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71 results about "Section analysis" patented technology

Complete machine level product storage life acceleration test method

ActiveCN108333208AAccelerated storage life test is effectiveAccelerated test is validMaterial thermal analysisAcceleration factorSection analysis
The invention discloses a complete machine level product storage life acceleration test method. The method comprises steps as follows: sensitive environment factors related to the storage life are acquired according to cross-section analysis; the environment loading spectrum is analyzed and acquired with a corresponding data processing method and spectrum compiling theories; storage failure information related to a complete machine product storage failure mode and a failure mechanism is acquired, and storage life weak components of a complete machine product are determined according to the storage failure information; acceleration tests are performed on different weak parts, corresponding life distribution models, acceleration models and related parameters of the weak components are determined; a complete machine storage life model based on competing failure and an acceleration factor evaluation model of the complete machine storage life model are constructed according to analysis andcorresponding test results of the weak components; complete machine storage life acceleration verification tests are performed according to acceleration factors. By means of the complete machine levelproduct storage life acceleration test method, effective acceleration storage tests can be performed on the complete machine product, and the accurate life analysis result of the complete machine product is obtained.
Owner:CASIC DEFENSE TECH RES & TEST CENT

System for monitoring complicated oil deposit flooding conditions

The invention discloses a system for monitoring complicated oil deposit flooding conditions, comprising an input unit, a multi-level processing unit and a display unit, wherein the input unit is used for inputting well point geologic parameters; the multi-level processing unit is used for building hidden geologic characteristic parameters according to the well point geologic parameters input by the input unit, finishing multi-layer, multi-well, multi-phase and multi-driving power energy balance analysis and calculation of a block, further building an injecting and extracting correspondence relationship among wells and carrying out comprehensive inversion treatment on the layered and partitioned flooding conditions by using improper functions to obtain distribution data of various sucking sections and layered flooding conditions of the block and a single well in different periods; and the display unit is used for displaying the injecting and extracting correspondence relationship amongwells, built by the multi-level processing unit, and the obtained diagram result data of the distribution of the various sucking sections and the layered flooding conditions of the block and the single well in different periods. The system can obtain accurate layered flooding condition data and different levels of section analyzed result data, improve the extracting precision, and save the manpower and material resources.
Owner:CHINA NAT OFFSHORE OIL CORP +1

Urban road intersection holographic three-dimensional dynamic analysis method

InactiveCN103456169AEvaluate space-time utilizationEvaluate operational efficiencyDetection of traffic movementModel dynamicsThree-dimensional space
The invention provides an urban road intersection holographic three-dimensional dynamic analysis method which comprises the following steps that (1) a three-dimensional space-time track of motor vehicles at an intersection is drawn utilizing time and space coordinates of the motor vehicles; (2) section analysis is carried out on the three-dimensional space-time track of the motor vehicles; (3) a space-time utilization rate model of the intersection is built according to a section analysis result, and operation efficiency of the intersection is analyzed according to the motor vehicle space-time utilization rate. According to the model dynamic analysis method, the concept of the motor vehicle three-dimensional space-time track is introduced, the urban road intersection motor vehicle three-dimensional space-time track is drawn from the aspect of the motor vehicle space-time resource occupation state, the motor vehicle three-dimensional space-time track can be used for displaying and analyzing the motor vehicle operation state within the whole intersection range at the same time, and therefore the urban road intersection holographic three-dimensional dynamic analysis model is built to evaluate the motor vehicle space-time utilization rate and the operation efficiency of intersections.
Owner:TONGJI UNIV

Resonant magnetic induction bioelectrical impedance tomography method and equipment adopted by same

The invention belongs to the field of bioelectrical impedance tomography, and particularly relates to a resonant magnetic induction bioelectrical impedance measuring method and equipment matched the same. The method adopts a multi-channel resonance signal for detection, and comprises the following steps: (1) placing a detected object in a resonance magnetic field; (2) detecting a disturbed magnetic field produced by the detected object; and (3) performing non-linear data processing and image reconstruction. The equipment comprises an excitation part, a detected object bearing platform (1) and a detection part; the excitation part comprises an excitation source and an excitation coil (2); the output end of the excitation source is connected with the input end of the excitation coil (2); the detection part comprises a detection coil (3) and a signal processing module; the excitation coil (2) of the excitation part and the detection coil (3) of the detection part are placed on the detected object bearing platform (1); and the output end of the detection coil (3) is connected with the input end of the signal processing module. The equipment has high sensitivity and ideal imaging effect, and can be used for bioelectrical impedance section analysis and imaging analysis.
Owner:SHENYANG POLYTECHNIC UNIV

Underground pipeline repairing assisting method, device and system

ActiveCN105387274APrevent blind excavation phenomenonReduce accidents such as digging pipelinesPipe laying and repairSection analysisEngineering
The embodiment of the invention discloses an underground pipeline repairing assisting method, device and system. A CORS (Continuously Operating Reference Stations) positioning system is utilized for positioning an area to be constructed accurately, and underground pipeline information is browsed and checked through a mobile terminal, so that two-dimensional and three-dimensional multi-scale checking is achieved, and multiple underground pipe network analysis functions such as buffer analysis, three-dimensional excavation analysis, cross section analysis and vertical section analysis are achieved to assist in mastering the information about distribution, embedment and the like of underground pipelines; and meanwhile, the mobile terminal can be in communication with an underground pipeline information management terminal, the underground pipeline information is checked and preliminary construction judgment is performed through the underground pipeline information management terminal, the repairing construction process of the underground pipelines is simulated, the construction damage evaluation is conducted, the influence of construction on the nearby underground pipelines is evaluated, protective decision information is generated, sent to the mobile terminal of constructors and used for guiding the on-site repairing construction, unchecked excavation is prevented effectively, and accidents such as surface collapse and pipeline break-off caused by unscientific excavation are reduced.
Owner:HUNAN DALU TECH CO LTD

Method for evaluating influence of tight reservoir micro-pore structure features on effects of displacement of oil by water

The invention provides a method for evaluating the influence of tight reservoir micro-pore structure features on the effects of displacement of oil by water. The method comprises the following steps:1) establishing a tight reservoir micro-pore structure classification standard; 2) making micro models based on classified tight reservoirs; 3) performing an experiment of displacement of oil by wateron each micro model; 4) obtaining the effects of displacement of oil by water corresponding to different types of reservoirs. According to the method provided by the invention, a movable fluid parameter of a tight reservoir sample is measured by using the nuclear magnetic resonance technology, and the micro-pore structure of a tight sandstone reservoir is studied in combination with casting bodythin section analysis, scanning electron microscope, high pressure mercury injection and other experimental results, a micro-pore structure classification standard of the target reservoirs is established, the experiment of displacement of oil by water is performed on three types, and the relationship between the micro-pore structure features and the oil displacement efficiency has important guiding significance for the formulation and adjustment of development programs of the tight reservoirs.
Owner:XI'AN PETROLEUM UNIVERSITY

Large power borehole pump double-side helical gear engagement transmission system bearing analysis method

The invention discloses a large power borehole pump double-side helical gear engagement transmission system bearing analysis method, and relates to the machinery engineering technical field; the method comprises the following 6 steps: a crank link mechanism movement relation; crankshaft connecting rod system bearing analysis; transmission shaft system bearing analysis; crankshaft and transmission shaft sudden changed section analysis; calculating program drafting fitting curve compiling; calculating result analysis. Large power borehole pump double-side helical gear engagement transmission system original parameters are obtained so as to provide the large power borehole pump double-side helical gear engagement transmission system bearing analysis method; the method can obtain each active force change curve along with crankshaft angles in the large power borehole pump double-side helical gear engagement transmission system, and can obtain calculating safety factor change curves along with crankshaft angles on the crankshaft and transmission shaft various sudden changed sections, thus providing certain reference values for design and optimization of parts in the large power borehole pump double-side helical gear engagement transmission system.
Owner:ANHUI UNIV OF SCI & TECH

A method for segmenting point cloud data of a shield tunnel surface

A method for segmenting point cloud data of a shield tunnel surface includes such step of projecting the point cloud of a shield tunnel, and converting three-dimensional point cloud to two-dimensionalpoint cloud according to the direction of the point cloud of shield tunnel; 2) extracting the boundary point, gridding the projected two-dimensional point cloud, and extracting the upper and lower boundary points of the point cloud by using the grid; 3) calculating the segmentation position of the tunnel point cloud, comprising a) calculation of tangent slope of extracted boundary point; and (b)subparagraph position calculation; 4) processing that segment positions of the shield tunnel point cloud on the two projection plane jointly to complete the segmentation of the whole tunnel point cloud data, so as to prepare for the modeling of the tunnel point cloud. The present invention has the advantages that 1) the segmentation method of point cloud on the surface of shield tunnels is studied, which provides technical support for the extraction of the central axis of shield tunnels based on TLS technology, section analysis and other point cloud processing methods. 2) the method can effectively improve the accuracy of the axis fitting and supplement the deformation monitoring technology of shield tunnels, and has the important practical value in the safety monitoring of shield tunnelsand the prevention of major accidents.
Owner:NANJING FORESTRY UNIV

Three-dimensional geological model building method of high-steep structure

ActiveCN107515423AHigh precisionStructural trap implementationSeismic signal processingLithologyStructural deformation
The invention discloses a three-dimensional geological model building method of a high-steep structure, and belongs to the field of geological engineering. The method includes the steps: acquiring ground surface inclination information and formation lithology information of a target work area, and sectionally building a plurality of ground surface geological models according to geological change; building a three-dimensional ground surface model by the aid of the ground surface geological models; performing well logging in the target work area and acquiring underground inclination information and underground layering information for building a near-well structure model; analyzing a seismic reflection profile of the target work area and describing a detachment structure system in the target work area; building a two-dimensional fundamental geological model by the aid of the three-dimensional ground surface model, the near-well structure model and the detachment structure system; building a three-dimensional geological model according to the two-dimensional fundamental geological model. The three-dimensional geological model building method effectively solves the problem of poor seismic reflection imaging of the high-steep structure due to steep angle formation development and structural deformation complexity, high precision of the three-dimensional geological model for the high-steep structure is ensured, and structural trap is more practicable.
Owner:PETROCHINA CO LTD

Method for designing car front longitudinal beam with hat section

The invention, for the deficiencies in existing car front longitudinal beam design, proposes a method for designing a car front longitudinal beam with a hat section, and aims to realize controllable design of a front collision deformation mode of a front longitudinal beam with a section analysis and calculation method in an overall deformation mode of a planned longitudinal beam. The design method comprises the following steps: A, planning an overall deformation mode of the front longitudinal beam in a front collision condition: dividing the front longitudinal beam into a front telescopic crushing section, a middle Y-direction bent section, a rear micro-deformation supporting section and a rear stable extension section in sequence from front to rear; B, deriving an average crushing counterforce expression of the front longitudinal beam with the hat section; C, according to the requirements of the sections of the front longitudinal beam, designing the sections of the front longitudinal beam in sequence from front to rear; and D, according to a design result in the step C, performing simulation analysis by utilizing a computer, and according to a simulation result, confirming or modifying the design. The design thought of the method has very high practicality, so that the method also can be applied to the design of other car parts.
Owner:CHERY AUTOMOBILE CO LTD

Ultra-precise cutting knife selection method

The invention belongs to the technical field of ultraprecision machining and complex part manufacturing and relates to a method for selecting ultraprecision turning tools. The method comprises the following procedures: a plurality of sectional curves for a machined surface are selected with rotating section analysis or according to the geometry of the machined surface; the solution is found, and with the sector of sectional curve method, the minimum blade arc radian value for machining each curve is solved; the depressed regions of each curve are searched and the solution for radii of the depressed regions is conducted with the method of circle fitting to obtain the maximum blade arc radius value of each curve; the minimum blade arc radian value and the maximum blade arc radius value of each sectional curve are compared, and the blade arc radian of a turning tool to be selected is confirmed according to the largest minimum blade arc radian value and the blade arc radius of the turning tool to be selected is confirmed according to the lowest maximum blade arc radius value; the turning tool is selected. The turning tool selecting method provided by the invention can reduce or avoid the problem of machining interference brought by improper turning tool selection.
Owner:TIANJIN UNIV

Trapezoidal straight corrugated plate production method

InactiveCN107944177AImprove the efficiency of performance computingReduce total degrees of freedomGeometric CADDesign optimisation/simulationElement modelCoupling
A trapezoidal straight corrugated plate production method includes: dividing a trapezoidal straight corrugated plate into a plurality of calculation units; establishing a strain energy equation of thecalculation units; solving a periodic function of the calculation units; on the basis of the periodic function of the calculation units, calculating equivalent plate tensile rigidity, equivalent plate bending rigidity and equivalent plate stretch bending coupling of the calculation units; by analysis software, calculating tensile rigidity, stretch bending rigidity and tensile coupling of the trapezoidal straight corrugated plate on the basis of the equivalent plate tensile rigidity, equivalent plate bending rigidity and equivalent plate stretch bending coupling of the calculation units. By replacement of the trapezoidal straight corrugated plate with a flat plate in corresponding equivalent rigidity, unit amount and the total degrees of freedom of finite element models in global analysisare sharply decreased, and equivalent rigidity is obtained through section analysis of the trapezoidal straight corrugated plate. By finite element analysis or closed analytical solution for calculating integral performances of the trapezoidal straight corrugated plate, efficiency in performance calculation of the trapezoidal straight corrugated plate is remarkably improved, and accordingly trapezoidal straight corrugated plate production efficiency is improved.
Owner:CHONGQING UNIV

Method and device for detecting high-grade mountain sand concrete for inner steel pipe column

The invention discloses a method and a device for detecting high-grade mountain sand concrete for an inner steel pipe column. The device comprises three sounding pipes vertically arranged in the steelpipe column; the three sounding pipes are respectively positioned at the three included angles of an equilateral triangle, the lower end of each sounding pipe is at the bottom of the steel pipe column, the upper end of each sounding pipe is higher than the steel pipe column, and two transducers are arranged in the two of the sounding pipes; the two transducers are respectively connected with twoinput ports of a foundation pile cross-hole ultrasonic automatic measuring instrument by means of two data lines, and a data output port of the foundation pile cross-hole ultrasonic automatic measuring instrument is connected with an input port of a non-metal ultrasonic detecting analyzer. A knocking analysis method and an acoustic wave cross-section analysis method are adopted to perform 100% non-destructive test on the high-grade mountain sand concrete of the inner steel pipe column, a long rod core sampling analysis method is used for the re-testing the suspected areas so as to accurately determine the suspected positions, and the long rod core sampling analysis method is used for re-inspection of the suspected positions; drilled holes are repaired after the re-inspection is finished, so that the structural damage is reduced.
Owner:CHINA CONSTR 4TH ENG BUREAU 6TH

Binocular vision area target depth information extraction and cross section analysis system and method

InactiveCN104656683AMeet the pose prediction function of real-time walkingEasy to operateControl using feedbackGyroscopeSection analysis
The invention discloses a binocular vision area target depth information extraction and cross section analysis system and method. The system comprises a left bracket, a right bracket, a first driver, a second driver, a third driver, a fourth driver, a fifth driver, a control panel, a first step motor, a second step motor, a third step motor, a fourth step motor, a fifth step motor, a rotating plate, a first transmission gear set, a second transmission gear set, a third transmission gear set, a left rotating shaft, a right rotating shaft, a main shaft electronic compass, a left electronic compass, a right electronic compass, a left camera bracket, a right camera bracket, a left camera, a right camera, a left electronic gyroscope, a right electronic gyroscope, a bracket plate, a bracket plate, a main shaft and a bottom plate, wherein the third transmission gear set consists of a first gear and a second gear; the first transmission gear set consists of a third gear and a fourth gear; the second transmission gear set consists of a fifth gear and a sixth gear. The binocular vision area target depth information extraction and cross section analysis system and method can be used for obtaining the cross section information on preset tracks in areas to be detected.
Owner:XI AN JIAOTONG UNIV
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