Evaluation method and system for corrosion life of launching platform based on digital twinning

Abstract

The invention provides a method and a system for evaluating the corrosion life of a launching platform based on digital twinning, and solves the technical problem that existing corrosion monitoring is lack of full-life-cycle perfect evaluation capability for internal and external influence factors of a coastal launching platform. The method comprises the following steps: fusing a small-scale material corrosion model, a small-scale structure corrosion model and a large-scale structure mechanical-chemical coupling environment corrosion model in a corrosion dynamic process by combining a full-scale launching platform finite element model to form a digital twinborn model reflecting the corrosion dynamic process; the method comprises the following steps: acquiring field monitoring data, quantifying a data dimension space of corrosion characteristics through a data mining technology, and mapping the data dimension space and an expression dimension of a representation object in a digital twinborn model to form evaluation data of the corrosion life of the launching platform. And forming corrosion life evaluation. Therefore, the safety, reliability and durability of the coastal carrier rocket launching platform and important facilities thereof are improved, and the maintenance workload and economic cost in the service period are reduced.

Description

Technical Field

[0001] The present invention relates to the field of data simulation technology, and in particular to a method and system for evaluating the corrosion life of a launch platform based on digital twins. Background Art

[0002] The offshore launch platform is susceptible to rust and corrosion due to the influence of the marine environment. The existing technology uses a distributed monitoring and detection system formed by field sensors to collect environmental information and body information, and makes judgments on the field information based on the preset physical and chemical parameter thresholds of the preset points to form a platform health assessment. The discrete information on site cannot effectively reveal the multi-factor corrosion law of the marine environment on the platform, and cannot form an accurate assessment and prediction of the overall corrosion life of the platform.

[0003] In the existing technology, digital twin technology can be based on physical intrinsic models, accumulate a large amount of service performance data through basic experiments and research literature, and combine with advanced and reliable monitoring and detection systems and big data mining technology to form the core of the material service safety digital twin system. It can realize multi-disciplinary, multi-physical quantity, multi-dimensional, and multi-probability dynamic process simulation to carry out full life cycle simulation of engineering materials and equipment.

[0004] In order to address the multi-factor corrosion problem of the launch platform caused by the marine corrosion climate, we can use the digital twin technology to establish a targeted corrosion life assessment model, targeting the matrix factors and environmental factors of corrosion, and construct a digital twin system for the coastal launch platform that is oriented to corrosion phenomena. Summary of the invention

[0005] In view of the above problems, an embodiment of the present invention provides a launch platform corrosion life assessment method and system based on digital twins to solve the technical problem that existing corrosion inspection and monitoring lacks the ability to fully assess the internal and external influencing factors of coastal launch platforms throughout the entire life cycle.

[0006] The launch platform corrosion life assessment method based on digital twin according to an embodiment of the present invention includes:

[0007] Obtain the electrochemical experimental data of the main application materials of the launch platform, and form a material corrosion model of the small-scale corrosion kinetic process based on the experimental data;

[0008] Obtain the experimental data of the main structural parts of the launch platform in the natural environment exposure test and indoor simulated accelerated test, and form a structural corrosion model of the mesoscale corrosion kinetic process based on the experimental data;

[0009] According to the scaled structure of the launch platform, in-situ environmental experimental data and platform mechanical performance experimental data are collected in the environmental-load simulation test, and a structural mechanics-chemical coupled environmental corrosion model of the large-scale corrosion dynamics process is formed based on the experimental data;

[0010] A digital twin model that reflects the corrosion dynamics process is formed by integrating the material corrosion model, structural corrosion model, and structural mechanics-chemistry coupled environmental corrosion model with the full-scale launch platform finite element model.

[0011] The on-site monitoring and detection data is obtained and the data dimension space of the corrosion characteristics is quantified through data mining technology. The data dimension space is mapped with the expression dimension of the object in the digital twin model to form the evaluation data of the corrosion life of the launch platform.

[0012] In one embodiment of the present invention, it further includes:

[0013] The on-site information is processed according to the digital twin model to form a comprehensive assessment of the launch platform.

[0014] In one embodiment of the present invention, the comprehensive evaluation includes:

[0015] Based on the accumulation of on-site monitoring and testing data, the digital twin model is used to evaluate the severity of the environment during the effective period;

[0016] Based on the accumulation of on-site monitoring and testing data, the digital twin model is used to analyze the corrosion details of key parts within the effective period;

[0017] Based on the accumulation of on-site monitoring and testing data, the digital twin model is used to evaluate the corrosion level of the platform surface within the effective period;

[0018] Based on the accumulation of on-site monitoring and detection data, the evaluation effect of the digital twin model is verified within an effective period, and the digital twin model is iteratively optimized based on the verification results.

[0019] In one embodiment of the present invention, the evaluation of the environmental severity level within the effective period includes:

[0020] Use the digital twin model to calculate the flow field of wind direction and speed data to determine the environmental heat transfer coefficient;

[0021] The temperature field of the launch platform is formed by the ambient temperature and relative humidity, the solar radiation level and the cloud cover coefficient combined with the ambient heat transfer coefficient;

[0022] The relative humidity field is formed based on the surface temperature of the launch platform combined with the temperature field;

[0023] Calculate the condensation state based on the environmental salt deposition data and environmental pH data combined with the relative humidity field;

[0024] Evaluate the severity of the environment based on the condensation status.

[0025] In one embodiment of the present invention, the detailed analysis of corrosion of key parts within the effective period includes:

[0026] The digital twin model is used to determine the variation pattern of the liquid film thickness on the launch platform surface according to the condensation state during the effective period;

[0027] Corrosion prediction of key locations of the launch platform is carried out based on the variation law of liquid film thickness;

[0028] Based on the corrosion prediction, an analytical analysis of the corrosion-mechanical state of the key positions of the platform is established.

[0029] In one embodiment of the present invention, the evaluation of the corrosion level of the platform surface within the effective period includes:

[0030] The digital twin model is used to determine the corrosion rate process of the platform surface based on the variation law of the liquid film thickness and basic electrochemical test data;

[0031] The corrosion level of each part of the launch platform within the effective period is evaluated according to the corrosion rate process law.

[0032] In one embodiment of the present invention, the verification of the evaluation effect of the digital twin model within the effective period includes:

[0033] The corrosion rate, surface wetting time, and platform temperature and humidity predicted by the digital twin model within a certain period of time are verified based on the on-site monitoring data within the certain period of time, and the corresponding components of the digital twin model are iteratively optimized based on the effectiveness error.

[0034] The launch platform corrosion life assessment system based on digital twin according to an embodiment of the present invention includes:

[0035] A memory, used to store program codes in the processing of the launch platform corrosion life assessment method based on digital twins according to any one of claims 1 to 7;

[0036] A processor is used to execute the program code.

[0037] The launch platform corrosion life assessment system based on digital twin according to an embodiment of the present invention includes:

[0038] Small-scale modeling device, used to obtain electrochemical experimental data of the main application materials of the launch platform, and form a material corrosion model of the small-scale corrosion kinetic process based on the experimental data;

[0039] Mesoscale modeling device, used to obtain experimental data of the main structural parts of the launch platform in natural environment exposure tests and indoor simulated accelerated tests, and form a structural corrosion model of the mesoscale corrosion dynamics process based on the experimental data;

[0040] Large-scale modeling device, used to collect in-situ environmental experimental data and platform mechanical performance experimental data in the environmental-load simulation test according to the scaled structure of the launch platform, and form a structural mechanics-chemical coupled environmental corrosion model of the large-scale corrosion dynamics process according to the experimental data;

[0041] A twin model modeling device is used to form a digital twin model reflecting the corrosion dynamics process based on the material corrosion model, the structural corrosion model and the structural mechanics-chemistry coupled environmental corrosion model combined with the full-scale launch platform finite element model;

[0042] The data dimension mapping device is used to obtain the data dimension space of corrosion characteristics of on-site monitoring data through data mining technology, and map the data dimension space with the expression dimension of the object represented in the digital twin model to form the evaluation data of the corrosion life of the launch platform.

[0043] In one embodiment of the present invention, it further includes:

[0044] It is accompanied by a two-way evaluation device, which is used to process on-site information according to the digital twin model to form a comprehensive evaluation of the launch platform.

[0045] The launch platform corrosion life assessment method and system based on digital twins in the embodiment of the present invention focuses on the multi-factor corrosion problem of the marine corrosion climate on the launch platform. It combines the historical environmental spectrum collection of the launch site, the actual measurement of the on-site service working condition environment, the multi-scale laboratory corrosion characteristic experiment and the full-scale simulation of the complex physical field. Through the study and analysis of the natural and working environment boundaries and characterization parameters of the components in different parts, a set of technical methods that can more accurately evaluate the environmental adaptability of the launch platform is formed, and the evaluation and corrosion life prediction method of the corrosion severity level of the sea-based launch platform under the interaction of multiple environmental factors is constructed. Thereby improving the safety, reliability and durability of the sea-based launch platform and its important facilities, and reducing the workload and economic cost of maintenance during the service period. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 Shown is a flow chart of a method for evaluating the corrosion life of a launch platform based on digital twins according to an embodiment of the present invention.

[0047] Figure 2 Shown is a schematic diagram of a technical route for corrosion life assessment of a launch platform based on the concept of digital twins in a method for corrosion life assessment of a launch platform based on digital twins according to an embodiment of the present invention.

[0048] Figure 3 The figure shows a specific application diagram of a launch platform corrosion life assessment method based on digital twin according to an embodiment of the present invention for evaluating the corrosion resistance life of a launch platform.

[0049] Figure 4 Shown is a schematic diagram of the architecture of a launch platform corrosion life assessment system based on digital twins according to an embodiment of the present invention. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the present invention clearer and more understandable, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] A method for evaluating the corrosion life of a launch platform based on digital twins according to an embodiment of the present invention is as follows: Figure 1 As shown. Figure 1 In this embodiment, the present invention includes:

[0052] Step 100: Obtain electrochemical experimental data of the main application materials of the launch platform, and form a material corrosion model of the small-scale corrosion kinetic process based on the experimental data.

[0053] The main application materials refer to the material types of basic assemblies such as profiles and components used to build the launch platform. The electrochemical process experiments of the metal matrix of the material under the influence of environmental factors are carried out through the test pieces of the main application materials. The evolution law of the application material in the corrosion dynamics process is obtained through the experimental data of the self-corrosion phenomenon of the metal matrix under the influence of environmental factors such as water vapor, salt spray and temperature. According to the evolution law, a material corrosion model for quantifying the corrosion dynamics process, as well as the parameter content and adjustment range of the model are formed.

[0054] Step 200: Acquire experimental data of the main structural components of the launch platform in natural environment exposure tests and indoor simulated accelerated tests, and form a structural corrosion model of the mesoscale corrosion kinetic process based on the experimental data.

[0055] The main components include but are not limited to blind holes, flanges, bellows and other connecting structural parts. According to the results of basic research, the galvanic and gap effects between the contact interfaces of structural parts are prone to electrochemical corrosion. By placing the connecting structures of structural parts in natural exposure environments and indoor accelerated simulation environments to form experimental data of electrocorrosion phenomena, the evolution law of structural parts in the corrosion dynamics process is obtained, and a structural corrosion model for quantifying the corrosion dynamics process and the parameter content and adjustment range of the model are formed according to the evolution law. Experimental data include but are not limited to literature data, historical data and simulation process experimental data.

[0056] Step 300: In-situ environmental experimental data and platform mechanical performance experimental data are collected in an environmental-load simulation test according to the scaled-down structure of the launch platform, and a structural mechanics-chemical coupled environmental corrosion model of a large-scale corrosion kinetic process is formed according to the experimental data.

[0057] The scaled structure of the launch platform can proportionally reflect the rigidity characteristics and load deformation characteristics of the real launch platform. The scaled structure can also adopt the same anti-corrosion measures as the launch platform to reflect the overall corrosion resistance level of the launch platform. By placing the scaled structure in a simulated or real experimental environment to form a diversity of environmental test data, the evolution law of the corrosion dynamics process of the scaled structure in the process of load state change is obtained, and the structural mechanics-chemical coupling environmental corrosion model and the parameter setting of the model are formed according to the evolution law to quantify the corrosion dynamics process. The structural mechanics-chemical coupling environmental corrosion model can reflect the influence trend of environmental factors such as temperature and humidity, wetting time, and the deposition of corrosive substances in the gas phase on the surface when the launch platform is controlled and stressed, and the subsequent changes in wetting time and corrosion behavior caused by environmental factors on the overall scaled structure and protective measures. Experimental data include but are not limited to literature data, historical data and electrochemical process experimental data.

[0058] Step 400: A digital twin model reflecting the corrosion dynamics process is formed by integrating the material corrosion model, the structural corrosion model and the structural mechanics-chemistry coupled environmental corrosion model with the full-scale launch platform finite element model.

[0059] The material corrosion data model, the structural corrosion data model or the structural mechanics-chemical coupling environmental corrosion model can be a model set, which is a data model set for the corrosion characteristics, corrosion state and influencing factors of materials, anti-corrosion measures and assembly processes at the same scale. It can be understood by those skilled in the art that the real physical system (geometry and load conditions) can be simulated by mathematical approximation through finite element analysis, and a finite number of unknown quantities can be used to approximate the real system state of infinite unknown quantities. By forming a finite element model of the full-scale launch platform, a simulation of the interactive state of the environment in which the launch platform is located and the main structure is established. By integrating the small, medium and large-scale material corrosion data models, the local structure corrosion data model and the structural mechanics-chemical coupling environmental corrosion model with the launch platform finite element model, a digital twin model that maps the corrosion dynamics process of different scales and dimensions is formed.

[0060] Step 500: Obtain on-site monitoring data and quantify the data dimension space of corrosion characteristics through data mining technology. Map the data dimension space with the expression dimension of the object in the digital twin model to form evaluation data of the corrosion life of the launch platform.

[0061] The on-site monitoring and detection data obtains the real-time status of the platform's environment and key positions through distributed monitoring and detection sensors deployed on the real launch platform. The monitoring and detection data has differences in location, frequency, physical and chemical information type, including but not limited to wind speed and direction, temperature and humidity, solar radiation, cloud cover, platform surface temperature and humidity, platform surface salt deposition and pH, wetting time, corrosion type, corrosion rate and other performance data. Combined with the dimensional definition space of the corrosion characteristics formed in the research process of material corrosion, the monitoring and detection data is mapped to the feature dimension to form a data dimension space using data mining technology. Then, the data dimension space is mapped to the expression dimension of the digital twin model representation object to form an evaluation basis for the corrosion life of the launch platform. The representation objects include but are not limited to entity objects, environmental objects, composite objects, indicator objects and trend objects related to corrosion phenomena.

[0062] The launch platform corrosion life assessment method based on digital twins in the embodiment of the present invention focuses on the multi-factor corrosion problem of the marine corrosion climate on the launch platform. It combines the historical environmental spectrum collection of the launch site, the actual measurement of the on-site service working condition environment, the multi-scale laboratory corrosion characteristic experiment and the full-scale simulation of the complex physical field. By studying and analyzing the natural and working environment boundaries and characterization parameters of components in different parts, a set of technical methods that can more accurately evaluate the environmental adaptability of the launch platform is formed, and an evaluation method for the corrosion severity level of the sea-based launch platform under the interaction of multiple environmental factors and a corrosion life prediction method are constructed. This improves the safety, reliability and durability of the sea-based launch platform and its important facilities, and reduces the workload and economic cost of maintenance during the service period.

[0063] The process of forming the launch platform corrosion life assessment method based on the digital twin concept in the launch platform corrosion life assessment method based on the digital twin embodiment of the present invention is as follows: Figure 2 As shown. Figure 2 In the process, the experimental data and the formation mechanism of related processes are obtained through the electrochemical process carried out by the test piece and the structure of the structural parts. The experimental data and the formation mechanism of related processes are obtained through the electrochemical process in the simulation environment of the scaled structure platform. At the same time, the data foundation of the digital twin system is formed according to the literature data, historical data and on-site inspection and monitoring data. Further, the basic research results and experimental verification laws in the field of electrochemistry and electrocorrosion are used to form corrosion mechanism models and data-driven process models for various corrosion phenomena and various scales. The stability and accuracy of the model are maintained through necessary parameter adjustment and iteration. Further, the mature software technology of data processing is used to form data mining, data mapping, and data fusion to support the fusion of features and states between corrosion models of different scales and the overall finite element model of the platform. The digital twin model reflecting the corrosion dynamics process formed after fusion satisfies the description, diagnosis, prediction and decision support of the corrosion state.

[0064] like Figure 1 As shown, in one embodiment of the present invention, the formed digital twin model is used, further comprising:

[0065] Step 600: Process the on-site information according to the digital twin model to form a comprehensive assessment of the launch platform.

[0066] Those skilled in the art can understand that on-site information is time-series and can form a data base accumulation of the description dimension of the same expression object, can form real-time quantification and trend quantification of the expression object within the effective period of data, and can serve as the basis for evaluating a certain aspect of the launch platform. The digital twin model can fully display and describe the continuous impact of the environment on the launch platform throughout its life cycle. At the same time, the on-site data of the continuous impact can also iteratively verify and optimize the digital twin model. Monitoring and detection data include but are not limited to on-site measurement data and environmental meteorological data.

[0067] In one embodiment of the present invention, a launch platform corrosion life assessment method based on digital twin is used to assess the corrosion life of the launch platform. Figure 3 shown.

[0068] like Figure 1 As shown, in one embodiment of the present invention, the comprehensive evaluation includes:

[0069] Step 610: Based on the accumulation of on-site monitoring data, the digital twin model is used to evaluate the severity of the environment during the effective period. Figure 3 As shown, including:

[0070] Use the digital twin model to calculate the flow field of wind direction and speed data to determine the environmental heat transfer coefficient;

[0071] The temperature field of the launch platform is formed by the ambient temperature and relative humidity, the solar radiation level and the cloud cover coefficient combined with the ambient heat transfer coefficient;

[0072] The relative humidity field is formed based on the surface temperature of the launch platform combined with the temperature field;

[0073] Calculate the condensation state based on the environmental salt deposition data and environmental pH data combined with the relative humidity field;

[0074] Evaluate the severity of the environment based on the condensation status.

[0075] like Figure 1 As shown, in one embodiment of the present invention, the comprehensive evaluation further includes:

[0076] Step 620: Based on the accumulation of on-site monitoring and detection data, the digital twin model is used to analyze the corrosion details of key parts during the effective period. Figure 3 As shown, including:

[0077] The digital twin model is used to determine the variation pattern of the liquid film thickness on the launch platform surface according to the condensation state during the effective period;

[0078] Corrosion prediction of key locations of the launch platform is carried out based on the variation law of liquid film thickness;

[0079] Based on the corrosion prediction, an analytical analysis of the corrosion-mechanical state of the key positions of the platform is established.

[0080] like Figure 1 As shown, in one embodiment of the present invention, the comprehensive evaluation further includes:

[0081] Step 630: Based on the accumulation of on-site monitoring and detection data, the digital twin model is used to evaluate the corrosion level of the platform surface within the effective period. Figure 3 As shown, including:

[0082] The digital twin model is used to determine the corrosion rate process of the platform surface based on the variation law of the liquid film thickness and basic electrochemical test data;

[0083] The corrosion level of each part of the launch platform within the effective period is evaluated according to the corrosion rate process law.

[0084] like Figure 1 As shown, in one embodiment of the present invention, the comprehensive evaluation further includes:

[0085] Step 640: Based on the accumulation of on-site monitoring and detection data, the digital twin model is verified for evaluation effect within the effective period, and the digital twin model is iteratively optimized based on the verification results. Figure 3 As shown, including:

[0086] The corrosion rate, surface wetting time (TOW), and platform temperature and humidity predicted by the digital twin model within a certain period of time are verified based on the on-site monitoring data within the certain period of time, and the corresponding components of the digital twin model are iteratively optimized based on the validity error.

[0087] A launch platform corrosion life assessment system based on digital twin according to an embodiment of the present invention includes:

[0088] A memory, used to store program codes in the processing of the launch platform corrosion life assessment method based on digital twins of the above embodiment;

[0089] A processor is used to execute the program code in the processing of the launch platform corrosion life assessment method based on digital twin of the above embodiment.

[0090] The processor may be a DSP (Digital Signal Processor) digital signal processor, an FPGA (Field-Programmable Gate Array) field programmable gate array, an MCU (Microcontroller Unit) system board, a SoC (system on a chip) system board, or a PLC (Programmable Logic Controller) minimum system including I / O.

[0091] A launch platform corrosion life assessment system based on digital twins according to an embodiment of the present invention is as follows Figure 4 As shown. Figure 4 In this embodiment, the present invention includes:

[0092] A small-scale modeling device 10 is used to obtain electrochemical experimental data of the main application materials of the launch platform and form a material corrosion model of the small-scale corrosion kinetic process according to the experimental data;

[0093] The mesoscale modeling device 20 is used to obtain the experimental data of the main structural parts of the launch platform in the natural environment exposure test and the indoor simulated accelerated test, and form a structural corrosion model of the mesoscale corrosion dynamics process according to the experimental data;

[0094] A large-scale modeling device 30 is used to collect in-situ environmental experimental data and platform mechanical performance experimental data in an environmental-load simulation test according to the scaled structure of the launch platform, and form a structural mechanics-chemical coupled environmental corrosion model of a large-scale corrosion dynamics process according to the experimental data;

[0095] A twin model modeling device 40 is used to form a digital twin model reflecting the corrosion dynamics process by combining a material corrosion model, a structural corrosion model and a structural mechanics-chemical coupled environmental corrosion model with a full-scale launch platform finite element model;

[0096] The data dimension mapping device 50 is used to obtain the data dimension space of the on-site monitoring data and quantify the corrosion characteristics through data mining technology, and map the data dimension space with the expression dimension of the object represented in the digital twin model to form the evaluation data of the corrosion life of the launch platform.

[0097] like Figure 4 As shown, in one embodiment of the present invention, it also includes:

[0098] An accompanying bidirectional evaluation device 60 is used to process the field information according to the digital twin model to form a comprehensive evaluation of the launch platform.

[0099] like Figure 4 As shown, in one embodiment of the present invention, the accompanying two-way evaluation device 60 includes:

[0100] The environmental evaluation module 61 is used to evaluate the severity of the environment within the effective period through the digital twin model based on the accumulation of on-site monitoring and detection data.

[0101] like Figure 4 As shown, in one embodiment of the present invention, the accompanying two-way evaluation device 60 further includes:

[0102] The detail evaluation module 62 is used to analyze the corrosion details of key parts within the effective period through the digital twin model based on the accumulation of on-site monitoring and detection data.

[0103] like Figure 4 As shown, in one embodiment of the present invention, the accompanying two-way evaluation device 60 further includes:

[0104] The overall evaluation module 63 is used to evaluate the corrosion level of the platform surface within the effective period through the digital twin model based on the accumulation of on-site monitoring and detection data.

[0105] like Figure 4 As shown, in one embodiment of the present invention, the accompanying two-way evaluation device 60 further includes:

[0106] The model verification module 64 is used to verify the evaluation effect of the digital twin model within an effective period based on the accumulation of on-site monitoring and detection data, and to iteratively optimize the digital twin model based on the verification results.

[0107] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for evaluating the corrosion life of a launch platform based on digital twins, characterized in that: include: Obtain the electrochemical experimental data of the main application materials of the launch platform, and form a material corrosion model of the small-scale corrosion kinetic process based on the experimental data; Obtain the experimental data of the main structural parts of the launch platform in the natural environment exposure test and indoor simulated accelerated test, and form a structural corrosion model of the mesoscale corrosion kinetic process based on the experimental data; According to the scaled structure of the launch platform, in-situ environmental experimental data and platform mechanical performance experimental data are collected in the environmental-load simulation test, and a structural mechanics-chemical coupled environmental corrosion model of the large-scale corrosion dynamics process is formed based on the experimental data; A digital twin model that reflects the corrosion dynamics process is formed by integrating the material corrosion model, structural corrosion model, and structural mechanics-chemistry coupled environmental corrosion model with the full-scale launch platform finite element model. The on-site monitoring and detection data is obtained and the data dimension space of the corrosion characteristics is quantified through data mining technology. The data dimension space is mapped with the expression dimension of the object in the digital twin model to form the evaluation data of the corrosion life of the launch platform.

2. The launch platform corrosion life assessment method based on digital twin according to claim 1, characterized in that: Also includes: The on-site information is processed according to the digital twin model to form a comprehensive assessment of the launch platform.

3. The launch platform corrosion life assessment method based on digital twin according to claim 2, characterized in that: The comprehensive assessment includes: Based on the accumulation of on-site monitoring and testing data, the digital twin model is used to evaluate the severity of the environment during the effective period; Based on the accumulation of on-site monitoring and testing data, the digital twin model is used to analyze the corrosion details of key parts within the effective period; Based on the accumulation of on-site monitoring and testing data, the digital twin model is used to evaluate the corrosion level of the platform surface within the effective period; Based on the accumulation of on-site monitoring and detection data, the evaluation effect of the digital twin model is verified within an effective period, and the digital twin model is iteratively optimized based on the verification results.

4. The launch platform corrosion life assessment method based on digital twin according to claim 3 is characterized in that: The evaluation of the severity of the environment during the effective period includes: Use the digital twin model to calculate the flow field of wind direction and speed data to determine the environmental heat transfer coefficient; The temperature field of the launch platform is formed by the ambient temperature and relative humidity, the solar radiation level and the cloud cover coefficient combined with the ambient heat transfer coefficient; The relative humidity field is formed based on the surface temperature of the launch platform combined with the temperature field; Calculate the condensation state based on the environmental salt deposition data and environmental pH data combined with the relative humidity field; Evaluate the severity of the environment based on the condensation status.

5. The launch platform corrosion life assessment method based on digital twin according to claim 4, characterized in that: The detailed analysis of corrosion at key locations within the effective period includes: The digital twin model is used to determine the variation pattern of the liquid film thickness on the launch platform surface according to the condensation state during the effective period; Corrosion prediction of key locations of the launch platform is carried out based on the variation law of liquid film thickness; Based on the corrosion prediction, an analytical analysis of the corrosion-mechanical state of the key positions of the platform is established.

6. The launch platform corrosion life assessment method based on digital twin according to claim 5, characterized in that: The evaluation of the platform surface corrosion level within the effective period includes: The digital twin model is used to determine the corrosion rate process of the platform surface based on the variation law of the liquid film thickness and basic electrochemical test data; The corrosion level of each part of the launch platform within the effective period is evaluated according to the corrosion rate process law.

7. The launch platform corrosion life assessment method based on digital twin according to claim 6, characterized in that: The verification of the evaluation effect of the digital twin model within the effective period includes: The corrosion rate, surface wetting time, and platform temperature and humidity predicted by the digital twin model within a certain period of time are verified based on the on-site monitoring data within the certain period of time, and the corresponding components of the digital twin model are iteratively optimized based on the effectiveness error.

8. A launch platform corrosion life assessment system based on digital twin, characterized in that: include: A memory, used to store program codes in the processing of the launch platform corrosion life assessment method based on digital twins according to any one of claims 1 to 7; A processor is used to execute the program code.

9. A launch platform corrosion life assessment system based on digital twin, characterized in that: include: Small-scale modeling device, used to obtain electrochemical experimental data of the main application materials of the launch platform, and form a material corrosion model of the small-scale corrosion kinetic process based on the experimental data; Mesoscale modeling device, used to obtain experimental data of the main structural parts of the launch platform in natural environment exposure tests and indoor simulated accelerated tests, and form a structural corrosion model of the mesoscale corrosion dynamics process based on the experimental data; Large-scale modeling device, used to collect in-situ environmental experimental data and platform mechanical performance experimental data in the environmental-load simulation test according to the scaled structure of the launch platform, and form a structural mechanics-chemical coupled environmental corrosion model of the large-scale corrosion dynamics process according to the experimental data; A twin model modeling device is used to form a digital twin model reflecting the corrosion dynamics process based on the material corrosion model, the structural corrosion model and the structural mechanics-chemistry coupled environmental corrosion model combined with the full-scale launch platform finite element model; The data dimension mapping device is used to obtain the data dimension space of corrosion characteristics of on-site monitoring data through data mining technology, and map the data dimension space with the expression dimension of the object represented in the digital twin model to form the evaluation data of the corrosion life of the launch platform.

10. The launch platform corrosion life assessment system based on digital twin according to claim 9, characterized in that: Also includes: It is accompanied by a two-way evaluation device, which is used to process on-site information according to the digital twin model to form a comprehensive evaluation of the launch platform.

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