Friction torque transmission evaluation method and system for spigot connection rotor

Abstract

The invention relates to the technical field of aero-engines, and discloses a method and a system for evaluating friction torque transmission of a spigot connection rotor. The sum of the torque transmitted by friction of the axial end face of the mounting edge and the minimum torque transmitted by friction of the spigot part is matched with the lower limit value of the friction transmission torque of the spigot connection rotor in a typical state, and the lower limit value serves as an evaluation basis for the torque transmission capacity of the rotor to meet the requirement. The friction transmission torque of the rotor is ensured to meet the design requirement of an advanced engine on a high thrust-weight ratio, the torque transmission reliability of the rotor is ensured, the working stress of the connecting structure can be effectively reduced, and the risk of failure of a connecting piece in the working process is reduced; according to the lower limit value of the friction transmission torque, the friction transmission torque of the end face of the mounting edge and the friction transmission torque of the cylindrical surface of the spigot are considered, the actual condition of the friction transmission torque of the rotor can be well reflected, the torque transmission design of the spigot connection rotor is more reasonably guided, and the problem of redundant structural design of the rotor is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of aero-engines, and discloses a method and system for evaluating the friction torque transmission of a rotor with a spigot connection. Background Art

[0002] The short-bolt connection rotor structure with a cylindrical spigot is a connection structure widely used on advanced domestic and foreign aero-engine rotors. Its main functions are to connect adjacent rotors together, transmit torque and axial force, etc., and use the cylindrical spigot with tightness to ensure the centering between rotors. For the short-bolt rotor connection structure, the initial pre-tightening force of the bolts should be high enough to ensure reliable torque transmission during the operation of the rotor. However, at the same time, it is necessary to prevent the bolts from failing due to excessive stress when the pre-tightening force is too large.

[0003] The existing engineering evaluation methods for torque transmission of rotors with spigot connections only consider the friction torque transmission at the end face of the axial mounting edge and do not consider the contribution of the cylindrical spigot in the radial direction. However, for the short-bolt connection structure with a cylindrical spigot, in order to ensure the stability and reliability of the rotor, there is usually a large extrusion force on the cylindrical spigot during the operation of the rotor, and the torque transmitted through the cylindrical spigot cannot be ignored. Usually, measures such as increasing the initial pre-tightening force of the bolts or increasing the number of bolts are taken to ensure reliable torque transmission. When ensuring torque transmission by increasing the initial pre-tightening force of the bolts, it may cause the working load borne by the bolts to be too large, posing a risk of bolt failure and creating a safety hazard to the operation of the engine. When increasing the number of bolts to ensure torque transmission, it will increase the load of the rotor, reduce the bearing area of the rotor, have an adverse impact on the strength and fatigue life of the rotor, and increase the weight of the rotor, not meeting the control requirements of the weight index for advanced engines. In addition, it has been verified by experiments that for the short-bolt connection structure with a cylindrical spigot, the current engineering evaluation method for torque transmission design is too conservative and is not conducive to the design requirements of advanced engines for high reliability and high thrust-to-weight ratio. Summary of the Invention

[0004] The purpose of the present invention is to provide a method and system for evaluating the friction torque transmission of a rotor with a spigot connection, which can ensure reliable torque transmission of the rotor, effectively reduce the working stress of the connection structure, and reduce the risk of failure of the connecting parts during the working process; and can more reasonably guide the torque transmission design of the rotor with a spigot connection, effectively avoiding the problem of redundant design of the rotor structure.

[0005] In order to achieve the above technical effects, the technical solution adopted by the present invention is: A method for evaluating the friction torque transmission of a rotor with a spigot connection, comprising: According to the initially determined structural parameters and load parameters of the rotor and the connecting piece, analyze and obtain the torque transmitted by the axial end face friction of the mounting edge; the rotor includes a first rotor part and a second rotor part arranged coaxially, the first rotor part is provided with a first mounting edge, the second rotor part is provided with a second mounting edge, the first mounting edge and the second mounting edge are coaxially connected by bolts, the second mounting edge is provided with a stop in the radial direction, and the radial edge of the first mounting edge is in interference fit with the stop; According to the minimum diameter designed for the radial edge of the first mounting edge and the maximum radial height designed for the stop, analyze and obtain the minimum interference amount in the radial direction of the mating stop; Adopt a two-dimensional axisymmetric model to conduct a linear elastic finite element analysis on the structure of the rotor and the connecting piece, and respectively obtain the steady-state extrusion force and the transient extrusion force at the mating stop part in the typical state; among them, the mating stop part is simulated by a contact element, the stop is set as the target surface, the radial edge part of the first mounting edge is set as the contact surface, and the minimum interference amount data is applied to the mating stop part; According to the minimum value among the steady-state extrusion force and the transient extrusion force, as well as the end face friction coefficient and the rotational radius of the mating stop part, analyze and obtain the minimum torque transmitted by the friction of the mating stop part; Determine the sum of the torque transmitted by the axial end face friction of the mounting edge and the minimum torque transmitted by the friction of the mating stop part as the lower limit value of the friction transmission torque of the stop-connected rotor in the typical state; Compare the lower limit value of the friction transmission torque of the stop-connected rotor in the typical state with the working torque of the mounting edge in the corresponding state. If the lower limit value of the friction transmission torque is greater than the working torque of the mounting edge in the corresponding state, the torque transmission capacity of the rotor meets the design requirements.

[0006] Furthermore, the torque transmitted by the axial end face friction of the mounting edge , where is the radius of the bolt hole pitch circle, is the axial pressing end face friction coefficient between the first rotor part and the second rotor part, is the effective clamping force of the bolt, is the number of bolts, is the axial separation load borne by the mounting edge during operation.

[0007] Furthermore, the minimum interference amount in the radial direction of the mating stop , where is the minimum diameter designed for the radial edge of the first mounting edge, is the maximum radial height designed for the stop.

[0008] Further, the method for obtaining the extrusion force in the steady state and the extrusion force in the transient state of the typical state at the mating spigot part by performing linear elastic finite element analysis on the rotor and connecting part structure using a two-dimensional axisymmetric model includes: Set the spigot as the target surface, set the radial edge part of the first mounting edge as the contact surface, apply the minimum interference amount data to the mating spigot part, and use contact elements for simulation analysis to obtain the two-dimensional rotor finite element stress distributions in the steady state and transient state of the typical state respectively; According to the two-dimensional rotor finite element stress distributions in the corresponding states, extract the reaction force results of each node within the length of the rotor mating spigot in each state respectively, and obtain the extrusion force in the steady state and the extrusion force in the transient state of the mating spigot by summing up the reaction forces of all nodes of the mating spigot.

[0009] Further, the minimum torque transmitted by friction at the mating spigot part , where is the end face friction coefficient of the mating spigot part, is the minimum value of the extrusion force in the steady state and the extrusion force in the transient state, is the radius of gyration of the mating spigot part.

[0010] To achieve the above technical effects, the present invention also provides a system for evaluating the friction torque transmission of a spigot-connected rotor, including: A first analysis module for analyzing and obtaining the torque transmitted by friction at the axial end face of the mounting edge according to the preliminarily determined structural parameters and load parameters of the rotor and connecting parts; the rotor includes a first rotor part and a second rotor part arranged coaxially, the first rotor part is provided with a first mounting edge, the second rotor part is provided with a second mounting edge, the first mounting edge and the second mounting edge are coaxially connected by bolts, the second mounting edge is provided with a spigot in the radial direction, and the radial edge of the first mounting edge is in interference fit with the spigot; An interference amount determination module for analyzing and obtaining the minimum interference amount in the radial direction of the mating spigot according to the designed minimum diameter of the radial edge of the first mounting edge and the designed maximum radial height of the spigot; An extrusion force analysis module for performing linear elastic finite element analysis on the rotor and connecting part structure using a two-dimensional axisymmetric model to obtain the extrusion force in the steady state and the extrusion force in the transient state of the mating spigot part in the typical state respectively; wherein, the mating spigot part is simulated using contact elements, the spigot is set as the target surface, the radial edge part of the first mounting edge is set as the contact surface, and the minimum interference amount data is applied to the mating spigot part; A second analysis module for analyzing and obtaining the minimum torque transmitted by friction at the mating spigot part according to the minimum value of the extrusion force in the steady state and the extrusion force in the transient state, as well as the end face friction coefficient of the mating spigot part and the radius of gyration of the mating spigot part; The third analysis module is used to determine that the sum of the torque transmitted by friction at the axial end face of the mounting edge and the minimum torque transmitted by friction at the mating spigot part is the lower limit value of the friction transmission torque of the spigot-connected rotor in the typical state; The judgment module is used to compare the lower limit value of the friction transmission torque of the spigot-connected rotor in the typical state with the working torque of the mounting edge in the corresponding state. If the lower limit value of the friction transmission torque is greater than the working torque of the mounting edge in the corresponding state, the torque transmission capacity of the rotor meets the design requirements.

[0011] Further, in the first analysis module, the torque transmitted by friction at the axial end face of the mounting edge , where is the radius of the bolt hole pitch circle, is the friction coefficient of the axial pressing end face of the first rotor part and the second rotor part, is the effective clamping force of the bolt, is the number of bolts, is the axial separation load borne by the mounting edge during operation.

[0012] Further, in the interference amount determination module, the minimum interference amount in the radial direction of the mating spigot , where is the minimum designed diameter of the radial edge of the first mounting edge, is the maximum designed radial height of the spigot.

[0013] Further, in the extrusion force analysis module, by setting the spigot as the target surface and the radial edge part of the first mounting edge as the contact surface, applying the minimum interference amount data to the mating spigot part, and using contact elements for simulation analysis, the two-dimensional rotor finite element stress distributions in the steady state and transient state of the typical state are obtained respectively; According to the two-dimensional rotor finite element stress distributions in the corresponding states, the reaction force results of each node within the length of the rotor mating spigot are extracted respectively, and the extrusion force in the steady state and the extrusion force in the transient state of the mating spigot are obtained respectively by summing up the reaction forces of all nodes of the mating spigot.

[0014] Further, in the second analysis module, the minimum torque transmitted by friction at the mating spigot part , where is the end face friction coefficient of the mating spigot part, is the minimum value of the extrusion force in the steady state and the extrusion force in the transient state, is the radius of gyration of the mating spigot part.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The present invention takes the torque transmitted by friction at the axial end face of the mounting edge The minimum torque for frictional transmission at the mating spigot part The sum thereof is the lower limit of the frictional transmission torque when the spigot connects the rotor in the typical state This is used as the evaluation basis for the rotor's torque transmission ability to meet the requirements, which can ensure that the rotor's frictional transmission torque meets the design requirements of advanced engines for high thrust-to-weight ratio, guarantee reliable torque transmission of the rotor, effectively reduce the working stress of the connection structure, and reduce the risk of failure of the connecting parts during operation; the lower limit of the frictional transmission torque takes into account both the frictional torque transmission at the end face of the mounting flange and the frictional torque transmission at the cylindrical surface of the spigot, can better reflect the actual situation of the rotor's frictional transmission torque, more reasonably guide the torque transmission design of the spigot-connected rotor, and effectively avoid the problem of redundant rotor structure design. Description of the Drawings

[0016] Figure 1 It is the flow chart of the method for evaluating the frictional torque transmission of the spigot-connected rotor in Embodiment 1 or 2; Figure 2 It is the structural schematic diagram of the rotor and the connecting parts in Embodiment 1 or 2; Figure 3 It is the structural schematic diagram of the first rotor part in Embodiment 1 or 2; Figure 4 It is the structural schematic diagram of the second rotor part in Embodiment 1 or 2; Figure 5 It is the structural block diagram of the system for evaluating the frictional torque transmission of the spigot-connected rotor in Embodiment 1; Among them, 1. The first rotor part; 101. The first mounting flange; 2. The second rotor part; 201. The second mounting flange; 202. The spigot; 3. The bolt; 4. The first analysis module; 5. The interference amount determination module; 6. The extrusion force analysis module; 7. The second analysis module; 8. The third analysis module; 9. The judgment module. Detailed Embodiment

[0017] The present invention will be further described in detail below in conjunction with the embodiments and the drawings. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. Any technology implemented based on the content of the present invention belongs to the scope of the present invention.

[0018] Embodiment 1 Refer to Figures 1 - 5 , a method for evaluating the frictional torque transmission of a spigot-connected rotor, including: According to the initially determined structural parameters and load parameters of the rotor and the connecting piece, analyze and obtain the torque transmitted by the axial end face friction of the mounting edge; the rotor includes a first rotor member 1 and a second rotor member 2 arranged coaxially, the first rotor member 1 is provided with a first mounting edge 101, the second rotor member 2 is provided with a second mounting edge 201, the first mounting edge 101 and the second mounting edge 201 are coaxially connected by a bolt 3, the second mounting edge 201 is provided with a stop 202 in the radial direction, and the radial edge of the first mounting edge 101 is in interference fit with the stop 202; According to the minimum diameter designed for the radial edge of the first mounting edge 101 and the maximum radial height designed for the stop 202, analyze and obtain the minimum interference amount in the radial direction of the mating stop part; ; Adopt a two-dimensional axisymmetric model to conduct a linear elastic finite element analysis on the rotor and connecting piece structures, and respectively obtain the steady-state extrusion force and transient extrusion force of the mating stop part in the typical state; and the transient extrusion force of the typical state; Among them, the mating stop part is simulated by a contact unit, the stop 202 is set as the target surface, the radial edge part of the first mounting edge 101 is set as the contact surface, and the minimum interference amount is applied to the mating stop part; data; According to the minimum value of the steady-state extrusion force , the transient extrusion force , as well as the end face friction coefficient of the mating stop part , the gyration radius of the mating stop part , analyze and obtain the minimum torque transmitted by the friction of the mating stop part; ; Determine the torque transmitted by the axial end face friction of the mounting edge , the minimum torque transmitted by the friction of the mating stop part , and the sum of them is the lower limit value of the friction transmission torque of the stop 202 connecting the rotor in the typical state; ; Compare the lower limit value of the friction transmission torque of the stop 202 connecting the rotor in the typical state with the working torque of the mounting edge in the corresponding state . If , then the torque transmission capacity of the rotor meets the design requirements.

[0019] In this embodiment, by setting the stop 202 as the target surface, the radial edge part of the first mounting edge 101 as the contact surface, and then applying the interference amount data to the mating stop part, a two-dimensional axisymmetric model is used to conduct a linear elastic finite element analysis on the rotor and connecting piece structures, and the steady-state extrusion force and transient extrusion force of the mating stop part in the typical state are obtained; and the transient extrusion force of the typical state; ; wherein the interference amount data takes into account the minimum radial dimension of the radial edge design of the first mounting edge 101 and the maximum radial dimension of the design of the stop 202, and more accurately simulates the stress distribution of the rotor and the connecting member under actual working conditions. Then, according to the extrusion force under steady state and the extrusion force under transient state, the minimum torque transmitted by friction at the mating stop part is analyzed and obtained . Finally, taking the sum of the torque transmitted by friction at the axial end face of the mounting edge and the minimum torque transmitted by friction at the mating stop part as the lower limit value of the friction transmission torque of the stop 202 connecting the rotor in the typical state , which is used as the evaluation basis for the rotor's torque transmission ability to meet the requirements. Ensure that the friction transmission torque of the rotor meets the design requirements of advanced engines for high thrust-to-weight ratio, effectively reduce the working stress of the connecting structure while ensuring reliable torque transmission of the rotor, and reduce the risk of failure of the connecting member during the working process; this lower limit value of the friction transmission torque takes into account both the friction torque transmission at the end face of the mounting edge and the friction torque transmission at the cylindrical surface of the stop 202, can better reflect the actual situation of the friction transmission torque of the rotor, more reasonably guide the torque transmission design of the stop 202 connecting the rotor, and effectively avoid the problem of redundant rotor structure design.

[0020] Based on the same inventive concept, this embodiment also provides a friction torque transmission evaluation system for the stop 202 connecting the rotor, including: The first analysis module 4 is used to analyze and obtain the torque transmitted by friction at the axial end face of the mounting edge according to the preliminarily determined structural parameters and load parameters of the rotor and the connecting member; the rotor includes a first rotor member 1 and a second rotor member 2 arranged coaxially, the first rotor member 1 is provided with a first mounting edge 101, the second rotor member 2 is provided with a second mounting edge 201, the first mounting edge 101 and the second mounting edge 201 are coaxially connected by a bolt 3, the second mounting edge 201 is provided with a stop 202 in the radial direction, and the radial edge of the first mounting edge 101 is in interference fit with the stop 202; The interference amount determination module 5 is used to analyze and obtain the minimum interference amount in the radial direction of the mating stop part according to the minimum designed diameter of the radial edge of the first mounting edge 101 and the maximum designed radial height of the stop 202 ; The extrusion force analysis module 6 is used to perform linear elastic finite element analysis on the rotor and the connecting member structure by using a two-dimensional axisymmetric model, and respectively obtain the extrusion force under steady state and the extrusion force ; wherein, the mating spigot part is simulated by a contact unit, the spigot 202 is set as the target surface, the radial edge part of the first mounting edge 101 is set as the contact surface, and the minimum interference amount is applied to the mating spigot part Data; The second analysis module 7 is used to analyze, according to the minimum value of the extrusion force under the steady state , the extrusion force under the transient state , the end face friction coefficient of the mating spigot part , and the gyration radius of the mating spigot part , to obtain the minimum torque transmitted by friction of the mating spigot part ; The third analysis module 8 is used to determine the torque transmitted by friction at the axial end face of the mounting edge , and the sum of the minimum torque transmitted by friction of the mating spigot part is the lower limit of the friction transmission torque of the spigot 202 connecting the rotor in the typical state ; The judgment module 9 is used to compare the lower limit of the friction transmission torque of the spigot 202 connecting the rotor in the typical state with the working torque of the mounting edge in the corresponding state . If , the torque transmission capacity of the rotor meets the design requirements.

[0021] Embodiment 2 Refer to Figures 1 - 4 , a method for evaluating the friction torque transmission of a spigot 202 connecting a rotor, including: Step 1: Analyze and obtain the torque transmitted by friction at the axial end face of the mounting edge according to the preliminarily determined structural parameters and load parameters of the rotor and the connecting piece; the rotor includes a first rotor part 1 and a second rotor part 2 arranged coaxially, the first rotor part 1 is provided with a first mounting edge 101, the second rotor part 2 is provided with a second mounting edge 201, the first mounting edge 101 and the second mounting edge 201 are coaxially connected by a bolt 3, the second mounting edge 201 is provided with a spigot 202 in the radial direction, and the radial edge of the first mounting edge 101 is in interference fit with the spigot 202; In this embodiment, according to the preliminarily determined structural parameters and load parameters of the rotor and the connecting piece, the is used to analyze and obtain the torque transmitted by friction at the axial end face of the mounting edge , where is the pitch circle radius of the bolt 3 holes, is the axial pressing end face friction coefficient of the first rotor part and the second rotor part, is the effective clamping force of the bolt 3, is the number of bolts 3, is the axial separation load borne by the mounting edge during operation.

[0022] Step 2: Analyze and obtain the minimum interference in the radial direction of the mating counterbore part based on the minimum designed diameter of the radial edge of the first mounting edge 101 and the maximum designed radial height of the counterbore 202. ; In this embodiment, the minimum interference in the radial direction of the mating counterbore part , where is the minimum designed diameter of the radial edge of the first mounting edge 101, is the maximum designed radial height of the counterbore 202.

[0023] Step 3: Conduct a linear elastic finite element analysis on the rotor and connector structure using a two-dimensional axisymmetric model, and respectively obtain the steady-state extrusion force and the transient extrusion force at the typical state of the mating counterbore part; among them, the mating counterbore part is simulated using a contact element, and the minimum interference data is applied to the mating counterbore part. In this embodiment, when dividing the finite element model grid of the rotor and connector structure, the number of elements in the length direction of the mating counterbore part should be no less than 5 layers, and the node positions in the mating counterbore part should be kept as consistent as possible; in the finite element model, the mating counterbore part is simulated using a contact element. Generally, the counterbore 202 is set as the target surface, and the radial edge part of the first mounting edge 101 is set as the contact surface. The interference determined in Step 2 data is applied to the mating counterbore part. The analysis states include but are not limited to the steady-state idle speed and the steady-state maximum state. In addition, typical transient loads such as fast push at idle speed maximum and fast pull at maximum to idle speed need to be considered to obtain the two-dimensional rotor finite element stress results.

[0024] In the obtained two-dimensional rotor finite element stress results, respectively extract the reaction force results of each node within the length of the rotor mating counterbore part in each state, and sum up the reaction forces of all nodes in the mating counterbore part to obtain the extrusion force of the mating counterbore part; furthermore, the extrusion force results in the steady state and the extrusion force results in the transient state of the mating counterbore part can be respectively obtained (in this embodiment, the lowest extrusion force value of the counterbore 202 at the same rotational speed can be used as the transient extrusion force result).

[0025] Step 4: According to the minimum value of the steady-state extrusion force , the transient extrusion force , as well as the end face friction coefficient of the mating counterbore part and the gyration radius of the mating counterbore part Analyze to obtain the minimum torque for frictional transmission at the mating spigot portion ; In this embodiment, the minimum torque for frictional transmission at the mating spigot portion , where is the frictional coefficient of the end face of the mating spigot portion, is the extrusion pressure under the steady state and the extrusion pressure under the transient state is the minimum value among them, is the radius of gyration of the mating spigot portion.

[0026] Step Five: Determine the torque for frictional transmission at the axial end face of the mounting edge and the minimum torque for frictional transmission at the mating spigot portion The sum is the lower limit of the frictional transmission torque of the spigot 202 connecting the rotor in the typical state .

[0027] Step Six: Compare the lower limit of the frictional transmission torque of the spigot 202 connecting the rotor in the typical state with the working torque of the mounting edge in the corresponding state If , the torque transmission capacity of the rotor meets the design requirements; otherwise, the structure of the mating spigot portion needs to be improved, and then repeat the work content of Steps One to Six until .

[0028] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for evaluating friction torque transmission of a stopper-connected rotor, characterized in that: include: According to the structural parameters and load parameters of the rotor and the connecting member determined initially, the torque transmitted by the friction of the axial end surface of the mounting edge is analyzed and obtained; the rotor comprises a first rotor member and a second rotor member arranged coaxially, the first rotor member is provided with a first mounting edge, the second rotor member is provided with a second mounting edge, the first mounting edge and the second mounting edge are coaxially connected by bolts, the second mounting edge is provided with a stopper in the radial direction, and the radial edge of the first mounting edge is interference fit with the stopper; According to the designed minimum diameter of the radial edge of the first mounting edge and the designed maximum radial height of the stopper, the minimum interference in the radial direction of the stopper is analyzed and obtained; A linear elastic finite element analysis is performed on the rotor and connector structure using a two-dimensional axisymmetric model to obtain the extrusion pressure of the mating stop in a typical steady state and the extrusion pressure of the typical transient state respectively; wherein the mating stop is simulated using a contact unit, the stop is set as a target surface, the radial edge of the first mounting edge is set as a contact surface, and the minimum interference amount data is applied to the mating stop; According to the minimum value of the extrusion pressure in the steady state and the extrusion pressure in the transient state, as well as the end surface friction coefficient of the mating stop part and the turning radius of the mating stop part, the minimum torque transmitted by the friction of the mating stop part is analyzed and obtained; Determine the sum of the torque transmitted by the axial end face friction of the mounting edge and the minimum torque transmitted by the friction of the mating stopper as the lower limit of the friction transmission torque of the stopper-connected rotor in a typical state; The lower limit value of the friction transmission torque of the stop-connected rotor under typical conditions is compared with the working torque of the mounting side under the corresponding conditions. If the lower limit value of the friction transmission torque is greater than the working torque of the mounting side under the corresponding conditions, the rotor torque transmission capacity meets the design requirements.

2. The method for evaluating friction torque transmission of a stopper-connected rotor according to claim 1, characterized in that: Torque transmitted by friction of the axial end face of the mounting edge ,in is the pitch circle radius of the bolt hole, is the axial compression end surface friction coefficient of the first rotor member and the second rotor member, is the effective clamping force of the bolt, is the number of bolts, It is the axial separation load borne by the mounting side when working.

3. The method for evaluating friction torque transmission of a stopper-connected rotor according to claim 1, characterized in that: Minimum interference in the direction of the stop radius ,in Design the minimum diameter for the radial edge of the first mounting edge, The maximum radial height designed for the stop.

4. The method for evaluating friction torque transmission of a stopper-connected rotor according to claim 1, characterized in that: The linear elastic finite element analysis of the rotor and the connector structure is performed using a two-dimensional axisymmetric model. The methods for obtaining the extrusion pressure of the mating stop in a typical steady state and the extrusion pressure in a typical transient state include: The stopper is set as the target surface, the radial edge of the first mounting edge is set as the contact surface, the minimum interference data is applied to the stopper, and a contact unit simulation analysis is performed to obtain the two-dimensional rotor finite element stress distribution under typical steady-state and transient conditions respectively; According to the finite element stress distribution of the two-dimensional rotor under the corresponding state, the support reaction force results of each node within the rotor fitting length under each state are extracted respectively. By summing the support reaction forces of all nodes of the fitting, the extrusion pressure of the fitting under steady state and transient state are obtained respectively.

5. The method for evaluating friction torque transmission of a stopper-connected rotor according to claim 1, characterized in that: Minimum torque transmitted by friction at the mating stop ,in To match the friction coefficient of the end surface of the stopper, is the minimum value of the extrusion pressure in the steady state and the extrusion pressure in the transient state, To match the turning radius of the stop part.

6. A stopper-connected rotor friction torque transmission evaluation system, characterized in that: include: A first analysis module is used to analyze and obtain the torque transmitted by the axial end face friction of the mounting edge according to the structural parameters and load parameters of the rotor and the connecting member that are preliminarily determined; the rotor comprises a first rotor member and a second rotor member that are coaxially arranged, the first rotor member is provided with a first mounting edge, the second rotor member is provided with a second mounting edge, the first mounting edge and the second mounting edge are coaxially connected by bolts, the second mounting edge is provided with a stopper in a radial direction, and a radial edge of the first mounting edge is interference fit with the stopper; An interference determination module is used to analyze and obtain the minimum interference in the radial direction of the mating stop according to the designed minimum diameter of the radial edge of the first mounting edge and the designed maximum radial height of the stop; An extrusion pressure analysis module is used to perform a linear elastic finite element analysis on the rotor and connector structure using a two-dimensional axisymmetric model, and obtain the extrusion pressure of the mating stop portion under a typical steady state and a typical transient state, respectively; wherein the mating stop portion is simulated using a contact unit, the stop is set as a target surface, the radial edge of the first mounting edge is set as a contact surface, and the minimum interference amount data is applied to the mating stop portion; The second analysis module is used to analyze and obtain the minimum torque transmitted by friction at the mating stop part according to the minimum value of the extrusion pressure in the steady state and the extrusion pressure in the transient state, the end surface friction coefficient of the mating stop part, and the turning radius of the mating stop part; The third analysis module is used to determine the sum of the torque transmitted by the friction of the axial end face of the mounting edge and the minimum torque transmitted by the friction of the matching stopper portion as the lower limit of the friction transmission torque of the stopper-connected rotor in a typical state; The judgment module is used to compare the lower limit value of the friction transmission torque of the stop-connected rotor in a typical state with the working torque of the mounting side in a corresponding state. If the lower limit value of the friction transmission torque is greater than the working torque of the mounting side in the corresponding state, the rotor torque transmission capacity meets the design requirements.

7. The stopper-connected rotor friction torque evaluation system according to claim 6, characterized in that: In the first analysis module, the torque transmitted by the axial end face friction of the mounting edge ,in is the pitch circle radius of the bolt hole, is the axial compression end surface friction coefficient of the first rotor member and the second rotor member, is the effective clamping force of the bolt, is the number of bolts, It is the axial separation load borne by the mounting side when working.

8. The stopper connection rotor friction torque evaluation system according to claim 6, characterized in that: In the interference determination module, the minimum interference in the direction of the stopper radius ,in Design the minimum diameter for the radial edge of the first mounting edge, The maximum radial height designed for the stop.

9. The stopper connection rotor friction torque evaluation system according to claim 6, characterized in that: In the extrusion force analysis module, by setting the stop as the target surface, setting the radial edge of the first mounting edge as the contact surface, applying the minimum interference data at the stop, and using contact unit simulation analysis, the two-dimensional rotor finite element stress distribution in the steady state and transient state of the typical state is obtained respectively; According to the finite element stress distribution of the two-dimensional rotor under the corresponding state, the support reaction force results of each node within the rotor fitting length under each state are extracted respectively. By summing the support reaction forces of all nodes of the fitting, the extrusion pressure of the fitting under steady state and transient state are obtained respectively.

10. The stopper connection rotor friction torque evaluation system according to claim 6, characterized in that: In the second analysis module, the minimum torque transmitted by friction at the stopper ,in To match the friction coefficient of the end surface of the stopper, is the minimum value of the extrusion pressure in the steady state and the extrusion pressure in the transient state, To match the turning radius of the stop part.

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