CN114491815A - Rigidity judgment method and device for automobile steering system, terminal device and medium - Google Patents
Rigidity judgment method and device for automobile steering system, terminal device and medium Download PDFInfo
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Abstract
The invention discloses a rigidity judgment method, a rigidity judgment device, terminal equipment and a medium of an automobile steering system, wherein the method comprises the following steps: acquiring a three-dimensional model of the automobile steering system; establishing corresponding boundary conditions for the three-dimensional model; determining load information required to be applied by the three-dimensional model; and judging the rigidity of the automobile steering system of the three-dimensional model according to the boundary condition and the load information so as to determine whether the automobile steering system meets the preset rigidity requirement. By adopting the method and the device, the intelligent and convenient judgment of the rigidity judgment of the automobile steering system is realized.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a rigidity judgment method and device of an automobile steering system, terminal equipment and a medium.
Background
With the popularization of automobiles and the improvement of the living standard of people, the attention of consumers on the performance of the entire automobile NVH (Noise Vibration Harshness) is increasing. The rigidity of an automobile steering system (referred to as steering system rigidity for short) is one of important consideration targets of NVH performance of a whole automobile, and the insufficient rigidity directly causes interference of vibration and other parts in idling or driving of the automobile, and may also cause a chattering phenomenon of a steering wheel, thereby finally affecting the stability and comfort of vehicle operation.
Therefore, the automobile steering system needs to meet certain rigidity target requirements in the early design. However, how to conveniently determine whether the rigidity of the automobile steering system meets the corresponding rigidity requirement is a technical problem which needs to be solved urgently at present.
Disclosure of Invention
The embodiment of the application provides a method, a device, a terminal device and a medium for judging the rigidity of an automobile steering system, so that the intelligent and convenient judgment of the rigidity judgment of the automobile steering system is realized.
In one aspect, the present application provides a stiffness determination method for an automobile steering system according to an embodiment of the present application, where the method includes:
acquiring a three-dimensional model of the automobile steering system;
establishing a corresponding boundary condition for the three-dimensional model, wherein the boundary condition is used for constraining a constrained position in the three-dimensional model;
determining load information required to be applied by the three-dimensional model;
and judging the rigidity of the automobile steering system of the three-dimensional model according to the boundary condition and the load information so as to determine whether the automobile steering system meets the preset rigidity requirement.
Optionally, the determining the stiffness of the automobile steering system according to the boundary condition and the load information by the three-dimensional model comprises:
according to the boundary conditions and the load information, performing mechanical solution on the three-dimensional model to obtain displacement information of the automobile steering system;
and judging whether the displacement information meets the rigidity requirement of the preset.
Optionally, the displacement information includes: a first displacement and/or a second displacement, wherein the judging whether the displacement information meets the rigidity requirement matched with the preset rigidity comprises the following steps:
judging whether the first displacement and/or the second displacement are/is smaller than or equal to corresponding preset displacement values or not;
the first displacement is a displacement value of a steering column fixed point in the automobile steering system in a first direction, and the second displacement is a displacement of a steering wheel central point in the automobile steering system along a direction perpendicular to the steering column.
Optionally, the determining the load information required to be applied by the three-dimensional model includes:
determining a position, which is in the automobile steering system, from the center point of a steering wheel and at a fixed distance downwards along the steering column as a force application action point;
determining a first direction acting force and a second direction acting force acting on the force application point;
and acquiring the load information according to the first direction acting force, the second direction acting force and the force application point.
Optionally, the obtaining the load information according to the first direction acting force, the second direction acting force and the force application point includes:
determining a comprehensive acting force acting on the force application point according to the first direction acting force and the second direction acting force;
and determining the comprehensive acting force as the load information.
Optionally, the acting direction of the comprehensive acting force and the first direction of the acting force in the first direction form an included angle of 30 degrees.
Optionally, the method further comprises:
when the automobile steering system does not meet the preset rigidity requirement, determining a target influence factor;
and optimizing the rigidity of the automobile steering system according to the target influence factor.
In another aspect, the present application provides, by an embodiment of the present application, a stiffness determination device for a steering system of an automobile, the device including: the device comprises an acquisition module, an establishment module, a determination module and a judgment module, wherein:
the acquisition module is used for acquiring a three-dimensional model of the automobile steering system;
the establishing module is used for establishing corresponding boundary conditions for the three-dimensional model, and the boundary conditions are used for constraining the constrained position in the three-dimensional model;
the determining module is used for determining load information required to be applied by the three-dimensional model;
and the judging module is used for judging the rigidity of the automobile steering system of the three-dimensional model according to the boundary condition and the load information so as to determine whether the automobile steering system meets the preset rigidity requirement.
On the other hand, the present application provides a terminal device according to an embodiment of the present application, where the terminal device includes: a processor, a memory, a communication interface, and a bus; the processor, the memory and the communication interface are connected through the bus and complete mutual communication; the memory stores executable program code; the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory for executing the rigidity determination method of the automobile steering system as described above.
On the other hand, the present application provides, by an embodiment of the present application, a computer-readable storage medium storing a program that executes the stiffness determination method of the automobile steering system as described above when the program is run on a terminal device.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: the method comprises the steps of obtaining a three-dimensional model of the automobile steering system; establishing a corresponding boundary condition for the three-dimensional model, wherein the boundary condition is used for constraining a constrained position in the three-dimensional model; determining load information required to be applied by the three-dimensional model; and judging the rigidity of the automobile steering system of the three-dimensional model according to the boundary condition and the load information so as to determine whether the automobile steering system meets the preset rigidity requirement. In the scheme, the boundary condition is established and the corresponding load information is applied to the three-dimensional model of the automobile steering system, and then the rigidity of the three-dimensional model is judged according to the boundary condition and the load information, so that whether the automobile steering system meets the rigidity requirement of the pre-configuration or not is intelligently, conveniently and efficiently judged, and the convenience and the accuracy of the rigidity judgment of the automobile steering system are improved.
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In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a stiffness determination method for an automobile steering system according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a possible automobile steering system provided in an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a stiffness determination device of an automobile steering system according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
Detailed Description
The applicant has also found in the course of the present application that: at present, in the industry, a unidirectional loading mode is mostly adopted for rigidity simulation calculation of a digital-analog stage of an automobile steering system. For example, if the rigidity of the system in the X direction at a certain position is judged, a certain load is loaded to the X direction at the position, then the X direction displacement of the position or the position nearby under the load is measured, and the rigidity value is obtained through calculation. The stiffness simulation calculations in both the Y and Z directions follow this type of extrapolation. The calculation method has obvious limitation, and is characterized in that the rigidity of a one-way local position is more reflected, and the comprehensive rigidity of the automobile steering system cannot be really reflected. And on the premise that the stiffness values in all directions do not reach the standards, the developed optimization work is limited, and the optimization of the comprehensive stiffness of the steering system cannot be shown.
The embodiment of the application provides the rigidity judgment method of the automobile steering system, so that the comprehensive rigidity of the automobile steering system can be conveniently and accurately judged.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows: acquiring a three-dimensional model of the automobile steering system; establishing a corresponding boundary condition for the three-dimensional model, wherein the boundary condition is used for constraining a constrained position in the three-dimensional model; determining load information required to be applied by the three-dimensional model; and judging the rigidity of the automobile steering system of the three-dimensional model according to the boundary condition and the load information so as to determine whether the automobile steering system meets the preset rigidity requirement.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Fig. 1 is a schematic flow chart of a stiffness determination method for an automobile steering system according to an embodiment of the present disclosure. The method as shown in fig. 1 comprises the following implementation steps:
and S101, acquiring a three-dimensional model of the automobile steering system.
The method can establish the three-dimensional model of the automobile steering system, and then introduce the three-dimensional model into finite element analysis software. After the finite element analysis software obtains the three-dimensional model, the three-dimensional model may be processed, such as geometric cleaning, mesh partitioning, material and property definition, and the processing is not limited and detailed herein.
S102, establishing a corresponding boundary condition for the three-dimensional model, wherein the boundary condition is used for constraining the constrained position in the three-dimensional model.
The present application may further establish corresponding analysis boundary conditions for applying corresponding prescribed constraints to the prescribed constraint locations in the three-dimensional model. The constraint position refers to a connection point which is customized and specified by a system and is connected with a vehicle body, for example, the connection point specifically comprises but is not limited to a connection point of the automobile steering system and the left and right sides of the vehicle body, a connection point of the automobile steering system and the floor of the vehicle body and a connection point of the automobile steering system and the front end of the vehicle body. And the constraint positions are all six-freedom full constraint aiming at the automobile steering system.
S103, determining load information required to be applied by the three-dimensional model.
In one embodiment, the present invention can determine the position of the steering system of the vehicle, which is a fixed distance from the center point of the steering wheel and downward along the steering column, as the force application point C. The fixed distance is a distance which is set by a system or a user, for example, 185mm, and the like, and the invention is not limited.
Further, the present invention can determine a first direction acting force Fx and a second direction acting force Fz acting on the force application point C, wherein the first direction acting force and the second direction acting force respectively correspond to different acting directions of the acting forces, and the magnitude of the acting forces is not limited. For example, the first directional acting force may be a acting force Fx acting in the X-axis direction, and the second directional acting force may be a acting force Fz acting in the Z-axis direction.
Finally, the load information can be obtained according to the first direction acting force Fx, the second direction acting force Fz and the force application point C. For example, the payload information may be specifically wrappedThe information includes the first direction acting force Fx, the second direction acting force Fz, the force application point C, and the like. In a specific implementation, the invention can determine the comprehensive acting force F acting on the force application point according to the first direction acting force Fx and the second direction acting force FzCombination of Chinese herbsFurther to apply said combined force FCombination of Chinese herbsAnd determining the load information. Optionally, the acting direction of the comprehensive acting force and the first direction of the acting force in the first direction form an included angle of 30 degrees.
For example, please refer to fig. 2, which shows a schematic structure of a possible steering system of an automobile. As shown in fig. 2, the present invention can apply a corresponding predetermined load (i.e., load information) to the three-dimensional model after applying the constraint condition, wherein the load point (i.e., force application point) is a central point located 185mm downward from the steering column along the axial direction through the central point b of the steering wheel, i.e., point C in the figure. The specified load comprises a first direction acting force and a second direction acting force, the first direction acting force can be the direction of the x axis of the whole vehicle and the acting force Fx which passes through the point C is 10392N. The second direction acting force can be that the force Fz is 6000N along the direction of the overall vehicle + Z axis through the point C. Fx and Fz are loaded simultaneously and can be fit to a comprehensive acting force FCombination of Chinese herbs，FCombination of Chinese herbs12000N, and said FCombination of Chinese herbsAnd forms an included angle of 30 degrees with the X axis direction of the whole vehicle.
And S104, judging the rigidity of the automobile steering system of the three-dimensional model according to the boundary condition and the load information so as to determine whether the automobile steering system meets the preset rigidity requirement.
In a specific embodiment, according to the boundary condition and the load information, the three-dimensional model can be subjected to mechanical solution to obtain displacement information of the automobile steering system; and judging whether the displacement information meets the rigidity requirement of the preset. The stiffness requirement is set by a system in a self-defined manner, for example, the stiffness requirement includes that the corresponding displacement indicated by the displacement information does not exceed (i.e., is less than or equal to) a corresponding preset displacement value, and the like.
In a specific implementation, the displacement information includes: the specific implementation manner of the invention for judging whether the displacement information meets the rigidity requirement pre-configured is as follows: and judging whether the first displacement and/or the second displacement are smaller than or equal to corresponding preset displacement values. Specifically, the present invention may determine whether the first displacement is less than or equal to a first predetermined displacement value, and/or determine whether the second displacement is less than or equal to a second predetermined displacement value. When the first displacement is judged to be smaller than or equal to a first preset displacement value and the second displacement is judged to be smaller than or equal to a second preset displacement value, the automobile steering system can be determined to meet the rigidity requirement of the preset configuration; conversely, the present invention may determine that the vehicle steering system does not meet the pre-configured stiffness requirements.
The first displacement is a displacement value of a steering column fixing point a in the automobile steering system in a first direction, specifically, for example, referring to fig. 2, and the first displacement dX may specifically be a displacement of the steering column fixing point along an X-axis direction of the whole automobile. The second displacement is a displacement of a steering wheel center point in the automobile steering system along a direction perpendicular to the steering column, and specifically, for example, the second displacement dN in fig. 2 may specifically refer to a displacement of a steering wheel center point b along a direction perpendicular to the steering column. The first preset displacement value and the second preset displacement value related to the present invention may be displacement thresholds set by a system in a self-defined manner, for example, dX is less than or equal to 12mm, dN is less than or equal to 22mm, and the present invention is not limited.
In an optional embodiment, when the automobile steering system is judged to meet the preset rigidity requirement, mold development and object production can be carried out according to the three-dimensional model. Otherwise, when the automobile steering system is judged not to meet the preset rigidity requirement, the target influence factor can be determined, and the target influence factor is the influence factor set by the system in a self-defined mode. Further, the rigidity of the automobile steering system can be optimized according to the target influence factor, specifically, a target optimization strategy corresponding to the target influence factor can be determined, and then the rigidity of the automobile steering system is optimized according to the indication of the target optimization strategy. Wherein, different influence factors are configured with different automobile optimization strategies in advance. The definition of the influence factors of the optimization scheme according to the optimization effect cost performance is described below. The present invention provides for a maximum impact factor of 5 and a minimum impact factor of 1. The configuration of the optimization strategy and the influence factors in the optimization process is shown as follows: 1. a vehicle body bracket is additionally arranged near a vehicle cross beam (CCB) connected with a steering column, and the influence factor is 5. 2. The CCB closest to the steering column is connected with the vehicle body support structure for reinforcement (the molded surface of the support is enlarged, the via hole is reduced, the characteristic rib is widened and heightened, and the flanging is widened), and the influence factor is 4. 3. The CCB next to the steering column is connected with the vehicle body support structure for reinforcement (the molded surface of the support is enlarged, the via hole is reduced, the characteristic rib is widened and heightened, and the flanging is widened), and the influence factor is 3. 4. The CCB receiver body support closest to the steering column is thickened, and the influence factor is 3. 5. The CCB receiving body support next to the steering column is thickened, and the shadow factor is 2. 6. The CCB beam is thickened, and the influence factor is 1. 7. Other systems can customize the optimization scheme, and the influence factor can be 1 or below 1, etc.
It should be noted that several cases of the above examples can be used alone or in combination to optimize the stiffness of the automobile steering system, so that the automobile steering system meets the corresponding pre-configured stiffness requirement.
It can be seen that the embodiment of the present application has the following beneficial effects: 1. the comprehensive rigidity of a plurality of automobile steering system design schemes can be identified efficiently at low cost, the comprehensive rigidity of one design scheme can be acquired only in half a day, and only one simulation engineer, one workstation and one set of simulation software are required to be invested. 2. By the method, the steering system can be ensured to be subjected to die development and material object production on the premise of meeting the design target of comprehensive rigidity, the problems that in later experimental tests, the die needs to be optimized and repaired, even the die is scrapped and the like due to insufficient rigidity are avoided, and consumed time cost and cost are reduced as much as possible. 3. Compared with the traditional unidirectional rigidity calculation method for origin unidirectional loading and origin unidirectional measurement of a steering system in the industry, the comprehensive rigidity calculation method for origin comprehensive loading and origin comprehensive measurement is provided. The comprehensive rigidity of the steering system is embodied, and the limitation of unidirectional rigidity embodied by a traditional calculation method can be avoided. In addition, the optimization measure matched with the calculation method also reflects the optimization of the comprehensive rigidity.
By implementing the embodiment of the application, the application acquires the three-dimensional model of the automobile steering system; establishing a corresponding boundary condition for the three-dimensional model, wherein the boundary condition is used for constraining a constrained position in the three-dimensional model; determining load information required to be applied by the three-dimensional model; and judging the rigidity of the automobile steering system of the three-dimensional model according to the boundary condition and the load information so as to determine whether the automobile steering system meets the preset rigidity requirement. In the scheme, the boundary condition is established for the three-dimensional model of the automobile steering system, the corresponding load information is applied, then the rigidity of the three-dimensional model is judged according to the boundary condition and the load information, whether the automobile steering system meets the preset rigidity requirement or not is judged intelligently, conveniently and efficiently, and therefore the convenience and the accuracy of the rigidity judgment of the automobile steering system are improved.
Based on the same inventive concept, another embodiment of the present application provides a device and a terminal device corresponding to the method for determining stiffness of an automobile steering system according to the embodiment of the present application.
Fig. 3 is a schematic structural diagram of a stiffness determination device of an automobile steering system according to an embodiment of the present application. The apparatus 30 shown in fig. 3 comprises: an obtaining module 301, an establishing module 302, a determining module 303 and a judging module 304, wherein:
the obtaining module 301 is configured to obtain a three-dimensional model of the automobile steering system;
the establishing module 302 is configured to establish a corresponding boundary condition for the three-dimensional model, where the boundary condition is used to constrain a constraint position in the three-dimensional model;
the determining module 303 is configured to determine load information to be applied to the three-dimensional model;
the determining module 304 is configured to perform stiffness determination on the automobile steering system according to the boundary condition and the load information, so as to determine whether the automobile steering system meets a pre-configured stiffness requirement.
Optionally, the determining module 304 is specifically configured to:
according to the boundary conditions and the load information, performing mechanical solution on the three-dimensional model to obtain displacement information of the automobile steering system;
and judging whether the displacement information meets the rigidity requirement matched with the displacement information.
Optionally, the displacement information includes a first displacement and/or a second displacement, and the determining module 304 is specifically configured to:
judging whether the first displacement and/or the second displacement are smaller than or equal to corresponding preset displacement values or not;
the first displacement is a displacement value of a steering column fixed point in the automobile steering system in a first direction, and the second displacement is a displacement of a steering wheel central point in the automobile steering system along a direction perpendicular to the steering column.
Optionally, the determining module 303 is specifically configured to:
determining a position, which is in the automobile steering system, from the center point of a steering wheel and at a fixed distance downwards along the steering column as a force application action point;
determining a first direction acting force and a second direction acting force acting on the force application point;
and acquiring the load information according to the first direction acting force, the second direction acting force and the force application point.
Optionally, the determining module 303 is specifically configured to:
determining a comprehensive acting force acting on the force application point according to the first direction acting force and the second direction acting force;
and determining the comprehensive acting force as the load information.
Optionally, the acting direction of the comprehensive acting force and the first direction of the acting force in the first direction form an included angle of 30 degrees.
Optionally, the determining module 304 is specifically configured to:
when the automobile steering system does not meet the preset rigidity requirement, determining a target influence factor;
and optimizing the rigidity of the automobile steering system according to the target influence factor.
Please refer to fig. 4, which is a schematic structural diagram of a terminal device according to an embodiment of the present application. The terminal device 40 shown in fig. 4 includes: at least one processor 401, a communication interface 402, a user interface 403 and a memory 404, wherein the processor 401, the communication interface 402, the user interface 403 and the memory 404 may be connected by a bus or other means, and the embodiment of the present invention is exemplified by being connected by a bus 405. Wherein the content of the first and second substances,
The communication interface 402 may be a wired interface (e.g., an ethernet interface) or a wireless interface (e.g., a cellular network interface or using a wireless local area network interface) for communicating with other terminals or websites. In this embodiment of the present invention, the communication interface 402 is specifically configured to obtain a three-dimensional model.
The user interface 403 may be a touch panel, including a touch screen and a touch screen, for detecting an operation instruction on the touch panel, and the user interface 403 may also be a physical button or a mouse. The user interface 403 may also be a display screen for outputting, displaying images or data.
The Memory 404 may include Volatile Memory (Volatile Memory), such as Random Access Memory (RAM); the Memory may also include a Non-Volatile Memory (Non-Volatile Memory), such as a Read-Only Memory (ROM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, HDD), or a Solid-State Drive (SSD); the memory 404 may also comprise a combination of memories of the kind described above. The memory 404 is used for storing a set of program codes, and the processor 401 is used for calling the program codes stored in the memory 404 and executing the following operations:
acquiring a three-dimensional model of the automobile steering system;
establishing a corresponding boundary condition for the three-dimensional model, wherein the boundary condition is used for constraining a constrained position in the three-dimensional model;
determining load information required to be applied by the three-dimensional model;
and judging the rigidity of the automobile steering system of the three-dimensional model according to the boundary condition and the load information so as to determine whether the automobile steering system meets the preset rigidity requirement.
Optionally, the determining the stiffness of the automobile steering system according to the boundary condition and the load information by the three-dimensional model comprises:
according to the boundary conditions and the load information, performing mechanical solution on the three-dimensional model to obtain displacement information of the automobile steering system;
and judging whether the displacement information meets the rigidity requirement of the preset.
Optionally, the displacement information includes a first displacement and/or a second displacement, and the determining whether the displacement information satisfies a stiffness requirement pre-configured includes:
judging whether the first displacement and/or the second displacement are smaller than or equal to corresponding preset displacement values or not;
the first displacement is a displacement value of a steering column fixing point in the automobile steering system in a first direction, and the second displacement is a displacement of a steering wheel center point in the automobile steering system along a direction perpendicular to the steering column.
Optionally, the determining the load information required to be applied by the three-dimensional model includes:
determining a position, which is in the automobile steering system, from the center point of a steering wheel and at a fixed distance downwards along the steering column as a force application action point;
determining a first direction acting force and a second direction acting force acting on the force application point;
and acquiring the load information according to the first direction acting force, the second direction acting force and the force application point.
Optionally, the obtaining the load information according to the first direction acting force, the second direction acting force and the force application point includes:
determining a comprehensive acting force acting on the force application point according to the first direction acting force and the second direction acting force;
and determining the comprehensive acting force as the load information.
Optionally, the acting direction of the comprehensive acting force and the first direction of the acting force in the first direction form an included angle of 30 degrees.
Optionally, the processor 401 is configured to:
when the automobile steering system does not meet the preset rigidity requirement, determining a target influence factor;
and optimizing the rigidity of the automobile steering system according to the target influence factor.
Since the terminal device described in this embodiment is a terminal device used for implementing the stiffness determination method of the steering system of the vehicle in this embodiment, based on the stiffness determination method of the steering system of the vehicle described in this embodiment, a person skilled in the art can understand a specific implementation manner of the terminal device of this embodiment and various variations thereof, and therefore, how to implement the method in this embodiment by using the terminal device is not described in detail here. The terminal device used by a person skilled in the art to implement the method for processing information in the embodiment of the present application is within the scope of the protection intended by the present application.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: the method comprises the steps of obtaining a three-dimensional model of the automobile steering system; establishing a corresponding boundary condition for the three-dimensional model, wherein the boundary condition is used for constraining a constrained position in the three-dimensional model; determining load information required to be applied by the three-dimensional model; and judging the rigidity of the automobile steering system of the three-dimensional model according to the boundary condition and the load information so as to determine whether the automobile steering system meets the preset rigidity requirement. In the scheme, the boundary condition is established for the three-dimensional model of the automobile steering system, the corresponding load information is applied, then the rigidity of the three-dimensional model is judged according to the boundary condition and the load information, whether the automobile steering system meets the preset rigidity requirement or not is judged intelligently, conveniently and efficiently, and therefore the convenience and the accuracy of the rigidity judgment of the automobile steering system are improved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A rigidity determination method for an automobile steering system, characterized by comprising:
acquiring a three-dimensional model of the automobile steering system;
establishing a corresponding boundary condition for the three-dimensional model, wherein the boundary condition is used for constraining a constrained position in the three-dimensional model;
determining load information required to be applied by the three-dimensional model;
and judging the rigidity of the automobile steering system of the three-dimensional model according to the boundary condition and the load information so as to determine whether the automobile steering system meets the preset rigidity requirement.
2. The method of claim 1, wherein said determining a stiffness of a steering system of the vehicle from the three-dimensional model based on the boundary conditions and the load information comprises:
according to the boundary conditions and the load information, performing mechanical solution on the three-dimensional model to obtain displacement information of the automobile steering system;
and judging whether the displacement information meets the rigidity requirement of the preset.
3. The method of claim 2, wherein the displacement information comprises a first displacement and/or a second displacement, and wherein determining whether the displacement information satisfies a pre-configured stiffness requirement comprises:
judging whether the first displacement and/or the second displacement are smaller than or equal to corresponding preset displacement values or not;
the first displacement is a displacement value of a steering column fixed point in the automobile steering system in a first direction, and the second displacement is a displacement of a steering wheel central point in the automobile steering system along a direction perpendicular to the steering column.
4. The method of claim 1, wherein the determining the load information required to be applied by the three-dimensional model comprises:
determining a position, which is a fixed distance from the central point of a steering wheel and downwards along a steering column, in the automobile steering system as a force application action point;
determining a first direction acting force and a second direction acting force acting on the force application point;
and acquiring the load information according to the first direction acting force, the second direction acting force and the force application point.
5. The method of claim 4, wherein the obtaining the load information based on the first directional force, the second directional force, and the point of application of force comprises:
determining a comprehensive acting force acting on the force application point according to the first direction acting force and the second direction acting force;
and determining the comprehensive acting force as the load information.
6. The method of claim 5, wherein the direction of the combined force is at an angle of 30 ° to the first direction in which the first direction force is applied.
7. The method according to any one of claims 1-6, further comprising:
when the automobile steering system does not meet the preset rigidity requirement, determining a target influence factor;
and optimizing the rigidity of the automobile steering system according to the target influence factor.
8. A rigidity determination device of an automobile steering system, characterized by comprising: the device comprises an acquisition module, an establishment module, a determination module and a judgment module, wherein:
the acquisition module is used for acquiring a three-dimensional model of the automobile steering system;
the establishing module is used for establishing corresponding boundary conditions for the three-dimensional model, and the boundary conditions are used for constraining the constrained position in the three-dimensional model;
the determining module is used for determining the load information required to be applied by the three-dimensional model;
and the judging module is used for judging the rigidity of the automobile steering system of the three-dimensional model according to the boundary condition and the load information so as to determine whether the automobile steering system meets the preset rigidity requirement.
9. A terminal device, characterized in that the terminal device comprises: a processor, a memory, a communication interface, and a bus; the processor, the memory and the communication interface are connected through the bus and complete mutual communication; the memory stores executable program code; the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory for executing the rigidity determination method of the automobile steering system as set forth in any one of claims 1 to 7 above.
10. A computer-readable storage medium characterized by storing a program that executes the rigidity determination method for an automobile steering system according to any one of claims 1 to 7 when the program is run on a terminal device.
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| CN202210087025.4A CN114491815A (en) | 2022-01-25 | 2022-01-25 | Rigidity judgment method and device for automobile steering system, terminal device and medium |
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