CN111460609B - Extraction method and device for key temperature points on heating surface of part - Google Patents
Extraction method and device for key temperature points on heating surface of part Download PDFInfo
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Abstract
The embodiment of the invention provides a method and a device for extracting key temperature points on a heating surface of a part, wherein the method comprises the following steps: establishing a coordinate system of a shaping beam loading temperature field calculation model; generating a three-dimensional contour map of all given temperature points, and determining an extracted interval value of the key temperature points according to the width value of each contour line; and extracting key temperature points according to the distance value, the region with the sharp change of the contour line temperature and the regions with the highest and lowest temperatures. The method and the device for extracting the key temperature points on the heating surface of the part provided by the embodiment of the invention aim at extracting the key temperature points which can reflect the overall temperature distribution on the heating surface of the part from all given temperature data values in the case that a given temperature field on the heating surface of the part contains a large number of temperature values, so that the aims of simplifying the design difficulty, accelerating the design period and simplifying the workload can be achieved.
Description
Technical Field
The invention relates to the technical field of lasers, in particular to a method and a device for extracting key temperature points on a heating surface of a part.
Background
With the trend of high power density and high compactness of diesel engines, the problem of thermal damage to engine combustion chamber parts caused by high thermal load is increasingly raised. The thermal load test platform is an effective means for evaluating the thermal strength of the heated parts, and the thermal load test platform for the parts at present has heating modes such as fuel gas, high-frequency induction, quartz lamps and the like. However, the conventional heat load test method of the heating system is still imperfect in effectively evaluating the heat intensity of the heated parts, and it is necessary to search for a new heat load test method.
Because the laser has the characteristic of controllable time, space energy and power density, the application of the laser as a heat source to load the heating surface of the part for carrying out the heat load test research is possible. The laser beam with specific light intensity distribution is enabled to act on the heating surface of the part through shaping the original laser beam, and the temperature distribution generated on the heating surface meets the requirement of a thermal load test through the thermal interaction of the laser and the heating surface of the part. The key of the research of the shaping laser beam thermal load test is that the thermal load temperature field distribution of the heating surface of the part required by the test is simulated simply, controllably, efficiently and accurately. In the structural development stage of the component, the temperature distribution of the heating surface of the component required by the thermal load test, which is usually the result of calculating the temperature field of the structural simulation design, contains a large number of temperature data values of model nodes, and if all the temperature data are used as the target temperature field, a great deal of time and workload are obviously required to be consumed when the temperature field generated by loading the shaping beam onto the heating surface of the component is consistent with the target temperature field, and the design difficulty is increased.
In the shaping laser beam thermal load test, given temperature field distribution of the heating surface of the component is taken as a target temperature field, and the temperature field distribution generated by loading the shaping laser beam on the heating surface of the component must be consistent with the target temperature field. When the target temperature field is a calculation result obtained by simulating the structure of the engine part, a large amount of temperature data volume brings huge calculation amount and high difficulty value to the test design.
Disclosure of Invention
The embodiment of the invention provides a method and a device for extracting key temperature points on a heating surface of a part, which are used for solving the technical problems in the prior art.
In order to solve the above technical problems, on one hand, an embodiment of the present invention provides a method for extracting a key temperature point on a heating surface of a component, including:
Establishing a coordinate system of a shaping beam loading temperature field calculation model;
generating a three-dimensional contour map of all given temperature points, and determining an extracted interval value of the key temperature points according to the width value of each contour line;
And extracting key temperature points according to the distance value, the region with the sharp change of the contour line temperature and the regions with the highest and lowest temperatures.
Further, the establishing a coordinate system of the shaping beam loading temperature field calculation model specifically comprises the following steps:
if the temperature distribution of the heating surface of the given part is calculated data obtained after structural simulation, selecting a default coordinate system of the calculated data as a coordinate system of a shaping beam loading temperature field calculation model.
Further, the establishing a coordinate system of the shaping beam loading temperature field calculation model specifically comprises the following steps:
If the temperature distribution of the heating surface of the given part is the temperature data of each point on the heating surface of the actually measured part, a coordinate system is determined according to the structural characteristics of the given part.
Further, the determining a coordinate system according to the structural characteristics of the given component specifically includes:
and taking the center of the given part as the origin of coordinates, so that the real measurement points fall on X and Y coordinate axes as much as possible, and determining a coordinate system.
Further, the extracting of the key temperature points according to the interval value, the region with the severe change of the contour line temperature and the regions with the highest and lowest temperatures specifically includes:
the temperature point of the highest temperature value and the temperature point of the lowest temperature value are taken as key temperature points.
Further, the extracting of the key temperature points according to the interval value, the region with the severe change of the contour line temperature and the regions with the highest and lowest temperatures specifically includes:
and taking the temperature point, of which the variable between the temperature point and the adjacent temperature point in the three-dimensional contour map is larger than a preset threshold value, as a key temperature point.
Further, after extracting the key temperature points according to the interval value, the region with the sharp change of the contour line temperature and the regions with the highest and lowest temperatures, the method further comprises:
Drawing a three-dimensional contour map according to the temperature values of all the currently extracted key temperature points, comparing the three-dimensional contour map with the three-dimensional contour map of all the given temperature points, and taking the temperature points with the difference value of the temperature points in the two contour maps being larger than a second preset threshold value as complementary key temperature points.
On the other hand, an embodiment of the present invention provides an extraction device for key temperature points on a heating surface of a component, including:
the building module is used for building a coordinate system of the shaping beam loading temperature field calculation model;
The generating module is used for generating a three-dimensional contour map of all the temperature points and determining the distance value extracted by the key temperature points according to the width value of each contour line;
And the extraction module is used for extracting the key temperature points according to the interval value, the region with the severe change of the contour line temperature and the regions with the highest and lowest temperatures.
In still another aspect, an embodiment of the present invention provides an electronic device, including: the computer program comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the steps of the method when executing the computer program.
In yet another aspect, embodiments of the present invention provide a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the above-described method.
The method and the device for extracting the key temperature points on the heating surface of the part provided by the embodiment of the invention can be used for extracting the key temperature points which can reflect the overall temperature distribution on the heating surface of the part from all temperature data values aiming at the condition that the temperature field of the heating surface of the given part contains a large number of temperature values, so that the aims of simplifying the design difficulty, accelerating the design period and simplifying the workload can be achieved.
Drawings
FIG. 1 is a schematic diagram of an extraction method of key temperature points on a heating surface of a component according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an extraction device for key temperature points on a heating surface of a component according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
At present, a novel engine part for shaping laser beam thermal load test needs to be developed, and the thermal load test of the relevant part is expected to be developed in the structural development stage of the engine, namely, under the condition that the engine is not used under the actual working condition, and the purposes of correcting the structural design of the engine and the like are achieved through feedback of test results. In this case, most of the temperature distribution of the heating surface of the component in the thermal load test as the target temperature field is based on the heating surface temperature simulation result obtained after the component structure simulation, and includes a large number of temperature data values of the model nodes. How to utilize and process these temperature data values as design input conditions for shaping beam distribution in laser thermal load test, and develop subsequent shaping optical element designs, this section is not described or reported in detail.
In the shaping laser beam thermal load test, given temperature field distribution of the heating surface of the component is taken as a target temperature field, and the temperature field distribution generated by loading the shaping laser beam on the heating surface of the component must be consistent with the target temperature field. When the target temperature field is a calculation result obtained by simulating the structure of the engine part, a large amount of temperature data volume brings huge calculation amount and high difficulty value to the test design.
In order to solve the technical problems, the method for extracting the key temperature points capable of reflecting the overall temperature distribution on the heating surface of the part from all the temperature data values can achieve the purposes of simplifying design difficulty, accelerating design period and simplifying workload.
According to the extraction method of the key temperature points on the heating surface of the part, the temperature distribution of the key temperature points can reflect the temperature field distribution of all the temperature points, the key temperature points are used as target temperature fields to carry out simulation calculation of the temperature fields generated by loading the shaping laser beams on the heating surface of the part, and finally the temperature fields generated by loading the shaping laser beams with specific light intensity distribution are consistent with the target temperature fields.
Fig. 1 is a schematic diagram of an extraction method of a critical temperature point on a heating surface of a component according to an embodiment of the present invention, and as shown in fig. 1, an embodiment of the present invention provides an extraction method of a critical temperature point on a heating surface of a component, where an execution body is an extraction device of a critical temperature point on a heating surface of a component. The method comprises the following steps:
And step S101, establishing a coordinate system of a shaping beam loading temperature field calculation model.
Specifically, a coordinate system is first established, for example, if the temperature distribution of the heating surface of the given component is calculated data obtained after structural simulation, a default coordinate system of the data can be selected as a coordinate system of a shaping beam loading temperature field calculation model; if the temperature data of each point on the heated surface of the part is actually measured, selecting a coordinate system according to the structural characteristics of the part, and if the center of the part is generally taken as the origin of coordinates, making each real point fall on X and Y coordinate axes as far as possible.
And S102, generating a three-dimensional contour map of all given temperature points, and determining the extracted interval value of the key temperature points according to the width value of each contour line.
Specifically, after the coordinate system is established, the temperature points of the highest and lowest temperature values are found, the position coordinates and the corresponding temperature values thereof are determined, and the position coordinates and the corresponding temperature values are selected as key temperature points.
Drawing a three-dimensional contour map of all given temperature points, and determining the extracted interval value of the key temperature points according to the width value of each contour line.
And step S103, extracting key temperature points according to the distance value, the region with the sharp change of the contour line temperature and the regions with the highest and lowest temperatures.
Specifically, after the pitch value of the key temperature point extraction is determined, the key temperature point extraction is performed on the X-axis and the Y-axis with this pitch value centered on the origin of coordinates.
The method for extracting the key temperature points on the heating surface of the part, provided by the embodiment of the invention, aims at the condition that the temperature field of the heating surface of the given part contains a large number of temperature values, and provides a method for extracting the key temperature points which can reflect the overall temperature distribution on the heating surface of the part from all the temperature data values, so that the aims of simplifying the design difficulty, accelerating the design period and simplifying the workload can be achieved.
Based on any one of the above embodiments, further, the establishing a coordinate system of the shaping beam loading temperature field calculation model specifically includes:
if the temperature distribution of the heating surface of the given part is calculated data obtained after structural simulation, selecting a default coordinate system of the calculated data as a coordinate system of a shaping beam loading temperature field calculation model.
Specifically, in the embodiment of the present invention, if the temperature distribution of the heating surface of the given component is calculated data obtained after the structural simulation, a default coordinate system of the data may be selected as a coordinate system of the shaping beam loading temperature field calculation model.
The method for extracting the key temperature points on the heating surface of the part, provided by the embodiment of the invention, aims at the condition that the temperature field of the heating surface of the given part contains a large number of temperature values, and provides a method for extracting the key temperature points which can reflect the overall temperature distribution on the heating surface of the part from all the temperature data values, so that the aims of simplifying the design difficulty, accelerating the design period and simplifying the workload can be achieved.
Based on any one of the above embodiments, further, the establishing a coordinate system of the shaping beam loading temperature field calculation model specifically includes:
If the temperature distribution of the heating surface of the given part is the temperature data of each point on the heating surface of the actually measured part, a coordinate system is determined according to the structural characteristics of the given part.
Specifically, in the embodiment of the invention, if the temperature data of each point on the heated surface of the component is actually measured, the coordinate system is selected according to the structural characteristics of the component.
The method for extracting the key temperature points on the heating surface of the part, provided by the embodiment of the invention, aims at the condition that the temperature field of the heating surface of the given part contains a large number of temperature values, and provides a method for extracting the key temperature points which can reflect the overall temperature distribution on the heating surface of the part from all the temperature data values, so that the aims of simplifying the design difficulty, accelerating the design period and simplifying the workload can be achieved.
Based on any one of the above embodiments, further, the determining a coordinate system according to the structural characteristics of the given component specifically includes:
and taking the center of the given part as the origin of coordinates, so that the real measurement points fall on X and Y coordinate axes as much as possible, and determining a coordinate system.
Specifically, in the embodiment of the invention, the center of a given part is taken as the origin of coordinates, so that each real measurement point falls on X and Y coordinate axes as much as possible, and a coordinate system is determined.
The method for extracting the key temperature points on the heating surface of the part, provided by the embodiment of the invention, aims at the condition that the temperature field of the heating surface of the given part contains a large number of temperature values, and provides a method for extracting the key temperature points which can reflect the overall temperature distribution on the heating surface of the part from all the temperature data values, so that the aims of simplifying the design difficulty, accelerating the design period and simplifying the workload can be achieved.
Based on any one of the above embodiments, further, the extracting the key temperature points according to the pitch value, the region of severe change of the contour line temperature, and the regions of the highest and lowest temperatures specifically includes:
the temperature point of the highest temperature value and the temperature point of the lowest temperature value are taken as key temperature points.
Specifically, in the embodiment of the invention, the temperature points with the highest and lowest temperature values are searched, the position coordinates and the corresponding temperature values are determined, and the position coordinates and the corresponding temperature values are selected as key temperature points.
The method for extracting the key temperature points on the heating surface of the part, provided by the embodiment of the invention, aims at the condition that the temperature field of the heating surface of the given part contains a large number of temperature values, and provides a method for extracting the key temperature points which can reflect the overall temperature distribution on the heating surface of the part from all the temperature data values, so that the aims of simplifying the design difficulty, accelerating the design period and simplifying the workload can be achieved.
Based on any one of the above embodiments, further, the extracting the key temperature points according to the pitch value, the region of severe change of the contour line temperature, and the regions of the highest and lowest temperatures specifically includes:
and taking the temperature point, of which the variable between the temperature point and the adjacent temperature point in the three-dimensional contour map is larger than a preset threshold value, as a key temperature point.
Specifically, in the embodiment of the invention, at a position where the contour line changes severely, a temperature point at the position is selected as a key temperature point.
The method for extracting the key temperature points on the heating surface of the part, provided by the embodiment of the invention, aims at the condition that the temperature field of the heating surface of the given part contains a large number of temperature values, and provides a method for extracting the key temperature points which can reflect the overall temperature distribution on the heating surface of the part from all the temperature data values, so that the aims of simplifying the design difficulty, accelerating the design period and simplifying the workload can be achieved.
Based on any one of the foregoing embodiments, further, after the extracting the key temperature points according to the pitch value, the region of severe change of the contour temperature, and the regions of highest and lowest temperatures, the method further includes:
Drawing a three-dimensional contour map according to the temperature values of all the currently extracted key temperature points, comparing the three-dimensional contour map with the three-dimensional contour map of all the given temperature points, and taking the temperature points with the difference value of the temperature points in the two contour maps being larger than a second preset threshold value as complementary key temperature points.
Specifically, in the embodiment of the invention, a three-dimensional contour map is drawn according to the temperature values of all the key temperature points extracted above, and is compared with the three-dimensional contour map given all the temperature points. And finding out a position with a larger difference in the two contour maps, and selecting a temperature point at the position as a key temperature point.
And adjusting the positions of key points nearby the range by observing the range of the region with larger temperature difference until the three-dimensional contour map drawn by the temperature values of the extracted key points is consistent with the change trend of the three-dimensional contour map of all given temperature points, and indicating that the selection of the key temperature points meets the requirement.
Through the steps, the extraction of the key temperature points from all the temperature data values can be completed, the temperature distribution of the key temperature points is used for replacing the temperature distribution of all the temperature points to serve as a target temperature field, the simulation calculation of the temperature field under the loading of the shaping beam for the subsequent laser thermal load test is carried out, and the specific light intensity distribution of the shaping beam is determined.
The method for extracting the key temperature points on the heating surface of the part, provided by the embodiment of the invention, aims at the condition that the temperature field of the heating surface of the given part contains a large number of temperature values, and provides a method for extracting the key temperature points which can reflect the overall temperature distribution on the heating surface of the part from all the temperature data values, so that the aims of simplifying the design difficulty, accelerating the design period and simplifying the workload can be achieved.
Any of the above embodiments will be described below with a specific example:
taking the temperature field distribution of the heating surface obtained by the structural simulation of a piston as an example, the temperature field distribution comprises 3051 temperature points. If all 3051 temperature points are adopted as the target temperature field, the large amount of temperature data can bring huge workload and design difficulty to the design of loading temperature distribution of the subsequent shaping beam. In the practical shaping laser beam thermal load test design, the aim of reflecting the temperature field distribution of the whole piston surface can be achieved by only extracting key temperature points of the temperature distribution of the heating surface of the piston.
The coordinate system is selected, namely the default coordinate system of all temperature point data, and the origin of the default coordinate system is the center position of the piston face. The positions of the highest temperature value and the lowest temperature value are determined, and the temperature values thereof are 649.8K and 446.8K, respectively. From the width values of the various contours, the pitch values extracted from the critical temperature points, here chosen to be 25mm, can be determined. Then starting from the origin, the temperature points at approximately every 25mm on the X-axis and the Y-axis are selected as critical temperature points. And at a position where the contour line is drastically changed, for example, a position near the coordinates (-75 mm,25 mm), a temperature point near this position is taken as a key temperature point. And drawing a three-dimensional contour map of the temperature field according to all the extracted key temperature points, comparing the three-dimensional contour map with the temperature field distribution of all the given temperature points, focusing on the position with larger difference between the three-dimensional contour map and the given temperature field distribution, and finally extracting 23 key temperature points from 3051 temperature values, wherein the three-dimensional contour map of the temperature field distribution is drawn.
By contrast, the temperature distribution of 24 key target points on the heating surface of the piston is consistent with the temperature distribution of 3051 data points on the whole piston surface, and the temperature distribution on the whole piston heating surface can be reflected. Therefore, in summary, in the simulation calculation of the loading temperature field of the specific light intensity distribution of the shaped light beam, only the temperature distribution of the key temperature point on the heated surface of the piston is required to be used as the target temperature field, and when the calculation result is consistent with the 24-point target temperature field, the shaped light beam of the specific light intensity distribution is the shaped light beam required by the thermal load test.
Based on any of the above embodiments, fig. 2 is a schematic diagram of an extraction device for a key temperature point on a heating surface of a part according to an embodiment of the present invention, and as shown in fig. 2, the extraction device for a key temperature point on a heating surface of a part according to an embodiment of the present invention includes an establishing module 201, a generating module 202, and an extracting module 203, where:
The establishing module 201 is used for establishing a coordinate system of the shaping beam loading temperature field calculation model; the generating module 202 is configured to generate a three-dimensional contour map of all the temperature points, and determine an extracted interval value of the key temperature points according to the width value of each contour line; the extraction module 203 is configured to extract the key temperature points according to the distance value, the region with the sharp change of the contour line temperature, and the regions with the highest and lowest temperatures.
The embodiment of the invention provides an extraction device for key temperature points on a heating surface of a part, which is used for executing the method described in any one of the embodiments, and specific steps for executing the method described in the certain embodiment by the device provided by the embodiment are the same as those of the corresponding embodiment, and are not repeated here.
The device for extracting the key temperature points on the heating surface of the part provided by the embodiment of the invention provides a method for extracting the key temperature points capable of reflecting the overall temperature distribution on the heating surface of the part from all temperature data values, aiming at the situation that the temperature field of the heating surface of the given part contains a large number of temperature values, and can achieve the aims of simplifying the design difficulty, accelerating the design period and simplifying the workload.
Fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, as shown in fig. 3, where the electronic device includes: processor 301, communication interface (Communications Interface) 302, memory 303, and communication bus 304, wherein processor 301, communication interface 302, and memory 303 communicate with each other via communication bus 304. Processor 301 and memory 302 communicate with each other via bus 303. The processor 301 may call logic instructions in the memory 303 to perform the following method:
Establishing a coordinate system of a shaping beam loading temperature field calculation model;
generating a three-dimensional contour map of all given temperature points, and determining an extracted interval value of the key temperature points according to the width value of each contour line;
And extracting key temperature points according to the distance value, the region with the sharp change of the contour line temperature and the regions with the highest and lowest temperatures.
Further, the logic instructions in the memory described above may be implemented in the form of software functional units and stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Further, embodiments of the present invention provide a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, are capable of performing the steps of the method embodiments described above, for example comprising:
Establishing a coordinate system of a shaping beam loading temperature field calculation model;
generating a three-dimensional contour map of all given temperature points, and determining an extracted interval value of the key temperature points according to the width value of each contour line;
And extracting key temperature points according to the distance value, the region with the sharp change of the contour line temperature and the regions with the highest and lowest temperatures.
Further, embodiments of the present invention provide a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method embodiments described above, for example, including:
Establishing a coordinate system of a shaping beam loading temperature field calculation model;
generating a three-dimensional contour map of all given temperature points, and determining an extracted interval value of the key temperature points according to the width value of each contour line;
And extracting key temperature points according to the distance value, the region with the sharp change of the contour line temperature and the regions with the highest and lowest temperatures.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The extraction method of the key temperature points on the heating surface of the engine part is characterized by comprising the following steps of:
Establishing a coordinate system of a shaping beam loading temperature field calculation model;
generating a three-dimensional contour map of all given temperature points, and determining an extracted interval value of the key temperature points according to the width value of each contour line;
Extracting key temperature points on the heating surface of the engine part according to the interval value, the severe change region of the contour line temperature and the highest and lowest temperature regions;
Drawing a three-dimensional contour map according to the temperature values of all the currently extracted key temperature points, comparing the three-dimensional contour map with the three-dimensional contour map of all the given temperature points, and taking the temperature points with the difference value of the temperature points in the two contour maps being larger than a second preset threshold value as complementary key temperature points.
2. The method for extracting key temperature points on a heated surface of an engine component according to claim 1, wherein the establishing a coordinate system of a shaping beam loading temperature field calculation model specifically comprises:
if the temperature distribution of the heating surface of the given part is calculated data obtained after structural simulation, selecting a default coordinate system of the calculated data as a coordinate system of a shaping beam loading temperature field calculation model.
3. The method for extracting key temperature points on a heated surface of an engine component according to claim 1, wherein the establishing a coordinate system of a shaping beam loading temperature field calculation model specifically comprises:
If the temperature distribution of the heating surface of the given part is the temperature data of each point on the heating surface of the actually measured part, a coordinate system is determined according to the structural characteristics of the given part.
4. A method for extracting critical temperature points on a heated surface of an engine component according to claim 3, wherein the determining a coordinate system according to the structural characteristics of the given component specifically comprises:
and taking the center of the given part as the origin of coordinates, so that the real measurement points fall on X and Y coordinate axes as much as possible, and determining a coordinate system.
5. The method for extracting key temperature points on the heating surface of the engine part according to claim 1, wherein the extracting of the key temperature points on the heating surface of the engine part is performed according to the interval value, the region with severe change of the contour temperature and the highest and lowest temperature regions, and specifically comprises the following steps:
the temperature point of the highest temperature value and the temperature point of the lowest temperature value are used as key temperature points on the heating surface of the engine part.
6. The method for extracting key temperature points on the heating surface of the engine part according to claim 1, wherein the extracting of the key temperature points on the heating surface of the engine part is performed according to the interval value, the region with severe change of the contour temperature and the highest and lowest temperature regions, and specifically comprises the following steps:
And taking the temperature point, of which the variable between the temperature point and the adjacent temperature point in the three-dimensional contour map is larger than a preset threshold value, as a key temperature point on the heating surface of the engine part.
7. An extraction device of key temperature points on a heating surface of an engine part is characterized by comprising:
the building module is used for building a coordinate system of the shaping beam loading temperature field calculation model;
the generating module is used for generating a three-dimensional contour map of all given temperature points and determining the distance value extracted by the key temperature points according to the width value of each contour line;
The extraction module is used for extracting key temperature points on the heating surface of the engine part according to the interval value, the contour line temperature severe change area and the highest and lowest temperature areas; drawing a three-dimensional contour map according to the temperature values of all the currently extracted key temperature points, comparing the three-dimensional contour map with the three-dimensional contour map of all the given temperature points, and taking the temperature points with the difference value of the temperature points in the two contour maps being larger than a second preset threshold value as complementary key temperature points.
8. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor, when executing the computer program, performs the steps of the method for extracting key temperature points on the heated surface of an engine component according to any one of claims 1 to 6.
9. A non-transitory computer readable storage medium having stored thereon a computer program, characterized in that the steps of the method for extracting key temperature points on the heated surface of an engine component according to any of claims 1 to 6 are implemented when said computer program is executed by a processor.
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