336 results about "Heat analysis" patented technology

The inventive method consists in: modeling for thermal analysis of heating and temperature rise of the main shaft, using a cylindrical-coordinate system for the temperature distribution of the axially symmetric structure and determining the boundary condition; calculating friction heat and power loss of front and back bearings of main shaft in a state of different speeds and different pretightening forces; determining the relation of axial shifting of the bearing with the pretightening forces; according to the above calculated data, choosing material for making double-layer bushing and making length different double-layer bushing size of the sleeve because the extension volume of the bushing heat expansion depends on the length of the sleeve.

Polypropylene-Polyethylene blends comprising A) 75 to 90wt% of a blend of A-l) polypropylene and A-2) polyethylene and B) 10 to 25wt% of a compatibilizer being a heterophasic polyolefin composition comprising B-l) a polypropylene with an MFR2 between 1.0 and 300 g/10 min (according to ISO 1133 at 230 DEG C at a load of 2.16 kg) and B-2) a copolymer of ethylene and propylene or C4 to C10 alpha olefin with a Tg (measured with dynamic-mechanical thermal analysis, DMTA, according to ISO 6721-7) of below -25DEG C and an intrinsic viscosity (measured in decalin according to DIN ISO 1628/1 at 135DEG C) of at least 3.0 dl/g, whereby the blend has simultaneously increased Charpy Notched Impact Strength (according to ISO 179-leA, measured at 23DEG C), Flexural Modulus (according to ISO 178) as well as heat deflection resistance (determined with DMTA according to ISO 6721-7).

The invention discloses a method for dynamically simulating intermediate-frequency heat treatment process of longitudinal welded pipes. According to the method, the movement of welded pipes in practical production is replaced by the movement of induction coils, an ANSYS APDL language-based macro document library, and the macro document library comprises a control library, a parameter library, an environment library and a computation library, wherein the control library is used for controlling the execution sequences of macro documents in the parameter library; the parameter library comprises modeling parameters and load parameters when the coils are at different positions; the environment library is used for establishing geometric models, meshing, load application and solving types required by two physical environments: electromagnetic analysis and heat analysis; and the computation library is used for carrying out electromagnetic-thermal coupling computation on the induction heating process by adopting DO circulation and storing the solving result into a database. Compared with the prior art, the method is capable of dynamically simulating the intermediate-frequency heat treatment process of the longitudinal welded pipes, and the simulation is closer to the reality; through modifying the parameters, various production processes of the factories can be simulated; and the whole simulation process takes ANSYS software as a platform, so that the operation is automatic, the operation is simple and the factory technicians can grasp and use the method conveniently.

The invention relates to a thermal analysis testing method of magnesium and magnesium alloy deteriorate process organizing thinning effect, which specifically uses the correlation between the deteriorate effect and the characteristic parameter on the cooling rate curve when a fused mass is solidified, establishes a thermal analysis testing technique, and develops a corresponding thermal analysis apparatus based on the thermal analysis testing technique. The thermal analysis testing technique of the invention has the following steps: 1, establishing a thermal analysis cooling curve (T -t); 2, derivation to the cooling curve to obtain a cooling rate curve (dT/dt -t); 3, respectively calculating the recalescence exothermic peak areas of the fused mass fore and after the deterioration; 4, defining the deterioration degree to judge the deterioration effect. The thermal analysis process includes data capture, computer analysis of the cooling curve, quantization of the exothermic peak areas, and result comparison; the process is realized by the computer and data analysis software, which are configured to a computer aided thermal analysis detecting device. The thermal analysis testing method and testing apparatus of the invention can be used in the smelting field of magnesium and magnesium alloy, as a ladle analysis approach to control and improve the metallurgy quality.

The present invention generally relates to a novel method for the characterization and quantification of involatile macromolecules in hydrocarbon samples of crude oil. More particularly, the method utilizes pyrolysis/gas chromatography/mass spectrometry (PY/GC/MS, PY/GC/MS/MS or PY/GC/triple quad MS) to detect and quantify polymeric asphaltene inhibitors in crude oil.

A process for producing moldings, in which a pigmented coating composition (P) and a free-radically crosslinkable coating composition (K), which after crosslinking to completion produces a transparent coating (KE) are applied to a support sheet a dried but as yet not completely crosslinked coating (KT) is produced from the coating composition (K), the coated support sheet is shaped and is injection backmolded or foam-backed with a liquid polymeric material, and the coating (KT)—if this has not already taken place—is cured or aftercured; the crosslinkable coating composition (K) comprising a free-radically crosslinkable component (KK) which contains hydrogen bond forming structural elements in an amount such that

• 1. a coating (MT) produced from the mixture (M) of component (KK) with additives, but as yet not crosslinked to completion, has a ratio of storage modulus G(MT)′ to loss modulus G(MT)″ of from 5 to 200, G(MT)′ and G(MT)″ having been determined at 20° C. by means of rheological oscillation measurements, and
• 2. a coating (ME) produced from the mixture (M) of component (KK) with additives and crosslinked to completion has a storage modulus E(ME)″ of from 1.0*10^7.0 to 8.0*10^7.0 Pa, E(ME)′ having been measured in the rubber-elastic range by dynamic mechanical thermal analysis.

The invention provides a transcript placement method based on file heat analysis and K-means. At first, The access frequency of a file in a given period of time is analyzed to calculate the access heat of the file. A possible file with high access heat is predicated by the access heat of the file, in combination with the K-means algorithm, and the number and placement positions of file transcripts are dynamically adjusted on demand by comprehensively considering a statistical cycle, a file size, a working environment and other factors. The transcript placement method provided by the invention can be used for effectively shortening the average response time of file access and improving the data service performance.

The invention discloses a temperature field and thermal circuit direct coupling-based motor heat analysis method. Part of parts of a motor are modeled by adopting a finite element method, and other parts are modeled by adopting a thermal circuit method. A temperature field is related to a thermal circuit through an equivalent temperature boundary and an equivalent convection boundary. During solving, a thermal circuit part is regarded to consist of one-dimensional finite element units, and two connected boundaries are regarded as two boundary units. Finally a unit stiffness matrix, a unit load matrix, a unit mass matrix and the like corresponding to the one-dimensional finite element units and the boundary units are superposed to a global stiffness matrix, a global load matrix and a global mass matrix, and the temperature field and the temperature distribution in the thermal circuit are worked out at the same time through a method for solving a global linear equation set. According to the method, the advantages of the finite element method and the thermal circuit method in the motor heat analysis are combined, so that sufficient calculation precision can be ensured and the calculation speed can be remarkably increased.

The thermoelectric module with bi-tapered thermoelectric pins is a semiconductor device configured as a thermoelectric power generator that has pins made of Bismuth Telluride that attach to a ceramic hot plate and a ceramic cold plate to form a thermoelectric module (TEM). The pins will include at least one N-doped pin and one P-doped pin. The bi-tapered pin structure of the TE pins exhibits low maximum thermal stress as predicted by thermal analysis, thereby maintaining thermal, electrical, and mechanical integrity of the TEM device.

The present invention discloses a calculation method and system for relevance degree of an individual share and an article. The system comprises a data acquisition module, a relevance degree analysis module, an emotion analysis module, a heat analysis module, a data storage module and a data retrieval module. The method comprises: acquiring massive financial news corpus every day; performing text data mining; analyzing a relevance between an individual share and an article among the corpus that is acquired in real time; analyzing individual share emotion in the corpus that is acquired in real time; summarizing the relevance between the individual share and the article, i.e. heat of the individual share daily; enabling an investor to retrieve market condition news of a share that draws the attention of the investor, and providing the relevance degree with the article, and historical heat indicators of the emotion and share for reference, so that the method and system become an excellent retrieval tool of the investor for individual share market condition news.

The invention discloses an inertial platform residual stress release simulating method based on a finite element, which comprises the steps of: 1, modeling an initial platform entity, integrally obtaining an initial platform entity model by applying entity drawing software, then guiding the initial platform entity model into finite element simulating software; 2, modeling an air column, establishing initial platform peripheral air into an air column model; 3, assigning initial platform and air column material attributes, inputting the initial platform and air column material attributes according to the requirement on the finite element simulating software; 4, modeling an initial platform and an air column finite element grid, wherein two procedures of selecting a unit type and dividing the grid are included; and 5, coupling and analyzing an initial platform heat-structure, wherein two procedures of transient heat analysis and structure analysis are included: the transient heat analysis is as follows: a temperature cycle stress is loaded on the outer surface of the air column so as to provide heat conditions for the inertial platform residual stress release simulating analysis, andthe structure analysis is as follows: an initial platform transient heat analysis result is loaded to the heat-structure coupling analysis to obtain a rule of releasing the inertial platform residualstress with the temperature cycle stress.

The invention relates to a bionic principle-based structure cooling channel layout optimization design method. The method comprises the steps of firstly building a geometric model for design according to the shape size of a design object, then applying a heat source and heat boundary conditions to a structure according to actual working conditions, and performing finite element heat analysis to obtain heat dissipation of each unit; and by adopting a cooling channel layout optimization design mathematic model, repeatedly updating a section area of a cooling channel according to a growth mechanism of a natural branch system, namely, a branch always grows according to a direction and a speed of enabling the whole system function to be optimal, until the total volume of the grown cooling channel reaches a predetermined total volume upper limit qV0. Through the optimization design method, the cooling channel layout is reasonable and the cooling efficiency can be improved; and compared with empirical design and analogical design adopted by a conventional cooling channel layout, an optimal layout under complex heat boundary conditions can be realized.

The invention discloses a method for repairing cyanide-polluted soil by a physical heat analysis technology. The method comprises such steps as control of a water content theta m of the cyanide-polluted soil below 20%, smashing of the soil to reach an aggregate diameter below 2 cm, feeding of the soil into a physical heat analysis kiln for repairing and tail gas treatment. The method is adopted to repair the cyanide-polluted soil, so that the high-concentration cyanide-polluted soil can be treated, the problem that the soil physicochemical properties are largely changed by a chemical oxidation method is solved, the soil dehydration difficulty in actual engineering operation is prevented, and the repair rate can reach above 99%.

The invention relates to a method for optimizing integrated circuit layout heat distribution, which belongs to the field of integrated circuit design automation. The method comprises the following steps of: inputting a circuit netlist, a circuit simulation result, a physical layout of a circuit and a physical design rule of the circuit; performing circuit analysis to determine a key apparatus anda key net in the circuit; setting a filling barrier on the physical layout of the circuit according to the physical design rule of the circuit; performing heat analysis to determine a key heat point on the physical layout of the circuit; adding a heat-conduction passage for the key heat point, filling dumb metal patterns on a metal layer according to the heat-conduction passage and the physical design rule of the circuit, and additionally forming dumb metal through holes according to the heat-conduction passage and the physical design rule so as to connect the dumb metal patterns on the heat-conduction passage until the physical layout heat distribution of the circuit cannot be optimized through new dumb metal filling; and outputting the filled metal patterns to a physical layout database. The heat distribution of the integrated circuit physical layout can be effectively optimized through dumb metal filling.

The invention discloses a news event information induction method, which comprises the following steps: collecting news materials, and creating a news library; obtaining all news texts of the target event from a news library, carrying out heat analysis, obtaining an inflection point news text, extracting event information in the inflection point news text, and storing the event information; the method for obtaining the news text of the inflection point comprises the following steps: obtaining the news text of the inflection point, counting the hot values of all the news texts, sorting according to the time sequence of news text release, constructing a curve graph of the hot values changing along with time, taking the news texts corresponding to all the maximum points of the curve graph, namely the inflection point news text, and enabling the hot values to be the sum of the page view of the news and the independent visitor volume of the website. According to the method disclosed by theinvention, the development situation of the news event is accurately reflected by selecting the news text, namely the inflection point news text, when the target news event is at the key node for abstract analysis and processing.

The invention discloses a pipeline steel welding residual stress prediction method based on ANSYS. The method is characterized by sequentially comprising the following steps that (1) welding piece welding conditions are determined; (2) a solid model of a welding piece is established, an SOLID70 unit dividing scanning net is defined, solving constraint and loading on a welding temperature field are exerted according to practical working conditions; (3) a heat analysis unit SOLID70 is converted into a structure analysis unit SOLID45, the elasticity modulus, the linear expansion coefficient, the Poisson ratio, the yield stress and the elasticity modulus after yield under different temperatures of the welding piece are defined; (4) node temperatures obtained by temperature field analysis are used as loading to be exerted on the structure model, how the constraint conditions are exerted is determined according to model specific situations, and then residual stress distribution is solved. The method is high in analysis efficiency and high in accuracy.

The invention discloses a simulation method and device for multi-physical-field coupling of an electric reactor and a storage medium. The method comprises the steps of acquiring geometrical parameters, material data and working condition information of an electric reactor; establishing a geometric model of the reactor according to the geometric parameters, and performing mesh generation on the geometric model to obtain a plurality of geometric components; setting a material attribute corresponding to each geometric component according to the material data; setting boundary conditions of the reactor according to the working condition information; wherein the boundary conditions comprise an electromagnetic field boundary condition, a thermal boundary condition and a flow field boundary condition; according to preset solving settings, electromagnetic field analysis, making thermal and flow field analysis one by one to obtain analysis result data; and carrying out post-processing on the analysis result data to judge whether the design of the reactor is reasonable or not. According to the invention, electric-magnetic-thermal-fluid coupling field analysis of the electric reactor can be realized, and the design of the electric reactor is optimized, so that the electric reactor can operate more stably.

The invention discloses a high-thrust carrier rocket low-temperature final-stage storage-tank connection support structure design method. The method specifically includes the steps of 1), material selection, namely selecting carbon fiber composite materials having higher strength and lower thermal conductivity in 20K-90K low-temperature zones on the basis of the ratio of the strength to the thermal conductivity; 2), preliminary structure style design, namely performing five kinds of preliminary structure designs by taking structure strength and heat flow restrictions into consideration; 3), strength and weight analysis, namely, performing analysis on tensile stress, compression stress and buckling factors under the condition of bearing big load of tensile and compression; 4), heat analysis, namely selecting a structure style lowest in heat flow rate in structure styles meeting requirements of strength in the step 3). By optimization of the method, the high-strength carbon fiber composite materials are used in V-shaped 20-bar structure design of a low-temperature tank of a carrier rocket, and requirements of the ascent stage the high-thrust carrier rocket on large load are met.

The invention provides a differential thermal-gas chromatography combined analysis device which belongs to the field of analysis instruments and relates to an intermittent combination device of a differential thermal analyzer and a gas chromatographic analyzer. The differential thermal-gas chromatography combined analysis device comprises the differential thermal analyzer (1) and the gas chromatographic analyzer (2); a gas sampling component (3) and a temperature sensor are arranged at a gas outlet of the different thermal analyzer (1), wherein the output of the gas sampling component (3) is connected to a sampling port of the gas chromatographic analyzer (2) through an automatic air inlet control mechanism. In the invention, the gas sampling component (3) and the automatic air inlet control mechanism are arranged on the basis of the traditional differential thermal-gas chromatography intermittent combined analysis device, a differential thermal signal, a furnace temperature signal and a temperature signal at a tail gas outlet of the differential thermal analyzer (1) are acquired in real time, and the predicting discrimination is carried out according to a time sequence curve of all signals so as to control that tail gas is guided into the gas chromatographic analyzer (2) to carry out ingredient separation and detection. The differential thermal-gas chromatography combined analysis device can realize automated operation and is suitable for operations without manual supervision.

The invention discloses a semiconductor laser temperature simulation method based on TEC temperature control. Thermal analysis software ANSYS is adopted for carrying out temperature field simulation on the semiconductor laser, constant temperature control on TO-CAN packaging TOSA is realized through dynamically controlling a heating or refrigeration state of the TEC, and thermal features of the semiconductor laser in an actual working state are simulated. CAD modeling software SolidWorks is adopted for building a 3D model which can thoroughly and actually reflect TOSA thermal features; the ANSYS is adopted for temperature field simulation, the TEC control is dynamically realized through simulation algorithm, the simulation progress is quickened, and the simulation accuracy is improved. According to the designed simulation algorithm, an accurate temperature result can be simulated at a -20DEG C to 60DEG C external temperature range, and evaluation on packaging and inner optimization of the semiconductor laser during an actual production process can be guided.