60 results about "Structural temperature" patented technology

The invention discloses a method for quickly calculating transient thermal stress of a ceramic radome along a flight path, which comprises the following steps of: determining calculation input which comprises an aerodynamic thermal environment of the ceramic radome and a to-be-evaluated structure scheme; setting a circumferential discrete strategy of the ceramic radome to determine a plurality of meridian planes of the ceramic radome; constructing an aerodynamic thermal environment interpolation model, and determining a meridian plane where aerodynamic heating of the ceramic antenna housing is most strict in the whole flight process; constructing a two-dimensional feature structure model for transient heat transfer and thermal stress analysis of the ceramic radome, and determining an outer contour line of the two-dimensional feature structure model; constructing an axial thermal response calculation interval of the ceramic radome and performing interpolation calculation to obtain aerodynamic thermal environment parameters of the outer contour line at each flight moment; performing heat transfer calculation grid division on the two-dimensional feature structure model, and calculating structure transient temperature distribution of the two-dimensional feature structure model; calculating the temperature gradient of the structure based on the transient temperature distribution of the structure; and calculating transient thermal stress distribution of the ceramic radome by using the structural temperature gradient.

The invention discloses a dynamic seal leakage characteristic test device, which comprises a shell, end covers, a rotating shaft, two turntables, a radial displacement adjusting structure, a temperature sensor, a pressure sensor and a flowmeter, and is characterized in that the end covers are cooperatively installed at two ends of the shell and then cooperatively installed on the rotating shaft, the middle part of the shell is provided with an air inlet, the end covers are provided with air outlets, and the number of the turntables is two; the two rotating discs are installed on the periphery of the rotating shaft in a spaced mode and located on the two sides of the air inlet, the peripheries of the rotating discs and the inner periphery of the shell form an annular cavity used for installing a dynamic seal test piece, and the radial displacement adjusting structure is connected with the shell and used for driving the shell to move in the radial direction of the rotating shaft. And the temperature sensor, the pressure sensor and the flowmeter are respectively used for monitoring the temperature and the pressure at the air inlet and the air flow at the air outlet. The dynamic seal leakage characteristic test device can measure the leakage rate of the brush seal under the conditions of different pressure differences, different temperatures and different rotating speeds, and can simulate the radial interference working condition under the impact of a large load.

The invention relates to the technical field of tunnel state diagnosis and early warning, and discloses a tunnel health state intelligent diagnosis and early warning method based on multi-modal fusion, which comprises the following steps of: 1, arranging various types of sensors on a tunnel structure, multi-modal data information such as vibration response, reinforced concrete corrosion condition, circumferential strain, structural temperature, longitudinal pipe joint opening displacement and water leakage, traffic load and the like is collected in real time. According to the tunnel health state intelligent diagnosis and early warning method based on multi-modal fusion, through deep fusion of sensing data of multiple modals, the advantages of different sensors are fully played, information islands among data of all modals are broken through, advanced data fusion algorithms and models are utilized, deep mining and analysis are carried out on multi-source heterogeneous data, and the tunnel health state intelligent diagnosis and early warning method based on multi-modal fusion is realized. The health information of the tunnel structure can be obtained more comprehensively and accurately, fine evaluation of the health state of the tunnel is achieved, and the reliability and accuracy of the evaluation result are improved.

The invention discloses an inflatable returner structure safety analysis method and system considering a thermo-pneumatic elastic effect, and the method comprises the steps: building a structural dynamics sub-model, a fluid domain calculation sub-model and a structural thermodynamics sub-model of an inflatable returner, and comprehensively considering the structural thermal deformation caused by aerodynamic heat and the thermal expansion effect of an internally inflated gas; and a bidirectional coupling relationship among aerodynamic force, aerodynamic heat, structural deformation, temperature and internal charging pressure is constructed through the feedback effect of structural deformation on a flow field and an aerodynamic load. And carrying out multi-physics field simultaneous solution by adopting a time step propulsion method, and finally realizing comprehensive safety evaluation of the temperature, stress and deformation characteristics of the structure. According to the method, aerodynamic load distribution, temperature field change, stress response and vibration characteristics of the inflatable returner in the reentry process can be accurately predicted, so that the thermal protection performance and structural safety of the inflatable returner are comprehensively evaluated, and reliable analysis means and engineering basis are provided for optimization design and structural stability improvement of a thermal protection system.

The application provides a method for determining the structural temperature field and thermal deformation of a compressor rotating disc cavity, which can be applied to the technical field of heat analysis of turbomachinery. The method comprises the following steps: obtaining the geometric parameters, operating parameters and working substance property parameters of the gas in the disc cavity; based on the balance between the buoyancy effect and the viscous effect driven by the centrifugal force, the average heat flux density of the outer ring cover of the disc cavity is obtained according to the outer ring cover radius, the axial gap of the disc cavity, the rotating disc speed, the outer ring cover temperature, the rotating core zone temperature, the Prandtl number, the density, the dynamic viscosity and the thermal conductivity; based on the heat conduction analogy relationship of the laminar Ekman boundary layer, the local heat flux density of the rotating disc is obtained according to the rotating disc speed, the kinematic viscosity, the thermal conductivity and the difference between the rotating disc temperature and the rotating core zone temperature; and the structural temperature field distribution and the thermal deformation of the rotating disc cavity are obtained according to the average heat flux density of the outer ring cover of the disc cavity and the local heat flux density of the rotating disc.

The utility model discloses a corrosion type PH transmitter probe, which comprises a device body, the device body comprises a plug-in device, a fixed cylinder and a protective device, the fixed cylinder is arranged at the top of the plug-in device, and the protective device is arranged at the bottom of the fixed cylinder; the protection device comprises an outer protection shell, a first reference lead, a second PH reference lead, a diaphragm and a temperature sensor, the outer protection shell is of a cylindrical structure, the diaphragm is installed at the bottom of the outer protection shell, a PH glass film is arranged at the bottom of the diaphragm and is of a balloon-shaped structure, and the temperature sensor is located in the PH glass film. The first reference lead and the second PH reference lead are both located in the outer protective shell, one end of the first reference lead and one end of the second PH reference lead are connected with the temperature sensor, and the other end of the first reference lead and the other end of the second PH reference lead are connected with the plug-in device. The device can effectively achieve the purpose of self protection, thereby preventing corrosion and damage to the transmitter probe caused by external factors.

The utility model discloses a super-long structure temperature induction joint structure which comprises a U-shaped groove induction joint arranged at the weak stress position of a super-long structure, a water stop belt is embedded in the bottom of the U-shaped groove induction joint, a drainage structure is fixed to the outer side of the bottom of the U-shaped groove induction joint, and the drainage structure is connected into an adjacent rainwater vertical pipe. And the U-shaped groove induction joint is filled with a joint filling material. According to the temperature induction joint structure, the problem of water seepage at the structural joint is solved, the maintenance cost is reduced, and the building facade effect and structural column grid arrangement are not affected.

This invention relates to the field of bridge engineering technology, specifically to a method and system for calculating temperature fatigue damage. The method includes the following steps: establishing daily temperature curves for the top and bottom slabs based on measured temperatures over a set time period; obtaining the absolute value of the overall temperature difference, the maximum positive vertical temperature difference between the top and bottom slabs, and the absolute value of the maximum negative vertical temperature difference between the top and bottom slabs based on the daily temperature curves; determining the daily equivalent temperature stress amplitude based on the daily absolute values ​​of the overall temperature difference, the maximum positive vertical temperature difference between the top and bottom slabs, and the maximum negative vertical temperature difference between the top and bottom slabs; and calculating the temperature fatigue damage of the bridge structure based on the S-N curve and the daily equivalent temperature stress amplitude. This invention provides a method and system for calculating temperature fatigue damage, which can solve the problem of the need for highly computational equipment and the difficulty in calculating temperature fatigue in existing technologies.

A temperature monitoring unit may be removably installed inside an aircraft wing structure for monitoring temperature conditions along the span of the wing. The wing structure has a temperature-sensitive device (162) for monitoring a temperature con- dition, which is attached to a support frame (173). The support frame and attached temperature-sensitive device may be installed as a unit within the wing structure. The support frame may be configured for sliding engagement inside the wing structure, for example, with a set of tracks.

An intelligent construction method for the global time-varying temperature field of a long-span concrete bridge structure, which relates to the technical field of bridge structure temperature field prediction. Discretize the bridge and calculate the position coordinates; consider the solar radiation received by the entire bridge and divide it according to the position coordinates; collect measured environmental data; construct a data set and perform normalization processing; construct a physical constraint loss function and a data constraint loss function; construct a neural network model with the output target being the final predicted value; during the model training process, configure weight coefficients for the constraint terms and update until the loss converges to obtain the temperature prediction result; evaluate the neural network model and complete the training; use the neural network model to predict the temperature of the actual bridge. Establish an association mechanism for bridge temperature prediction, predict the bridge temperature at a future moment while considering historical temperature data, and introduce a physical mechanism to form a constraint loss with double constraints of physical data, thereby improving the prediction accuracy.

The utility model relates to the technical field of regulator, concretely relates to a regulator with temperature protection function, regulator body, back cover, integrated circuit and temperature sensor, the recess is arranged to the lower surface of regulator body, the back cover can be connected in the recess along the mouth and is formed with the cavity structure with the recess cooperation, the integrated circuit is arranged in the cavity structure, the boss is arranged on the back cover, the boss is hollow structure, the temperature sensor is arranged in the lower end in this boss, the temperature sensor is connected on the integrated circuit through the wire, among them, the regulator with temperature protection function is installed on the generator back cover, the boss lower end can contact the copper line on the stator assembly of generator. The boss contacts on the copper line on the stator assembly, the heat that the copper line of stator assembly sends out can be passed through the boss and is delivered to the temperature sensor in the working process of generator, the temperature sensor is connected with the integrated circuit, and the integrated circuit adjusts the duty cycle of generator through the temperature value of measurement.

The invention relates to a fluid-solid-heat coupling calculation method and device based on wall surface temperature heat flow correction, and relates to the technical field of fluid-solid coupling calculation. The method comprises the steps of calculating initial wall surface heat flow and initial surface pressure; performing structure transient heat conduction calculation in the initial time interval by taking the initial wall surface heat flow as a heat boundary condition to obtain first structure temperature distribution; calculating structural deformation to obtain a first wall surface heat flow and a first surface pressure; repeating the steps to obtain second structure temperature distribution; in the first time interval, calculating a corrected heat flow through a heat flow interpolation model; judging whether the corrected heat flow exceeds a precision threshold value or not; if not, skipping structural deformation and fluid domain calculation at a second moment, and entering a second coupling step; if yes, calculating structural deformation and a fluid domain at a second moment, and entering a second coupling step; and the preset total simulation time is reached. According to the method, the simulation calculation efficiency can be improved while the calculation precision is ensured.

The utility model provides a concrete box type structure with the inside and outside temperature difference adjusting function, which comprises a box type beam and a conical ventilation pipe, a plurality of first reserved through holes penetrating inside and outside are arranged on a side web of the box type beam, and the conical ventilation pipe is fixedly arranged in the first reserved through holes. And the small-aperture end of the conical ventilation pipe faces the interior of the box chamber of the box beam. According to the concrete box-type structure, the temperature difference between the interior and the exterior of the box is automatically adjusted through the conical ventilation pipes arranged on the side web plates of the box-type beams, the temperature inside and outside the concrete box-type structure can be reduced under the condition that non-renewable resources are not consumed, and the concrete box-type structure is cleaner and more environmentally friendly compared with mechanical means; the structural temperature stress generated by the temperature difference can be effectively reduced, the configuration of common steel bars or prestressing tendons is reduced, and the economic and technical indexes of the concrete structure can be improved.

The invention provides a measuring device and method for measuring the liquid level height of liquid in a low-temperature container, and relates to the field of measuring the liquid level height of the liquid in the low-temperature container, the measuring device comprises a liquid frame structure, a temperature sensor, a signal acquisition structure and a data processing structure, the liquid frame structure comprises an outer frame structure and an inner frame structure, the outer frame structure and the inner frame structure are each of a cuboid structure. A plurality of temperature sensors are arranged, the plurality of temperature sensors are arranged on the side wall of the inner frame structure, the plurality of temperature sensors are distributed in the direction perpendicular to the ground, and the temperature sensors are attached to the outer side wall of the inner frame structure; the signal acquisition structure is electrically connected with the temperature sensor, and the signal acquisition unit is arranged on the outer frame structure; and the data processing structure is electrically connected with the signal acquisition structure. According to the invention, the problems of intrusive damage to the heat insulation layer, weak anti-interference capability and limited application scene are solved.

The invention relates to the technical field of positive displacement pumps, and discloses a pump and a mechanical seal wear-resisting structure.The pump comprises a base, a motor fixedly arranged on the base, a rotating shaft fixedly arranged at the output end of the motor and a pump body fixedly arranged on the base and further comprises a connecting support, and a fixing block is fixedly installed in the connecting support; a wear-resistant structure is movably mounted in the fixed block; through the wear-resistant structure, the first-stage pushing structure is triggered when the temperature rises for the first time, the second-stage pushing structure is triggered to automatically enhance the lubricating effect when the temperature rises continuously and abnormally, and intelligent lubrication supplied according to needs is achieved by means of thermophysical characteristics and magnetic coupling of materials; the risk that the mechanical seal is damaged in a dry grinding state is greatly reduced, the service life of the pump is prolonged, lubricating oil is distributed according to needs, and waste is avoided.

The utility model relates to the technical field of sensor mounting equipment, in particular to a mounting structure, a temperature sensor and a reaction kettle, the mounting structure comprises a flange, a base plate and a lining plate, the base plate is positioned on one side of the flange, a first mounting hole is formed in the center of the base plate, and the lining plate is positioned on the other side of the flange. By additionally arranging the base plate, the direct acting force of negative pressure in the reaction kettle on the joint of the temperature measuring rod can be dispersed, the overall structural strength of the mounting structure is enhanced, the risk of tearing the lining is reduced, the service life of the temperature sensor is prolonged, the maintenance cost of equipment is reduced, and the service life of the temperature sensor is prolonged by enhancing the stability of the mounting structure. According to the utility model, the temperature measurement accuracy of the temperature sensor is ensured, production safety accidents and environmental protection risks caused by inaccurate temperature measurement are avoided, and the production safety and stability are improved.

The application provides a manufacturing method of a concrete structure temperature stress release groove, and specifically comprises the following steps: S1, setting multiple groups of frame columns on a construction site; S2, pouring concrete blocks between the multiple groups of frame columns; S3, installing edge sealing beams in a 'concave' shape between the multiple groups of frame columns, so that a backfill space for lightweight concrete is reserved in the middle of the edge sealing beams; S4, installing foamed polystyrene boards on the inner sides of the 'concave' shaped edge sealing beams on the left and right sides close to the lightweight concrete backfill space reserved in the middle; S5, backfilling lightweight concrete so that the lightweight concrete fills the lightweight concrete backfill space reserved in the middle of the edge sealing beams; and S6, after the lightweight concrete solidifies, using an acetone solution to dissolve the foamed polystyrene boards, so that gap joints are formed between the lightweight concrete and the left and right ends of the edge sealing beams. The application has the advantages of simple process, small construction difficulty, short construction period, convenient operation, no need for additional steel bars, and low construction cost.

The application discloses a kind of for space electron beam welding test device, comprising: equipment controller, inside the box is placed, with moving mechanism, infrared thermal imaging detector and electron beam gun connection;Mobile control instruction is sent to moving mechanism, and the detection of structural temperature field distribution performance;Electron beam gun, the electron beam generated, for the welding, cutting or additive forming on test workpiece after heating and melting of metal wire;Excess protection device is placed below electron beam gun, to prevent metal droplet on test workpiece from flying out.Infrared thermal imaging detector, the cutting, welding and additive process of electron beam gun are photographed;Temperature is measured;Moving mechanism moves according to mobile control instruction;Radiation plate radiates heat generated to the outside of box;Test workpiece is placed on the upper surface of excess protection device, excess protection device is connected with moving mechanism, moves with moving mechanism, drives test workpiece to move, realizes the processing of test workpiece.

The invention provides a gradient tightly-supported domain radius optimization principle-based temperature distribution inversion method, which comprises the following steps of: 1, performing unit node division on a measured structure to obtain a unit node temperature value and a temperature function correlation model between any point in the measured structure; step 2, adaptively adjusting a function tight supporting domain radius by using a temperature gradient of a node of a measured structure unit; 3, formulating an optimization scheme of the number and position layout of the fiber grating sensors, and obtaining an optimal configuration form of the sensors through global optimization search; and 4, constructing a multivariable regression error functional model added with a regularization term, solving the unit node temperature value by combining the unit node temperature value with a temperature function correlation model between any points in the measured structure, and performing inversion to obtain the temperature distribution of the measured structure. According to the method, the number and the positions of the fiber grating sensors are optimized, unnecessary measuring point arrangement is reduced, and the use cost and the failure risk are reduced on the premise that the influence on the reconstruction precision of the temperature field is small.

The present invention discloses a multi-tower asymmetric low-tower cable-stayed bridge. The multi-tower low-tower cable-stayed bridge is a long-span structure with a large structural temperature effect; the existing symmetrical structure causes waste of engineering investment. The present invention includes side spans, main spans, and bridge towers, and the steel trusses are fixedly connected to the bottom of the bridge towers; supports are set on the top surfaces of the main piers, auxiliary piers, and connecting piers, and the main pier at the center position is provided with longitudinal and transverse fixed supports on one side of the transverse bridge direction, and longitudinal fixed supports on the other side, and longitudinal movable supports and longitudinal and transverse movable supports are set at other piers; dampers are set on both sides of the supports along the bridge direction; the bridge towers are set at different heights, with high bridge towers configured for large-span spans and low bridge towers configured for small-span spans, and the number of inclined cables matches the height of the bridge towers. The bridge piers where the longitudinal fixed supports are set in the present invention bear longitudinal additional forces such as braking force, and the main beams at other piers can freely expand and contract longitudinally, solving the problem of large bending moments of bridge towers caused by temperature effects in long-span and long-span asymmetric structures.

The utility model provides a motor busbar, a motor assembly and a vehicle, and relates to the technical field of vehicle parts, the motor busbar comprises a busbar body and a temperature detection device fixing structure, and the temperature detection device fixing structure is arranged at one end, close to a stator core, of the busbar body. The busbar body is provided with a temperature detection device fixing structure, the temperature detection device fixing structure and the busbar body are of an integrated structure, a mounting groove is formed in the surface, facing the stator winding and corresponding to the coil, of the temperature detection device fixing structure, the mounting groove is used for mounting the temperature detection device, and the temperature detection device fixing structure is used for pressing the temperature detection device on the corresponding coil. The temperature detection device is pressed on a corresponding coil of the stator winding through the temperature detection device fixing structure, so that the temperature detection device is fixedly installed. Moreover, the temperature detection device fixing structure and the busbar body are designed into an integrated structure, so that the number of parts can be reduced, the installation cost of the temperature detection device is reduced, and the fixing reliability of the temperature detection device is improved.

The present application relates to the technical field of automobile parts, and particularly relates to a composite lightweight split type axle housing, which comprises a cast steel axle housing body, an aluminum split type rear cover, a temperature acquisition unit, an adjustable heat dissipation and flow guide assembly and a control unit. The cast steel axle housing body is provided with a main reducer installation cavity, and a connecting flange plate is arranged at a rear end maintenance opening; the aluminum split type rear cover is detachably connected with the connecting flange plate through bolts, and the outer surface is provided with longitudinal heat dissipation ribs. A sealing groove is formed in the end face of the connecting flange plate and a sealing gasket is embedded, and a sealing boss is correspondingly arranged on the inner side of the rear cover, and the sealing gasket is compressed to form a sealing structure. The temperature acquisition unit acquires oil temperature data inside the axle housing, and the control unit determines the vertical impact, parallel flow guide or folding angle position of the flow guide vane according to the oil temperature data and the oil temperature change rate, and performs adaptive heat dissipation control. The present application realizes lightweight combination of cast steel and aluminum alloy, and improves the heat dissipation efficiency in cooperation with the heat dissipation ribs and the active flow guide structure.

This invention belongs to the field of cryogenic pipeline sensor arrangement technology, and particularly relates to a temperature sensor arrangement structure and method for liquid nitrogen pipelines at the inlet and outlet of a cold box. The arrangement structure includes a temperature sensor, a cryogenic pipeline, an annular corrugated pipe, a protective pipe, and a cover plate. The protective pipe is welded and fixed to the cryogenic pipeline, which includes an outer pipe and an inner pipe. The temperature sensor passes through the outer and inner pipes and exits from the protective pipe. The cover plate has an injection port inside, and one end of the temperature sensor is provided with an adjustable connection structure. The temperature sensor exits the cover plate through the injection port. After adjusting the installation angle of the temperature sensor using the adjustable connection structure, the temperature sensor is sealed and fixed to the cover plate. One end of the annular corrugated pipe is welded and fixed to the bottom of the cover plate, and the other end is welded and fixed to the protective pipe. The annular corrugated pipe is used for length compensation of the temperature sensor under cold contraction. Compared with the prior art, this invention can further improve the accuracy and reliability of the measurement results.

The invention discloses a large-volume hydraulic concrete structure temperature stress and cracking risk calculation method, which comprises the following steps of: 1, constructing a finite element model of a hydraulic large-volume concrete structure, and simulating a layered pouring construction process of the structure according to a layered pouring construction organization scheme; 2, according to mechanical parameters and thermodynamic parameters of concrete adopted by the structure, a control equation of hydration temperature rise, heat conduction, convective heat transfer, water cooling and shrinkage creep of all layers of concrete in the pouring process is deduced, and boundary conditions and initial conditions such as foundation constraint and atmospheric temperature are applied; 3, aiming at the control equation and the initial boundary condition, compiling a subprogram by using a programming language, and carrying out coupling calculation, linear superposition and algebraic summation on the strain of shrinkage, creep and thermal expansion effects in the layered pouring process of the structure; and 4, calculating and outputting temperature stress and a time-varying rule of crack initiation and expansion caused by the temperature stress, analyzing and demonstrating a calculation result, and determining a position with the maximum structure cracking risk.

The application provides a kind of upper bearing type steel pipe arch installation monitoring positioning method, belongs to steel pipe arch installation monitoring positioning technical field, the method comprises the following steps: step 1: the overall temperature data of arch rib linear is monitored all-weather continuously by mathematical statistics and comparative analysis method;Step 2: the accuracy of primary control network is analyzed, and the accuracy meets the installation requirements;Step 3: the encryption control network is established, and the accuracy of encryption control network is optimized;Step 4: the automatic collection of arch rib linear three-dimensional coordinates is realized through encryption control network;Step 5: the collected data is transmitted, stored and displayed on cloud platform.The application realizes the automatic monitoring method of arch rib installation linear by laying encryption and accuracy analysis of arch bridge construction control network, and realizes the automatic monitoring of arch rib installation linear by taking high-precision independent control network as the benchmark and matching cloud platform, analyzes the influence of structural temperature change on arch rib three-dimensional linear by automatically collecting, storing and displaying monitoring data, realizes the automatic monitoring of arch bridge main arch linear, realizes high-precision detection, avoids deviation, and provides high-precision data support for steel pipe arch installation.

A structural temperature self-monitoring system based on a chiral structured shape memory polymer microporous plate, comprising a fixing apparatus, a chiral structured microporous plate, and a triboelectric nanogenerators set. Each chiral element of microporous plate is provided with a hexagonal cell and six chiral legs, and the microporous plate may occur specific deformation under certain conditions. The microporous plate is fixed on the fixed apparatus, and the triboelectric nanogenerators set comprises two lateral sliding mode triboelectric nanogenerators that are symmetrically distributed; the data of deformation of chiral structured microporous plate in converse directions is collected; and a voltage is emerged for measurement. The system can monitor the temperature of any portion of structure without an external power supply, and obtain the temperature data possessing both timeliness and accuracy under the condition of ensuring the integrity and representativeness of temperature data.

The invention relates to the technical field of temperature field simulation, in particular to a large-span warehouse structure sunlight temperature field simulation method and system. The method comprises the following steps: acquiring warehouse structure data to construct a warehouse model, and generating warehouse model data; warehouse environment temperature simulation data is acquired, thermal boundary condition and mechanical boundary condition division is performed on the basis of the warehouse environment temperature simulation data and the warehouse model data, warehouse thermal boundary-mechanical boundary condition data is generated, warehouse model constraint processing is performed on the warehouse model data, and constraint warehouse model data is generated; performing structure temperature heat conduction analysis in a warehouse construction stage and a warehouse operation stage, and transmitting the data to the constraint warehouse model for warehouse temperature field simulation and warehouse temperature field reaction characteristic analysis to generate warehouse temperature field reaction characteristic data; and transmitting the warehouse temperature field reaction characteristic data to a terminal to execute warehouse temperature field reaction characteristic feedback operation. According to the invention, warehouse temperature field simulation is realized.

The application discloses a kind of ceramic radome transient thermal stress fast calculation method along flight trajectory, comprising: determining calculation input, including the aerodynamic thermal environment of ceramic radome and the structure scheme to be evaluated;Set the circumferential discrete strategy of ceramic radome, to determine the multiple meridional plane of ceramic radome;Interpolation model is constructed to aerodynamic thermal environment, determines the most severe meridional plane of ceramic radome aerodynamic heating in flight;Build the two-dimensional feature structure model of ceramic radome transient heat transfer and thermal stress analysis, and determine the external contour line of two-dimensional feature structure model;The axial thermal response calculation interval of ceramic radome is constructed and interpolation calculation is carried out, and the aerodynamic thermal environment parameter of each flight time of external contour line is obtained;The heat transfer calculation grid division is carried out to two-dimensional feature structure model, and the structure transient temperature distribution of two-dimensional feature structure model is calculated;Based on the structure transient temperature distribution, calculate structure temperature gradient;Utilize structure temperature gradient to calculate the transient thermal stress distribution of ceramic radome.