CN-121980696-A - Planet carrier automatic simulation method, equipment and readable storage medium

CN121980696ACN 121980696 ACN121980696 ACN 121980696ACN-121980696-A

Abstract

The application provides a planet carrier automatic simulation method, equipment and a readable storage medium, after an electronic device obtains an assembly model, a gear parameter file, geometric parameters and simulation parameters of a planet carrier, and generating a simplified geometric model attached with the naming selection set according to the assembly model and the geometric parameters, and generating a grid parameter file according to the naming selection set. The electronic equipment also determines load parameters of the planet carrier under different working conditions according to the gear parameter file and the torque of the planet carrier under different working conditions. Finally, the electronic equipment simulates the rigidity and static strength of the planet carrier according to the simplified geometric model, the grid parameter file, the simulation parameters and the load parameters of the planet carrier under different working conditions. By adopting the scheme, the electronic equipment automatically simulates the static strength and rigidity of the planet carrier according to the assembly model of the planet carrier, the gear parameter file and the like, does not need to be manually participated, and has high automation degree, low cost and short period.

Inventors

SHI YU
SU CAIPING
WANG BINBIN
CHEN ZHIYU

Assignees

远景能源有限公司

Dates

Publication Date: 20260505
Application Date: 20251217

Claims (10)

1. An automated simulation method for a planet carrier is characterized by comprising the following steps: Acquiring an assembly model of a planet carrier, a gear parameter file, geometric parameters and simulation parameters, wherein the gear parameter file is a basis for determining a stress source and a stress magnitude of the planet carrier, the geometric parameters are used for describing the size and the characteristics of the planet carrier, and the simulation parameters at least comprise torque of the planet carrier under different working conditions; Automatically generating a simplified geometric model attached with a naming selection set according to the assembly model and the geometric parameters, wherein geometric objects in the naming selection set have the same attribute and correspond to the same name, and the names of different naming selection sets are different; generating a grid parameter file according to the naming selected sets, wherein the content of the grid parameter file comprises the names of the naming selected sets and parameters required by grid division of the simplified geometric model; Determining load parameters of the planet carrier under different working conditions according to the gear parameter file and the torque of the planet carrier under different working conditions; and automatically simulating the static strength and rigidity of the planet carrier according to the simplified geometric model, the grid parameter file, the simulation parameters and the load parameters of the planet carrier under different working conditions.
2. The method of claim 1, wherein automatically generating a simplified geometric model with a named selection set attached thereto from the assembly model and the geometric parameters comprises: renaming each part in the assembly model and simplifying the assembly model to obtain an intermediate model, wherein the intermediate model is a simplified geometric model of a non-attached naming selection set; Creating a plurality of surface sets according to the intermediate model, wherein all surfaces belonging to the same surface set have the same attribute; and dividing the surfaces contained in the intermediate model according to the plurality of surface sets and the geometric parameters to obtain the simplified geometric model attached with the naming selection set.
3. The method according to claim 1, wherein the gear parameter file is a gear parameter file of a planet carrier corresponding to a multi-stage planetary gear train included in a wind power gear box, and the determining load parameters of the planet carrier under different working conditions according to the gear parameter file and torques of the planet carrier under different working conditions includes: And determining the tangential force of a planet pin shaft of a planet carrier corresponding to a kth-stage planetary gear train, the bending moment of the planet pin shaft and the axial force transmitted to the kth-stage planetary gear train by the kth-1-stage planetary gear train according to the gear parameter file and the torque of the planet carrier under different working conditions to obtain the load parameters of the planet carrier corresponding to the kth-stage planetary gear train under different working conditions, wherein the kth-stage planetary gear train and the kth-1-stage planetary gear train are two adjacent planetary gear trains in the multistage planetary gear train.
4. A method according to any one of claims 1 to 3, wherein simulating the static strength and rigidity of the planet carrier according to the simplified geometric model, the mesh parameter file, the simulation parameters and the load parameters of the planet carrier under different working conditions comprises: Automatically generating a finite element model according to the simplified geometric model, the grid parameter file, the simulation parameters and the load parameters of the planet carrier under different working conditions; and simulating static strength and rigidity of the planet carrier by using the finite element model.
5. The method of claim 4, wherein automatically generating the finite element model based on the simplified geometric model, the mesh parameter file, the simulation parameters, and the load parameters of the planet carrier under different conditions comprises: Setting the simplified geometric model according to physical parameters in the simulation parameters, performing grid division on the simplified geometric model according to the grid parameter file, applying load parameters of the planet carrier under different working conditions to the simplified geometric model to generate the finite element model, wherein setting the simplified geometric model comprises the steps of endowing material properties to parts in the simplified geometric model, setting contact pairs according to the naming selection set, and creating a local coordinate system and a path for each pin shaft in the simplified geometric model.
6. The method of claim 5, wherein the different operating conditions include a nominal operating condition, a positive torque limit operating condition, and a negative torque limit operating condition, the simulating the static strength and stiffness of the planet carrier using the finite element model comprising: For rated working conditions, according to the paths of all the pins in the simplified geometric model, tangential deformation results are extracted from the finite element model so as to simulate the rigidity of the planet carrier; And determining a plurality of stress hot spots from the finite element model according to the naming selection set for the limit positive torque working condition and the limit negative torque working condition, and simulating the static strength of the planet carrier by using the finite element model and the stress hot spots.
7. The method of claim 6, wherein after simulating the static strength of the planet carrier using the finite element model and the plurality of stress hotspots, further comprising: determining a safety coefficient for each stress hot spot in the stress hot spots to obtain the safety coefficient of each stress hot spot, wherein the safety coefficient comprises the ratio of the yield limit to the maximum main stress under the limit positive torque working condition and the ratio of the yield limit to the maximum main stress under the limit negative torque working condition; and checking the static strength of the planet carrier according to the safety coefficient of each stress hot spot in the stress hot spots.
8. The method according to any one of claims 1 to 7, wherein after simulating the static strength and rigidity of the planet carrier according to the simplified geometric model, the mesh parameter file, the simulation parameters and the load parameters of the planet carrier under different working conditions, the method further comprises: Generating a first file and a second file, wherein the first file is used for indicating a rigidity simulation result of the planet carrier, and the second file is used for indicating a static strength simulation result of the planet carrier; Outputting the first file, the second file and a simulation result graph, wherein the simulation result graph comprises at least one of a geometric model graph, a grid model graph, a tangential deformation cloud graph, a global stress cloud graph and a local stress cloud graph, the grid model graph is used for displaying a grid model obtained by performing grid division on the simplified geometric model, the tangential deformation cloud graph is used for displaying tangential deformation results of each pin shaft in the simplified geometric model, the global stress cloud graph is used for displaying stress distribution of the planet carrier, and the local stress cloud graph is used for displaying stress of stress hot spots of the planet carrier.
9. An electronic device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, wherein execution of the computer program by the processor causes the electronic device to implement the method of any one of claims 1 to 8.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the method according to any one of claims 1 to 8.

Description

Planet carrier automatic simulation method, equipment and readable storage medium Technical Field The application relates to the technical field of wind power generation, in particular to a planet carrier automatic simulation method, equipment and a readable storage medium. Background With the continuous development of society, the demand for energy is increasing, and wind energy is becoming a clean renewable energy source and is increasingly valued in all countries of the world. The wind generating set is a main device for generating electric energy by utilizing wind energy, such as a wind generating set, a fan and the like. The wind power gear box is a key transmission part for connecting a wind wheel and a generator in a wind power generator set and comprises a planet carrier, a sun wheel, a planet wheel and the like, wherein the planet carrier is a key stress part of the wind power gear box, and static strength and rigidity are two important indexes of the planet carrier, namely the static strength is used for measuring the capacity of the planet carrier for resisting damage under the action of load, and the rigidity is used for measuring the capacity of the planet carrier for resisting elastic deformation. The static strength and rigidity of the planet carrier are obtained through the planet carrier sample, the static load of the simulation working condition is applied to the planet carrier sample, the stress distribution of the key part of the planet carrier is measured through the strain gauge, the deformation is measured through the displacement sensor and the like, and therefore the static strength and rigidity of the planet carrier are obtained. However, the traditional experimental scheme has the defects of high cost and long period. Disclosure of Invention The application provides a planet carrier automatic simulation method, equipment and a readable storage medium, which automatically simulate the static strength and rigidity of a planet carrier according to an assembly model of the planet carrier, a gear parameter file and the like, and have high automation degree and short period. In a first aspect, the present application provides a method for automated simulation of a planet carrier, comprising: Acquiring an assembly model of a planet carrier, a gear parameter file, geometric parameters and simulation parameters, wherein the gear parameter file is a basis for determining a stress source and a stress magnitude of the planet carrier, the geometric parameters are used for describing the size and the characteristics of the planet carrier, and the simulation parameters at least comprise torque of the planet carrier under different working conditions; Automatically generating a simplified geometric model attached with a naming selection set according to the assembly model and the geometric parameters, wherein geometric objects in the naming selection set have the same attribute and correspond to the same name, and the names of different naming selection sets are different; automatically generating a grid parameter file according to the naming selected sets, wherein the content of the grid parameter file comprises the names of the naming selected sets and parameters required by executing grid division on the simplified geometric model; Determining load parameters of the planet carrier under different working conditions according to the gear parameter file and the torque of the planet carrier under different working conditions; and automatically simulating the static strength and rigidity of the planet carrier according to the simplified geometric model, the grid parameter file and the load parameters of the planet carrier under different working conditions. In a second aspect, the present application provides a planet carrier automation simulation device, comprising: The device comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring an assembly model of a planet carrier, a gear parameter file, geometric parameters and simulation parameters, the gear parameter file is a basis for determining a stress source and a stress magnitude of the planet carrier, the geometric parameters are used for describing the size and the characteristics of the planet carrier, and the simulation parameters at least comprise torques of the planet carrier under different working conditions; The processing module is used for generating a simplified geometric model attached with a naming selection set according to the assembly model and the geometric parameters, wherein geometric objects in the naming selection set have the same attribute and correspond to the same name, and the names of different naming selection sets are different; the generation module is used for generating a grid parameter file according to the naming selection sets, wherein the content of the grid parameter file comprises the names of the naming selection sets and parameters required