59 results about "Strength factor" patented technology

An apparatus, system, and method are disclosed for automated digital media content filtration based on relationship monitoring. The method determines a plurality of user relationships based at least in part on an online association between a user and a content producer. The method monitors each user relationship with each content producer for a relationship interaction between the user and the content producer. Furthermore, the method also identifies digital media content published by a content producer having a relationship with the user. A determined relevancy may be based on a strength factor derived at least in part on monitored relationship interactions between the user and the content producer that published the digital media content. The digital media content is presented to the user, with that having a greater relevancy weight having a higher priority than other digital media content available to the user from other content producers.

The present invention provides a multiaxial short crack propagation life prediction method based on a critical surface method, and relates to the field of multiaxial fatigue strength theory. The algorithm comprises the steps of: (1) selecting a plane, which contains the maximum shearing strain range, as a critical surface, and using the damage parameters on the critical surface to characterize a short crack propagation driving force; (2) based on the shear-type multiaxial fatigue damage parameters, establishing an equivalent crack stress intensity factor applicable to the multiaxial stress state; (3) fitting the short crack propagation rate data under uniaxial loading to obtain an uniaxial short crack propagation curve; and (4) carrying out plastic zone size correction on the crack tip, and calculating the short crack propagation life by a fracture mechanics method. The method can well descript the influence of non-proportional loading on crack propagation. The results show that the method can well predict the short crack propagation life under multiaxial proportional and non-proportional loading.

The invention belongs to the technical field of the network security, and especially relates to a network active defense policy selection method and device based on Bayesian evolutionary game. The method comprises the following steps: constructing a network attack Bayesian evolutionary game model according to an incomplete information game scene in an actual attack-defense adversarial network; setting a selection strength factor for describing gamer learning capacity, and constructing a random replicate dynamic equation about the attacker-defender policy evolution; combining the random replicate dynamic equations about the attacker-defender policy evolution, solving to acquire a stable balance point of the attacker-defender policy evolution, and determining and outputting an optimal defense policy. From the limited intellectual visual angle of the participant, a replicate dynamic equation about the participant decision process is constructed and solved by means of the replicate dynamicmechanism for describing the biological evolution, the method is suitable for incomplete information network attack-defense adversarial network and more suitable for the actual application, the generality and operability in the network decision implementation process are enhanced, and the effective guidance is provided for selecting the active defense policy.

The invention relates to a spot-weld fatigue life predicting method. The spot-weld fatigue life predicting method includes steps of 1, modeling a full vehicle and establishing a modularized spot-weld finite element model; 2, deducing spot-weld fatigue life evaluation parameter, mean stress strength factor; 3, subjecting spot-welded joints of different materials to systematic fatigue test, and subjecting the mean stress strength factor and fatigue test data of the spot-welded joints of different materials to regression analysis to obtain a curve of the spot-welded joints of different materials. The spot-weld fatigue life predicting method adopts the modularized spot-weld model to predict the spot-weld fatigue life, in actual application, only nodes of a border unit of the modularized spot-weld model are superposed with nodes of a welding structure unit, and spot-weld modeling efficiency in the full-vehicle modeling is improved.

One embodiment of the present invention sets forth a technique for zippering meshes of primitives. The technique involves identifying a first vertex associated with a first mesh boundary and having a first position and identifying a second vertex that is proximate to the first vertex and associated with a second mesh boundary, where the second vertex has a second position. The technique further involves determining a third position based on the first position, the second position, and a zippering strength factor, where the third position is located in a region between the first position and the second position. Filially, the technique involves moving the first vertex to the third position.

The present invention discloses a nondestructive testing method for metal material fracture toughness, and the method mainly includes: performing Charpy impact tests to samples of different damage degrees to obtain the brittle transition temperatures of the samples; performing ultrasonic secondary harmonic measurement to the samples of each type of the damage degrees to obtain the second harmonic ultrasound nonlinearity parameter normalized value of the samples of the type of the damage degree; obtaining the fracture strength factor of the samples of each type of the damage degrees via the fracture toughness tests or by reference of fracture empirical formulas, and making a calibration curve for nondestructive testing fracture toughness; performing ultrasonic secondary harmonic measurement to a metal material under test to obtain the second harmonic ultrasound nonlinearity parameter normalized value of the metal material under test; and obtaining the fracture toughness value of the metal material under test by using the calibration curve. The nondestructive testing method for metal material fracture toughness of the invention is capable of performing testing and evaluation of material fracture toughness of in-service metallic components, and providing a reliable basis for the security service of the metal materials.

The invention discloses a preprocessing method for a lignocellulose raw material, which comprises the following steps: (1) fully mixing the crashed lignocellulose raw material with water, and then standing for 2-4 hours, and transferring a mixture into a high-pressure reactor; heating the high-pressure reactor from room temperature to 180-240 DEG C under the protection of inert gases, and then immediately and quickly cooling the reactor to the room temperature through condensate water, wherein the strength factor is 2.40-4.17 and the pressure is a saturated vapor pressure at 1.19-3.45MPa at corresponding temperature; and (2) performing solid-liquid separation on the product obtained in the step (1), thereby obtaining a solid-phase product and a liquid-phase product. The preprocessing method for the lignocellulose raw material has the advantages of low cost, no pollution to environment, low energy consumption, high hydrolysis rate of hemicellulose, high recovery rate, and the like.

The invention provides an information auditing method, an information auditing device, a computer-readable medium and electronic equipment. The information auditing method comprises the steps of acquiring an auditing strength factor set by a user; acquiring at least one piece of picture information from stored picture information, wherein the similarity coefficient of the picture information and a template picture is greater than or equal to the auditing strength factor; comparing information of a picture to be audited with the at least one piece of picture information; if the comparison result of the information of the picture to be audited and any picture information meets the auditing strength factor, determining that the picture to be audited passes the audit. After the technical scheme is adopted, the picture can be automatically audited, and the problems of slow audit speed and uncontrollable audit results which are caused by a manual audit way can be solved.

The invention relates to the field of heterogeneous steel welding, in particular to a vacuum electron beam welding method for single-phase austenitic stainless steel (HR-2) and precipitation strengthening austenitic stainless steel (J75) heterogeneous plates (which have the thickness of between 2.0 and 5.0 millimeters). According to the vacuum electron beam welding method for the HR-2 and J75 stainless steel heterogeneous plates, a process comprises the following steps of: performing pre-welding treatment on parent metals, clamping and fixing in a vacuum welding chamber, vacuumizing the welding chamber, welding in a positioning mode, welding by using electron beams in a single circulation mode (the electron beams scan in a deflection mode) and scanning weld joints by using the electron beams in a defocusing mode after welding. According to HR-2 and J75 heterogeneous metal joints, the defects of pores, entrainment and the like are overcome in the joints, and poor gama' areas are not formed in a welding molten pool and a heat affected zone on one side of J75 alloy. The joints of the HR-2 and J75 stainless steel heterogeneous plates welded by the method have good formed surfaces, the strength of the joints is higher than 680 to 700 MPa, and the strength factor of the HR-2 stainless steel can reach over 0.9.

The invention discloses a method for determining cell adjacent relation. The method includes: obtaining information of a cell and a cell to be judged; determining distance factor of the cell to be judged according to the information the cell and the cell to be judged; determining topology strength factor of the cell to be judged according to the information the cell and the cell to be judged; determining adjacent relation factor of the cell to be judged according to the distance factor and the topology strength factor; and determining adjacent relation of the cell to be judged and the cell according to the adjacent relation factor. The method and a device can determine the adjacent relation between the cells accurately.

The invention discloses a testing method for the dynamic crack arrest toughness of an I-type crack under the impact load, and belongs to the technical field of geotechnical engineering. The method includes the steps of conducting impact test research through a large-diameter separated type Hopkinson pressing rod and a test configuration designed by an inventor, determining the dynamic crack toughness of a sample through an experiment-numerical value method, calculating the load borne by the sample and the moment of crack arrest through strain signals obtained through a test, inputting an obtained time travel curve to a finite element program Ansys, calculating the near-field displacement of a crack tip through a 1/4 node unit, obtaining the time travel curve of the I-type dynamic rupture stress strength factor of the sample through a displacement extrapolation method, obtaining the strain strength factor value corresponding to the crack arrest moment as the dynamic crack arrest toughness of the material, and then obtaining the pure I-type crack dynamic crack arrest toughness under the effect of the impact load. The method is simple and convenient to operate and should have more practical application meaning in research of the dynamic crack arrest characteristic of rock under the impact dynamic load.

The invention belongs to a metal material damage tolerance design technology and relates to a metal material fatigue crack propagation prediction method. The fatigue crack propagation prediction method comprises the following steps of determining residual stress strain field distribution near a crack tip in crack propagation; calculating a residual stress strength factor; determining a processing method for variable amplitude loading; and building a fatigue crack propagation model. According to the metal material fatigue crack propagation prediction method provided by the invention, the fatigue crack propagation prediction precision is improved; the application range is expanded; and the needs of modern airplane structure design are met.

The invention discloses a part service life prediction method comprehensively considering fatigue strength influence factors, and relates to the field of fatigue strength design, and the method comprises the following steps: (1) carrying out static analysis on a part structure by utilizing a finite element method, and determining a key dangerous point position with weak strength; (2) simulating acyclic load borne by the part, and obtaining a stress response process at a dangerous point; (3) calculating stress amplitude and average stress as damage parameters; (4) carrying out average stress correction by utilizing a Goodman equation; (5) determining a comprehensive fatigue strength factor; (6) predicting the fatigue life of the part; and (7) accumulating the fatigue damage of the materialby utilizing a Miner theorem, and when the fatigue damage of the material reaches 1, enabling the parts to fail. According to the method, the comprehensive fatigue strength factor is utilized to comprehensively consider the influence of the size and the surface state on the fatigue strength, the huge test amount for determining the size coefficient and the surface state coefficient can be avoided, and the design cost is reduced.

The present invention relates to a leak before burst (LBB) analysis method based on a failure assessment diagram (FAD). The method comprises the following steps: (a) service state analysis; (b) initial crack selection; (c) load analysis; (d) line elastic stress intensity factor (SIF) calculation; (e) ultimate load analysis; (f) evaluation point coordinate calculation; (g) FAD selection; (h) evaluation point drawing; (i) elastoplastic SIF calculation; (j) J-integral calculation; (k) calculation and fitting of the J-integral of different cracks; (l) calculation of the structural failure criticalcrack size; (m) calculation of the structural critical leakage crack size; and (n) LBB criterion evaluation. According to the method provided by the present invention, based on the FAD theory, defects that the theoretical basis of elastoplastic analysis in the existing norms is insufficient, the existing J-integral calculation manual has a limited application scope, the finite element modeling analysis process is complicated, and the processes for calculating the structural failure critical crack size and the structural critical leakage crack size are complicated, and the like are overcome, and a FAD-based LBB analysis basis is provided.

The invention discloses a simulation part load conversion method based on local actually measured strain at a crack tip of an actual structural part of an airplane and relates to the field of fatiguelife test. The method comprises the following steps: (1) measuring crack length and adhering a strain gauge; (2) converting the measured strain into local strain; (3) calculating a strain strength factor by employing the local strain; (4) calculating nominal strain through the strain strength factor and judging whether a calculating result is accurate or not; and (5) solving a load of the test simulation part by employing the calculated nominal strain. The conversion result shows that the method can convert the load of the actual structural part with the crack into the load of the test simulation part accurately and quickly.

The invention relates to a method for determining safety of a GIL shell containing buried defects, comprising the following steps: acquiring material characteristic data of a gas insulated metal enclosed transmission line GIL shell; acquiring design condition data of the GIL shell, and calculating stress data of the GIL shell; performing non-destructive testing on the GIL shell to determine existing buried defects and defect data of the buried defects; equalizing the existing buried defects to surface defects respectively, determining defect data of the surface effects according to the defectdata of the buried defects, and judging whether to combine the defects of the adjacent surface defects according to a merge strategy when there are multiple buried defects; and calculating defect stress intensity factor of each buried defect, and determining safety of the GIL shell according to the defect stress intensity factor. The accuracy of evaluation of safety and remaining life of the GIL shell containing the buried defects can be improved. The method is convenient for practical application of engineering personnel. The maintenance cost is lowered, and the technical support is providedfor the inspection and maintenance of the extra-high voltage GIL shell.

Methods and apparatus are provided for adjusting a forward-link power-control step size. An initial active set of coverage areas for a mobile station is maintained within which a first coverage area in the initial active set has a signal strength that is stronger than that of each of the other coverage areas in the initial active set. The first coverage area is determined to have dropped from the initial active set, resulting in a modified active set. In response, a signal-strength factor is calculated based on (a) a last non-zero signal-strength measurement of the first coverage area and (b) a second value. One or more forward-link power-control step sizes is selected based on at least the calculated factor. The one or more selected step sizes is used to increase the forward-link transmission power of at least one coverage area in the modified active set.

The invention provides a calculation method for a social network user relationship based on statistical characteristics. The method comprises the steps that (1) user interaction behavior data is collected from a business system; (2) a user interaction record set is generated according to the user interaction behavior data, statistics is performed on interaction frequency distribution of a user pair set and each user pair, and accordingly statistics is performed on interaction frequency distribution of each user; (3) statistics is performed on total interaction frequency and interaction frequency distribution of each user, and relationship strength factors of each user are calculated; and (4) the relationship strength of each user pair in the user pair set is calculated. According to the method, the statistical characteristics of user interactions are utilized to quantize the user relationship, the quantized value can accurately and objectively reflect the relationship between users, and accordingly the type of the user relationship is judged.

The invention discloses a quick design optimization method for a large structure. The quick design optimization method comprises the following steps of 1, acquiring overall basic parameters and determining structure configuration according to the acquired overall basic parameters; 2, acquiring a loading condition, and calculating an equivalent axial load of the large structure according to the most harsh working condition; 3, optimizing the structure configuration by using an analytic method optimization design algorithm, namely setting an initial condition according to the equivalent axial load, selecting weight, a remaining strength factor or rigidity as a criterion through a formula, and performing iterative optimization on the structure configuration to obtain a plurality of groups of optimal parameters; 4, selecting proper optimal parameters to establish a wireframe model used for strength finite element analysis and a skeleton model for main structure modeling; 5, performing three-dimensional digital prototype modeling according to the wireframe model and the skeleton model.

The invention relates to a block removing device and a method. The block removing device comprises a filter, a block detecting module and a mixing unit, wherein the filter is used for receiving a target pixel in a pixel matrix to generate a filtered target pixel; the block detecting module is used for generating a block removing strength factor according to the pixel matrix; and the mixing unit is used for receiving the target pixels and the filtered target pixel and mixing the target pixels and the filtered target pixel to generate an output pixel according to the block removing strength factor.

A diamond Berkovich indenter design method based on strength factors comprises steps as follows: I, the dynamic microscopic tensile strength of three side surfaces of a diamond Berkovich indenter is assumed as weighed stacking of characters of three typical crystal plane families (100)(110)(111), and dynamic microscopic strength of any crystal plane and any crystal orientation of a diamond crystal is derived; II, the diamond Berkovich indenter with different crystal plane combinations is designed, and the dynamic microscopic tensile strength of each side surface is calculated; III, calculation and evaluation methods of the grinding strength factor and the anti-wear strength factor are put forward, and differences of radiuses of blunt rounds obtained by grinding an edge and a point of the indenter and the wear resistance of the indenter in the use process are quantitatively evaluated according to the grinding strength factors and the wear strength factors, obtained through comparison and calculation, of the edge and the point of the diamond Berkovich indenter. The diamond Berkovich indenter design method has important significance in breaking through technological monopoly of foreign countries, improving the measurement precision of the micro-nano scale mechanical property of a material and promoting development of manufacturing techniques of domestic high-precision diamond Berkovich indenters.

The invention discloses a self-regulation tracking method used for a tracking maximum power point of a photovoltaic inverter. The self-regulation tracking method is characterized in that a P-I variable rate dP/dI is utilized as a regulated variable to construct an inversion current regulation setting control law general expression, the inversion current regulation setting control law adopts a function concrete form variance time domain expression that Io[k]=Io[k-1]+delta Io[k], wherein k is the ordinal number of an alternating current sine wave period or the ordinal number of a pulse width modulation period, and Io is a set current; and delta P is output power differentiation or variation of a photovoltaic cell or an assembly bunch of discrete time, delta I is output power differentiation or variation of the photovoltaic cell or an assembly bunch of discrete time, and lambda k is a strength factor of a variable rate feedback action. The self-regulation tracking method provided by the invention can be used for tracking the maximum power point of the high performance photovoltaic inverter which performs adjustment according to a completely natural law, and the tracking property of the maximum power point is further improved because of a P-I variable rate asymmetry characteristic.

The invention discloses a PIDT (proportion integration differentiation template) control technology and method with an optional control template. The PIDT control technology comprises PID (proportion integration differentiation) control and template control. By the template control, the dynamic response performance of a system is improved. In the process of the PID control, a set of control parameters are difficult to adapt to a starting process when a large deviation occurs, and to a work process when a small deviation occurs at the same time, because the contradiction between a response speed and a overshoot quantity exists. The main method of the PIDT control technology comprises the following steps of: in the process of controlling the system to start (the deviation is relatively large), using the template (T) to independently control or using the PID and the template (T) to jointly control, wherein the controlled quantity of the template is determined by the selected template and the template control strength factor; in the process of working, when the deviation is small, using the PID control, when the deviation is more than a certain value, invoking the template control; and when the deviations are different, selecting different template control coefficients, wherein the action time of the template control at every time is limited. In the PIDT controller with the optional control template, not only a built control template is for use, but also the template can be individually built according to the control rule.

The invention discloses an R-TBF-based RFID redundant data cleaning strategy. Firstly, a filter is initialized, wherein an integer array M used for storing data time attributes, a Hash function, a mapping function, a Map set P, a time threshold tau and an intensity threshold alpha are included; then, the redundancy of current data X is judged, and according to the {ID, TIME, RSSI} format transmission and cleaning rule, redundant data cleaning is conducted; finally, processing of the current data X is completed. According to the R-TBF-based RFID redundant data cleaning strategy, the two constraints, namely the time factor and the strength factor, are taken into consideration so as to conduct corresponding cleaning on the data, through primary timestamp cleaning and secondary intensity value cleaning, the cleaning effect is improved, the data quality is improved, the data authenticity is restored to the largest extent, and a strong guarantee is provided for the effective utilization of subsequent data.