High-speed running wind noise analysis method

Abstract

The application discloses a high-speed running wind noise analysis method, which comprises the following steps: testing the static indentation of a door and a door hole sealing strip in a laboratory environment; if the static indentation of the sealing strip meets the static indentation test standard, carrying out a road test of high-speed running; testing the dynamic indentation of the sealing strip, and identifying the wind noise position of the sealing strip which has a wind noise contribution value to the wind noise in the vehicle according to the dynamic indentation of the sealing strip; detecting the wind noise position, analyzing the influencing factors of the wind noise contribution value, obtaining the analysis result of high-speed running wind noise, and judging the reason of the increase of high-speed running wind noise according to the analysis result; the sealing state of the door is detected by using the dynamic indentation equipment of the sealing strip, the influence of dynamic sealing on wind noise is tested by correcting the dynamic sealing failure position, the dynamic sealing failure position can be accurately identified, the specific reason of the significant increase of high-speed wind noise can be identified, the door sealing design and process optimization are assisted, and the problem of high-speed running wind noise is solved.

Description

Technical Field

[0001] This invention relates to the field of vehicle sealing testing technology, and in particular to a method for analyzing wind noise during high-speed driving. Background Technology

[0002] During vehicle development, most automakers use wind noise levels at 120 km / h as a benchmark for wind noise performance. However, with changes in traffic regulations, vehicle speeds can be higher, leading to stricter requirements for wind noise. The extreme operating condition considered during development is 160 km / h. As speed increases, in-vehicle wind noise continuously increases. While most vehicles show little difference in in-vehicle wind noise at 120 km / h, some models exhibit a significant increase in wind noise at 160 km / h, though the specific cause is difficult to pinpoint.

[0003] When a vehicle is traveling at high speed, according to Bernoulli's principle, the pressure inside the vehicle is greater than the pressure outside, causing the doors to open outwards. Window frames with lower structural strength may experience significant deformation, potentially leading to seal failure of the door weatherstripping, resulting in gaps and draft noise. Currently, there is limited research in the industry on high-speed wind noise control technology and leak location identification, and a complete analytical methodology is lacking. Summary of the Invention

[0004] The purpose of this invention is to provide a method for analyzing wind noise during high-speed driving, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for analyzing wind noise during high-speed driving, comprising:

[0006] The test standards are set, and the vehicle under test is parked in the test laboratory environment to test the static indentation of the door sealing strip and the door opening sealing strip. The test standards include the static indentation test standards.

[0007] If the static indentation of the sealing strip of the vehicle under test meets the static indentation test standard, then the vehicle under test will be subjected to a high-speed road test. The wind noise contribution value of the static indentation of the sealing strip that meets the static indentation test standard in the high-speed road test will not affect the high-speed wind noise analysis results.

[0008] The test speed is preset, the dynamic indentation of the sealing strip is tested, and the location of wind noise that contributes to the wind noise in the vehicle is identified based on the dynamic indentation of the sealing strip.

[0009] The location of wind noise is detected, and the influencing factors that contribute to the wind noise value are analyzed to obtain the analysis results of wind noise at high speed. Based on the analysis results, the cause of the increase in wind noise at high speed is determined.

[0010] Furthermore, the static indentation of the door seals and door opening seals is tested by parking the vehicle under test in a laboratory environment, which also includes:

[0011] Based on the gap control position, the door sealing strip and the door opening sealing strip are segmented respectively;

[0012] Test the static indentation of each sealing strip segment, and record the static test contact width and static test compression force of the sealing strip;

[0013] The static test contact width is compared with the static standard contact width, and the static test compression force is compared with the static standard compression force to confirm the sealing status of the sealing strip. The static indentation test standard includes the static standard contact width and the static standard compression force.

[0014] Determine the sealing problem of the sealing strip based on its sealing condition.

[0015] Furthermore, testing the static indentation of each sealing strip segment also includes:

[0016] If the sealing strip does not meet the static indentation test standard by testing the static indentation of each sealing strip segment, then test the static test gap between the vehicle body and the door at the corresponding sealing strip segment.

[0017] The test standard also includes a static standard inner gap. The static standard inner gap, static standard contact width, and static standard compressive force are compared with the corresponding static test inner gap, static test contact width, and static test compressive force to obtain the corresponding static test difference values. The static test difference values ​​include the static inner gap difference value, the static contact width difference value, and the static compressive force difference value.

[0018] Set the correlation weight between static test difference values ​​and sealing defects, where sealing defects include sheet metal size defects, process assembly defects, and sealing strip component defects;

[0019] The factors influencing the static indentation of the sealing strip are determined based on the relevant weights, as well as the proportion of static test differences among each influencing factor.

[0020] Furthermore, the sealing defects were corrected so that their contribution to wind noise would not affect the wind noise analysis results at high speeds, thus meeting the static indentation test standards.

[0021] Furthermore, the static indentation of the door seals and door opening seals is tested by parking the vehicle under test in a laboratory environment, which also includes:

[0022] CT scans were used to examine the cross-sectional structure of the sealing strip, identify manufacturing defects, and correct these defects so that their contribution to wind noise did not affect the wind noise analysis results at high speeds.

[0023] Furthermore, the test involves setting a test speed, testing the dynamic indentation of the sealing strip, and identifying the wind noise locations where the sealing strip contributes to the wind noise inside the vehicle based on the dynamic indentation. This also includes:

[0024] Analyze the dynamic indentation results of the door sealing strips and door opening sealing strips at the same positions in each segment of the sealing strip, and record the dynamic measured contact width and dynamic measured compression force of the sealing strips;

[0025] The dynamic sealing status of the sealing strip is confirmed by comparing the dynamic measured contact width and dynamic measured compressive force with the dynamic indentation test standard. The test standard also includes the dynamic indentation test standard, which includes the dynamic standard contact width and dynamic standard compressive force.

[0026] The wind noise contribution value of the sealing strip location is determined based on the sealing condition.

[0027] Furthermore, determining the wind noise contribution value of the sealing strip's wind noise location based on the sealing condition also includes:

[0028] When conducting high-speed road tests on the vehicle under test, the outward deformation of the vehicle door is collected, and the maximum deformation location is determined. The maximum deformation location is the sealing strip wind noise location with the largest wind noise contribution value.

[0029] Collect the dynamic indentation between the door seal and the body door frame seal at the location of maximum deformation;

[0030] The test standard also includes dynamic standard inner gap. The dynamic standard inner gap, dynamic standard contact width and dynamic standard compression force are compared with the corresponding dynamic test inner gap, dynamic test contact width and dynamic test compression force to obtain the corresponding dynamic test difference value. The dynamic test difference value includes dynamic inner gap difference value, dynamic contact width difference value and dynamic compression force difference value. The dynamic test inner gap is the amount of outward deformation of the door.

[0031] Set the correlation weight between dynamic test difference values ​​and sealing defects, where sealing defects include sheet metal size defects, process assembly defects, and sealing strip component defects;

[0032] The factors influencing the dynamic indentation of the sealing strip are determined based on the relevant weights, as well as the proportion of dynamic test differences among each influencing factor.

[0033] Furthermore, based on relevant weights, the factors influencing the dynamic indentation of the sealing strip due to sealing defects, and the proportion of dynamic test differences among each influencing factor, also include:

[0034] The location of maximum deformation is corrected based on the influencing factors and the proportion of dynamic test differences among each influencing factor to ensure it meets the test standards.

[0035] Test the changes in wind noise at high speeds before and after the correction, and determine the contribution of the location of maximum deformation to wind noise at high speeds.

[0036] Furthermore, the location of wind noise is detected, and the influencing factors contributing to its contribution value are analyzed to obtain the analysis results of wind noise at high speeds. Based on the analysis results, the reasons for the increase in wind noise at high speeds are determined, including:

[0037] Check the installation status of the sealing strip, test the CLD characteristics of the door sealing strip and door opening sealing strip at the location of dynamic sealing failure, identify the CLD characteristics of the sealing strip, and determine the defects in the sealing strip manufacturing process.

[0038] Furthermore, the location of wind noise is detected, and the influencing factors contributing to its contribution value are analyzed to obtain the analysis results of wind noise at high speeds. Based on the analysis results, the reasons for the increase in wind noise at high speeds are determined, including:

[0039] Based on the free modal analysis of the car door, the lateral stiffness characteristics of the door window frame are used to identify sheet metal welding defects.

[0040] Compared with the prior art, the beneficial effects of the present invention are: it can use a three-dimensional dynamic deformation device to test the maximum position and displacement of the outward deformation of the car door, use a dynamic indentation device for the sealing strip to detect the sealing state at the maximum outward deformation, correct the position of dynamic seal deterioration, and accurately test the impact of dynamic seal on wind noise; the present invention is simple to operate, can accurately identify the location of dynamic seal failure at high speed, and can identify the specific reasons for the significant increase in wind noise at high speed, assisting in the design and process optimization of car door sealing, and solving the problem of high wind noise at high speed. Attached Figure Description

[0041] Figure 1 This is a flowchart of the high-speed wind noise analysis method in an embodiment of the present invention. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] Please refer to the accompanying drawings in the specification. This invention provides a technical solution: a method for analyzing wind noise during high-speed driving, comprising the following steps:

[0046] S102. Set test standards and test the static indentation of the door sealing strip and the door opening sealing strip in the test laboratory environment. The test standards include the static indentation test standard.

[0047] The purpose of testing the static indentation of the sealing strip is to ensure that the contribution of the static indentation of the sealing strip to wind noise during high-speed road testing of the vehicle under test does not affect the high-speed wind noise analysis results. The vehicle is parked in a laboratory environment, and the static indentation of the sealing strip is tested using a sealing strip pressure distribution testing system to ensure that the static sealing condition of the entire vehicle is good. The sealing strip pressure distribution testing system can reflect the compression state of the sealing strip. If the sealing strip fails, the sealing strip indentation will be interrupted in the test results. The test standard of this invention is preferably the vehicle design standard.

[0048] Specifically, based on the gap control position, the door sealing strip and the door opening sealing strip are segmented; the static indentation of each sealing strip segment is tested, and the static test contact width and static test compression force of the sealing strip are recorded; the static test contact width is compared with the static standard contact width, and the static test compression force is compared with the static standard compression force to confirm the sealing status of the sealing strip. The static indentation test standard includes the static standard contact width and the static standard compression force; the sealing problem of the sealing strip is judged based on the sealing status.

[0049] The process involves segmenting the door seals according to the control position of the gap between the door and the vehicle body. A pressure distribution test sensor is placed on the first segment of the door seal. The door is gently closed to the locked position, and the static indentation of the first segment of the door seal is tested. The contact width and compression force of the seal are recorded until all door seals have undergone static indentation testing, thus obtaining the static deformation of the door. The measured contact width and compression force of the door seals are compared with the static indentation test standard to confirm the sealing status of each part of the door seal. Similarly, the door opening seals are segmented according to the control position of the gap between the door and the vehicle body. A pressure distribution test sensor is placed on the first segment of the door opening seal. The door is gently closed to the locked position, and the static indentation of the first segment of the door opening seal is tested. The contact width and compression force of the seal are recorded until all door opening seals have undergone static indentation testing, thus obtaining the static deformation of the door opening. The measured contact width and compression force of the door opening seals are compared with the design state to confirm the sealing status of each part of the door opening seal.

[0050] Optionally, if the sealing strip does not meet the static indentation test standard by testing the static indentation of each sealing strip segment, then the static test inner gap between the vehicle body and the door at the corresponding sealing strip segment is tested. The test standard also includes the static standard inner gap. The static standard inner gap, static standard contact width, and static standard compression force are compared with the corresponding static test inner gap, static test contact width, and static test compression force to obtain the corresponding static test difference values. The static test difference values ​​include the static inner gap difference value, the static contact width difference value, and the static compression force difference value. The relevant weights of the static test difference values ​​and sealing defects are set. The sealing defects include sheet metal size defects, process assembly defects, and sealing strip manufacturing defects. The influencing factors of sealing defects on the static indentation of the sealing strip and the proportion of the static test difference value in each influencing factor are determined according to the relevant weights.

[0051] The different static test difference values ​​are caused by one or more of the different sealing defects. The degree of influence of each sealing defect on the static test difference value is different. By analyzing the influence relationship and degree of influence of the sealing defects on the static test difference value, different weights are set for different sealing defects to determine which sealing defect caused the static test difference and to judge the degree of the sealing defect based on the static test difference.

[0052] Optionally, the sealing defects can be corrected so that their contribution to wind noise does not affect the wind noise analysis results at high speeds, thus meeting the static indentation test standards.

[0053] Among them, there are corresponding correction methods for different sealing defects. For example, if the gap in the static test is greater than the gap in the static standard, it is determined that the gap between the sealing strip and the car door or door opening is too large, and the gap can be eliminated by filling the gap with sealant.

[0054] S104. If the static indentation of the sealing strip of the vehicle under test meets the static indentation test standard, then the vehicle under test shall be subjected to a high-speed road test. The wind noise contribution value of the static indentation of the sealing strip that meets the static indentation test standard in the high-speed road test shall not affect the high-speed wind noise analysis results.

[0055] S106. Preset the test speed, test the dynamic indentation of the sealing strip, and identify the location of wind noise that contributes to the wind noise in the vehicle based on the dynamic indentation of the sealing strip.

[0056] In the road test, the door sealing strips and door opening sealing strips at the same position on the door and window frames are divided into segments. Preferably, at a vehicle speed of 160 km / h, the dynamic indentation of the first segment of the door sealing strip and the wind noise level inside the vehicle are tested until the dynamic indentation test of all door sealing strips is completed. At a vehicle speed of 160 km / h, the dynamic indentation of the first segment of the door opening sealing strip is tested until the dynamic indentation test of all door opening sealing strips is completed. The dynamic indentation results of the door sealing strips and door opening sealing strips at the same position of each sealing strip segment are analyzed, and the dynamic measured contact width and dynamic measured compression force of the sealing strip are recorded.

[0057] The dynamic sealing status of the sealing strip is confirmed by comparing the dynamic measured contact width and dynamic measured compressive force with the dynamic indentation test standard. The test standard also includes the dynamic indentation test standard, which includes the dynamic standard contact width and dynamic standard compressive force.

[0058] The wind noise contribution value of the sealing strip location is determined based on the sealing condition.

[0059] Optionally, determining the wind noise contribution value of the sealing strip's wind noise location based on the sealing status also includes:

[0060] When conducting high-speed road tests on the vehicle under test, the outward deformation of the vehicle door is collected, and the maximum deformation location is determined. The maximum deformation location is the sealing strip wind noise location with the largest wind noise contribution value.

[0061] Collect the dynamic indentation between the door seal and the body door frame seal at the location of maximum deformation;

[0062] The test standard also includes dynamic standard inner gap. The dynamic standard inner gap, dynamic standard contact width and dynamic standard compression force are compared with the corresponding dynamic test inner gap, dynamic test contact width and dynamic test compression force to obtain the corresponding dynamic test difference value. The dynamic test difference value includes dynamic inner gap difference value, dynamic contact width difference value and dynamic compression force difference value. The dynamic test inner gap is the amount of outward deformation of the door.

[0063] Set the correlation weight between dynamic test difference values ​​and sealing defects, where sealing defects include sheet metal size defects, process assembly defects, and sealing strip component defects;

[0064] The factors influencing the dynamic indentation of the sealing strip are determined based on the relevant weights, as well as the proportion of dynamic test differences among each influencing factor.

[0065] The three-dimensional dynamic deformation sensor is installed on the driver's side door and body. Testing begins with the door's outward deformation, measuring the deformation at each location on the door frame. The location with the maximum outward deformation is then identified. Based on this location, a sealing strip pressure distribution sensor is clamped onto the door sealing strip between the door and the body. The sensor measures the dynamic indentation of the sealing strip, measuring the electrical signal of the sealing strip pressure distribution in real time during door movement. This electrical signal is then converted into pressure distribution data by a data processor. Preferably, the pressure sensor is a thin-film sensor with a thickness of 0.1 mm.

[0066] Optionally, determining the influencing factors of sealing defects on the dynamic indentation of the sealing strip based on relevant weights, and the proportion of dynamic test differences among each influencing factor, also includes:

[0067] The location of maximum deformation is corrected based on the influencing factors and the proportion of dynamic test differences among each influencing factor to ensure it meets the test standards.

[0068] Test the changes in wind noise at high speeds before and after the correction, and determine the contribution of the location of maximum deformation to wind noise at high speeds.

[0069] In one preferred method, Vaseline is applied to the surface of the door sealing strip at the location where the sealing effect of the door sealing strip has deteriorated. The thickness of the application is determined according to the amount of outward deformation of the door. Tape can also be pasted at the corresponding gaps to prevent wind from blowing in through the gaps when driving at high speed.

[0070] S108. Detect the location of wind noise, analyze the influencing factors that contribute to the wind noise value, obtain the analysis results of wind noise at high speed, and determine the cause of the increase in wind noise at high speed based on the analysis results.

[0071] In the above embodiments, a three-dimensional dynamic deformation device is used to test the maximum position and displacement of the outward deformation of the car door, and a dynamic indentation device for the sealing strip is used to detect the sealing state at the point of maximum outward deformation, correct the position of dynamic seal deterioration, and accurately test the impact of dynamic seal on wind noise. The present invention is simple to operate, can accurately identify the location of dynamic seal failure at high speed, and can identify the specific reasons for the significant increase in wind noise at high speed, assisting in the design and process optimization of car door sealing, and solving the problem of high wind noise at high speed.

[0072] Optionally, testing the static indentation of the door seals and door opening seals by parking the vehicle under test in a laboratory environment also includes:

[0073] CT scans were used to examine the cross-sectional structure of the sealing strip, identify manufacturing defects, and correct these defects so that their contribution to wind noise did not affect the wind noise analysis results at high speeds.

[0074] Optionally, the location of wind noise is detected, and the influencing factors contributing to its contribution value are analyzed to obtain the analysis results of wind noise at high speeds. Based on the analysis results, the cause of increased wind noise at high speeds is determined, which also includes:

[0075] Check the installation status of the sealing strip, test the CLD characteristics of the door sealing strip and door opening sealing strip at the location of dynamic sealing failure, identify the CLD characteristics of the sealing strip, and determine the defects in the sealing strip manufacturing process.

[0076] Among them, the sealing strip CLD (Compression Load Deflection) is the compression load of the sealing strip itself, which is the force provided by the sealing strip itself per 100mm under the designed compression gap state.

[0077] Optionally, the location of wind noise is detected, and the influencing factors contributing to its contribution value are analyzed to obtain the analysis results of wind noise at high speeds. Based on the analysis results, the cause of increased wind noise at high speeds is determined, which also includes:

[0078] Based on the free modal analysis of the car door, the lateral stiffness characteristics of the door window frame are used to identify sheet metal welding defects.

[0079] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for analyzing wind noise during high-speed driving, characterized in that, include: The test standards are set, and the vehicle under test is parked in the test laboratory environment to test the static indentation of the door sealing strip and the door opening sealing strip. The test standards include the static indentation test standards. If the static indentation of the sealing strip of the vehicle under test meets the static indentation test standard, then the vehicle under test will be subjected to a high-speed road test. The wind noise contribution value of the static indentation of the sealing strip that meets the static indentation test standard in the high-speed road test will not affect the high-speed wind noise analysis results. The test speed is preset, the dynamic indentation of the sealing strip is tested, and the location of wind noise that contributes to the wind noise in the vehicle is identified based on the dynamic indentation of the sealing strip. The location of wind noise is detected, and the influencing factors that contribute to the wind noise value are analyzed to obtain the analysis results of wind noise at high speed. Based on the analysis results, the cause of the increase in wind noise at high speed is determined. If the sealing strip does not meet the static indentation test standard by testing the static indentation of each sealing strip segment, then test the static test gap between the vehicle body and the door at the corresponding sealing strip segment. The test standards include static standard inner gap, static standard contact width, and static standard compressive force. The static standard inner gap, static standard contact width, and static standard compressive force are compared with the corresponding static test inner gap, static test contact width, and static test compressive force to obtain the corresponding static test difference values. Among them, the static test difference values ​​include static inner gap difference values, static contact width difference values, and static compressive force difference values. Set the correlation weight between static test difference values ​​and sealing defects, where sealing defects include sheet metal size defects, process assembly defects, and sealing strip component defects; The factors influencing the static indentation of the sealing strip are determined based on the relevant weights, as well as the proportion of static test differences among each influencing factor.

2. The method for analyzing wind noise during high-speed driving according to claim 1, characterized in that, The test involves placing the vehicle under test in a laboratory environment to test the static indentation of the door seals and door opening seals, and also includes: Based on the gap control position, the door sealing strip and the door opening sealing strip are segmented respectively; Test the static indentation of each sealing strip segment, and record the static test contact width and static test compression force of the sealing strip; The static test contact width is compared with the static standard contact width, and the static test compression force is compared with the static standard compression force to confirm the sealing status of the sealing strip. The static indentation test standard includes the static standard contact width and the static standard compression force. Determine the sealing problem of the sealing strip based on its sealing condition.

3. The method for analyzing wind noise during high-speed driving according to claim 1, characterized in that, The sealing defects were corrected so that their contribution to wind noise would not affect the wind noise analysis results at high speeds, thus meeting the static indentation test standards.

4. The method for analyzing wind noise during high-speed driving according to claim 1, characterized in that, The test involves placing the vehicle under test in a laboratory environment to test the static indentation of the door seals and door opening seals, and also includes: CT scans were used to examine the cross-sectional structure of the sealing strip, identify manufacturing defects, and correct these defects so that their contribution to wind noise did not affect the wind noise analysis results at high speeds.

5. The method for analyzing wind noise during high-speed driving according to claim 2, characterized in that, The test involves setting a preset test speed, measuring the dynamic indentation of the sealing strip, and identifying the locations where the sealing strip contributes to wind noise levels inside the vehicle based on these indentations. The test also includes: Analyze the dynamic indentation results of the door sealing strips and door opening sealing strips at the same positions in each segment of the sealing strip, and record the dynamic measured contact width and dynamic measured compression force of the sealing strips; The dynamic sealing status of the sealing strip is confirmed by comparing the dynamic measured contact width and dynamic measured compressive force with the dynamic indentation test standard. The test standard also includes the dynamic indentation test standard, which includes the dynamic standard contact width and dynamic standard compressive force. The wind noise contribution value of the sealing strip location is determined based on the sealing condition.

6. The method for analyzing wind noise during high-speed driving according to claim 5, characterized in that, The wind noise contribution value of the sealing strip location, determined based on the sealing condition, also includes: When conducting high-speed road tests on the vehicle under test, the outward deformation of the vehicle door is collected, and the maximum deformation location is determined. The maximum deformation location is the sealing strip wind noise location with the largest wind noise contribution value. Collect the dynamic indentation between the door seal and the body door frame seal at the location of maximum deformation; The test standard also includes dynamic standard inner gap. The dynamic standard inner gap, dynamic standard contact width and dynamic standard compression force are compared with the corresponding dynamic test inner gap, dynamic test contact width and dynamic test compression force to obtain the corresponding dynamic test difference value. The dynamic test difference value includes dynamic inner gap difference value, dynamic contact width difference value and dynamic compression force difference value. The dynamic test inner gap is the amount of outward deformation of the door. Set the correlation weight between dynamic test difference values ​​and sealing defects, where sealing defects include sheet metal size defects, process assembly defects, and sealing strip component defects; The factors influencing the dynamic indentation of the sealing strip are determined based on the relevant weights, as well as the proportion of dynamic test differences among each influencing factor.

7. The method for analyzing wind noise during high-speed driving according to claim 6, characterized in that, The factors influencing the dynamic indentation of the sealing strip based on relevant weights, and the proportion of dynamic test differences among each influencing factor, also include: The location of maximum deformation is corrected based on the influencing factors and the proportion of dynamic test differences among each influencing factor to ensure it meets the test standards. Test the changes in wind noise at high speeds before and after the correction, and determine the contribution of the location of maximum deformation to wind noise at high speeds.

8. The method for analyzing wind noise during high-speed driving according to claim 1, characterized in that, The location of wind noise is detected, and the influencing factors contributing to its contribution value are analyzed to obtain the analysis results of wind noise at high speeds. Based on the analysis results, the causes of increased wind noise at high speeds are determined, including: Check the installation status of the sealing strip, test the CLD characteristics of the door sealing strip and door opening sealing strip at the location of dynamic sealing failure, identify the CLD characteristics of the sealing strip, and determine the defects in the sealing strip manufacturing process.

9. The method for analyzing wind noise during high-speed driving according to claim 1, characterized in that, The location of wind noise is detected, and the influencing factors contributing to its contribution value are analyzed to obtain the analysis results of wind noise at high speeds. Based on the analysis results, the causes of increased wind noise at high speeds are determined, including: Based on the free modal analysis of the car door, the lateral stiffness characteristics of the door window frame are used to identify sheet metal welding defects.

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