A three-dimensional anticorrosion simulation control method and system based on a ship transmission system

Abstract

The application discloses a three-dimensional anticorrosion simulation control method and system based on a ship transmission system, which realizes automatic assembly of three-dimensional parts of a rotating system, simulates a marine environment by using a particle algorithm, performs mesh division on a three-dimensional structure according to particle parameters and different bending degrees of the parts, dynamically calculates corrosion speeds of each mesh, and finally obtains service lives of each part of the transmission system. The system realizes dynamic calculation of service means of the parts for different marine environments and different structures of the parts, and improves the accuracy of life calculation of the ship transmission system.

Description

Technical fields:

[0001] This invention belongs to the field of simulation control, and in particular relates to a three-dimensional anti-corrosion simulation control method and system based on ship transmission systems. Background technology:

[0002] Ships have complex structures, and the durability of ship components and structures is a fundamental requirement for ship design and construction. The transmission system, in particular, is complex and demands high stability from its components. Seawater corrosiveness to these components directly affects the ship's operational performance. Especially in the bent parts of rotating system components, the degree of corrosion varies between the inner and outer surfaces due to different levels of seawater impact and contact surfaces. Furthermore, the varying marine environments in different sea areas make the service life of ship components difficult to predict.

[0003] Computer tools have been widely used in the design process of many industrial sectors, especially for the prediction and simulation of structural performance. In the face of corrosion problems in marine transmission systems, how to simulate the marine environment and predict corrosion of complex components of the transmission system has become an urgent problem to be solved. Summary of the Invention

[0004] To address the issue of varying degrees of seawater corrosion affecting complex components in existing ship transmission systems under different marine environments and at different structural locations, this invention proposes a three-dimensional corrosion prevention simulation control method and system based on ship transmission systems. The method specifically includes the following structure and steps:

[0005] S1: Establish three-dimensional structural models of each component of the transmission system;

[0006] S2: Automatically assemble the models of various components of the transmission system to complete the three-dimensional model of the transmission system;

[0007] S3: For the three-dimensional model of the transmission system, construct a particle cluster within a fixed range on the surface of the three-dimensional model, and initialize the particle velocity, acceleration, vector direction, oxygen saturation, and fluid density parameters.

[0008] S4: Activate the particle cluster to obtain particle parameters within a fixed range on the surface of the 3D model;

[0009] S5: Mesh the 3D model of the transmission system based on the particle parameters within a fixed range on the surface of the 3D model;

[0010] S6: For each grid, the corrosion rate is calculated based on the current particle parameters, forming a dynamic calculation process for the corrosion rate of each grid;

[0011] S7: Dynamic calculation process for corrosion rate of each grid, and calculation of service life of each component of the transmission system.

[0012] Further, step S1, establishing a three-dimensional structural model of each component of the transmission system, specifically includes:

[0013] Based on the model, size, structure, and material type of each component of the transmission system, a three-dimensional structural model of each component of the transmission system is constructed using existing three-dimensional modeling software;

[0014] Define the identifiers for each component, and set the assembly surfaces and assembly holes for each component;

[0015] Calculate the reference axis and assembly angle of the assembly surface and assembly hole of each component;

[0016] Furthermore, step S2: automatically assembling the models of each component of the transmission system to complete the three-dimensional model of the transmission system, specifically includes:

[0017] Based on the reference axis and assembly angle of each component, and according to the assembly structure of each component in the transmission system, the automatic assembly of each component in the transmission system is realized.

[0018] Further, step S4: activating the particle cluster to obtain particle parameters within a fixed range on the surface of the 3D model; specifically including:

[0019] The particle cluster is started according to the initial parameters of particle velocity, acceleration, vector direction, oxygen saturation, and fluid density;

[0020] Based on the material friction, bending angle, and bending direction of the three-dimensional model surface of the transmission system, the particle trajectory is calculated, as well as the particle parameters at the current moment and position on the three-dimensional model surface during the movement, including flow velocity, acceleration, vector direction, oxygen saturation, and fluid density parameters.

[0021] Further, step S5: meshing the three-dimensional model of the transmission system based on particle parameters within a fixed range on the surface of the three-dimensional model; specifically including:

[0022] Based on the particle parameters, the particles within a fixed range on the surface of the 3D model are clustered, and the mesh is divided based on the particle clustering results.

[0023] Furthermore, the clustering method includes determining the clustering range size based on the curvature of the 3D model surface; when the curvature of the 3D model surface is greater, the clustering range is smaller, and a smaller mesh area can be obtained; when the curvature of the 3D surface is smaller, the clustering range is larger, and a larger mesh area can be obtained.

[0024] Further, in step S6: for each grid, calculate the corrosion rate according to the current particle parameters to form a dynamic calculation process of the corrosion rate for each grid; specifically including:

[0025]

[0026] Among them, F(t,g) is the corrosion rate of the current grid at the current moment, t is the current moment, g is the current grid area number; T is the atomic weight of the component material, V is the average fluid velocity on the surface of the three-dimensional model, c s is the oxygen concentration at the inner wall surface of this grid area; k s is the turbulent kinetic energy at the inner wall surface of this grid area; w w is the shear stress at the inner wall surface of this grid area; ρ is the fluid density; u is a constant term.

[0027] Further, in step S7: for the dynamic calculation process of the corrosion rate of each grid, calculate the service life of each component of the transmission system. Specifically including:

[0028] For the grid area on the component surface where the bending degree is greater than the fixed threshold, collect the corrosion rate values of this grid at intervals of t1; and perform weighted averaging on each corrosion rate value to obtain a weighted average value F1;

[0029] For the grid area on the component surface where the bending degree is less than the fixed threshold, collect the corrosion rate values of this grid at intervals of t2; and perform weighted averaging on each corrosion rate value to obtain a weighted average value F2;

[0030] Among them, t1 < t2; the fixed threshold can be flexibly set according to the actual component structure;

[0031] If the weighted average value F2 of this grid is greater than the threshold Q, increase the interval time length of t2;

[0032] According to the corrosion rate of each grid in the component, calculate the service life of this component according to the fastest n grids with the corrosion rate;

[0033] Among them, n = 5.

[0034] A three-dimensional anti-corrosion simulation control system based on a ship transmission system, the system includes:

[0035] A three-dimensional construction module for establishing a three-dimensional structure model of each component of the transmission system;

[0036] An automatic assembly module: realizing the automatic assembly of each component model of the transmission system and constructing a three-dimensional model of the transmission system;

[0037] Particle building module: For the 3D model of the transmission system, it builds a particle cluster within a fixed range on the surface of the 3D model and initializes the particle velocity, acceleration, vector direction, oxygen saturation, and fluid density parameters.

[0038] Parameter acquisition module: Activates the particle cluster to obtain particle parameters within a fixed range on the surface of the 3D model;

[0039] Mesh generation module: Generates a mesh for the 3D model of the transmission system based on particle parameters within a fixed range on the surface of the 3D model;

[0040] Corrosion rate calculation module: For each grid, the corrosion rate is calculated based on the current particle parameters, forming a dynamic calculation process for the corrosion rate of each grid;

[0041] Service life calculation module: This module dynamically calculates the corrosion rate of each grid and the service life of each component in the transmission system.

[0042] The beneficial effects of this invention are as follows:

[0043] 1. This invention establishes a three-dimensional structural model of a ship's transmission system, enabling automatic assembly of three-dimensional component structures and improving the efficiency and accuracy of model construction;

[0044] 2. The use of particle simulation algorithms to simulate the dynamic marine environment improves the accuracy of corrosion rate calculation for components;

[0045] 3. Based on the change process of particle parameters and the degree of bending of the parts, the mesh is divided to further refine the corrosion rate of different parts of the parts and improve the accuracy of corrosion rate calculation;

[0046] 4. Refine the calculation formula for corrosion of components to improve the accuracy of corrosion calculation;

[0047] 5. Differentiate the time interval for corrosion rate sampling in different mesh areas to reduce overall system power consumption.

[0048] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above description and other objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are provided and described in detail below. Attached Figure Description

[0049] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0050] Figure 1 A flowchart of a three-dimensional corrosion prevention simulation control method based on ship transmission systems. Detailed Implementation

[0051] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0052] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0053] Example 1

[0054] A three-dimensional corrosion prevention simulation control method based on a ship's transmission system includes the following steps:

[0055] S1: Establish three-dimensional structural models of each component of the transmission system;

[0056] S2: Automatically assemble the models of various components of the transmission system to complete the three-dimensional model of the transmission system;

[0057] S3: For the three-dimensional model of the transmission system, construct a particle cluster within a fixed range on the surface of the three-dimensional model, and initialize the particle velocity, acceleration, vector direction, oxygen saturation, and fluid density parameters.

[0058] S4: Activate the particle cluster to obtain particle parameters within a fixed range on the surface of the 3D model;

[0059] S5: Mesh the 3D model of the transmission system based on the particle parameters within a fixed range on the surface of the 3D model;

[0060] S6: For each grid, the corrosion rate is calculated based on the current particle parameters, forming a dynamic calculation process for the corrosion rate of each grid;

[0061] S7: Dynamic calculation process for corrosion rate of each grid, and calculation of service life of each component of the transmission system.

[0062] Further, step S1, establishing a three-dimensional structural model of each component of the transmission system, specifically includes:

[0063] Based on the model, size, structure, and material type of each component of the transmission system, a three-dimensional structural model of each component of the transmission system is constructed using existing three-dimensional modeling software;

[0064] Define the identifiers for each component, and set the assembly surfaces and assembly holes for each component;

[0065] Calculate the reference axis and assembly angle of the assembly surface and assembly hole of each component;

[0066] Furthermore, step S2: automatically assembling the models of each component of the transmission system to complete the three-dimensional model of the transmission system, specifically includes:

[0067] Based on the reference axis and assembly angle of each component, and according to the assembly structure of each component in the transmission system, the automatic assembly of each component in the transmission system is realized.

[0068] Further, step S4: activating the particle cluster to obtain particle parameters within a fixed range on the surface of the 3D model; specifically including:

[0069] The particle cluster is started according to the initial parameters of particle velocity, acceleration, vector direction, oxygen saturation, and fluid density;

[0070] Based on the material friction, bending angle, and bending direction of the three-dimensional model surface of the transmission system, the particle trajectory is calculated, as well as the particle parameters at the current moment and position on the three-dimensional model surface during the movement, including flow velocity, acceleration, vector direction, oxygen saturation, and fluid density parameters.

[0071] Further, step S5: meshing the three-dimensional model of the transmission system based on particle parameters within a fixed range on the surface of the three-dimensional model; specifically including:

[0072] Based on the particle parameters, the particles within a fixed range on the surface of the 3D model are clustered, and the mesh is divided based on the particle clustering results.

[0073] Furthermore, the clustering method includes determining the clustering range size based on the curvature of the 3D model surface; when the curvature of the 3D model surface is greater, the clustering range is smaller, and a smaller mesh area can be obtained; when the curvature of the 3D surface is smaller, the clustering range is larger, and a larger mesh area can be obtained.

[0074] Further, step S6: For each grid, the corrosion rate is calculated based on the current particle parameters, forming a dynamic calculation process for the corrosion rate of each grid; specifically including:

[0075]

[0076] Among them, F(t, g) is the corrosion rate of the current grid at the current moment, t is the current moment, and g is the current grid area number; T is the atomic weight of the component material, V is the average fluid velocity on the surface of the three-dimensional model, and c s is the oxygen concentration at the inner wall surface of this grid area; k s is the turbulent kinetic energy at the inner wall surface of this grid area; w w is the shear stress at the inner wall surface of this grid area; ρ is the fluid density; u is a constant term.

[0077] Furthermore, in step S7: for the dynamic calculation process of the corrosion rate of each grid, calculate the service life of each component of the transmission system. Specifically, it includes:

[0078] For the grid area on the component surface where the bending degree is greater than the fixed threshold, collect the corrosion rate values of this grid at intervals of t1; and perform weighted averaging on each corrosion rate value to obtain the weighted average value F1;

[0079] For the grid area on the component surface where the bending degree is less than the fixed threshold, collect the corrosion rate values of this grid at intervals of t2; and perform weighted averaging on each corrosion rate value to obtain the weighted average value F2;

[0080] Among them, t1 < t2; the fixed threshold can be flexibly set according to the actual component structure;

[0081] If the weighted average value F2 of this grid is greater than the threshold Q, increase the interval time length of t2;

[0082] According to the corrosion rate of each grid in the component, calculate the service life of this component according to the top n grids with the fastest corrosion rate;

[0083] Among them, n = 5.

[0084] Embodiment 2

[0085] A three-dimensional anti-corrosion simulation control system based on a ship transmission system, the system includes:

[0086] A three-dimensional construction module, used to establish a three-dimensional structure model of each component of the transmission system;

[0087] An automatic assembly module: realizes the automatic assembly of each component model of the transmission system and constructs a three-dimensional model of the transmission system;

[0088] Particle building module: For the 3D model of the transmission system, it builds a particle cluster within a fixed range on the surface of the 3D model and initializes the particle velocity, acceleration, vector direction, oxygen saturation, and fluid density parameters.

[0089] Parameter acquisition module: Activates the particle cluster to obtain particle parameters within a fixed range on the surface of the 3D model;

[0090] Mesh generation module: Generates a mesh for the 3D model of the transmission system based on particle parameters within a fixed range on the surface of the 3D model;

[0091] Corrosion rate calculation module: For each grid, the corrosion rate is calculated based on the current particle parameters, forming a dynamic calculation process for the corrosion rate of each grid;

[0092] Service life calculation module: This module dynamically calculates the corrosion rate of each grid and the service life of each component in the transmission system.

[0093] The advantages of this invention are:

[0094] 1. This invention establishes a three-dimensional structural model of a ship's transmission system, enabling automatic assembly of three-dimensional component structures and improving the efficiency and accuracy of model construction;

[0095] 2. The use of particle simulation algorithms to simulate the dynamic marine environment improves the accuracy of corrosion rate calculation for components;

[0096] 3. Based on the change process of particle parameters and the degree of bending of the parts, the mesh is divided to further refine the corrosion rate of different parts of the parts and improve the accuracy of corrosion rate calculation;

[0097] 4. Refine the calculation formula for corrosion of components to improve the accuracy of corrosion calculation;

[0098] 5. Differentiate the time interval for corrosion rate sampling in different mesh areas to reduce overall system power consumption.

[0099] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A three-dimensional corrosion prevention simulation control method based on a ship's transmission system, characterized in that, Includes the following steps: S1: Establish three-dimensional structural models of each component of the transmission system; S2: Automatically assemble the models of various components of the transmission system to complete the three-dimensional model of the transmission system; S3: For the three-dimensional model of the transmission system, construct a particle cluster within a fixed range on the surface of the three-dimensional model, and initialize the particle velocity, acceleration, vector direction, oxygen saturation, and fluid density parameters. S4: Activate the particle cluster to obtain particle parameters within a fixed range on the surface of the 3D model; S5: Mesh the 3D model of the transmission system based on the particle parameters within a fixed range on the surface of the 3D model; S6: For each grid, the corrosion rate is calculated based on the current particle parameters, forming a dynamic calculation process for the corrosion rate of each grid; S7: Dynamic calculation process for corrosion rate of each grid, and calculation of service life of each component of the transmission system; Step S1, establishing a three-dimensional structural model of each component of the transmission system, specifically includes: constructing a three-dimensional structural model of each component of the transmission system using existing three-dimensional modeling software based on the model, size, structure, and material type of each component; defining the identifier of each component; setting the assembly surface and assembly hole of each component; and calculating the reference axis and assembly angle of the assembly surface and assembly hole of each component. Step S2: Automatic assembly of the transmission system component models is achieved, and the three-dimensional model of the transmission system is completed. Specifically, this includes: automatic assembly of the transmission system components based on the reference axes and assembly angles of each component and according to the assembly structure of each component. Step S6: For each grid, the corrosion rate is calculated based on the current particle parameters, forming a dynamic calculation process for the corrosion rate of each grid; specifically including: in, The corrosion rate of the current mesh at the current moment is given by t, where t is the current moment, g is the current mesh region number, T is the atomic weight of the component material, and V is the average fluid velocity on the surface of the 3D model. This represents the oxygen concentration at the wall surface within the grid area. This represents the turbulent kinetic energy at the wall within the grid region. This represents the shear stress at the wall surface within the grid region; For fluid density; , This is a constant term.

2. The three-dimensional corrosion prevention simulation control method based on ship transmission system according to claim 1, characterized in that: Step S4: Activate the particle cluster and obtain particle parameters within a fixed range on the surface of the 3D model; specifically including: The particle cluster is started according to the initial parameters of particle velocity, acceleration, vector direction, oxygen saturation, and fluid density; Based on the material friction, bending angle, and bending direction of the surface of the 3D model of the transmission system, the particle trajectory is calculated, as well as the particle parameters at the current moment and position on the surface of the 3D model during the movement, including flow velocity, acceleration, vector direction, oxygen saturation, and fluid density parameters.

3. The three-dimensional corrosion prevention simulation control method based on ship transmission system according to claim 1, characterized in that: Step S5: Mesh the 3D model of the transmission system based on the particle parameters within a fixed range on the surface of the 3D model; specifically including: Based on the particle parameters, the particles within a fixed range on the surface of the 3D model are clustered, and the mesh is divided based on the particle clustering results. Furthermore, the clustering method includes determining the clustering range size based on the curvature of the three-dimensional model surface; when the curvature of the three-dimensional model surface is greater, the clustering range is smaller, and a smaller mesh area can be obtained; when the curvature of the three-dimensional surface is smaller, the clustering range is larger, and a larger mesh area can be obtained.

4. The three-dimensional anti-corrosion simulation control method based on a ship transmission system according to claim 1, wherein: In step S7: For the dynamic calculation process of the corrosion rate of each grid, calculate the service life of each component of the transmission system; specifically including: For the grid area on the surface of the component where the bending degree is greater than the fixed threshold, collect the corrosion rate values of this grid at intervals of t1; and perform weighted averaging on each corrosion rate value to obtain the weighted average value F1; For the grid area on the surface of the component where the bending degree is less than the fixed threshold, collect the corrosion rate values of this grid at intervals of t2; and perform weighted averaging on each corrosion rate value to obtain the weighted average value F2; Where t1 < t2; the fixed threshold can be flexibly set according to the actual component structure; If the weighted average value F2 of this grid is greater than the threshold Q, increase the time length of the interval t2; According to the corrosion rate of each grid in the component, calculate the service life of this component according to the top n grids with the fastest corrosion rate; Where n = 5.

5. A three-dimensional corrosion prevention simulation control system based on a ship's transmission system, characterized in that, The system includes: A three-dimensional construction module for establishing a three-dimensional structural model of each component of the transmission system; An automatic assembly module: realizing the automatic assembly of the models of each component of the transmission system and constructing a three-dimensional model of the transmission system; A particle construction module: For the three-dimensional model of the transmission system, construct a particle cluster within a fixed range on the surface of the three-dimensional model, and initialize particle flow velocity, acceleration, vector direction, oxygen saturation, and fluid density parameters; A parameter acquisition module: Start the particle cluster and obtain the particle parameters of the particles within a fixed range on the surface of the three-dimensional model; A grid division module: Divide the three-dimensional model of the transmission system according to the particle parameters within a fixed range on the surface of the three-dimensional model; A corrosion rate calculation module: For each grid, calculate the corrosion rate according to the current particle parameters to form a dynamic calculation process of the corrosion rate of each grid; A service life calculation module: For the dynamic calculation process of the corrosion rate of each grid, calculate the service life of each component of the transmission system; The three-dimensional construction module is used to establish a three-dimensional structural model of each component of the transmission system, specifically including: According to the model, size, structure, and material type of each component of the transmission system, use existing three-dimensional modeling software to construct a three-dimensional structural model of each component of the transmission system; define the identifier of each component, set the assembly surface and assembly holes of each component; calculate the reference axis and assembly angle of the assembly surface and assembly holes of each component; The particle construction module is used to realize the automatic assembly of the models of each component of the transmission system and construct a three-dimensional model of the transmission system, specifically including: Based on the reference axis and assembly angle of each component, according to the assembly structure of each component of the transmission system, realize the automatic assembly of each component of the transmission system; The corrosion rate calculation module is used to calculate the corrosion rate according to the current particle parameters for each grid to form a dynamic calculation process of the corrosion rate of each grid; specifically including: in, The corrosion rate of the current mesh at the current moment is given by t, where t is the current moment, g is the current mesh region number, T is the atomic weight of the component material, and V is the average fluid velocity on the surface of the 3D model. This represents the oxygen concentration at the wall surface within the grid area. This represents the turbulent kinetic energy at the wall within the grid region. This represents the shear stress at the wall surface within the grid region; For fluid density; , This is a constant term.

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