CN112036066B - Method and device for arranging damping pad of vehicle body, electronic equipment and storage medium - Google Patents
Method and device for arranging damping pad of vehicle body, electronic equipment and storage medium Download PDFInfo
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- 238000013016 damping Methods 0.000 title claims abstract description 98
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- 239000000725 suspension Substances 0.000 claims description 8
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Abstract
The invention relates to the technical field of vehicle body design, in particular to a method and a device for arranging a vehicle body damping pad, electronic equipment and a storage medium. The method comprises the following steps: performing finite element analysis on a target vehicle, and acquiring a vehicle body load point set according to a finite element analysis result; performing real vehicle working excitation simulation on a target vehicle according to the vehicle body load point set, and acquiring excitation response data corresponding to all vehicle body sheet metal areas of the target vehicle; generating a vibration energy cloud image according to the excitation response data and the target vehicle; and arranging the damping pad of the vehicle body according to the vibration energy cloud picture. The sheet metal vibration energy of the running state of the vehicle is obtained and visualized, the damping pads are arranged at the energy concentration position, the damping pads are arranged in an optimized mode, the production cost is reduced, the noise reduction effect is also improved, the time for optimizing and modifying in the later period is saved, the working efficiency of the arrangement of the damping pads is greatly improved, and the device has good operability and convenience.
Description
Technical Field
The invention relates to the technical field of vehicle body design, in particular to a method and a device for arranging a vehicle body damping pad, electronic equipment and a storage medium.
Background
In automotive engineering applications, damping pads are commonly used to reduce road noise and other noise generated by vehicle body sheet metal vibration during automotive travel. In the prior art, the vehicle body mode is basically calculated through finite element software, the displacement results of the modes are overlapped, the position where the displacement is maximum is estimated, and the arrangement is carried out by relying on the experience of engineers. Some host factories adopt a standard alignment arrangement mode, refer to an arrangement similar to a vehicle type, and plan the position of a damping pad by combining the practical experience of a designer. Methods of either modal stacking or benchmarking require an engineer with a great deal of design experience. The suitable damping pad arrangement locations for different vehicle bodies, different chassis, different power assemblies are not necessarily identical. Even engineers with very abundant engineering experience have difficulty in determining that too much arrangement can increase manufacturing cost, weight and oil consumption, too little arrangement cannot have the due effect, if the arrangement position of the damping pad is not suitable, the noise in a vehicle can be increased, so that a certain difficulty exists in engineering application through a mode superposition method and an empirical arrangement method.
Disclosure of Invention
The invention mainly aims to provide a method and a device for arranging a damping pad of a vehicle body, electronic equipment and a storage medium, and aims to solve the technical problem of vehicle body vibration energy dissipation caused by improper arrangement of the damping pad in the prior art.
In order to achieve the above object, the present invention provides a method for arranging a damping mat for a vehicle body, the method comprising:
performing finite element analysis on a target vehicle, and acquiring a vehicle body load point set according to a finite element analysis result;
performing real vehicle working excitation simulation on a target vehicle according to the vehicle body load point set, and acquiring excitation response data corresponding to all vehicle body sheet metal areas of the target vehicle;
generating a vibration energy cloud image according to the excitation response data and the target vehicle;
and arranging the damping pad of the vehicle body according to the vibration energy cloud picture.
Optionally, the step of performing finite element analysis on the target vehicle and obtaining the vehicle body load point set according to the finite element analysis result specifically includes:
and carrying out finite element analysis on the target vehicle, acquiring load position information of the target vehicle according to a finite element analysis result, taking points corresponding to each load position as vehicle body load points, and generating a vehicle body load point set according to the vehicle body load points.
Optionally, the step of performing real vehicle working excitation simulation on the target vehicle according to the vehicle body load point set and acquiring excitation response data corresponding to all vehicle body sheet metal areas of the target vehicle specifically includes:
acquiring a vehicle body vibration frequency interval in a real vehicle working state, and acquiring unit force loads corresponding to each vehicle body load point in the vehicle body load point set according to the vehicle body vibration frequency interval;
applying corresponding unit force load to the load point of the vehicle body so as to simulate the working excitation of the vehicle;
and acquiring regional excitation responses corresponding to each vehicle body sheet metal region according to the vehicle body vibration frequency interval, and generating excitation response data according to the regional excitation responses.
Optionally, before the step of obtaining the area excitation response corresponding to each vehicle body sheet metal area according to the vehicle body vibration frequency interval and generating excitation response data according to the area excitation response, the method further includes:
and acquiring a vehicle model corresponding to the target vehicle, and determining all vehicle body sheet metal areas of the target vehicle according to the vehicle model.
Optionally, the vehicle body load points include wheel core load points and suspension mounting points; the unit force comprises a wheel core force;
the step of applying a unit force load to a vehicle body load point to perform real vehicle working excitation simulation specifically comprises the following steps:
and loading the wheel core force on the wheel core load point, and applying a unit force load on the suspension mounting point to perform real vehicle working excitation simulation.
Optionally, the step of generating a vibration energy cloud image with the target vehicle according to the excitation response data specifically includes:
acquiring superposition response energy values of all the vehicle body sheet metal areas according to the excitation response data, and acquiring vibration energy levels of all the vehicle body sheet metal areas according to the superposition response energy values;
and acquiring a preset grade color corresponding to the vibration energy grade, and constructing a vibration energy cloud picture based on the target vehicle according to the preset grade color.
Optionally, before the step of arranging the damping pad of the vehicle body according to the vibration energy cloud chart, the method further comprises:
acquiring a vibration energy level interval according to the vehicle safety vibration energy, and acquiring a preset level color set corresponding to the vibration energy level interval;
the step of arranging the damping pad of the vehicle body according to the vibration energy cloud picture specifically comprises the following steps:
acquiring a target grade color corresponding to the preset grade color set, and taking a region coated with the target grade color in the vibration energy cloud picture as a damping pad arrangement region;
and arranging the damping cushion of the vehicle body according to the damping cushion arrangement area.
In addition, in order to achieve the above object, the present invention also proposes a vehicle body damping pad arrangement device comprising:
the finite element analysis module is used for carrying out finite element analysis on the target vehicle and acquiring a vehicle body load point set according to a finite element analysis result;
the excitation simulation module is used for performing real vehicle working excitation simulation on the target vehicle according to the vehicle body load point set and acquiring excitation response data corresponding to all vehicle body sheet metal areas of the target vehicle;
the cloud image generation module is used for generating a vibration energy cloud image with the target vehicle according to the excitation response data;
and the damping pad arrangement module is used for arranging the damping pads of the vehicle body according to the vibration energy cloud picture.
In addition, to achieve the above object, the present invention also proposes an electronic device including: the vehicle body damping cushion arrangement device comprises a memory, a processor and a vehicle body damping cushion arrangement program which is stored on the memory and can run on the processor, wherein the vehicle body damping cushion arrangement program is configured to realize the steps of the vehicle body damping cushion arrangement method.
In addition, in order to achieve the above object, the present invention also proposes a storage medium having stored thereon a vehicle body damping cushion arrangement program which, when executed by a processor, implements the steps of the vehicle body damping cushion arrangement method as described above.
According to the method, the target vehicle is subjected to finite element analysis, and a vehicle body load point set is obtained according to a finite element analysis result; performing real vehicle working excitation simulation on a target vehicle according to the vehicle body load point set, and acquiring excitation response data corresponding to all vehicle body sheet metal areas of the target vehicle; generating a vibration energy cloud image according to the excitation response data and the target vehicle; and arranging the damping pad of the vehicle body according to the vibration energy cloud picture. The sheet metal vibration energy of the running state of the vehicle is obtained and visualized, the damping pad is arranged at the energy concentration position, and the damping pad is arranged in an optimized mode, so that the production cost is reduced, and the noise reduction effect is also improved. The method reduces the influence of the experience of engineers, omits the time of post-optimization correction, greatly improves the working efficiency, and has good operability and convenience.
Drawings
FIG. 1 is a schematic diagram of an electronic device of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flow chart of a first embodiment of a method for disposing a damping pad for a vehicle body according to the present invention;
FIG. 3 is a flow chart of a second embodiment of a method for disposing a damping pad for a vehicle body according to the present invention;
FIG. 4 is a schematic diagram of load loading of an embodiment of a method for disposing a vehicle body damping pad according to the present invention;
FIG. 5 is a vibration energy cloud of a region of a vehicle body according to an embodiment of the method of the present invention;
fig. 6 is a block diagram showing the structure of a first embodiment of the vehicle body cushion mounting device of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device in a hardware running environment according to an embodiment of the present invention.
As shown in fig. 1, the electronic device may include: a processor 1001, such as a central processing unit (Central Processing Unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, a memory 1005. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WIreless-FIdelity (WI-FI) interface). The Memory 1005 may be a high-speed random access Memory (Random Access Memory, RAM) Memory or a stable nonvolatile Memory (NVM), such as a disk Memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
Those skilled in the art will appreciate that the structure shown in fig. 1 is not limiting of the electronic device and may include more or fewer components than shown, or may combine certain components, or may be arranged in different components.
As shown in fig. 1, an operating system, a network communication module, a user interface module, and a vehicle body cushion arrangement program may be included in the memory 1005 as one type of storage medium.
In the electronic device shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the electronic device of the present invention may be provided in the electronic device, where the electronic device invokes the vehicle body damping cushion arrangement program stored in the memory 1005 through the processor 1001, and executes the vehicle body damping cushion arrangement method provided by the embodiment of the present invention.
An embodiment of the invention provides a method for arranging a damping pad of a vehicle body, and referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the method for arranging the damping pad of the vehicle body.
In this embodiment, the method for disposing the damping pad of the vehicle body includes the following steps:
step S10: and carrying out finite element analysis on the target vehicle, and acquiring a vehicle body load point set according to the finite element analysis result.
It should be noted that, the target vehicle is a vehicle to be provided with a damping pad, and the execution main body of the embodiment of the invention is a vehicle body damping pad arrangement device. And acquiring the load born by the vehicle in actual running through finite element analysis, taking the points born by the load as discrete points, and summarizing all the discrete points to form the vehicle body load point set.
Step S20: and carrying out real-vehicle working excitation simulation on the target vehicle according to the vehicle body load point set, and acquiring excitation response data corresponding to all vehicle body sheet metal areas of the target vehicle.
It is easy to understand that each load point in the vehicle body load point set is a point where the vehicle receives load in the actual running process, and the load is various forces received by the actual vehicle in working, and load data received by each load point in working of the vehicle is obtained according to the working condition of the actual vehicle. The load data includes the direction of the load, the size of the load, etc. And applying a load to a load point on the target vehicle according to the load data.
It should be understood that in the actual running process, the vehicle body also bears corresponding vibration due to vibration caused by running shake of the vehicle caused by road surface flatness, vibration caused by operation of devices such as a vehicle engine and a clutch, vibration caused by stepping on a brake pedal by a user, and the like, and when the vehicle body is excited by the outside, the vehicle body can respond, so that excitation response data corresponding to each sheet metal area of the vehicle body can be acquired when the vehicle body responds.
Step S30: and generating a vibration energy cloud image according to the excitation response data and the target vehicle.
It is easy to understand that applying excitation to the target vehicle, excitation response data, that is, vibration radiation energy, corresponding to each of the body sheet metal regions on the target vehicle is obtained accordingly. Scanning a vehicle body, obtaining a vehicle body sheet metal model according to the vehicle body sheet metal areas, obtaining the corresponding vibration radiation energy according to excitation response data, superposing the vibration radiation energy corresponding to each excitation frequency of each vehicle body sheet metal area in a preset frequency interval, and performing visual processing on the vehicle body sheet metal model according to the vibration radiation energy to obtain a vibration energy cloud picture.
In the specific implementation, the sheet metal region of the vehicle body is divided into a plurality of subareas, vibration energy corresponding to each subarea is obtained, and each subarea is colored according to a preset color corresponding to the vibration energy. The larger the vibration radiation energy, the higher the brightness of the preset color may be set.
Step S40: and arranging the damping pad of the vehicle body according to the vibration energy cloud picture.
It is easy to understand that the damping pad is arranged on the sheet metal of the vehicle body, the weight and vibration of the vehicle body need to be considered, the excitation exceeds the bearing capacity of the sheet metal of the vehicle body, the damage to the vehicle body or the excessive vibration noise is easy to be caused, the highest vibration energy value of the vehicle body in the range is obtained according to the preset vehicle body noise range (the noise limit value of the vehicle outside the vehicle (M1 type vehicle) specified in GB-1495-2002 is 74dB (decibel), the preset vehicle body noise range can be set to be within 74 dB), the color range with the vibration radiation energy larger than the highest vibration energy value is obtained, the area corresponding to the color range on the vibration energy cloud picture is obtained as the area for arranging the damping pad, and the damping pad is arranged according to the area.
According to the embodiment of the invention, through the method, the sheet metal vibration energy in the running state of the vehicle is obtained and visualized, the damping pad is arranged at the energy concentration position, and the damping pad is arranged in an optimized mode, so that the production cost is reduced, and the noise reduction effect is also improved. The method reduces the influence of the experience of engineers, omits the time of post-optimization correction, greatly improves the working efficiency, and has good operability and convenience.
Referring to fig. 3, fig. 3 is a flowchart illustrating a method for disposing a damping pad of a vehicle body according to a second embodiment of the present invention. Referring to fig. 4, fig. 4 is a load loading schematic diagram of an embodiment of a method for disposing a damping pad of a vehicle body according to the present invention. Based on the first embodiment, the method for disposing a damping pad for a vehicle body according to the present embodiment specifically includes, at step S10:
step S101: and carrying out finite element analysis on the target vehicle, acquiring load position information of the target vehicle according to a finite element analysis result, taking points corresponding to each load position as vehicle body load points, and generating a vehicle body load point set according to the vehicle body load points.
It is easy to understand that a regular grid can be set on a body model of a target vehicle in advance, stress conditions of each grid are analyzed to obtain stress points of loads, positions of the stress points are used as load positions, the stress points are used as body load points, and all the body load points are collected to generate a body load point set.
The step S20 specifically includes:
step S201: and acquiring a vehicle body vibration frequency interval in a real vehicle working state, and acquiring unit force loads corresponding to each vehicle body load point in the vehicle body load point set according to the vehicle body vibration frequency interval.
The vehicle body vibration frequency interval may be set to be 10 to 800 hz, where the vehicle body vibration frequency is a vibration frequency interval that the vehicle may receive during actual vehicle operation, and a section of a unit force load corresponding to the vehicle body load point during actual vehicle driving is obtained according to the vehicle body vibration frequency interval, that is, a section of actual vehicle operation excitation is obtained.
Step S202: and applying corresponding unit force load to the load point of the vehicle body so as to simulate the working excitation of the vehicle.
And applying real vehicle working excitation to the vehicle body load point according to each corresponding vehicle body vibration frequency in the vehicle body vibration frequency interval, so that the vehicle body responds according to the excitation to acquire response signals of each region on the vehicle body and generate excitation response data.
The vehicle body load points comprise wheel core load points and suspension mounting points; the unit force comprises a wheel core force; step S202 specifically includes: and loading the wheel core force on the wheel core load point, and applying a unit force load on the suspension mounting point to perform real vehicle working excitation simulation.
Referring to fig. 4, each point in fig. 4 is a point where a load force is applied, and a point A, B, C, D is a point where a load force is applied to a wheel core, and it is easy to understand that in a specific implementation, more and more refined load points may be included on a vehicle body, and this embodiment is merely for illustration. The wheel core of the automobile bearing is the bearing inner ring, and the automobile suspension is used as a force transmission part for connecting the frame (or the automobile body) and the axle (or the wheel); in the running process, the wheels rotate to be in direct contact with the road surface, if uneven parts exist on the road surface, the wheels pass through the uneven areas to cause the vibration of the vehicle body, and the uneven parts are related to the wheels and the vibration reduction, so that unit force load can be applied to the suspension mounting points through loading the wheel core load points to simulate the working excitation of the vehicle.
Step S203: and acquiring regional excitation responses corresponding to each vehicle body sheet metal region according to the vehicle body vibration frequency interval, and generating excitation response data according to the regional excitation responses.
It is easy to understand that the damping pad is arranged in the sheet metal region of the vehicle body, and thus the excitation response is obtained according to the sheet metal region. Since the vehicle body has a glass region and other portions in addition to the sheet metal region, it is necessary to obtain all the sheet metal regions of the vehicle body. Further, the embodiment of the invention calculates the vibration radiation energy of the sheet metal which is not subjected to surface treatment.
Prior to step S203, further comprising: and acquiring a vehicle model corresponding to the target vehicle, and determining all vehicle body sheet metal areas of the target vehicle according to the vehicle model.
It is easy to understand that vehicles of different models have different sheet metal areas (for example, glass skylights exist on the roofs of vehicles of certain models, the roofs are partial area sheet metal partial area skylights, but the roofs of partial models are not provided with skylights, and all the roof areas are sheet metal), so that the vehicle types corresponding to the target vehicles are obtained in advance, and all the sheet metal areas of the body of the target vehicle are determined according to the vehicle types.
Further, in the step S30, the method specifically includes:
step S301: and acquiring the superposition response energy value of each vehicle body sheet metal region according to the excitation response data, and acquiring the vibration energy level of each vehicle body sheet metal region according to the superposition response energy value.
It is easy to understand that, for example, the sheet metal region of the vehicle body has regions such as a front wall plate, a floor, a wheel pack, a spare tire groove, a side wall and a ceiling, and the like, each region is divided into smaller subregions, the response of each subregion corresponding to all frequencies is calculated in the vibration frequency interval, and the sum of the responses is obtained. Further, the vibration energy values correspond to different levels, for example, the first preset energy value is set to be one level or less, the second preset energy value is set to be two levels or more, and the like, and each region is classified.
Step S302: and acquiring a preset grade color corresponding to the vibration energy grade, and constructing a vibration energy cloud picture based on the target vehicle according to the preset grade color.
It should be noted that, referring to fig. 5, fig. 5 is a vibration energy cloud image of a certain area of a vehicle body according to an embodiment of the method for disposing a damping pad of a vehicle body of the present invention. Referring to fig. 5, the areas corresponding to X (horizontal bar area) are skylights, and W, Y, X respectively correspond to different preset grade colors (for convenience of explanation, the color is replaced by texture here, and the actual color is shown in practice). The vibration energy of the area corresponding to the W color is smaller than that of the area corresponding to the Y color, and the area corresponding to the Y color is smaller than that of the area corresponding to the X color.
Before step S40, the method further includes:
step S401: and acquiring a vibration energy level interval according to the vehicle safety vibration energy, and acquiring a preset level color set corresponding to the vibration energy level interval.
It is easy to understand that the vehicle safety vibration energy is vibration energy corresponding to noise which keeps the noise of the vehicle to meet national standards and is more consistent with the noise tolerance degree of the user. After the vibration energy level interval is obtained, a preset level color set is obtained according to colors corresponding to energy levels in the interval. For example, the vibration energy level interval is first-level and second-level, and corresponds to the X color and the Y color respectively, and the preset level color set includes the W color and the Y color.
Step S40 specifically includes:
step S402: and acquiring a target grade color corresponding to the preset grade color set, and taking a region coated with the target grade color in the vibration energy cloud picture as a damping pad arrangement region.
Step S403: and arranging the damping cushion of the vehicle body according to the damping cushion arrangement area.
It will be readily appreciated that, referring to fig. 5, the areas covered by the X and Y colors are selected as the damper pad arrangement areas. The arrangement of the damping pads is performed according to the corresponding areas. In the embodiment of the invention, a plan view is adopted for convenience of explanation, but in specific implementation, the vibration energy cloud image of the target vehicle can be a perspective view which can be split into a partial view and an explosion view, so that the damping pad arrangement scheme is more stereoscopic.
According to the embodiment of the invention, the sheet metal vibration energy of the running state of the vehicle is obtained and visualized through the method, the damping pad is arranged at the energy concentration position, and the damping pad is arranged in an optimized mode, so that the production cost is reduced, and the noise reduction effect is also improved. The method reduces the influence of the experience of engineers, omits the time of post-optimization correction, greatly improves the working efficiency, and has good operability and convenience.
Referring to fig. 6, fig. 6 is a block diagram showing the structure of a first embodiment of the vehicle body cushion arrangement device of the present invention.
As shown in fig. 6, the apparatus according to the embodiment of the present invention includes:
the finite element analysis module 10 is configured to perform finite element analysis on the target vehicle, and obtain a vehicle body load point set according to a finite element analysis result.
It should be noted that, the target vehicle is a vehicle to be provided with a damping pad, and the execution main body of the embodiment of the invention is a vehicle body damping pad arrangement device. And acquiring the load born by the vehicle in actual running through finite element analysis, taking the points born by the load as discrete points, and summarizing all the discrete points to form the vehicle body load point set.
And the excitation simulation module 20 is used for performing real vehicle working excitation simulation on the target vehicle according to the vehicle body load point set and acquiring excitation response data corresponding to all the vehicle body sheet metal areas of the target vehicle.
It is easy to understand that each load point in the vehicle body load point set is a point where the vehicle receives load in the actual running process, and the load is various forces received by the actual vehicle in working, and load data received by each load point in working of the vehicle is obtained according to the working condition of the actual vehicle. The load data includes the direction of the load, the size of the load, etc. And applying a load to a load point on the target vehicle according to the load data.
It should be understood that in the actual running process, the vehicle body also bears corresponding vibration due to vibration caused by running shake of the vehicle caused by road surface flatness, vibration caused by operation of devices such as a vehicle engine and a clutch, vibration caused by stepping on a brake pedal by a user, and the like, and when the vehicle body is excited by the outside, the vehicle body can respond, so that excitation response data corresponding to each sheet metal area of the vehicle body can be acquired when the vehicle body responds.
The cloud image generation module 30 is configured to generate a cloud image of vibration energy according to the excitation response data and the target vehicle.
It is easy to understand that applying excitation to the target vehicle, excitation response data, that is, vibration radiation energy, corresponding to each of the body sheet metal regions on the target vehicle is obtained accordingly. Scanning a vehicle body, obtaining a vehicle body sheet metal model according to the vehicle body sheet metal areas, obtaining the corresponding vibration radiation energy according to excitation response data, superposing the vibration radiation energy corresponding to each excitation frequency of each vehicle body sheet metal area in a preset frequency interval, and performing visual processing on the vehicle body sheet metal model according to the vibration radiation energy to obtain a vibration energy cloud picture.
In the specific implementation, the sheet metal region of the vehicle body is divided into a plurality of subareas, vibration energy corresponding to each subarea is obtained, and each subarea is colored according to a preset color corresponding to the vibration energy. The larger the vibration radiation energy, the higher the brightness of the preset color may be set.
And the damping pad arrangement module 40 is used for arranging the damping pads of the vehicle body according to the vibration energy cloud picture.
It is easy to understand that the damping pad is arranged on the sheet metal of the vehicle body, the weight and vibration of the vehicle body need to be considered, the excitation exceeds the bearing capacity of the sheet metal of the vehicle body, the damage to the vehicle body or the excessive vibration noise is easy to be caused, the highest vibration energy value of the vehicle body in the range is obtained according to the preset vehicle body noise range (the noise limit value of the vehicle outside the vehicle (M1 type vehicle) specified in GB-1495-2002 is 74dB (decibel), the preset vehicle body noise range can be set to be within 74 dB), the color range with the vibration radiation energy larger than the highest vibration energy value is obtained, the area corresponding to the color range on the vibration energy cloud picture is obtained as the area for arranging the damping pad, and the damping pad is arranged according to the area.
According to the embodiment of the invention, through the method, the sheet metal vibration energy in the running state of the vehicle is obtained and visualized, the damping pad is arranged at the energy concentration position, and the damping pad is arranged in an optimized mode, so that the production cost is reduced, and the noise reduction effect is also improved. The method reduces the influence of the experience of engineers, omits the time of post-optimization correction, greatly improves the working efficiency, and has good operability and convenience.
In addition, the embodiment of the invention also provides a storage medium, wherein the storage medium stores a vehicle body damping pad arrangement program, and the vehicle body damping pad arrangement program is used for executing the steps of the vehicle body damping pad arrangement method by a processor.
Because the storage medium adopts all the technical schemes of all the embodiments, the storage medium has at least all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted here.
It should be understood that the foregoing is illustrative only and is not limiting, and that in specific applications, those skilled in the art may set the invention as desired, and the invention is not limited thereto.
It should be noted that the above-described working procedure is merely illustrative, and does not limit the scope of the present invention, and in practical application, a person skilled in the art may select part or all of them according to actual needs to achieve the purpose of the embodiment, which is not limited herein.
In addition, technical details not described in detail in the present embodiment may refer to the method for disposing the damping pad of the vehicle body provided in any embodiment of the present invention, which is not described herein again.
Furthermore, it should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. Read Only Memory)/RAM, magnetic disk, optical disk) and including several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (8)
1. A method of arranging a vehicle body damping mat, the method comprising:
performing finite element analysis on a target vehicle, and acquiring a vehicle body load point set according to a finite element analysis result;
performing real vehicle working excitation simulation on a target vehicle according to the vehicle body load point set, and acquiring excitation response data corresponding to all vehicle body sheet metal areas of the target vehicle;
generating a vibration energy cloud image according to the excitation response data and the target vehicle;
arranging a damping pad of the vehicle body according to the vibration energy cloud picture;
the step of carrying out finite element analysis on the target vehicle and obtaining a vehicle body load point set according to the finite element analysis result specifically comprises the following steps:
carrying out finite element analysis on a target vehicle, acquiring the load born by the target vehicle in actual running according to a finite element analysis result, taking the points subjected to the load as discrete points, and summarizing all the discrete points to generate a vehicle body load point set;
the step of performing finite element analysis on a target vehicle, obtaining the load of the target vehicle in actual running according to the finite element analysis result, taking the points subjected to the load as discrete points, and summarizing all the discrete points to form a vehicle body load point set, specifically comprising the following steps:
carrying out finite element analysis on a target vehicle, acquiring load position information of a load received by the target vehicle in actual running according to a finite element analysis result, taking points corresponding to each load position as vehicle body load points, and generating a vehicle body load point set according to the vehicle body load points;
the step of performing finite element analysis on a target vehicle, acquiring load position information of a load received by the target vehicle in actual running according to a finite element analysis result, taking points corresponding to each load position as vehicle body load points, and generating a vehicle body load point set according to the vehicle body load points, specifically comprises the following steps:
setting regular grids on a body model of a target vehicle in advance, analyzing the stress condition of each grid of the target vehicle in actual running, obtaining stress points of loads, taking the positions of the stress points as load positions, taking the stress points as body load points, and collecting all the body load points to generate a body load point set;
before the step of arranging the damping pad of the vehicle body according to the vibration energy cloud picture, the method further comprises the following steps:
acquiring a vibration energy level interval according to the vehicle safety vibration energy, and acquiring a preset level color set corresponding to the vibration energy level interval;
the step of arranging the damping pad of the vehicle body according to the vibration energy cloud picture specifically comprises the following steps:
acquiring a target grade color corresponding to the preset grade color set, and taking a region coated with the target grade color in the vibration energy cloud picture as a damping pad arrangement region;
and arranging the damping cushion of the vehicle body according to the damping cushion arrangement area.
2. The method for arranging a damping cushion of a vehicle body according to claim 1, wherein the step of performing real vehicle operation excitation simulation on a target vehicle according to the set of vehicle body load points and acquiring excitation response data corresponding to all vehicle body sheet metal areas of the target vehicle specifically comprises the following steps:
acquiring a vehicle body vibration frequency interval in a real vehicle working state, and acquiring unit force loads corresponding to each vehicle body load point in the vehicle body load point set according to the vehicle body vibration frequency interval;
applying corresponding unit force load to the load point of the vehicle body so as to simulate the working excitation of the vehicle;
and acquiring regional excitation responses corresponding to each vehicle body sheet metal region according to the vehicle body vibration frequency interval, and generating excitation response data according to the regional excitation responses.
3. The method for arranging a damping pad of a vehicle body according to claim 2, wherein the step of obtaining the area excitation response corresponding to each of the sheet metal areas of the vehicle body according to the vehicle body vibration frequency interval and generating excitation response data according to the area excitation response further comprises:
and acquiring a vehicle model corresponding to the target vehicle, and determining all vehicle body sheet metal areas of the target vehicle according to the vehicle model.
4. A method of arranging a body damping cushion as recited in claim 3 wherein the body load points include wheel core load points, suspension mounting points; the unit force comprises a wheel core force;
the step of applying a unit force load to a vehicle body load point to perform real vehicle working excitation simulation specifically comprises the following steps:
and loading the wheel core force on the wheel core load point, and applying a unit force load on the suspension mounting point to perform real vehicle working excitation simulation.
5. The method of arranging a body damping cushion as recited in claim 4, wherein the step of generating a vibration energy cloud image from the excitation response data and the target vehicle specifically comprises:
acquiring superposition response energy values of all the vehicle body sheet metal areas according to the excitation response data, and acquiring vibration energy levels of all the vehicle body sheet metal areas according to the superposition response energy values;
and acquiring a preset grade color corresponding to the vibration energy grade, and constructing a vibration energy cloud picture based on the target vehicle according to the preset grade color.
6. A vehicle body damping cushion arrangement device, characterized in that the device comprises:
the finite element analysis module is used for carrying out finite element analysis on the target vehicle and acquiring a vehicle body load point set according to a finite element analysis result;
the excitation simulation module is used for performing real vehicle working excitation simulation on the target vehicle according to the vehicle body load point set and acquiring excitation response data corresponding to all vehicle body sheet metal areas of the target vehicle;
the cloud image generation module is used for generating a vibration energy cloud image with the target vehicle according to the excitation response data;
the damping pad arrangement module is used for arranging the damping pads of the vehicle body according to the vibration energy cloud picture;
the finite element analysis module is further used for carrying out finite element analysis on the target vehicle, acquiring the load born by the target vehicle in actual running according to a finite element analysis result, taking the points subjected to the load as discrete points, and summarizing all the discrete points to generate a vehicle body load point set;
the finite element analysis module is further used for carrying out finite element analysis on the target vehicle, acquiring load position information of the load born by the target vehicle in actual running according to a finite element analysis result, taking points corresponding to each load position as vehicle body load points, and generating a vehicle body load point set according to the vehicle body load points;
the finite element analysis module is further used for setting regular grids on a body model of a target vehicle in advance, analyzing the stress condition of each grid in actual running of the target vehicle, obtaining stress points of loads, taking the positions of the stress points as load positions, taking the stress points as body load points, and summarizing all the body load points to generate a body load point set;
the damping pad arrangement module is further used for acquiring a vibration energy level interval according to the vehicle safety vibration energy and acquiring a preset level color set corresponding to the vibration energy level interval;
the damping pad arrangement module is further configured to obtain a target grade color corresponding to the preset grade color set, and take a region coated with the target grade color in the vibration energy cloud chart as a damping pad arrangement region; and arranging the damping cushion of the vehicle body according to the damping cushion arrangement area.
7. An electronic device, the electronic device comprising: a memory, a processor, and a body damping cushion arrangement program stored on the memory and executable on the processor, the body damping cushion arrangement program configured to implement the steps of the body damping cushion arrangement method of any one of claims 1 to 5.
8. A storage medium having stored thereon a vehicle body damping cushion arrangement program which, when executed by a processor, implements the steps of the vehicle body damping cushion arrangement method of any one of claims 1 to 5.
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