO LTD +2

Dynamic graphical user interface for monitoring waste compression and transportation of electronic devices

1. Name of the product in this design: Dynamic graphical user interface for monitoring waste compression and transfer in electronic devices. 2. Purpose of this design: An electronic device. 3. The key design features of this product are: the graphical user interface content of the electronic device. 4. The picture or photo that best illustrates the key design points: Design 1 front view. 5. Design 1 is designated as the basic design. 6. Purpose of the graphical user interface: This graphical user interface is used to monitor and manage the operation of the vertical waste compression transfer station equipment and display the equipment's operating dynamics. 7. Human-computer interaction method of graphical user interface: The main view of Design 1 is the main interface for monitoring and management of waste compression transfer station. When the user triggers the button in the equipment operation area on the right side of the interface, the device can be monitored in real time in the monitoring area on the left side of the interface. For example, when the user triggers the button "1" in the compactor operation unit in the upper right of the main view of Design 1, the compactor can be moved to station 1. The interface will display the dynamics as shown in the interface change state diagrams 1 to 11 of Design 1 in sequence. Design 2's main view shows the working status interface of the compactor when it is in place. After the compactor moves to the workstation, the user triggers the "Compress" button in the compactor operation unit on the right. The compactor will automatically perform a compression action. For example, when the user triggers the "Compress" button in the compactor unit on the right side of the main view of Design 2, the interface will display the dynamics shown in Design 2 interface change state diagrams 1 to 5 in sequence. After the compactor is compressed, it will automatically retract. Design 3's main view shows the interface with the garbage compression and transfer container door at position 1 closed, the transfer container horizontally positioned, and the hopper raised. When the user triggers the frame-flipping function of the bulk loading machine operation unit on the lower right, the operation of the equipment can be monitored in real time on the left side of the interface. For example, when the user triggers the "vertical box" button at position 1 on the lower right of the main view of Design 3, the frame will flip, and the interface will display the dynamic state shown in Design 3 interface change state diagrams 1 to 5 in sequence. Design 4's main view shows the interface with the garbage compression and transfer container door at position 1 closed, the transfer container upright, and the hopper raised. When the user triggers the frame-flipping function of the bulk loading machine operation unit on the lower right, the operation of the equipment can be monitored in real time on the left side of the interface. For example, when the user triggers the "flatten container" button at position 1 on the lower right of the main view of Design 4, the frame will flip, and the interface will display the dynamic state shown in Design 4 interface change state diagrams 1 to 5 in sequence. Design 5's main view shows the interface with the garbage compression and transfer box door at position 1 closed, the transfer box upright, and the hopper raised. The user can trigger the control button on the garbage box door of the bulk loader operation unit on the lower right to set the garbage box door status. For example, if the user triggers the "Open" button on position 1 on the lower right of the main view of Design 5, the garbage box door will be opened, and the interface will display the dynamic state changes shown in Figures 1 to 5 of Design 5. The main view of Design 6 shows the interface with the garbage compression and transfer box door at position 1 fully open, the transfer box upright, and the hopper raised. The user can set the garbage box door status by triggering the control button on the garbage box door of the bulk loading machine operation unit at the lower right. For example, if the user triggers the "Close" button at position 1 at the lower right of the main view of Design 6, the garbage box door will close, and the interface will display the dynamic state changes shown in Figures 1 to 5 of Design 6. The main view of Design 7 shows the interface with the garbage compression and transfer box door in position 1 fully open, the transfer box upright, and the hopper raised. When the user triggers the operation button of the receiving hopper of the bulk loading machine operation unit on the lower right, the garbage bin hopper can be set. For example, when the user triggers the "Lower" button of position 1 on the lower right of the main view of Design 7, the garbage bin hopper will be lowered. The interface will then display the dynamic state changes shown in Figures 1 to 5 of Design 7. The main view of Design 8 shows the interface with the garbage compression and transfer box door in position 1 fully open, the transfer box upright, and the hopper lowered. When the user triggers the operation button of the receiving hopper of the bulk loader operation unit on the lower right, the garbage bin hopper can be set. For example, when the user triggers the "Up" button of position 1 on the lower right of the main view of Design 8, the garbage bin hopper will rise, and the interface will display the dynamic state changes shown in Figures 1 to 5 of Design 8. Design 9's main view is a compactor movement warning interface, indicating that users cannot move the compactor to a workstation in operation.
Owner:ZOOMLION ENVIRONMENTAL IND CO LTD

Inspection of adaptive patterned workpieces with dynamic design and deep learning-based rendering

A reference optical image of a die is determined based on a design file with a deep convolutional neural network for image-to-image translation. The reference optical image is subtracted from the target image thereby generating a difference image. After applying a care area mask, the difference image can be binarized. The resulting binarized defective image can be used for optical inspection.
Owner:KLA CORP

An analysis method and system for an axial plunger pump with bearing fault under a belt liquid working condition

The application provides an analysis method for an axial plunger pump with bearing faults under a liquid working condition, comprising the following steps: constructing a geometric structure model of an equation axial plunger pump rotor system to obtain a fluid acting force equation; decomposing a working medium mass into a rotor additional mass, a shell additional mass and a liquid coupling mass, and combining the fluid acting force equation with a friction force, a centrifugal force and a mass unbalance force equation of a cylinder body assembly to construct an axial plunger pump rotor dynamics equation; constructing a local defect fault dynamics model of a roller bearing to calculate an angular position of roller movement, and when the roller enters a defect, acquiring a time-varying displacement excitation and a time-varying contact stiffness excitation to be assembled into the dynamics equation to obtain a dynamics model with bearing faults; and analyzing the dynamics model with bearing faults to obtain critical rotating speeds of each fault element. By implementing the application, the analysis and calculation results are closer to actual values, and the vibration characteristic analysis and dynamic design work can be better carried out.
Owner:WENZHOU UNIV

Large aspect ratio rotor configuration with split turbine

ActiveCN116517690BSolve the problem of out-of-control deformationSolving the Design Challenges of Rotordynamics with Large Length-to-diameter RatioCombustion chamberGyroscopic moment
The application discloses a large-length-diameter-ratio rotor structure with a separated turbine, comprising a four-stage fan, a two-stage front turbine, a single-stage rear turbine, four bearing supporting points, a connecting structure and the like. A 1-2-1 four supporting point supporting scheme is adopted, and an intermediate supporting point is additionally arranged at the front turbine to control the bending deformation of the large-length-diameter-ratio rotor. Meanwhile, the two-stage front turbine in the middle section of the rotor is designed as an integrated ring cavity structure, the structure angular rigidity is enhanced, and the overall gyroscopic moment effect is exerted. The front turbine and the rear turbine are connected with the rotor shaft through a large-space double-centering-face stop mouth-toothed sleeve connection, the bending moment bearing capacity is improved, the gyroscopic moment of the wheel disc is fully applied to the shaft section, the rotor resonance speed safety margin is improved, and the bending deformation is controlled. The application is the first rotor structure proposed for a new engine with an inter-stage combustion chamber, and meets the dynamic design requirements of the rotor with the characteristics of the multi-stage separated turbine and the large-length-diameter ratio.
Owner:BEIHANG UNIV

Reverse dynamics design method for tumbler node of high-speed train based on dynamic demand

The invention relates to the technical field of rail transit vehicle dynamics and intelligent suspension control, in particular to a high-speed train rotating arm node reverse dynamics design method based on dynamic requirements, which comprises the following steps: S1, constructing a mapping relation between vehicle dynamics performance and node rigidity, the method comprises the steps of S1, establishing a mapping relation between node rigidity and a magneto-sensitive elastomer material and structure, S3, establishing a magneto-sensitive elastomer node database, S4, carrying out reverse design based on a dynamic demand matrix, and S5, carrying out semi-active rigidity regulation and hardware-in-the-loop verification based on a controllable magnetic field. According to the invention, material and structure design parameters of the damping element can be deduced reversely, a multi-dimensional parameter database can be established, computable performance reverse indexing can be realized, a simulation-test-database self-learning mechanism is formed by combining a mechanical model and a test, and a closed-loop verification platform is constructed between a whole vehicle simulation model and a rack system. And engineering landing of the design method is realized.
Owner:SHIJIAZHUANG TIEDAO UNIV

Method for optimizing design parameters of overall dynamic structure of aero-engine

The invention belongs to the field of engine design, and particularly relates to an aero-engine whole machine dynamic structure design parameter optimization method, which utilizes an APDL language of ANSYS software to carry out parametric modeling on an aero-engine whole machine (including a rotor, a support and a stator casing), and applies additional centrifugal force and additional gyroscopic moment generated by maneuvering flight. The stress level of the bearing case, the strain energy distribution of a rotor system and the rotor and stator gap change are obtained through bearing case stress analysis, critical speed analysis and unbalanced response analysis. Based on the analysis results, multi-objective optimization is carried out on complete machine dynamic design parameters, so that the stress level of a force bearing casing is lowest, rotor strain energy distribution meets rotor dynamic design requirements, rotor and stator gap changes are minimum, the rub-impact risk is reduced, optimization of the structural design parameters is completed through software, the design efficiency is improved, and the design cost is reduced. The design period is shortened.
Owner:AECC SHENYANG ENGINE RES INST

Method and system for the automated dynamic design of a technical component

The invention relates to a method for the automated dynamic design of at least one technical component, comprising an input module (200), a reward module (300), a learning reinforcement module (400) with a learning reinforcement agent (410) and an action module (420), a design module (500) with an environment module (510) and a state module (540), and an output module (700), comprising the following steps: - Generating a design draft (520) for a design goal (390) in the form of a state (S i ) from the construction module (500); - Evaluating the generated state (S i ) from the reward module (300) with a target state (S t ) and determining an objective indicator value (340); - Generating a subjective indicator value (370) from subjective evaluations of the design (520) by a user; - Generating an emotional indicator value (380) from the user's emotional state data (290); - Calculating a reward (320) using a reward function (330), where the reward function (330) takes into account the objective indicator value (340), the subjective indicator value (370) and the emotional indicator value (380); - Selecting an action (A i ) by the learning reinforcement agent (410) due to the reward (320) and generating a modified design draft (520) in the form of a new state (S i+1 )
Owner:DR ING H C F PORSCHE AG

Collision transmission mechanism serialized spare part tolerance design method considering part degradation effect

The invention discloses a collision transmission mechanism serialized spare part tolerance design method considering a part degradation effect. The method comprises the following steps: establishing a linear degradation model of a critical dimension; carrying out tolerance accumulation analysis by adopting a dimensional tolerance accumulation method to obtain a dynamic distribution rule of the assembly precision target; calculating precision reliability based on the distribution; establishing a mapping model of the spare part size and the reliable service time, and determining an optimal tolerance zone center design value and the corresponding reliable service time; establishing a calculation model of the serialized spare part size and the total reliable service time of the mechanism, and formulating a multi-stage replacement strategy; and a genetic algorithm is adopted to carry out multi-objective optimization, and various tolerance schemes are solved and sorted by taking the processing cost, the replacement frequency and the total reliable service time as objectives. The spare part tolerance can be dynamically designed according to the actual degradation state of the part, the service life is effectively prolonged while the assembly precision is guaranteed, the accidental failure rate is reduced, and the optimal balance of cost and reliability is achieved.
Owner:NANJING UNIV OF SCI & TECH

Design method and system for rfq accelerator for medical isotope production

The application relates to the medical technology field and provides a design method and system of an RFQ accelerator for medical isotope production, wherein the design method comprises the following steps: determining a target working frequency range of the RFQ accelerator; based on the target working frequency range, optimizing structure parameters of the RFQ accelerator, determining an optimized dynamic design scheme of the RFQ accelerator; performing high-frequency design on the structure parameters of the RFQ accelerator, determining a high-frequency design scheme of the RFQ accelerator; optimizing structure parameters of a cooling flow channel in the RFQ accelerator, determining a physical design scheme of the RFQ accelerator, and obtaining the RFQ accelerator for medical isotope production. Through selection of the optimal working frequency range of the RFQ accelerator and optimization of the structure parameters of the RFQ accelerator under the optimal working frequency, the length of the RFQ accelerator can be shortened, the production cost can be reduced, and the transmission efficiency of an alpha beam can be improved.
Owner:INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI

Calculation method of crown rock loose collapse depth considering stress superposition effect

This invention provides a method for calculating the collapse depth of the surrounding rock of a top arch. Step S1: Obtain the arch height *a*, tunnel radius *b*, and the boundary angle θ1 of the equivalent four-centered circular arc. Step S2: Based on the data obtained in Step S1, construct an elliptical collapse arch using the four-centered method. Step S3: Perform a force balance analysis on the self-stabilizing surrounding rock in the vertical direction to obtain the equilibrium equation. Step S4: Analyze the equilibrium equation to obtain a transcendental equation containing only one unknown: the angle θ between the direction of the frictional force of the self-stabilizing surrounding rock and the vertical direction. h Step S5: Solve the equilibrium equations using numerical analysis to obtain the collapse depth. This method can accurately predict the collapse depth of the surrounding rock cavity in the tunnel arch and determine the supporting force of the surrounding rock, providing a reasonable dynamic design basis for tunnel construction across fault fracture zones.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION

Metal rubber clamp fine quantitative screening method and system based on hierarchical sensitivity evaluation

The invention belongs to the cross technical field of structural dynamics design and intelligent quality control of high-end equipment, and relates to a metal rubber hoop refined quantitative screening method and system based on hierarchical sensitivity evaluation. High-fidelity dynamic modeling is carried out on a pipeline system, hierarchical global sensitivity evaluation and performance mapping inversion analysis are combined, and a scientific decision link from system-level dynamic performance constraints to component-level key mechanical property acceptance threshold values is constructed. The method aims at thoroughly innovating a traditional hoop screening mode which mainly depends on empirical judgment and unified rigidity threshold values at present, and personalized, quantitative and refined management and control of mechanical properties of hoops with specific pipeline configurations, specific installation positions and specific performance targets are achieved. And a key technical support is provided for improving the vibration safety of a pipeline system and the reliability of a whole machine of complex rotating machinery such as an aero-engine and a gas turbine.
Owner:NORTHEASTERN UNIV CHINA +1

Cutting slope protection structure applied to dynamic design

The utility model relates to the technical field of slope protection, in particular to a cutting slope protection structure applied to dynamic design, which comprises a roadbed supporting component and a slope supporting component, and the roadbed supporting component is arranged below the slope supporting component; the roadbed supporting component comprises at least two ground piles, a base and first anchoring parts, one end of each ground pile is connected with the base, and in the first direction, the other end of each ground pile extends to the position below the ground in the first direction; one end of the first anchoring part is connected with the base, and the other end of the first anchoring part extends into the side slope and is fixed with the side slope; the slope supporting component is laid on the surface of the side slope and used for fixing the side slope, and the problem that a traditional side slope is prone to being affected by heavy rain or debris flow, so that a mountain is unstable, and the side slope collapses is solved.
Owner:CHINA FIRST HIGHWAY ENGINEERING CO LTD +1