CN115615657A - Train vibration simulation method and device, vibration test stand and readable storage medium - Google Patents
Train vibration simulation method and device, vibration test stand and readable storage medium Download PDFInfo
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- CN115615657A CN115615657A CN202211245663.0A CN202211245663A CN115615657A CN 115615657 A CN115615657 A CN 115615657A CN 202211245663 A CN202211245663 A CN 202211245663A CN 115615657 A CN115615657 A CN 115615657A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/08—Aerodynamic models
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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Abstract
The invention discloses a train vibration simulation method and device, a vibration test bed and a computer readable storage medium, belongs to the field of rail vehicles, and is used for train vibration simulation. Considering that the running attitude of the rail vehicle is changed under the action of the aerodynamic force, and the running attitude of the rail vehicle is changed to bring the change of the aerodynamic force, and the coupling relationship exists between the running attitude and the aerodynamic force, therefore, after the aerodynamic force applied to the rail vehicle corresponding to the current attitude of the rail vehicle is loaded to the rail vehicle, new aerodynamic force can be determined again according to the attitude change of the rail vehicle and loaded to the rail vehicle, the state change of the rail vehicle under the action of the aerodynamic force in the actual running process is more approximate, the vibration condition of the rail vehicle under the real running condition can be more accurately verified, and the potential safety hazard can be eliminated.
Description
Technical Field
The invention relates to the field of rail vehicles, in particular to a train vibration simulation method, and further relates to a train vibration simulation device, a vibration test bed and a computer readable storage medium.
Background
In order to verify the reliability of the rail vehicle before the rail vehicle is put into operation formally, the rail vehicle needs to be verified in many aspects, for example, vibration simulation is performed on a running system of the rail vehicle to analyze the vibration condition of the running system, however, in the running process of the rail vehicle (especially a high-speed maglev train), the coupling relationship between the vehicle vibration and the aerodynamic force is complex, the train vibration is difficult to be simulated accurately, and a mature train vibration simulation method is lacked in the prior art, so that the vibration condition of the rail vehicle under the real running condition cannot be verified accurately, and potential safety hazards exist.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a vehicle vibration simulation method, wherein the simulation process is close to the state change of a railway vehicle under the action of aerodynamic force in actual operation, so that the vibration condition of the railway vehicle under the actual operation condition can be more accurately verified, and the potential safety hazard can be eliminated; another object of the present invention is to provide a train vibration simulation apparatus, a vibration test bed and a computer readable storage medium, wherein the simulation process is close to the state change of the rail vehicle under the action of aerodynamic force during actual operation, so that the vibration condition of the rail vehicle under the actual operation condition can be verified more accurately, and the elimination of potential safety hazards is facilitated.
In order to solve the technical problem, the invention provides a train vibration simulation method, which comprises the following steps:
determining the aerodynamic force exerted on the vehicle corresponding to the current attitude of the rail vehicle on the vibration test bed of the whole vehicle traveling system according to the corresponding relationship between the preset vehicle attitude and the aerodynamic force exerted on the vehicle;
loading aerodynamic force corresponding to the current posture of the railway vehicle on the railway vehicle through an actuator;
judging whether the test is finished or not;
if not, determining the current posture of the rail vehicle and executing the step of determining the aerodynamic force of the vehicle corresponding to the current posture of the rail vehicle according to the preset corresponding relation between the vehicle posture and the aerodynamic force of the vehicle;
if yes, the test is ended.
Preferably, before determining the aerodynamic force applied to the vehicle corresponding to the current attitude of the rail vehicle on the vibration test bed of the whole train running system according to the preset corresponding relationship between the vehicle attitude and the aerodynamic force applied to the vehicle, the train vibration simulation method further includes:
pre-constructing a first numerical simulation model of the rail vehicle, wherein the first numerical simulation model is reduced by a preset proportion;
verifying by using the wind tunnel test model with the reduced preset proportion and determining a first setting parameter group of the first numerical simulation model;
converting the first setting parameter group to obtain a second setting parameter group of a one-to-one second numerical simulation model of the railway vehicle;
simulating to obtain the aerodynamic performance of the rail vehicle under different running postures through the second numerical simulation model provided with the second setting parameter group;
and constructing a database containing the corresponding relation between the vehicle posture and the aerodynamic force applied to the vehicle by using all the simulation results.
Preferably, the step of verifying by using the wind tunnel test model with the reduced preset ratio and determining the first setting parameter group of the first numerical simulation model specifically comprises:
setting a designated order of alternative setting parameter groups for the first numerical simulation model;
obtaining the aerodynamic performance of the specified operation attitude under the fixed working condition through the simulation of the first numerical simulation model;
obtaining the aerodynamic performance of the specified operation attitude under the fixed working condition by using the wind tunnel test model test with the reduced preset proportion;
judging whether the aerodynamic performance obtained through the first numerical simulation model is approximate to the aerodynamic performance obtained through the wind tunnel test model;
if the candidate setting parameter groups are similar to each other, the candidate setting parameter groups in the specified order are used as a first setting parameter group;
if not, adding the specified order and executing the step of setting the alternative setting parameter group of the specified order for the first numerical simulation model;
wherein the initial value of the specified order is one.
Preferably, the aerodynamic performance of the rail vehicle under different operating postures obtained through simulation by the second numerical simulation model provided with the second setting parameter group is specifically as follows:
simulating to obtain the aerodynamic performance of the rail vehicle under different running postures of various running working conditions through the second numerical simulation model provided with the second setting parameter group;
the step of constructing a database containing the corresponding relationship between the vehicle attitude and the aerodynamic force exerted on the vehicle by using all the simulation results is specifically as follows:
constructing a database containing the corresponding relation between the vehicle attitude and the aerodynamic force of the vehicle under different working conditions by using all simulation results;
and then determining the aerodynamic force applied to the vehicle corresponding to the current attitude of the rail vehicle on the vibration test bed of the whole vehicle traveling system according to the corresponding relationship between the preset vehicle attitude and the aerodynamic force applied to the vehicle, wherein the aerodynamic force applied to the vehicle is specifically:
and determining the aerodynamic force applied to the vehicle corresponding to the current posture of the rail vehicle on the whole vehicle running system vibration test bed under the current working condition according to the database.
Preferably, the aerodynamic performance and the aerodynamic force applied to the vehicle comprise aerodynamic drag, aerodynamic lift, lateral force, roll moment, nodding moment and shaking moment.
Preferably, the rail vehicle is a high-speed maglev train.
Preferably, the judging whether the test is finished specifically includes:
judging whether the times of loading aerodynamic force on the rail vehicle reaches a preset threshold value or not;
if so, ending the test;
if not, the test is not finished.
In order to solve the above technical problem, the present invention further provides a train vibration simulation apparatus, including:
the determining module is used for determining the aerodynamic force exerted on the vehicle corresponding to the current attitude of the rail vehicle on the vibration test bed of the whole vehicle traveling system according to the corresponding relationship between the preset vehicle attitude and the aerodynamic force exerted on the vehicle;
the loading module is used for loading the aerodynamic force corresponding to the current posture of the railway vehicle on the railway vehicle through an actuator;
the judging module is used for judging whether the test is finished or not, if not, the iteration module is triggered, and if so, the finishing module is triggered;
the iteration module is used for determining the current posture of the rail vehicle and executing the step of determining the aerodynamic force exerted on the vehicle corresponding to the current posture of the rail vehicle according to the preset corresponding relation between the vehicle posture and the aerodynamic force exerted on the vehicle;
and the ending module is used for ending the test.
In order to solve the above technical problem, the present invention further provides a vibration test stand, including:
a memory for storing a computer program;
a processor for implementing the steps of the train vibration simulation method as described above when executing the computer program.
In order to solve the above technical problem, the present invention also provides a computer-readable storage medium having a computer program stored thereon, the computer program, when executed by a processor, implementing the steps of the train vibration simulation method as described above.
The invention provides a train vibration simulation method, which considers that the running attitude of a rail vehicle is changed due to the action of aerodynamic force, and the change of the aerodynamic force is brought after the running attitude is changed, and the coupling relation exists between the running attitude and the aerodynamic force, so that after the aerodynamic force applied to the vehicle corresponding to the current attitude of the rail vehicle is loaded to the rail vehicle, new aerodynamic force can be determined again according to the attitude change of the rail vehicle and loaded to the rail vehicle, the state change of the rail vehicle under the action of the aerodynamic force in the actual running process is closer to the state change of the rail vehicle, the vibration condition of the rail vehicle under the real running condition can be verified more accurately, and the potential safety hazard can be eliminated.
The invention also provides a train vibration simulation device, a vibration test bed and a computer readable storage medium, which have the same beneficial effects as the train vibration simulation method.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic flow chart of a train vibration simulation method according to the present invention;
FIG. 2 is a schematic structural diagram of a train vibration simulation apparatus according to the present invention;
fig. 3 is a schematic structural diagram of a vibration testing stand according to the present invention.
Detailed Description
The core of the invention is to provide a vehicle vibration simulation method, the simulation process is close to the state change of the rail vehicle under the action of aerodynamic force in actual operation, so that the vibration condition of the rail vehicle under the actual operation condition can be more accurately verified, and the potential safety hazard can be eliminated; the other core of the invention is to provide a train vibration simulation device, a vibration test bed and a computer readable storage medium, wherein the simulation process is close to the state change of the railway vehicle under the action of aerodynamic force in actual operation, so that the vibration condition of the railway vehicle under the actual operation condition can be more accurately verified, and the potential safety hazard can be eliminated.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a train vibration simulation method provided by the present invention, the train vibration simulation method includes:
s101: determining the aerodynamic force exerted on the vehicle corresponding to the current attitude of the rail vehicle on the vibration test bed of the whole vehicle traveling system according to the corresponding relationship between the preset vehicle attitude and the aerodynamic force exerted on the vehicle;
specifically, in the prior art, when a strong wind environment crosses a tunnel and an open line, the change of the running attitude of the high-speed maglev train can cause more complex feedback change of aerodynamic force, the current main test method is a wind tunnel test method, but in the wind tunnel test, the model of the high-speed maglev train cannot realize the transient of the attitude, namely, each wind tunnel test working condition can only test a single running attitude, and cannot simulate the real-time attitude change in the running process of the train.
Specifically, in consideration of the technical problems, the train vibration condition under the action of aerodynamic force is simulated on a vibration test bed of a whole train running system, and in order to obtain the aerodynamic force applied to the train corresponding to the current posture of the rail vehicle more quickly, the corresponding relation between the posture of the train and the aerodynamic force applied to the train is preset in the train vibration simulation method, and the train vibration simulation accuracy can be improved.
Wherein an initial attitude can be set for the rail vehicle before the formal simulation.
S102: loading aerodynamic force corresponding to the current posture of the railway vehicle on the railway vehicle through an actuator;
specifically, after determining the aerodynamic force corresponding to the current attitude of the rail vehicle, the aerodynamic force corresponding to the current attitude of the rail vehicle can be loaded on the rail vehicle through the actuator, so that train vibration simulation can be carried out.
S103: judging whether the test is finished or not;
specifically, the test termination condition may be of various types, and the worker may perform an autonomous setting, or may actively send a test termination instruction to terminate the test.
Wherein, automatically judging whether the test is finished is beneficial to improving the automation degree.
S104: if not, determining the current posture of the rail vehicle and executing the step of determining the aerodynamic force of the vehicle corresponding to the current posture of the rail vehicle according to the preset corresponding relation between the vehicle posture and the aerodynamic force of the vehicle;
specifically, under the condition that the test is not finished, the operation posture of the rail vehicle is changed after the aerodynamic force acts on the rail vehicle, and the aerodynamic force applied to the rail vehicle after the operation posture is changed is correspondingly changed, so that in order to truly simulate the situation, the current posture of the rail vehicle can be determined, and the step of determining the aerodynamic force applied to the rail vehicle corresponding to the current posture of the rail vehicle according to the preset corresponding relation between the vehicle posture and the aerodynamic force applied to the vehicle can be executed, namely the aerodynamic force and the mutual iteration of the vehicle posture are simulated, and the actual operation state of the rail vehicle is closer to.
S105: if yes, the test is ended.
Specifically, the test may be ended if the test end condition is met.
The invention provides a train vibration simulation method, which considers that the running attitude of a rail vehicle is changed due to the action of aerodynamic force, and the change of the aerodynamic force is brought after the running attitude is changed, and the coupling relation exists between the running attitude and the aerodynamic force, so that after the aerodynamic force applied to the vehicle corresponding to the current attitude of the rail vehicle is loaded to the rail vehicle, new aerodynamic force can be determined again according to the attitude change of the rail vehicle and loaded to the rail vehicle, the state change of the rail vehicle under the action of the aerodynamic force in the actual running process is closer to the state change of the rail vehicle, the vibration condition of the rail vehicle under the real running condition can be verified more accurately, and the potential safety hazard can be eliminated.
On the basis of the above-described embodiment:
as a preferred embodiment, before determining the aerodynamic force applied to the vehicle corresponding to the current attitude of the rail vehicle on the vibration test bed of the whole vehicle traveling system according to the preset corresponding relationship between the vehicle attitude and the aerodynamic force applied to the vehicle, the train vibration simulation method further includes:
pre-constructing a first numerical simulation model of the rail vehicle, wherein the first numerical simulation model is reduced by a preset proportion;
verifying by using the wind tunnel test model with the reduced preset proportion and determining a first setting parameter group of the first numerical simulation model;
converting the first setting parameter group to obtain a second setting parameter group of a one-to-one second numerical simulation model of the rail vehicle;
the aerodynamic performance of the rail vehicle under different running postures is obtained through simulation by a second numerical simulation model provided with a second setting parameter group;
and constructing a database containing the corresponding relation between the vehicle attitude and the aerodynamic force applied to the vehicle by using all the simulation results.
Specifically, the embodiment of the invention provides a specific method for constructing a corresponding relation between a vehicle attitude and aerodynamic force applied to a vehicle, an efficient way for generating aerodynamic performance corresponding to the vehicle attitude is to generate through a numerical simulation model, and a set parameter group of the numerical simulation model is a precondition for accurately generating the aerodynamic performance corresponding to the vehicle attitude.
The preset ratio may be various types, for example, may be 10.
Of course, in addition to the specific process, other specific ways may also be used to construct the corresponding relationship between the vehicle posture and the aerodynamic force applied to the vehicle, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, the verification and determination of the first setting parameter group of the first numerical simulation model by using the wind tunnel test model with the reduced preset ratio specifically includes:
setting a designated order of alternative setting parameter groups for the first numerical simulation model;
obtaining the aerodynamic performance of the specified operation attitude under the fixed working condition through the simulation of a first numerical simulation model;
obtaining the aerodynamic performance of the specified operation attitude under the fixed working condition by utilizing a wind tunnel test model test with a reduced preset proportion;
judging whether the aerodynamic performance obtained through the first numerical simulation model is approximate to the aerodynamic performance obtained through the wind tunnel test model;
if the two sets are similar, taking the alternative setting parameter group in the designated order as a first setting parameter group;
if not, adding the specified order and executing the step of setting the alternative setting parameter group of the specified order for the first numerical simulation model;
wherein the initial value of the specified order is one.
Specifically, the embodiment of the present invention may automatically set the candidate setting parameter group for the first numerical simulation model, then verify the first numerical simulation model by using the wind tunnel test model with the reduced preset ratio, verify whether the current candidate setting parameter group is applicable, and determine that the current candidate setting parameter group is applicable and determine that the current candidate setting parameter group is the first setting parameter group only when "the aerodynamic performance obtained by the first numerical simulation model" is similar to "the aerodynamic performance obtained by the wind tunnel test model".
The "approximate" determination condition may be set autonomously, for example, the "approximate" determination may be performed by setting a reference threshold for a difference between two sets of aerodynamic performance, and the embodiment of the present invention is not limited herein.
Of course, in addition to automatically setting the alternative setting parameter sets in order, after the determination is not approximate, the staff may also set the alternative setting parameter sets autonomously, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, the aerodynamic performance of the rail vehicle under different operating postures obtained through simulation by using a second numerical simulation model provided with a second setting parameter group is specifically as follows:
the aerodynamic performance of the rail vehicle under different running postures of various running working conditions is obtained through simulation by a second numerical simulation model provided with a second setting parameter group;
then, the step of constructing a database containing the corresponding relationship between the vehicle attitude and the aerodynamic force applied to the vehicle by using all the simulation results is specifically as follows:
constructing a database containing the corresponding relation between the vehicle attitude and the aerodynamic force of the vehicle under different working conditions by using all simulation results;
and then according to the corresponding relation between the preset vehicle attitude and the aerodynamic force exerted on the vehicle, determining that the aerodynamic force exerted on the vehicle corresponding to the current attitude of the rail vehicle on the whole vehicle walking system vibration test bed is specifically as follows:
and determining the aerodynamic force applied to the vehicle corresponding to the current posture of the rail vehicle on the whole vehicle running system vibration test bed under the current working condition according to the database.
Specifically, in order to realize vibration simulation of the rail vehicle under the action of aerodynamic force under various different working conditions, the aerodynamic performance of the rail vehicle under different running postures of various running working conditions can be obtained through simulation by the second numerical simulation model provided with the second setting parameter group, so that the constructed database comprises the corresponding relation between the vehicle posture under different working conditions and the aerodynamic force applied to the vehicle, therefore, the vibration simulation of the rail vehicle under the action of aerodynamic force under various different working conditions can be realized during vibration simulation, and the comprehensiveness of the vibration simulation of the rail vehicle under the action of aerodynamic force is improved.
The operation conditions of the rail vehicle may include an open-line single vehicle operation, an open-line intersection, a single vehicle passing through a tunnel, an intersection in the tunnel, a strong wind environment operation, and the like, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, the aerodynamic performance and the aerodynamic forces experienced by the vehicle comprise aerodynamic drag, aerodynamic lift, lateral forces, roll moment, nodding moment and rolling moment.
In particular, these aerodynamic indicators described above make it possible to describe the aerodynamic forces to which the rail vehicle is subjected during operation in a fully accurate manner.
Of course, besides the aerodynamic indexes, the aerodynamic performance and the aerodynamic force applied to the vehicle may be of other types, and the embodiments of the present invention are not limited herein.
In a preferred embodiment, the rail vehicle is a high-speed maglev train.
In particular, compared with a common rail train, the high-speed maglev train needs to pay more attention to the influence of aerodynamic force on the running attitude.
Of course, besides the high-speed magnetic levitation train, the rail vehicle may be of other types, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, the step of determining whether the test is finished specifically includes:
judging whether the times of loading aerodynamic force on the rail vehicle reaches a preset threshold value or not;
if so, ending the test;
if not, the test is not finished.
Specifically, the duration of the vibration simulation can be flexibly and conveniently controlled by limiting the times of loading aerodynamic force on the rail vehicle through a preset threshold value.
Of course, the test termination condition may be other types besides the termination condition, and the embodiment of the present invention is not limited herein.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a train vibration simulation device provided in the present invention, the train vibration simulation device includes:
the determining module 21 is configured to determine, according to a preset corresponding relationship between a vehicle attitude and a vehicle aerodynamic force, a vehicle aerodynamic force applied to the vehicle corresponding to a current attitude of the rail vehicle on the vibration test bed of the entire vehicle traveling system;
the loading module 22 is used for loading aerodynamic force corresponding to the current posture of the railway vehicle on the railway vehicle through an actuator;
a judging module 23, configured to judge whether the test is finished, if not, trigger the iteration module 24, and if so, trigger the finishing module 25;
the iteration module 24 is configured to determine a current posture of the rail vehicle and perform a step of determining an aerodynamic force exerted on the vehicle corresponding to the current posture of the rail vehicle according to a preset correspondence between the vehicle posture and the aerodynamic force exerted on the vehicle;
and an end module 25 for ending the test.
For the description of the train vibration simulation device provided by the embodiment of the present invention, please refer to the embodiment of the train vibration simulation method described above, which is not described herein again.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a vibration testing stand provided in the present invention, the vibration testing stand includes:
a memory for storing a computer program;
and the processor is used for realizing the steps of the train vibration simulation method in the embodiment when executing the computer program.
For the description of the vibration test bed provided in the embodiment of the present invention, please refer to the embodiment of the train vibration simulation method described above, which is not described herein again.
The present invention also provides a computer readable storage medium having a computer program stored thereon, which when executed by a processor, implements the steps of the train vibration simulation method as in the previous embodiment.
For the introduction of the computer-readable storage medium provided in the embodiment of the present invention, please refer to the embodiment of the train vibration simulation method described above, which is not described herein again.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A train vibration simulation method, comprising:
determining the aerodynamic force applied to the vehicle corresponding to the current attitude of the rail vehicle on the vibration test bed of the whole vehicle traveling system according to the corresponding relationship between the preset vehicle attitude and the aerodynamic force applied to the vehicle;
loading aerodynamic force corresponding to the current posture of the railway vehicle on the railway vehicle through an actuator;
judging whether the test is finished or not;
if not, determining the current posture of the rail vehicle and executing the step of determining the aerodynamic force of the vehicle corresponding to the current posture of the rail vehicle according to the preset corresponding relation between the vehicle posture and the aerodynamic force of the vehicle;
if yes, the test is ended.
2. The train vibration simulation method according to claim 1, wherein before determining the aerodynamic force applied to the vehicle corresponding to the current attitude of the rail vehicle on the vibration test bed of the entire train traveling system according to the preset correspondence between the vehicle attitude and the aerodynamic force applied to the vehicle, the train vibration simulation method further comprises:
pre-constructing a first numerical simulation model of the rail vehicle, wherein the first numerical simulation model is reduced by a preset proportion;
verifying by using the wind tunnel test model with the reduced preset proportion and determining a first setting parameter group of the first numerical simulation model;
converting the first setting parameter group to obtain a second setting parameter group of a one-to-one second numerical simulation model of the railway vehicle;
simulating to obtain the aerodynamic performance of the rail vehicle under different running postures through the second numerical simulation model provided with the second setting parameter group;
and constructing a database containing the corresponding relation between the vehicle attitude and the aerodynamic force applied to the vehicle by using all the simulation results.
3. The train vibration simulation method according to claim 2, wherein the first setting parameter group for verifying and determining the first numerical simulation model by using the wind tunnel test model with the reduced preset ratio is specifically:
setting a designated order of alternative setting parameter sets for the first numerical simulation model;
obtaining the aerodynamic performance of the specified operation attitude under the fixed working condition through the simulation of the first numerical simulation model;
obtaining the aerodynamic performance of the specified operation attitude under the fixed working condition by utilizing the wind tunnel test model test with the reduced preset proportion;
judging whether the aerodynamic performance obtained through the first numerical simulation model is approximate to the aerodynamic performance obtained through the wind tunnel test model;
if the candidate setting parameter groups are similar to each other, the candidate setting parameter groups in the specified order are used as a first setting parameter group;
if not, adding the specified order and executing the step of setting the alternative setting parameter group of the specified order for the first numerical simulation model;
wherein the initial value of the specified order is one.
4. The train vibration simulation method according to claim 3, wherein the second numerical simulation model provided with the second setting parameter group is used for simulating aerodynamic performance of the rail vehicle at different running postures, specifically:
simulating to obtain the aerodynamic performance of the rail vehicle under different running postures of various running working conditions through the second numerical simulation model provided with the second setting parameter group;
the step of constructing a database containing the corresponding relationship between the vehicle attitude and the aerodynamic force exerted on the vehicle by using all the simulation results is specifically as follows:
constructing a database containing the corresponding relation between the vehicle attitude and the aerodynamic force of the vehicle under different working conditions by using all simulation results;
and then determining the aerodynamic force applied to the vehicle corresponding to the current attitude of the rail vehicle on the vibration test bed of the whole vehicle traveling system according to the corresponding relationship between the preset vehicle attitude and the aerodynamic force applied to the vehicle, wherein the aerodynamic force applied to the vehicle is specifically:
and determining the aerodynamic force applied to the vehicle corresponding to the current posture of the rail vehicle on the whole vehicle running system vibration test bed under the current working condition according to the database.
5. A method according to claim 2, wherein the aerodynamic performance and the aerodynamic force on the vehicle comprise aerodynamic drag, aerodynamic lift, lateral force, roll moment, nod moment and yaw moment.
6. The train vibration simulation method of claim 1, wherein the rail vehicle is a high speed magnetic levitation train.
7. The train vibration simulation method according to any one of claims 1 to 6, wherein the judging whether the test is finished specifically includes:
judging whether the times of loading aerodynamic force on the rail vehicle reaches a preset threshold value or not;
if so, ending the test;
if not, the test is not finished.
8. A train vibration simulator, comprising:
the determining module is used for determining the aerodynamic force exerted on the vehicle corresponding to the current attitude of the rail vehicle on the vibration test bed of the whole vehicle running system according to the corresponding relationship between the preset vehicle attitude and the aerodynamic force exerted on the vehicle;
the loading module is used for loading the aerodynamic force corresponding to the current posture of the railway vehicle on the railway vehicle through an actuator;
the judging module is used for judging whether the test is finished or not, if not, the iteration module is triggered, and if so, the finishing module is triggered;
the iteration module is used for determining the current attitude of the rail vehicle and executing the step of determining the aerodynamic force of the vehicle corresponding to the current attitude of the rail vehicle according to the preset corresponding relationship between the vehicle attitude and the aerodynamic force of the vehicle;
and the ending module is used for ending the test.
9. A vibration test stand, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the train vibration simulation method according to any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the train vibration simulation method according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211245663.0A CN115615657A (en) | 2022-10-12 | 2022-10-12 | Train vibration simulation method and device, vibration test stand and readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211245663.0A CN115615657A (en) | 2022-10-12 | 2022-10-12 | Train vibration simulation method and device, vibration test stand and readable storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
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| CN116519340A (en) * | 2023-04-21 | 2023-08-01 | 石家庄铁道大学 | Train operation performance test bed under aerodynamic force effect |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116519340A (en) * | 2023-04-21 | 2023-08-01 | 石家庄铁道大学 | Train operation performance test bed under aerodynamic force effect |
| CN116519340B (en) * | 2023-04-21 | 2023-12-12 | 石家庄铁道大学 | Train operation performance test bed under aerodynamic force effect |
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