Automobile bottom protection plate design method and device and storage medium

Abstract

The invention discloses an automobile bottom protection plate design method and device and a storage medium, and belongs to the technical field of automobile design. The method comprises the steps that S1, data information of an automobile bottom protection plate is collected; s2, the design requirements of the automobile bottom protection plate are determined; s3, determining constraint conditions based on the data information and design requirements, wherein the constraint conditions comprise size constraint and performance constraint; s4, completing the geometric profile design of the bottom guard plate of the first edition of the automobile based on constraint conditions; s5, checking whether the geometric profile design of the primary version of the automobile bottom protection plate meets the size requirement and the performance requirement or not; s6, the geometric profile data, meeting the requirements, of the automobile bottom protection plate are engineered, and engineered data are generated; s7, judging whether the engineering data of the bottom protection plate meets the requirements or not based on the size constraint, the performance constraint and the strength; and S8, finishing the design of the protection plate. According to the design method, performance requirement limitation can be added in the early stage of guard plate design, and the situation that efficiency is reduced due to multiple rounds of data modification caused by introduction of performance requirements after guard plate engineering is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile design, and in particular relates to a method, a device and a storage medium for designing an automobile bottom guard plate. Background Art

[0002] During the automobile design process, the design of the bottom guard plate is related to aerodynamic performance, passability, perceived quality, NVH performance, anti-corrosion performance, etc., and is an important part of the automobile exterior design. The existing design methods often only guide the guard plate design through boundary size restrictions. This method can achieve engineering feasible guard plate parts, but does not consider various performance requirements. After the design is completed, the guard plate data often needs to be readjusted for various performances, which leads to low work efficiency. Summary of the invention

[0003] In view of the problems that the existing guard plate parts design does not take various performance requirements into consideration, and the guard plate data often needs to be readjusted after the design is completed, resulting in low work efficiency, the present invention provides a method, equipment and storage medium for designing an automobile bottom guard plate. The design method can realize the addition of performance requirement restrictions in the early stage of guard plate design, reduce the introduction of performance requirements after the guard plate is engineered, generate multiple rounds of data modifications, and thus reduce the efficiency.

[0004] The present invention is achieved through the following technical solutions:

[0005] In a first aspect, an embodiment of the present invention provides a method for designing a vehicle bottom guard plate, which specifically comprises the following steps:

[0006] S1. Collect data information of the bottom guard plate of the automobile;

[0007] S2. Determine the design requirements for the bottom guard plate of the vehicle;

[0008] S3. Determine constraints based on data information and design requirements, including size constraints and performance constraints;

[0009] S4. Complete the geometric surface design of the first version of the bottom guard plate of the car based on the constraint conditions;

[0010] S5. Check the geometric design of the first version of the bottom guard plate of the car to see if it meets the requirements;

[0011] S6. Engineering the geometric surface data of the automobile bottom guard plate that meets the requirements to generate engineering data;

[0012] S7. Determine whether the engineering data of the bottom guard plate meets the requirements based on the size constraints, performance constraints and strength;

[0013] S8. Complete the guard plate design;

[0014] The guard plate design phase is completed, samples are processed and tested for verification, and a test report is issued after the test verification confirms that the requirements are met, and the guard plate development is completed.

[0015] Furthermore, in step S1, the data information includes: guard plate layout position and coverage area.

[0016] Furthermore, in step S2, the design requirements include: development cost, weight, development plan time and processing technology; wherein, the development cost includes design and development fee, mold fee, material fee and test fee; the weight includes the weight of the part, which is a comprehensive consideration of cost and weight confirmation when the strength requirement is met; the development plan time includes the deadline for completion of development and the dates of each key development node; the processing technology includes injection molding and stamping.

[0017] Furthermore, in step S3, the dimensional constraints include: the guard plate is located below the front suspension, the front suspension is 200 mm above the ground, and the minimum ground clearance of the vehicle is 150 mm, so the guard plate design position needs to be between 150-200 mm above the ground.

[0018] Furthermore, in step S3, the performance constraints include: the appearance of the guard plate is beautiful, the surface curve of the guard plate is flat and continuous, the guard plate needs to contain drainage holes, the guard plate covers a large area, and sound-absorbing materials are added on the inside.

[0019] Furthermore, in step S5, if the requirements are met, proceed to the next step; if the requirements are not met, the geometric surface design is re-performed, the initial version of the data is re-verified and simulated, feedback is collected and modified until the data can meet both the dimensional constraints and the performance constraints, and the data design is considered complete.

[0020] Furthermore, in step S6, chamfers, rounded corners and fixed points are added.

[0021] In a second aspect, an embodiment of the present invention further provides a computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, a method for designing a vehicle bottom guard plate as described in any one of the embodiments of the present invention is implemented.

[0022] In a third aspect, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a method for designing a vehicle bottom guard plate as described in any one of the embodiments of the present invention.

[0023] Compared with the prior art, the advantages of the present invention are as follows:

[0024] A method for designing an underbody guard plate of an automobile of the present invention introduces relevant performance design constraints into the underbody guard plate design. Compared with other guard plate design methods that only perform size constraints, the method can identify key performance requirements at an early stage, reduce the repetition of solutions caused by failure to meet performance requirements in the later stage, and improve design efficiency; and avoid introducing other performance requirements after the guard plate size design is completed, thereby reducing the guard plate design efficiency and actual performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0026] Figure 1 A schematic diagram of a process of designing a vehicle bottom guard plate according to the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of an electronic device in Embodiment 2 of the present invention. DETAILED DESCRIPTION

[0028] In order to clearly and completely describe the technical solution and its specific working process of the present invention, the specific implementation methods of the present invention are as follows in conjunction with the accompanying drawings of the specification:

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0032] Example 1

[0033] like Figure 1 FIG. 1 is a flow chart of a method for designing a vehicle bottom guard plate provided in this embodiment, wherein the method specifically comprises the following steps:

[0034] Step 1: Collect data information of the bottom guard plate of the car;

[0035] Receive basic information on the guard plate design, such as the guard plate layout location (such as under the front subframe, on the side of the power battery, etc.), approximate coverage area (such as shielding the suspension swing arm area to prevent stone impact during driving), development method (new development or development based on existing data), etc.;

[0036] Step 2: Determine the design requirements of the bottom guard plate of the car;

[0037] The guard plate design engineering requires input, including development costs (design and development fees, mold costs, material costs, testing costs, etc.), weight requirements (weight requirements of parts are met, and cost and weight are confirmed by comprehensive consideration), development plan (the deadline for development completion and the dates of each key development node, such as the design data lock date, test verification date, development completion date, etc.), special requirements (the combustion characteristics requirements of interior guard plates must comply with the national standard GB8410-2006, cold and heat resistance, impact resistance, corrosion resistance, etc.), and processing technology requirements (injection molding, stamping, etc.).

[0038] Step 3: Determine constraints based on data information and design requirements, including size constraints and performance constraints;

[0039] According to the allocation of the guard plate layout space structure, confirm the guard plate design size constraints. (For example, the guard plate is located below the front suspension, the front suspension is 200mm above the ground, and the minimum ground clearance of the vehicle is 150mm, then the guard plate design position must be between 150-200mm above the ground);

[0040] Collect the performance constraints related to the guard plate, such as sensory precision (the appearance of the guard plate should be aesthetically pleasing), aerodynamics (the smoothness and continuity of the surface curve of the guard plate), water management (the guard plate needs to contain drainage holes), NVH (the guard plate needs to cover as large an area as possible, and sound-absorbing materials should be added inside), etc.

[0041] Step 4: Complete the geometric surface design of the initial version of the car bottom guard plate based on the constraints;

[0042] According to the collected constraints, the guard plate profile is designed. The initial design needs to consider the size constraints and basic performance constraints. Some data details may not be reflected for the time being (such as the position of the fixed point, local chamfering, etc.).

[0043] Step 5: Check the geometric design of the first version of the bottom guard plate of the car to see if it meets the requirements;

[0044] If the requirements are met, proceed to the next step; if the requirements are not met, identify the unsatisfactory conditions and redesign the geometric surface;

[0045] The initial version of the data is sent to the dimensional and performance professionals for data verification and simulation analysis, and feedback is collected and modified until the data can meet both dimensional and performance constraints, and the data design is considered complete.

[0046] Step 6: Engineering the geometric surface data of the automobile bottom guard plate that meets the requirements to generate engineering data;

[0047] Add processing details such as chamfers, fillets, and fixing points;

[0048] Step 7: Determine whether the engineering data of the bottom guard plate meets the requirements based on size constraints, performance constraints and strength;

[0049] If the requirements are met, proceed to the next step. If the requirements are not met, identify the unsatisfactory conditions and re-engineer the data design.

[0050] The engineering data is checked for size constraints, performance constraints, and strength to confirm whether the engineering data still meets the above constraint requirements. For example, if the addition of reinforcement ribs after engineering affects the size constraints, if the local sinking pit at the fixed point after engineering is too deep, affecting the integrity of the guard plate surface, if the position and size of the drainage hole are unreasonable, or if the fixed point strength is insufficient, etc., data optimization and adjustment are required to solve these problems.

[0051] Step 8: Complete the guard plate design;

[0052] The guard plate data that meets the requirements will be reviewed by experts to confirm whether it meets all the size requirements, performance requirements and strength requirements. If it meets the requirements, proceed to the next step. If it does not meet the requirements, identify the unsatisfactory situations and optimize them in a targeted manner, and then re-evaluate after optimization;

[0053] The engineering design data is completed and, after expert review, confirmed to have met the size, performance and strength requirements, the design data is locked.

[0054] Step 9: Complete the guard plate design;

[0055] The guard plate design phase is completed, samples are processed and tested for verification, and a test report is issued after the test verification confirms that the requirements are met, and the guard plate development is completed.

[0056] Example 2

[0057] Figure 2 This is a schematic diagram of the structure of a computer device in Example 2 of the present invention. Figure 2 A block diagram of an exemplary computer device 12 suitable for use in implementing embodiments of the present invention is shown. Figure 2 The computer device 12 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0058] like Figure 2 As shown, the computer device 12 is in the form of a general-purpose computing device. The components of the computer device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 that connects various system components (including the system memory 28 and the processing unit 16).

[0059] Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor or a local bus using any of a variety of bus architectures. By way of example, these architectures include, but are not limited to, an Industry Standard Architecture (ISA) bus, a Micro Channel Architecture (MAC) bus, an Enhanced ISA bus, a Video Electronics Standards Association (VESA) local bus, and a Peripheral Component Interconnect (PCI) bus.

[0060] The computer device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by the computer device 12, including volatile and non-volatile media, removable and non-removable media.

[0061] The system memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache memory 32. The computer device 12 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, the storage system 34 may be used to read and write non-removable, non-volatile magnetic media ( Figure 2 not shown, usually called a "hard drive"). Although Figure 2Not shown in the figure, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk"), and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, a DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to the bus 18 via one or more data medium interfaces. The memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to perform the functions of the various embodiments of the present invention.

[0062] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in the memory 28. Such program modules 42 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment. The program modules 42 generally perform the functions and / or methods of the embodiments described herein.

[0063] The computer device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), may also communicate with one or more devices that enable a user to interact with the computer device 12, and / or communicate with any device that enables the computer device 12 to communicate with one or more other computing devices (e.g., network card, modem, etc.). Such communication may be performed through an input / output (I / O) interface 22. In addition, the computer device 12 in this embodiment, the display 24 does not exist as an independent individual, but is embedded in the mirror surface, and when the display surface of the display 24 is not displayed, the display surface of the display 24 and the mirror surface are visually integrated. In addition, the computer device 12 may also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN) and / or public network, such as the Internet) through a network adapter 20. As shown in the figure, the network adapter 20 communicates with other modules of the computer device 12 through a bus 18. It should be understood that although not shown in the figures, other hardware and / or software modules may be used in conjunction with the computer device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0064] The processing unit 16 executes various functional applications and data processing by running the programs stored in the system memory 28, such as implementing a method for designing a vehicle bottom guard plate provided in an embodiment of the present invention.

[0065] Example 3

[0066] Embodiment 3 of the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a method for designing a vehicle bottom guard plate as provided in all the embodiments of the present application.

[0067] Any combination of one or more computer-readable media may be used. A computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, device, or device.

[0068] Computer-readable signal media may include a data signal propagated in baseband or as part of a carrier wave, which carries a computer-readable program code. Such propagated data signals may take a variety of forms, including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0069] Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0070] Computer program code for performing the operations of the present invention may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0071] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for designing a bottom guard plate of an automobile, characterized in that: The specific steps include: S1. Collect data information of the bottom guard plate of the automobile; S2. Determine the design requirements for the bottom guard plate of the vehicle; S3. Determine constraints based on data information and design requirements, including size constraints and performance constraints; S4. Complete the geometric surface design of the first version of the bottom guard plate of the car based on the constraint conditions; S5. Check the geometric design of the first version of the bottom guard plate of the car to see if it meets the requirements; S6. Engineering the geometric surface data of the automobile bottom guard plate that meets the requirements to generate engineering data; S7. Determine whether the engineering data of the bottom guard plate meets the requirements based on the size constraints, performance constraints and strength; S8. Complete the guard plate design; The guard plate design phase is completed, samples are processed and tested for verification, and a test report is issued after the test verification confirms that the requirements are met, and the guard plate development is completed.

2. A method for designing a bottom guard plate of an automobile as claimed in claim 1, characterized in that: In step S1, the data information includes: the layout position and coverage area of ​​the guard plate.

3. A method for designing a bottom guard plate of an automobile as claimed in claim 1, characterized in that: In step S2, the design requirements include: development cost, weight, development plan time and processing technology; among which, the development cost includes design and development fee, mold fee, material fee and test fee; the weight includes the comprehensive consideration of cost and weight confirmation when the strength requirement of the part is met; the development plan time includes the deadline for completion of development and the dates of each key development node; the processing technology includes injection molding and stamping.

4. A method for designing a bottom guard plate of an automobile as claimed in claim 1, characterized in that: In step S3, the size constraints include: the guard plate is located below the front suspension, the front suspension is 200 mm above the ground, and the minimum ground clearance of the vehicle is 150 mm, so the guard plate design position must be between 150-200 mm above the ground.

5. A method for designing a bottom guard plate of an automobile as claimed in claim 1, characterized in that: In step S3, the performance constraints include: the appearance of the guard plate is beautiful, the surface curve of the guard plate is flat and continuous, the guard plate must contain drainage holes, the guard plate covers a large area, and sound-absorbing materials are added on the inside.

6. A method for designing a bottom guard plate of an automobile as claimed in claim 1, characterized in that: In step S5, if the requirements are met, proceed to the next step. If the requirements are not met, the geometric surface design is redone, the initial version of the data is re-checked and simulated, feedback is collected and modified until the data can meet both the dimensional constraints and the performance constraints, and the data design is considered complete.

7. A method for designing a bottom guard plate of an automobile as claimed in claim 1, characterized in that: In step S6, chamfers, rounded corners and fixing points are added.

8. A computer device, characterized in that: The invention comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, a method for designing a vehicle bottom guard plate as described in any one of claims 1 to 7 is implemented.

9. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the program is executed by a processor, a method for designing a vehicle bottom guard plate as described in any one of claims 1 to 7 is implemented.

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