Cup-shaped locking ring locking structure design method and system

Abstract

The invention belongs to the field of aero-engines, relates to the aero-engine transmission and supporting system design technology, and provides a cup-shaped locking ring locking structure design method and system.The method comprises the steps that an initial cup-shaped locking ring and an initial nut are designed, obtaining an initial material of an initial cup-shaped locking ring, initial structure parameters of the locking ring and initial structure parameters of a nut locking groove in an initial nut; performing static strength evaluation on the initial cup-shaped locking ring according to the initial material and the material yield strength through a finite element simulation method, and correcting the initial cup-shaped locking ring until the cup-shaped locking ring meeting the material yield strength is obtained; the vibration stress reserve of the cup-shaped locking ring is calculated, and the initial structure parameters of the nut locking groove are corrected according to the vibration stress reserve until the structure parameters, meeting the vibration stress reserve, of the oil passing locking ring and the nut locking groove are obtained. By means of the cup-shaped locking ring locking structure, the locking groove structure meeting the strength requirement can be obtained, the reliability of the structure is improved, and the service life of the structure is prolonged.

Description

Technical Field

[0001] The present invention belongs to the field of aero-engines, relates to the design technology of the transmission and support system of aero-engines, and particularly relates to a design method and system for a cup-shaped lock ring locking structure. Background Art

[0002] When designing the transmission and support system of an aero-engine, it is necessary to limit the position and prevent the rotation of the inner and outer rings of the bearing, especially the inner ring of the bearing. Usually, a nut is used to compress the inner ring of the bearing. At the same time, in order to prevent the nut from loosening during operation, a special anti-loosening structure also needs to be designed. With the continuous development of aero-engine technology, higher and higher requirements are put forward for the weight and space of the transmission and support structure. Under the condition of meeting the structural functional performance, it is required that the locking structure occupies as little space as possible and has as light a weight as possible.

[0003] The cup-shaped lock ring locking structure generally consists of a nut, a cup-shaped lock ring, a bearing, and a shaft. First, the inner ring of the bearing is installed on the shaft, and then the cup-shaped lock ring and the nut are installed in sequence so that the cup-shaped lock ring is prevented from rotating by the cooperation of the inner boss and the groove of the shaft. Finally, the lock cup is deformed and embedded into the locking groove of the nut to prevent the nut from rotating.

[0004] At present, there is no method to determine the depth and radius of the lock ring embedded in the nut locking groove after the lock ring of the cup-shaped lock ring locking structure is deformed, so it is difficult to accurately evaluate the strength of the cup-shaped lock ring locking structure. Summary of the Invention

[0005] In order to solve the technical problem that it is difficult to determine the depth and radius of the lock ring embedded in the nut after the lock ring of the cup-shaped lock ring locking structure is deformed, resulting in difficulty in accurately evaluating the structural strength, the present invention discloses a design method for a cup-shaped lock ring locking structure, and the method includes the following steps: S1. Design an initial cup-shaped lock ring and an initial nut according to the engine design requirements, and obtain the initial material of the initial cup-shaped lock ring, the initial structural parameters of the lock ring, and the initial structural parameters of the nut locking groove on the initial nut; S2. Through the finite element simulation method, conduct a static strength evaluation of the initial cup-shaped lock ring based on the initial material and the material yield strength, and correct the initial cup-shaped lock ring according to the static strength evaluation result until a cup-shaped lock ring that meets the material yield strength is obtained; S3. Through the finite element simulation method, obtain the vibration stress reserve of the cup-shaped lock ring, and correct the initial structural parameters of the nut locking groove according to the vibration stress reserve until the structural parameters of the nut locking groove that meet the vibration stress reserve are obtained.

[0006] Further, in the above step S2, through the finite element simulation method, conducting a static strength evaluation of the initial cup-shaped lock ring based on the initial material and the material yield strength includes: S21. Obtain the stress at the locking cup of the initial cup-shaped locking ring at the operating speed through the finite element simulation method; S22. When the stress at the locking cup < the material yield strength, determine that the initial material of the cup-shaped locking ring and the initial structural parameters of the locking ring meet the design requirements; S23. When the stress at the locking cup ≥ the material yield strength, determine that the initial material of the cup-shaped locking ring and the initial structural parameters of the locking ring do not meet the design requirements.

[0007] Furthermore, in the above step S23, the cup-shaped locking ring is corrected by changing the initial material of the cup-shaped locking ring and / or the initial structural parameters of the locking ring, where the initial structural parameters of the cup-shaped locking ring include the locking ring thickness.

[0008] Further, in the above step S3, obtain the vibration stress reserve of the cup-shaped locking ring through the finite element simulation method, including: S31. Determine the deformation depth and deformation radius of the cup-shaped locking ring according to the initial structural parameters of the nut locking groove, and calculate the stress concentration coefficient after the locking ring is deformed according to the deformation depth and the deformation radius; S32. Use the finite element elastoplastic extrusion simulation method to obtain the residual stress of the cup-shaped locking ring at the deformation depth; S33. Obtain the vibration stress reserve corresponding to the stress concentration coefficient after the locking ring is deformed through the difference method according to the material of the cup-shaped locking ring.

[0009] Furthermore, in the above step S31, calculate the stress concentration coefficient after the cup-shaped locking ring is deformed according to the formula kt = 1 + 2*(d / r) 1 / 2 where kt is the stress concentration coefficient, d is the deformation depth, and r is the deformation radius.

[0010] Furthermore, in the above step S33, obtain the vibration stress reserve corresponding to the stress concentration coefficient after the locking ring is deformed through the difference method according to the material of the cup-shaped locking ring, including: S331. Obtain the tensile strength and the high-cycle fatigue strength limit of the material from the material handbook according to the material of the cup-shaped locking ring, and draw the first Goodman curve with a stress concentration coefficient of 1 and the second Goodman curve with a stress concentration coefficient of 3 according to the tensile strength and the high-cycle fatigue strength limit of the material; S332. Draw the third Goodman curve corresponding to the stress concentration coefficient according to the first Goodman curve and the second Goodman curve by the interpolation method, and obtain the allowable vibration stress corresponding to the residual stress according to the third Goodman curve; S333. Calculate the ratio of the allowable vibration stress to the given vibration stress load of the engine cup-shaped locking ring to obtain the vibration stress reserve.

[0011] Further, in the above step S3, the initial structural parameters of the nut locking groove are corrected according to the vibration stress reserve until the structural parameters of the nut locking groove that meet the vibration stress reserve are obtained, including: S34. Compare the vibration stress reserve with the vibration stress reserve threshold. When the vibration stress reserve ≤ the vibration stress reserve threshold, correct the initial structural parameters of the nut locking groove until the structural parameters of the nut locking groove that meet the vibration stress reserve > the vibration stress reserve threshold are obtained.

[0012] The embodiment of the present invention also provides a cup-shaped lock ring locking structure design system, including an initial model design module, a static strength evaluation module, a cup-shaped lock ring correction module, a dynamic strength evaluation module, and a nut locking groove correction module.

[0013] Among them, the initial model design module is used to design an initial cup-shaped lock ring and an initial nut according to the engine design requirements, and obtain the initial material of the initial cup-shaped lock ring, the initial structural parameters of the lock ring, and the initial structural parameters of the nut locking groove on the initial nut; The static strength evaluation module is used to perform static strength evaluation on the initial cup-shaped lock ring by means of finite element simulation according to the initial material and the material yield strength; The cup-shaped lock ring correction module is used to correct the initial cup-shaped lock ring according to the static strength evaluation result until a cup-shaped lock ring that meets the material yield strength is obtained; The dynamic strength evaluation module is used to obtain the vibration stress reserve of the cup-shaped lock ring by means of finite element simulation; The nut locking groove correction module is used to correct the initial structural parameters of the nut locking groove according to the vibration stress reserve until the structural parameters of the nut locking groove that meet the vibration stress reserve are obtained.

[0014] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above technical solutions adopted in the embodiments of the present specification at least include: The cup-shaped lock ring locking structure design method of the present invention first performs static strength evaluation and correction on the designed initial cup-shaped lock ring by means of simulation to obtain a cup-shaped lock ring; then performs dynamic strength analysis on the cup-shaped lock ring by means of simulation to evaluate and correct the initial nut locking groove to obtain the final structural parameters of the nut locking groove. The method of the present invention solves the problem of the lack of an evaluation method in the existing cup-shaped lock ring structure design. This method can determine the locking groove structure (depth and radius) that meets the strength requirements, and improves the reliability and service life of the structure. Description of the Drawings

[0015] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0016] Figure 1 It is a flowchart of the design method of the cup-shaped lock ring locking structure disclosed in the embodiments of the present invention; Figure 2 It is an architecture diagram of the cup-shaped lock ring locking structure design system disclosed in the embodiments of the present invention; Among them, 201 is the initial model design module; 202 is the static strength evaluation module; 203 is the cup-shaped lock ring correction module; 204 is the dynamic strength evaluation module; 205 is the nut locking groove correction module. Specific embodiments

[0017] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0018] The following specific examples illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features of the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0019] The embodiments of the present invention disclose a design method for a cup-shaped lock ring locking structure. Refer to Figure 1 As shown, the method includes the following steps: S1. Design an initial cup-shaped lock ring and an initial nut according to the engine design requirements, and obtain the initial material of the initial cup-shaped lock ring, the initial structure parameters of the lock ring, and the initial structure parameters of the nut locking groove on the initial nut; S2. Through the finite element simulation method, perform static strength evaluation on the initial cup-shaped lock ring based on the initial material and the material yield strength, and correct the initial cup-shaped lock ring according to the static strength evaluation results until a cup-shaped lock ring that meets the material yield strength is obtained; S3. Obtain the vibration stress reserve of the cup-shaped lock ring through the finite element simulation method, and modify the initial structural parameters of the nut locking groove according to the vibration stress reserve until the structural parameters of the nut locking groove that meet the vibration stress reserve are obtained.

[0020] Further, in the above step S1, determine the material and structure of the initial cup-shaped lock ring according to the engine design requirements. For example, select 0Cr18Ni9, and the yield strength σ 0.2 of the material is 205 MPa; the material and structure of the initial nut can be determined according to the material of the initial cup-shaped lock ring. Among them, the materials of the lock ring and the nut are the same. The structure of the nut locking groove mainly determines the depth and radius of the groove, and this structure determines the depth and radius of the deformation of the cup-shaped lock ring. The structure of the lock ring mainly determines the thickness of the lock ring.

[0021] Further, in the above step S2, through the finite element simulation method, conduct a static strength assessment on the initial cup-shaped lock ring based on the initial material and material yield strength, including: S21. Obtain the stress S at the lock cup of the initial cup-shaped lock ring at the working speed through the finite element simulation method. S22. When the stress S at the lock cup < the material yield strength σ 0.2 , it is determined that the initial material of the cup-shaped lock ring and the initial structural parameters of the lock ring meet the design requirements. S23. When the stress S at the lock cup ≥ the material yield strength σ 0.2 , it is determined that the initial material of the cup-shaped lock ring and the initial structural parameters of the lock ring do not meet the design requirements.

[0022] For example, when the diameter of the cup-shaped shrink ring is 40 mm and the working speed is 10,000 r / min, the stress S = 20 MPa at the lock cup can be obtained through the finite element simulation. At this time, S < σ 0.2 , and the design requirements are met, and subsequent dynamic strength analysis can be carried out.

[0023] Furthermore, in the above step S23, modify the cup-shaped lock ring by changing the initial material of the cup-shaped lock ring and / or the initial structural parameters of the lock ring. Among them, the initial structural parameters of the cup-shaped lock ring include the thickness of the lock ring.

[0024] Further, in the above step S3, obtain the vibration stress reserve of the cup-shaped lock ring through the finite element simulation method, including: S31. Determine the deformation depth and deformation radius of the cup-shaped lock ring according to the initial structural parameters of the nut locking groove, and calculate the stress concentration coefficient after the lock ring deformation according to the deformation depth and the deformation radius; specifically, in implementation, the formula kt = 1 + 2 * (d / r) can be used 1 / 2Calculate the stress concentration factor after the deformation of the cup-shaped lock ring, where kt is the stress concentration factor, d is the deformation depth, and r is the deformation radius. For example, when the deformation depth of the cup-shaped lock ring is 2 mm and the deformation radius is 6 mm, the stress concentration factor of this structure can be calculated to be 2.15.

[0025] S32. Adopt the finite element elastoplastic extrusion simulation method to obtain the residual stress S0 of the cup-shaped lock ring at the deformation depth; specifically, when the deformation depth is 2 mm, the residual stress S0 = 420 MPa can be calculated by the simulation method; S33. According to the material of the cup-shaped lock ring, obtain the vibration stress reserve corresponding to the stress concentration factor after the deformation of the lock ring by the difference method.

[0026] Furthermore, in the above step S33, obtaining the vibration stress reserve corresponding to the stress concentration factor after the deformation of the lock ring by the difference method according to the material of the cup-shaped lock ring includes: S331. According to the material of the cup-shaped lock ring, obtain the tensile strength and the high-cycle fatigue strength limit of the material from the material handbook, and draw the first Goodman curve with the stress concentration factor kt = 1 and the second Goodman curve with the stress concentration factor kt = 3 according to the tensile strength and the high-cycle fatigue strength limit of the material.

[0027] S332. According to the first Goodman curve and the second Goodman curve, draw the third Goodman curve corresponding to the stress concentration factor by the interpolation method, and obtain the allowable vibration stress corresponding to the residual stress according to the third Goodman curve . .

[0028] After the first Goodman curve and the second Goodman curve are drawn, the maximum allowable vibration stress corresponding to the stress concentration factor after the deformation of the lock ring can be calculated by the interpolation method ; where the maximum allowable vibration stress is: . Among them, is the high-cycle fatigue strength limit of the material (queried from the material handbook) when kt is equal to 3 and the stress ratio R is -1; is the high-cycle fatigue strength limit of the material when kt is equal to 1 and the stress ratio R is -1; According to the maximum allowable vibration stress and the interpolation of the Goodman curve, the maximum static stress obtained will be used as the tensile strength , and the third Goodman curve corresponding to the stress concentration factor after the deformation of the lock ring can be drawn through the tensile strength . When the residual stress S0 = 420 MPa, the allowable vibration stress About 113 Mpa.

[0029] S333. Calculate the allowable vibration stress and the ratio with the given vibration stress load of the engine cup - shaped lock ring to obtain the vibration stress reserve, which can be expressed by the formula where the vibration stress load of the engine cup - shaped lock ring generally takes a value of recommended value 50 MPa.

[0030] Further, in the above - mentioned step S3, according to the vibration stress reserve, the initial structural parameters of the nut locking groove are corrected until the structural parameters of the nut locking groove that meet the vibration stress reserve are obtained, including: S34. Compare the vibration stress reserve with the vibration stress reserve threshold. When the vibration stress reserve ≤ the vibration stress reserve threshold, correct the initial structural parameters of the nut locking groove until the structural parameters of the nut locking groove that meet the vibration stress reserve > the vibration stress reserve threshold are obtained. In specific implementation, the vibration stress reserve threshold generally takes a value of ≥1.2. For example, when the allowable vibration stress is 113 Mpa, and the value is 50 MPa, the calculated vibration stress reserve is 2.26 (>1.2), and the initial nut locking groove structure meets the design requirements and does not need to be corrected.

[0031] The design method of the cup - shaped lock ring locking structure of the present invention first conducts a static strength evaluation and correction on the designed initial cup - shaped lock ring through a simulation method to obtain the cup - shaped lock ring; then conducts a dynamic strength analysis on the cup - shaped lock ring through a simulation method to evaluate and correct the initial nut locking groove to obtain the final nut locking groove structure. The method of the present invention solves the problem of the lack of an evaluation method in the existing cup - shaped lock ring structure design. This method can determine the locking groove structure (depth and radius) that meets the strength requirements, and improves the reliability and service life of this structure.

[0032] Based on the same inventive concept, an embodiment of the present invention also provides a cup - shaped lock ring locking structure design system as described in the following embodiments. Since the principle of solving problems by the cup - shaped lock ring locking structure design system is similar to the cup - shaped lock ring locking structure design method disclosed in the above - mentioned embodiments, the implementation of the cup - shaped lock ring locking structure design system can refer to the implementation of the cup - shaped lock ring locking structure design method, and the repeated parts will not be elaborated. Hereinafter, the term "unit" or "module" can be a combination of software and / or hardware that can achieve a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware is also possible and contemplated.

[0033] Figure 2It is a structural block diagram of a cup-shaped lock ring locking structure design system disclosed in an embodiment of the present invention. As Figure 2 shown, the system includes an initial model design module 201, a static strength evaluation module 202, a cup-shaped lock ring correction module 203, a dynamic strength evaluation module 204, and a nut locking groove correction module 205. The structure will be described below.

[0034] Among them, the initial model design module 201 is used to design an initial cup-shaped lock ring and an initial nut according to the engine design requirements, and obtain the initial material and the initial structure parameters of the lock ring of the initial cup-shaped lock ring, as well as the initial structure parameters of the nut locking groove on the initial nut; The static strength evaluation module 202 is used to perform a static strength evaluation on the initial cup-shaped lock ring by means of finite element simulation according to the initial material and the material yield strength; The cup-shaped lock ring correction module 203 is used to correct the initial cup-shaped lock ring according to the static strength evaluation result until a cup-shaped lock ring that meets the material yield strength is obtained; The dynamic strength evaluation module 204 is used to obtain the vibration stress reserve of the cup-shaped lock ring by means of finite element simulation; The nut locking groove correction module 205 is used to correct the initial structure parameters of the nut locking groove according to the vibration stress reserve until the structure parameters of the nut locking groove that meet the vibration stress reserve are obtained.

[0035] In this embodiment, a computer device is provided, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, it implements any of the above cup-shaped lock ring locking structure design methods.

[0036] Specifically, the computer device can be a computer terminal, a server, or a similar computing device.

[0037] In this embodiment, a computer-readable storage medium is provided, and the computer-readable storage medium stores a computer program for executing any of the above cup-shaped lock ring locking structure design methods.

[0038] Specifically, a computer-readable storage medium includes permanent and non-permanent, removable and non-removable media that can implement information storage by any method or technology. The information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer-readable storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette tapes, magnetic tape disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to store information accessible by a computing device. As defined herein, a computer-readable storage medium does not include transitory computer-readable media, such as modulated data signals and carrier waves.

[0039] Obviously, those skilled in the art should understand that the various modules or steps of the above embodiments of the present invention can be implemented by a general-purpose computing device. They can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Optionally, they can be implemented by program code executable by the computing device, so that they can be stored in a storage device and executed by the computing device. And in some cases, the steps shown or described can be executed in a different order than here, or they can be separately fabricated into individual integrated circuit modules, or multiple modules or steps of them can be fabricated into a single integrated circuit module to implement. Thus, the embodiments of the present invention are not limited to any specific combination of hardware and software.

[0040] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the embodiments of the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A design method for the locking structure of a cup-shaped lock ring, characterized in that, Including: Design an initial cup-shaped lock ring and an initial nut according to the engine design requirements, and obtain the initial material of the initial cup-shaped lock ring, the initial structural parameters of the lock ring, and the initial structural parameters of the nut locking groove on the initial nut; By means of finite element simulation, conduct a static strength evaluation of the initial cup-shaped lock ring based on the initial material and the material yield strength, and modify the initial cup-shaped lock ring according to the static strength evaluation results until a cup-shaped lock ring that meets the material yield strength is obtained; Obtain the vibration stress reserve of the cup-shaped lock ring through finite element simulation, and modify the initial structural parameters of the nut locking groove according to the vibration stress reserve until the structural parameters of the nut locking groove that meet the vibration stress reserve are obtained.

2. The design method of the cup-shaped lock ring locking structure according to claim 1, characterized in that Conduct a static strength evaluation of the initial cup-shaped lock ring by means of finite element simulation based on the initial material and the material yield strength, including: Obtain the stress at the lock cup of the initial cup-shaped lock ring at the operating speed through finite element simulation; When the stress at the lock cup < the material yield strength, determine that the initial material of the cup-shaped lock ring and the initial structural parameters of the lock ring meet the design requirements; When the stress at the lock cup ≥ the material yield strength, determine that the initial material of the cup-shaped lock ring and the initial structural parameters of the lock ring do not meet the design requirements.

3. The design method of the cup-shaped lock ring locking structure according to claim 1 or 2, characterized in that Modify the cup-shaped lock ring by changing the initial material of the cup-shaped lock ring and / or the initial structural parameters of the lock ring, wherein the initial structural parameters of the cup-shaped lock ring include the lock ring thickness.

4. The design method of the cup-shaped lock ring locking structure according to claim 1, characterized in that, Obtain the vibration stress reserve of the cup-shaped lock ring through finite element simulation, including: Determine the deformation depth and deformation radius of the cup-shaped lock ring based on the initial structural parameters of the nut locking groove, and calculate the stress concentration coefficient after the lock ring deformation according to the deformation depth and the deformation radius; Adopt the finite element elastoplastic extrusion simulation method to obtain the residual stress of the cup-shaped lock ring at the deformation depth; Obtain the vibration stress reserve corresponding to the stress concentration coefficient after the lock ring deformation by means of the difference method according to the material of the cup-shaped lock ring.

5. The design method of the cup-shaped lock ring locking structure according to claim 4, characterized in that, According to the formula kt = 1 + 2*(d / r) 1 / 2 Calculate the stress concentration factor after the deformation of the cup-shaped lock ring, where kt is the stress concentration factor, d is the deformation depth, and r is the deformation radius.

6. The design method of the cup-shaped lock ring locking structure according to claim 4, characterized in that Obtain the vibration stress reserve corresponding to the stress concentration coefficient after the lock ring deformation by means of the difference method according to the material of the cup-shaped lock ring, including: According to the material of the cup-shaped lock ring, obtain the tensile strength and the high-cycle fatigue strength limit of the material from the material handbook, and draw a first Goodman curve with a stress concentration coefficient of 1 and a second Goodman curve with a stress concentration coefficient of 3 according to the tensile strength and the high-cycle fatigue strength limit of the material; Draw a third Goodman curve corresponding to the stress concentration coefficient according to the first Goodman curve and the second Goodman curve by means of interpolation, and obtain the allowable vibration stress corresponding to the residual stress according to the third Goodman curve; Calculate the ratio of the allowable vibration stress to the given vibration stress load of the engine cup-shaped lock ring to obtain the vibration stress reserve.

7. The design method of the cup-shaped lock ring locking structure according to claim 1, characterized in that Modify the initial structural parameters of the nut locking groove according to the vibration stress reserve until the structural parameters of the nut locking groove that meet the vibration stress reserve are obtained, including: Compare the vibration stress reserve with the vibration stress reserve threshold. When the vibration stress reserve ≤ the vibration stress reserve threshold, correct the initial structural parameters of the nut locking groove until the structural parameters of the nut locking groove that satisfy the vibration stress reserve > the vibration stress reserve threshold are obtained.

8. A locking structure design system for a cup-shaped lock ring, characterized in that It includes: An initial model design module, which is used to design an initial cup-shaped lock ring and an initial nut according to the engine design requirements, and obtain the initial material and the initial structural parameters of the lock ring of the initial cup-shaped lock ring and the initial structural parameters of the nut locking groove on the initial nut; A static strength evaluation module, which is used to evaluate the static strength of the initial cup-shaped lock ring by means of finite element simulation according to the initial material and the material yield strength; A cup-shaped lock ring correction module, which is used to correct the initial cup-shaped lock ring according to the static strength evaluation result until a cup-shaped lock ring that satisfies the material yield strength is obtained; A dynamic strength evaluation module, which is used to obtain the vibration stress reserve of the cup-shaped lock ring by means of finite element simulation; A nut locking groove correction module, which is used to correct the initial structural parameters of the nut locking groove according to the vibration stress reserve until the structural parameters of the nut locking groove that satisfy the vibration stress reserve are obtained.

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