17 results about "Deformation velocity" patented technology

The invention relates to an earth surface deformation detection and classification method and system fusing CNN and SBAS-InSAR technologies, and the method comprises the steps: obtaining high-precision deformation data through a small baseline subset and an interference synthesis radar technology (SBAS-InSAR), constructing a CNN classification frame through combining PCA-enhanced optical satellite images, elevation, soil physical parameters, geological landform maps and other multi-source geographic information, and carrying out the detection and classification of the earth surface deformation through the CNN classification frame and the SBAS-InSAR technology. And identification of deformation types such as landslide, settlement and lifting is realized. The process comprises multi-source satellite data acquisition and preprocessing (including InSAR sight velocity decomposition and optical / topographic feature extraction), generation of a preliminary deformation label based on a classification algorithm of a gradient and a deformation velocity threshold, and recognition of a deformation type through a multilayer CNN model. According to the method, the deformation mode is automatically clustered and analyzed in a large-range area, the accuracy and detail performance of deformation type recognition are remarkably improved, the accuracy rate reaches 93%, the method is superior to a traditional method, a stable and extensible tool platform is provided for geological disaster monitoring, and positive risk management of landslide or land subsidence prone areas is assisted.

The invention provides a toppling deformation body fracture precursor identification method based on acoustic emission monitoring, which comprises the following steps: setting a monitoring area in a toppling deformation body, installing an acoustic emission sensor, and continuously monitoring the acoustic emission intensity by taking the time length t1 as a period. And establishing a relation equation between the acoustic emission intensity and the deformation, measuring the horizontal displacement of each point by using the total station, and calculating the deformation D of each point except the reference point. And converting the deformation D into acoustic emission frequency N and duration, drawing a correlation curve, and calculating a deformation speed v and a deformation speed change rate a. The fracture precursor or deformation body stability is judged according to indexes such as acoustic emission frequency, duration and progressive increase rate, and an early warning scheme is formulated and implemented according to the fracture precursor or deformation body stability. According to the invention, timeliness and reliability of geological disaster prevention can be improved.

The present invention provides a stirring blade or the like that can efficiently apply shear force to fluids with a Reynolds number of 300 or higher. [Solution] The stirring blade 3 is a stirring blade 3 that stirs a fluid F by rotating around a rotating shaft 30, and generates a flow of fluid F with a Reynolds number of 300 or more, in which, in a region of 5% or more of the flow, the ratio of the deformation velocity tensor to the fluid velocity gradient tensor, which is the sum of the deformation velocity tensor and the rotation velocity tensor, is 0.8 or more. It comprises a plurality of plate-shaped members 311 to 314 that are rotatable at different positions in the radial direction perpendicular to the axial direction in which the rotating shaft 30 extends. It comprises two to five plate-shaped members 311 to 314 that are rotatable at two to five different radial positions.

Provided are a stirring blade and the like capable of effectively applying a shear force to a fluid having a Reynolds number of 300 or more. The stirring blade (3) stirs a fluid (F) by rotating about a rotating shaft (30), the stirring blade (3) generates a flow of the fluid (F) having a Reynolds number of 300 or more, and in a 5% or more region of the flow, the ratio of a deformation velocity tensor to a velocity gradient tensor of the fluid, which is the sum of a deformation velocity tensor and a rotational velocity tensor, is 0.8 or more. The stirring blade (3) is provided with a plurality of plate-shaped members (311-314) capable of rotating at different positions in the radial direction perpendicular to the axial direction in which the rotating shaft (30) extends. The present invention is provided with two or more and five or less plate-shaped members (311-314) capable of rotating at two or more and five or less different radial positions.

The utility model discloses an anti-wrinkle fabric which comprises rectangular areas and rhombic areas, each rhombic area comprises rhombic edges and rhombic interiors, the rectangular areas are alternately arranged in the length direction of the fabric, every two adjacent rhombic edges are symmetrically arranged in the breadth direction of the fabric, the four corners of each rectangular area are connected with the rhombic edges respectively with the rectangular areas as the center, and the rhombic edges are arranged in an X shape. The rhombus interior is located in the rectangular area and the rhombus edge. The rhombus, the rectangle and the protruding rhombus edges are formed by interweaving the warp yarn and the weft yarn respectively, stress can be effectively dispersed through rhombus arrangement, so that wrinkles of the fabric are reduced, the rhombus has good contractibility, elasticity and rebound resilience of the fabric are improved, protrusions of the rhombus edges are increased, and the fabric is comfortable to wear. The deformation speed of the rhombus is relieved by adding the convex points to disperse stress on the edge of the rhombus, and meanwhile, the rectangles are added to the four corners of the rhombus, so that the diagonal structure of the rhombus can provide additional elastic support, and meanwhile, the structural stability is improved.

The invention belongs to the field of data processing, and provides a test path scheduling control method, system and equipment for a ladder with a multi-working-condition structure, a directional loading force distribution peak is calculated according to loading force in each direction, and a directional deformation distribution peak is calculated according to deformation in each direction; calculating a direction deformation speed distribution peak according to the deformation speed in each direction; respectively generating force deformation image limit values in all directions according to the direction loading force distribution peak, the direction deformation amount distribution peak and the direction deformation speed distribution peak in all directions, and processing the force deformation image limit values in all directions to obtain force shape normalization intensity in all directions; and determining the test frequency of each direction by using the force shape normalized intensity of each direction, and determining the test sequence of each direction by using the force shape normalized limit value of each direction, thereby optimizing the test path and test resource allocation of the ladder with the multi-working-condition structure.

The application is a large-size titanium alloy bar-shaped special-shaped cross-section forging streamline control method, which is mainly used for solving the problems of low matching degree of the streamline of the large-size special-shaped cross-section forging and the performance requirement of the forging and poor uniformity of the organization and performance, and further increasing the service life of the part. The streamline control method is based on the titanium alloy bar, and by controlling the parameters such as the bar blank preparation, the blank forming, the deformation amount, the deformation speed and the deformation temperature in the die forging process, the best matching of the streamline of the forging and the performance of the forging is realized, and the service life of the part is improved.

The application provides a dam visual monitoring method and system based on three-dimensional deformation field reconstruction, comprising: acquiring a line-of-sight observation value of an earth observation device for a monitoring point; decomposing the line-of-sight observation value to obtain a three-dimensional deformation component of the monitoring point; establishing a spatial deformation field of the monitoring point within a preset range around the monitoring point; acquiring a spatial deformation variable sequence of the monitoring point based on the spatial deformation field; determining a deformation velocity field and a deformation acceleration field of the monitoring point according to the spatial deformation variable sequence and a least square fitting algorithm; constructing a dynamic three-dimensional deformation field of the monitoring point according to the three-dimensional deformation component, the spatial deformation field, the deformation velocity field and the deformation acceleration field; rendering the dynamic three-dimensional deformation field based on a hierarchical detail control algorithm and an adaptive grid generation algorithm, and superimposing the dynamic three-dimensional deformation field into an initial dam model to obtain a target dam model. The application can realize multi-dimensional capture, dynamic trend description and intuitive visual monitoring of dam deformation.

To provide a method for accurately estimating the wear of a tire during driving, independent of its wear pattern, the wear is estimated using an index of deformation rate at or near the tire contact patch, a contact time ratio, and deflection. The deformation rate index is calculated based on the magnitude of either or both of the positive and negative peaks in the radial acceleration waveform obtained by differentiating the time-series waveform of the tire's radial acceleration detected by an accelerometer mounted on the tire. The contact time ratio is the ratio of the contact time (the time interval between the positive and negative peaks) to the tire's rotation time (the time interval between either the positive or negative peaks). The deflection is the difference between the tire radius (the radius of the tire when unloaded) and the effective radius (the radius of the tire when in motion).

The invention relates to the technical field of surrounding rock deformation monitoring, in particular to a surrounding rock deformation continuous monitoring method and device applied to the drilling process, and the method comprises the steps: determining a target monitoring point from all monitoring points based on the abnormal condition of the deformation speed detected by all the monitoring points in a drilling hole at the same moment; according to the number of the target monitoring points at each moment and the correlation between the detected deformation speeds of the target monitoring points, determining the deformation abnormity synchronism of all the target monitoring points at each moment, and combining the abnormal condition of the detected deformation speed of each monitoring point at each moment. The influence degree of the drilling machine vibration on the surrounding rock deformation amount of each monitoring point at each moment is obtained, so that the deformation speed is reversely adjusted and detected, the updated surrounding rock deformation speed after the vibration influence is eliminated is obtained, and the accuracy and reliability of obtaining the surrounding rock deformation speed are improved. The accuracy and reliability of continuous monitoring of surrounding rock deformation can be improved.

A kind of manufacturing method for improving the strength of titanium alloy welded joint weld, titanium alloy welded joint after vacuum annealing treatment is heated to 900-1100 DEG C, constant temperature compression deformation is carried out, compression deformation amount is 20-50%, and deformation speed is 0.01-0.02mm / s;The titanium alloy welded joint is the titanium alloy plate material welded well;The obtained material is cooled to 500-550 DEG C, constant temperature compression deformation is carried out again, compression deformation amount is 3-5%, and deformation speed is 0.01-0.02mm / s, then air cooling to room temperature, then in turn carry out solution treatment and aging treatment.The present application can improve the uniformity of welded joint structure and mechanical properties, and enhance its service stability.

The present application relates to the technical field of surrounding rock deformation monitoring, and particularly relates to a surrounding rock deformation continuous monitoring method and device applied to a drilling process, target monitoring points are determined from each monitoring point based on abnormal conditions of detection deformation speeds of each monitoring point in the drilling process at the same time; the number of target monitoring points at each time and the correlation between the detection deformation speeds of the target monitoring points are used to determine deformation abnormal synchronism of all target monitoring points at each time, the abnormal conditions of the detection deformation speeds of each monitoring point at each time are combined to obtain the influence degree of drilling rig vibration on the surrounding rock deformation amount of each monitoring point at each time, the detection deformation speed is adjusted reversely to obtain an updated surrounding rock deformation speed after the influence of vibration is eliminated, and the accuracy and reliability of the surrounding rock deformation speed acquisition are improved, and the accuracy and reliability of the surrounding rock deformation continuous monitoring are improved when the surrounding rock deformation continuous monitoring is performed.

The application discloses a simulation method for vibration control response of a rotating MFC laminated plate, performs unit discretization on a flexible plate and an MFC plate, adopts an absolute node coordinate method to describe the motion and deformation of the flexible plate and the MFC plate, obtains a coordinate conversion matrix between the flexible plate unit and the upper MFC plate unit in combination with a laminated plate unit modeling method, calculates the generalized elastic force and the stiffness matrix of the flexible plate unit from the elastic potential energy of the flexible plate unit, introduces a constitutive equation of the MFC to describe the force-electricity coupling characteristics of the MFC, determines the generalized elastic force matrix, the generalized stiffness matrix and the generalized piezoelectric force matrix of the MFC plate unit, obtains the control voltage parameters according to a PD control strategy, determines the unit mass matrix, the stiffness matrix and the external force matrix of the MFC laminated plate unit, assembles the MFC laminated plate unit, obtains the dynamic equation of the rotating MFC laminated plate, and obtains the deformation and the velocity of the rotating MFC laminated plate based on the absolute node coordinate method. α Method solves the absolute node coordinate of the MFC laminated plate, and obtains the deformation and the velocity of the rotating MFC laminated plate.

The application belongs to the field of data processing, and provides a test path scheduling control method, system and equipment for a multi-working-condition structure ladder, to calculate a direction loading force distribution peak from each direction loading force, to calculate a direction deformation amount distribution peak from each direction deformation amount, and to calculate a direction deformation speed distribution peak from each direction deformation speed; to generate a force deformation quadrant value of each direction from the direction loading force distribution peak, the direction deformation amount distribution peak and the direction deformation speed distribution peak of each direction, to process the force deformation quadrant value of all directions to obtain a force shape normalized intensity of each direction; to use the force shape normalized intensity of each direction to determine a test frequency of each direction, and to use the force deformation quadrant value of each direction to determine a test sequence of each direction, so as to optimize the test path and test resource allocation of the multi-working-condition structure ladder.

The invention relates to the technical field of gear modeling, and discloses a system dynamics modeling method and system for a meshless flexible gear pair, and the method comprises the steps: constructing a flexible gear rotor system coordinate system, calculating a displacement vector of any point of a gear when the system moves, carrying out the time derivation of the displacement vector, and obtaining a deformation velocity vector; calculating the total kinetic energy of the gear rotor system based on the deformation velocity vector; calculating positive strain and shear strain potential energy of the small and large gears according to the displacement vector, obtaining matrix boundary condition potential energy by combining the matrix rigidity, calculating gear tooth meshing elastic potential energy according to the meshing rigidity and the relative position vector, and summing various types of potential energy to obtain total potential energy of the system. Finally, the total kinetic energy and the potential energy are substituted into the analysis mechanics principle, a system dynamics partial differential control equation set is deduced through variational operation, and meshless flexible gear pair system dynamics modeling is completed. According to the method, the problems of traditional finite element grid division and large-scale calculation are avoided, and the modeling efficiency and the complex working condition adaptability are improved.

The application discloses an anti-fatigue aluminum alloy wire and a preparation method thereof. The anti-fatigue aluminum alloy wire comprises the following components in percentage by mass: Mg: 0.27-0.45%, Si: 0.27-0.5%, Fe: 0.1-0.15%, Y: 0.1-0.3%, La: 0.01-0.05%, B: 0.001-0.05%, and the balance of Al. The components further comprise inevitable other impurity elements, the content of each of the inevitable impurity elements is less than or equal to 0.005%, and the total content of the inevitable other impurity elements is less than or equal to 0.02%. The anti-fatigue aluminum alloy wire can realize grain refinement and grain boundary strengthening of the material, improve the anti-fatigue performance of the material, and improve the grain boundary structure and mechanical properties of the material by controlling parameters such as deformation temperature, deformation speed and deformation ratio of extrusion and drawing. The anti-fatigue performance of the prepared aluminum alloy wire is improved by 20-50% compared to the existing top level in the industry, and the aluminum alloy wire is the only product in China that has passed 3000 million times of fatigue examination and verification under the condition of extreme running tension.

A high-dynamic deformation measurement method based on a rotating synthetic aperture radar comprises the following steps: step 1, establishing a coordinate system, rotating the radar and collecting echoes; 2, calculating a time-varying phase error, and substituting the time-varying phase error into the echo for compensation; 3, determining an optimal deformation speed and a reference pixel value; 4, segmenting and repeatedly executing the steps 2 to 3 to obtain subsequent pixel values; step 5, calculating deformation quantity by using pixel value interference; step 6, updating the phase displacement; 7, calculating relative displacement; and step 8, accumulating to obtain absolute displacement. According to the method, phase ambiguity introduced by high-speed deformation is effectively eliminated through iterative search of a speed compensation item, and it is guaranteed that a high-precision measurement result is achieved in a high-dynamic deformation scene; and meanwhile, the real-time analysis of continuously acquired data is realized through a dynamic data segmentation updating strategy, and the data processing efficiency and the data rate of a measurement result are improved.