Shot peening forming speed design method and device for continuously variable thickness and curvature skin

Abstract

The present invention provides a shot peening forming speed design method and device for a continuously variable thickness and variable curvature skin. The method obtains the chord-wise section inertia moment and span-wise section inertia moment, and chord-wise curvature radius of each micro-region; calculates the target curvature radius of a target test area to obtain a chord-wise reference shot peening speed and a span-wise reference shot peening speed; for each micro-region, the chord-wise shot peening forming speed is determined based on the span-wise section inertia moment and chord-wise curvature radius of the micro-region, the span-wise section inertia moment and chord-wise curvature radius of the target test area, and the chord-wise reference shot peening speed; the span-wise shot peening forming speed is determined based on the chord-wise section inertia moment and chord-wise curvature radius of the micro-region, the chord-wise section inertia moment and chord-wise curvature radius of the target test area, and the span-wise reference shot peening speed; finally, the shot peening forming speed of each micro-region is obtained; and by infinitely subdividing the micro-regions, the precise speed of shot peening on a variable thickness and variable curvature part is calculated, thereby infinitely approximating the theoretical curvature shape of the skin.

Description

Technical Field

[0001] The present invention belongs to the technical field of shot peening of skin parts, and in particular relates to a shot peening speed design method and device for skin with continuously variable thickness and curvature. Background Art

[0002] The basic principle of shot peening is to use high-speed metal projectiles to hit the surface of the part, causing a residual stress layer to form on the metal surface. The surface material extends around the crater. After the strength exceeds the elastic limit, the surface area undergoes plastic deformation, which manifests itself macroscopically as the part bulging toward the sprayed surface and producing bending deformation.

[0003] For skin parts, the area with a continuous thickness variation exceeding 3mm / 1m and a continuous curvature radius variation exceeding 6000mm / 1m is defined as a continuously variable thickness and curvature region. Using the traditional method of designing the chord-wise shot peening velocity in a constant thickness zone, the formed curvature of the skin poorly matches the theoretical shape. This is because the differences in elastic deformation caused by the continuous variation in skin thickness are ignored. Summary of the Invention

[0004] To address the technical problem in related technologies where the chord-wise shot peening parameter design method for uniform thickness zones results in poor conformity between the skin's curvature and theoretical shape, the present invention provides a shot peening speed design method and device for skin with continuously variable thickness and curvature. The method uses the test piece's shot peening speed as a baseline, and calculates the shot peening speed corresponding to the target curvature based on the relationship between the moment of inertia and curvature radius of each micro-zone. The technical solution is as follows:

[0005] In a first aspect, a method for designing shot peening speed of a continuously variable thickness and variable curvature skin is provided, the method comprising:

[0006] Step 1: Refine the shot peening area into multiple micro-areas based on thickness;

[0007] Step 2: Obtain the chord-wise moment of inertia and span-wise moment of inertia of each micro-region, as well as the chord-wise radius of curvature;

[0008] Step 3: Select the thinnest micro-area as the target test area, calculate the target curvature radius of the micro-area, use the corresponding shot peening speed as the reference shot peening speed v0, and decompose the reference shot peening speed v0 along the chord direction and span direction to obtain the chord direction reference shot peening speed v0. 0y and spanwise reference shot peening speed v 0x ;

[0009] Step 4: For each micro-area, based on the spanwise moment of inertia and chordwise curvature radius of the micro-area, the spanwise moment of inertia and chordwise curvature radius of the target test area, and the chordwise reference shot peening velocity v obtained by decomposing the reference shot peening velocity v0, 0y, determine the chordal shot peening speed v iy Based on the chordal section inertia moment and chordal curvature radius of the micro-area, the chordal section inertia moment and chordal curvature radius of the target test area, and the spanwise reference shot peening speed v obtained by decomposing the reference shot peening speed v0 0x , determine the spanwise shot peening speed v ix ;

[0010] Step 5: Change the chordal shot peening speed v iy and spanwise reference shot peening speed v 0x The shot peening speed v of each micro-area is obtained by synthesis. i , where i is the micro-area number.

[0011] Furthermore, the method further comprises:

[0012] Step 6: Keep the processing parameters except the shot peening speed consistent with the test piece parameters, and shot peen the skin parts according to the shot peening forming speed corresponding to each micro-area to obtain the required target forming curvature radius.

[0013] Optionally, the processing parameters are shot peening pressure, flow rate, and shot peening distance.

[0014] Optionally, in step 4, the chordal shot peening speed v is determined iy Specifically include:

[0015] Calculate the spanwise section moment of inertia I of the target test area e0x The chordal curvature radius R of micro-region i i The product of I e0x R i ,

[0016] Calculate the spanwise section inertia I of micro-region i eix The product of the chordal curvature radius R0 of the target test area I eix R0,

[0017] Calculate v iy =(I e0x R i / I eix R0)*v 0y .

[0018] Optionally, in step 4, the spanwise shot peening speed v is determined ix Specifically include:

[0019] Calculate the chord-direction section inertia I of the target test area e0y The chordal curvature radius R of micro-region i i The product of I e0y R i ,

[0020] Calculate the chord-direction section inertia I of microregion i eiy The product of the chordal curvature radius R0 of the target test area I ei R0,

[0021] Calculate v ix =(I e0y R i / I eiy R0)*v 0x .

[0022] In a second aspect, a device for designing shot peening speed for a continuously variable thickness and variable curvature skin is provided, for executing any of the methods described in the first aspect, the device comprising:

[0023] A partitioning module for subdividing the shot peening area into multiple micro-zones based on thickness;

[0024] An acquisition module is used to obtain the chord-wise section inertia moment and span-wise section inertia moment of each micro-region, as well as the chord-wise curvature radius;

[0025] The calculation module is used to select the thinnest micro-area as the target test area, calculate the target curvature radius of the micro-area, use the corresponding shot peening speed as the reference shot peening speed v0, and decompose the reference shot peening speed v0 along the chord direction and span direction to obtain the chord direction reference shot peening speed v 0y and spanwise reference shot peening speed v 0x ;

[0026] A determination module is used for determining, for each micro-area, the chord-wise curvature radius and the span-wise sectional inertia moment of the micro-area, the chord-wise curvature radius and the span-wise sectional inertia moment of the target test area, and the chord-wise reference shot peening velocity v obtained by decomposing the reference shot peening velocity v0. 0y , determine the chordal shot peening speed v iy Based on the chordal section inertia moment and chordal curvature radius of the micro-area, the chordal section inertia moment and chordal curvature radius of the target test area, and the spanwise reference shot peening speed v obtained by decomposing the reference shot peening speed v0 0x , determine the spanwise shot peening speed v ix ;

[0027] Synthesis module for converting the chordal shot peening velocity v iy and spanwise reference shot peening speed v 0x The shot peening speed v of each micro-area is obtained by synthesis. i , where i is the micro-area number.

[0028] Optionally, a module is determined, specifically for:

[0029] Calculate the spanwise section moment of inertia I of the target test area e0xThe chordal curvature radius R of micro-region i i The product of I e0x R i ,

[0030] Calculate the spanwise section inertia I of micro-region i eix The product of the chordal curvature radius R0 of the target test area I eix R0,

[0031] Calculate v iy =(I e0x R i / I eix R0)*v 0y .

[0032] Optionally, the determination module is further specifically configured to:

[0033] Calculate the chord-direction section inertia I of the target test area e0y The chordal curvature radius R of micro-region i i The product of I e0y R i ,

[0034] Calculate the chord-direction section inertia I of microregion i eiy The product of the chordal curvature radius R0 of the target test area I ei R0,

[0035] Calculate v ix =(I e0y R i / I eiy R0)*v 0x .

[0036] In a third aspect, a shot peening forming speed design device for a skin with continuously variable thickness and curvature is provided, comprising a processor and a memory, wherein the processor is configured to execute instructions stored in the memory, and the processor implements any design method described in the first aspect by executing the instructions.

[0037] In a fourth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores instructions, and when the instructions are executed on a processing component of a computer, the processing component executes any design method described in the first aspect.

[0038] In a fifth aspect, a computer program product comprising instructions is provided, which, when run on a computer, enables the computer to execute any design method described in the first aspect.

[0039] The beneficial effects of the present invention are at least:

[0040] Compared to the traditional method of designing shot peening speed for uniform thickness areas, this method divides the part into micro-areas based on thickness differences. Based on the relationship between shot peening speed, cross-sectional moment of inertia, and curvature radius, the shot peening speed in each micro-area along the x-direction (spanwise) and y-direction (chordwise) is calculated. By infinitely subdividing the micro-areas, the precise shot peening speed can be calculated for parts with varying thickness and curvature, thereby infinitely approaching the theoretical curvature profile of the skin.

[0041] Compared with the traditional shot peening forming speed design method, the present invention can form the target curvature radius by only adjusting the shot peening speed and keeping other parameters unchanged. It has the characteristics of parameter controllability and strong feasibility.

[0042] Unlike the traditional shot peening speed design method that only considers a single direction, the present invention designs the shot peening speed based on the section inertia moment and curvature radius in both the chordal and span directions of the part, and then synthesizes the component velocities in each direction along the direction of maximum curvature to form the combined shot peening speed, thereby more accurately designing the shot peening speed that conforms to the skin curvature shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a flow chart of a shot peening forming speed design method for a continuously variable thickness and curvature skin according to the present invention;

[0044] Figure 2 Schematic diagram of micro-area division of the continuously variable thickness and variable curvature region of the present invention;

[0045] Figure 3 This is a schematic diagram of the calculation of the shot peening speed in the micro-area with continuously variable thickness and curvature in the present invention.

[0046] In the figure: 1-10 represent the boundaries of the part micro-area division; are the micro-areas after division; 11 represents the skin part; 12 represents the maximum curvature direction line of the part. DETAILED DESCRIPTION

[0047] The present invention is further described in detail below through specific implementation methods and drawings.

[0048] In the embodiments of the present invention, the relationship between the shot peening radius of curvature and thickness indicates that the radius of curvature is proportional to the square of the thickness. Therefore, even small changes in skin thickness can significantly affect the radius of curvature. For a skin part with continuously varying thickness and curvature, the shot peening area is subdivided into multiple micro-regions based on the thickness differences within that region. The shot peening velocity can then be designed through theoretical calculations.

[0049] In the embodiment of the present invention, in order to facilitate the design of shot peening speed, the rib direction (chord direction) of the skin part is recorded as the y direction, and the long stringer direction (span direction) of the skin part perpendicular thereto is recorded as the x direction.

[0050] In one embodiment of the present invention, a certain skin part is taken as an example, and the chordal curvature radius of the whole part varies in the range of 3.6 to 59 mm, and the thickness varies in the range of 4.5 to 15.8 mm. Figure 2 As shown in Figure 1, the thickness of the skin varies from 11.94 to 15.79 mm in the range of 1 to 4, and the chordal curvature radius varies from 4628.0 to 11210.7 mm, which is the continuous variable thickness and curvature area of ​​the part. A shot peening forming speed design method for continuously variable thickness and curvature skin can be found in [1]. Figure 1 The specific implementation process may include the following steps:

[0051] Step 1: For the continuously variable thickness and curvature region of the part, the following micro-region division principle is formulated based on the thickness difference: the boundary of the region is taken as the starting point a, corresponding to Figure 2 1, first measure the thickness along the span direction (long stringer direction) of the part, and mark the position where the thickness exceeds the starting point by 2mm as point b, corresponding to Figure 2 The area from 2 to 2 is recorded as the micro-area boundary, and this is done; then the thickness is measured along the chord direction (rib direction) of the part, and the method is the same as above, which will not be repeated here, and the complete micro-area boundary can be obtained, thereby refining the shot peening area into multiple micro-areas, such as Figure 2 shown.

[0052] Step 2: Measure the section inertia moment of each micro-area along the chord direction and span direction of the continuously variable thickness and curvature region, such as Figure 2 As shown in 1 to 4 and 5 to 10, the chord-wise section moment of inertia and span-wise section moment of inertia, as well as the chord-wise curvature radius of each micro-region of the skin parts are calculated with the help of three-dimensional analysis software.

[0053] Specifically, the three-dimensional analysis software can be used to project each microregion of the skin part onto a two-dimensional plane along the x-direction (span-wise) and the y-direction (chord-wise) to calculate the cross-sectional moment of inertia of each microregion. The calculated cross-sectional moment of inertia in the chord-wise direction is shown in Table 1, and the cross-sectional moment of inertia in the span-wise direction is shown in Table 2. The statistical chord-wise curvature radius is shown in Table 3.

[0054] Table 1 The chordal section inertia moment of each micro-region in the continuously variable thickness and curvature region (unit: mm 4 )

[0055] 1～2 2～3 3～4 10～9 35257.2251 48382.2833 11442.8619 9～8 30859.3618 49438.4630 21896.9048 8～7 27658.9544 48046.0140 21037.8053 7～6 30578.9767 37426.5654 21981.5033 6～5 34877.5029 45285.0049 25011.7831

[0056] Table 2 Spanwise section moment of inertia of each micro-region in the continuously variable thickness and curvature region (unit: mm 4 )

[0057]

[0058] Table 3 Chordal curvature radius of each micro-region in the continuously variable thickness and curvature region (unit: m)

[0059] 1～2 2～3 3～4 10～9 10.41 7.79 6.39 9～8 10.90 9.45 8.08 8～7 11.21 10.18 9.33 7～6 7.20 6.93 6.86 6～5 4.95 4.85 4.63

[0060] Step 3: Select the thinnest micro-area as the target test area, calculate the target curvature radius of the micro-area, use the corresponding shot peening speed as the reference shot peening speed v0, and decompose the reference shot peening speed v0 along the chord direction and span direction to obtain the chord direction reference shot peening speed v0. 0y and spanwise reference shot peening speed v 0x .

[0061] like Figure 2 The microregion shown Hypothetical microregion For a 2024HDT-T351 aluminum alloy sheet with a size of 400mm×150mm×14mm, first follow the formula Calculate the target chordal curvature radius R y =5m, target spanwise curvature radius R x =100m. Among them, b is the span of the curvature meter, h is the arc height value, and the arc height value can be measured by the curvature meter. Next, the shot peening path takes the direction of the maximum curvature of the skin part, and the shot peening speed is set to v0'. According to the relationship that "the shot peening speed is proportional to the forming curvature radius", when the forming curvature radius is smaller than the theoretical curvature radius, a higher speed is used for shot peening, and vice versa. By doing so, the shot peening speed corresponding to the target curvature radius can be obtained, and then the shot peening speed is used as the benchmark shot peening speed v0. Finally, the benchmark shot peening speed v0 is decomposed along the chord direction and the span direction to obtain v 0y =0.2m / min, v 0x =4.0m / min.

[0062] Step 4: For each micro-area, based on the spanwise moment of inertia and chordwise curvature radius of the micro-area, the spanwise moment of inertia and chordwise curvature radius of the target test area, and the chordwise reference shot peening velocity v obtained by decomposing the reference shot peening velocity v0, 0y , determine the chordal shot peening speed v iy Based on the chordal section inertia moment and chordal curvature radius of the micro-area, the chordal section inertia moment and chordal curvature radius of the target test area, and the spanwise reference shot peening speed v obtained by decomposing the reference shot peening speed v0 0x , determine the spanwise shot peening speed v ix ; Set the chordal shot peening speed v iy and spanwise reference shot peening speed v 0x The shot peening speed v of each micro-area is obtained by synthesis. i .

[0063] According to the "shot peening speed v and section inertia moment I e Inversely proportional to the curvature radius R of the shot peening, the relationship is established: Therefore, the cross-sectional inertia moment I of each micro-region is calculated. e0 R i and I ei The shot peening speed v of each micro-area can be calculated by multiplying the ratio of R0 by the reference shot peening speed v0. i i is the micro-area number, R0 represents the micro-area The chordal radius of curvature. e0 Represents micro-area The moment of inertia of the area.

[0064] First, according to the formula Calculate the chordal shot peening velocity v of micro-area i iy It should be noted that when calculating the tangential shot peening speed v iy When , the spanwise section inertia moment of micro-area i and the spanwise section inertia moment of micro-area 0 are substituted into the formula for calculation. That is, first calculate the spanwise section inertia moment I of the target test area e0x The chordal curvature radius R of micro-region i i The product of I e0x R i , and then calculate the spanwise section inertia moment I of micro-region i eix The product of the chordal curvature radius R0 of the target test area I eix R0, then calculate v iy =(I e0x R i / I eix R0)*v 0y .

[0065] Then, according to the formula Calculate the spanwise shot peening velocity v of micro-area i ix It should be noted that when calculating the spanwise shot peening speed v ix When , the chordal section inertia moment of micro-area i and the chordal section inertia moment of micro-area 0 are substituted into the formula for calculation. That is, the chordal section inertia moment I of the target test area is calculated first. e0y The chordal curvature radius R of micro-region i i The product of I e0y R i , and then calculate the chord-direction section inertia moment I of micro-region i eiy The product of the chordal curvature radius R0 of the target test area I ei R0, then calculate v ix =(I e0y R i / I eiy R0)*v0x .

[0066] Then, the chordal shot peening speed v of micro-area i is set to iy and spanwise shot peening speed v ix The shot peening speed v of micro-area i is obtained by synthesis. i .

[0067] Assume that the angle between the shot peening velocity direction and the span direction of the part is θ, such as Figure 3 As shown, then v ix =v i ×cosθ,v iy =v i × sinθ. The shot peening speed is taken as 12 in the direction of the maximum curvature of the part. In this embodiment, the angle θ between the maximum curvature direction and the span direction of the part is 2-4°, then v ix =v i ×cosθ≈v i The cross-sectional inertia moments of each micro-region along the span are similar, so the v of each micro-region is iy The values ​​are similar and can be regarded as the reference speed v 0y .

[0068] by Figure 2 Take the micro-area ③ shown in the figure as an example for calculation.

[0069]

[0070] by Figure 2 Take the micro-area ⑦ shown in the figure as an example for calculation.

[0071]

[0072] by Figure 2 The microregion shown For example,

[0073]

[0074] The calculation process of the remaining micro-areas is the same as above and will not be repeated here. The shot peening forming speed of each micro-area can be obtained by calculation, see Table 4.

[0075] Table 4 Shot peening speed of each micro-area in the continuously variable thickness and curvature region (unit: m / min)

[0076] 10～9 9～8 8～7 7～6 6～5 1～2 8.3 9.9 11.4 6.6 4.0 2～3 4.5 5.4 5.9 5.2 3.0 3～4 15.7 10.4 12.5 8.8 5.2

[0077] In another embodiment, the present invention provides a method for designing the shot peening forming speed of a skin with continuously variable thickness and curvature, which, in addition to steps 1 to 4 in the above embodiment, may also include: step 5, keeping the processing parameters other than the shot peening speed, such as shot peening pressure, flow rate, shot peening distance, etc. consistent with the test piece parameters, and shot peening the skin parts according to the shot peening forming speed corresponding to each micro-area to obtain the required target forming curvature radius.

[0078] In this embodiment, the shot peening forming speed calculated above is used to process the continuously variable thickness and curvature area of ​​the skin part, and the gap between the shape and the template is detected on the frame template (the theoretical gap value between the skin part shape and the template is 0). Specific data are shown in Table 5.

[0079] Table 5 Clearance values ​​of contour patch panels in continuously variable thickness and curvature areas (unit: mm)

[0080] 10～9 9～8 8～7 7～6 6～5 1～2 0.4 0.2 0.3 0.3 0.4 2～3 0.5 0.3 0.4 0.4 0.5 3～4 0.5 0.2 0.3 0.4 0.5

[0081] In actual production, the proposed method for precisely designing the shot peening speed for continuously variable thickness and curvature skins can be used to divide the continuously variable thickness and curvature region into multiple micro-zones based on thickness differences. The shot peening speed for each micro-zone is then calculated, resulting in a skin part with a conforming curvature profile. The significant significance of this invention lies in the ability to calculate the precise shot peening speed for parts with variable thickness and curvature by infinitely subdividing the micro-zones, thereby infinitely approximating the theoretical curvature profile of the skin part.

[0082] An embodiment of the present invention further provides a device for designing shot peening speed of a continuously variable thickness and variable curvature skin, which is used to execute the method described in the embodiment of the present invention. The device comprises:

[0083] A partitioning module for subdividing the shot peening area into multiple micro-zones based on thickness;

[0084] An acquisition module is used to obtain the chord-wise section inertia moment and span-wise section inertia moment of each micro-region, as well as the chord-wise curvature radius;

[0085] The calculation module is used to select the thinnest micro-area as the target test area, calculate the target curvature radius of the micro-area, use the corresponding shot peening speed as the reference shot peening speed v0, and decompose the reference shot peening speed v0 along the chord direction and span direction to obtain the chord direction reference shot peening speed v 0y and spanwise reference shot peening speed v 0x ;

[0086] A determination module is used for determining, for each micro-area, the chord-wise curvature radius and the span-wise sectional inertia moment of the micro-area, the chord-wise curvature radius and the span-wise sectional inertia moment of the target test area, and the chord-wise reference shot peening velocity v obtained by decomposing the reference shot peening velocity v0. 0y , determine the chordal shot peening speed v iy Based on the chordal section inertia moment and chordal curvature radius of the micro-area, the chordal section inertia moment and chordal curvature radius of the target test area, and the spanwise reference shot peening speed v obtained by decomposing the reference shot peening speed v0 0x , determine the spanwise shot peening speed v ix ;

[0087] Synthesis module for converting the chordal shot peening velocity v iy and spanwise reference shot peening speed v 0x The shot peening speed v of each micro-area is obtained by synthesis. i , where i is the micro-area number.

[0088] In one implementable manner, the determining module is specifically configured to:

[0089] Calculate the spanwise section moment of inertia I of the target test area e0x The chordal curvature radius R of micro-region i i The product of I e0x R i ,

[0090] Calculate the spanwise section inertia I of micro-region i eix The product of the chordal curvature radius R0 of the target test area I eix R0,

[0091] Calculate v iy =(I e0x R i / I eix R0)*v 0y .

[0092] In one implementable manner, the determining module is further specifically configured to:

[0093] Calculate the chord-direction section inertia I of the target test area e0y The chordal curvature radius R of micro-region i i The product of I e0y R i ,

[0094] Calculate the chord-direction section inertia I of microregion i eiy The product of the chordal curvature radius R0 of the target test area I ei R0,

[0095] Calculate v ix =(Ie0y R i / I eiy R0)*v 0x .

[0096] An embodiment of the present invention also provides a shot peening forming speed design device for a skin with continuously variable thickness and curvature, comprising a processor and a memory, wherein the processor is configured to execute instructions stored in the memory, and the processor implements the design method described in the method embodiment of the present invention by executing the instructions.

[0097] An embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores instructions. When the instructions are executed on a processing component of a computer, the processing component executes the design method described in the method embodiment of the present invention.

[0098] An embodiment of the present invention further provides a computer program product comprising instructions, which, when run on a computer, enables the computer to execute the design method described in the method embodiment of the present invention.

[0099] The above merely describes the embodiments of the present invention, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the scope of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Furthermore, any portions not described in detail herein are conventional techniques.

Claims

1. A shot peening speed design method for continuously variable thickness and curvature skin, characterized in that: The method comprises: Step 1: Refine the shot peening area into multiple micro-areas based on thickness; Step 2: Obtain the chord-wise moment of inertia and span-wise moment of inertia of each micro-region, as well as the chord-wise radius of curvature; Step 3: Select the thinnest micro-area as the target test area, calculate the target curvature radius of the micro-area, use the corresponding shot peening speed as the reference shot peening speed v0, and decompose the reference shot peening speed v0 along the chord direction and span direction to obtain the chord direction reference shot peening speed v0. 0y and spanwise reference shot peening speed v 0x ; Step 4: For each micro-area, based on the spanwise moment of inertia and chordwise curvature radius of the micro-area, the spanwise moment of inertia and chordwise curvature radius of the target test area, and the chordwise reference shot peening velocity v obtained by decomposing the reference shot peening velocity v0, 0y , determine the chordal shot peening speed v iy Based on the chordal section inertia moment and chordal curvature radius of the micro-area, the chordal section inertia moment and chordal curvature radius of the target test area, and the spanwise reference shot peening speed v obtained by decomposing the reference shot peening speed v0 0x , determine the spanwise shot peening speed v ix ; Step 5: Change the chordal shot peening speed v iy and spanwise reference shot peening speed v 0x The shot peening speed v of each micro-area is obtained by synthesis. i , where i is the micro-area number.

2. The method according to claim 1, characterized in that The method further comprises: Step 6: Keep the processing parameters except the shot peening speed consistent with the test piece parameters, and shot peen the skin parts according to the shot peening forming speed corresponding to each micro-area to obtain the required target forming curvature radius.

3. The method according to claim 2, characterized in that The processing parameters are shot peening pressure, flow rate and shot peening distance.

4. The method according to claim 1, wherein In step 4, determine the tangential shot peening speed v iy Specifically include: Calculate the spanwise section moment of inertia I of the target test area e0x The chordal curvature radius R of micro-region i i The product of I e0x R i , Calculate the spanwise section inertia I of micro-region i eix The product of the chordal curvature radius R0 of the target test area I eix R0, Calculate v iy =(I e0x R i / I eix R0)*v 0y .

5. The method according to claim 1, wherein Determine the spanwise shot peening speed v in step 4 ix Specifically include: Calculate the chord-direction section inertia I of the target test area e0y The chordal curvature radius R of micro-region i i The product of I e0y R i , Calculate the chord-direction section inertia I of microregion i eiy The product of the chordal curvature radius R0 of the target test area I ei R0, Calculate v ix =(I e0y R i / I eiy R0)*v 0x .

6. A shot peening speed design device for continuously variable thickness and curvature skin, characterized in that: For executing the method according to any one of claims 1 to 5, the device comprises: A partitioning module for subdividing the shot peening area into multiple micro-zones based on thickness; An acquisition module is used to obtain the chord-wise section inertia moment and span-wise section inertia moment of each micro-region, as well as the chord-wise curvature radius; The calculation module is used to select the thinnest micro-area as the target test area, calculate the target curvature radius of the micro-area, use the corresponding shot peening speed as the reference shot peening speed v0, and decompose the reference shot peening speed v0 along the chord direction and span direction to obtain the chord direction reference shot peening speed v 0y and spanwise reference shot peening speed v 0x ; A determination module is used for determining, for each micro-area, the chord-wise curvature radius and the span-wise sectional inertia moment of the micro-area, the chord-wise curvature radius and the span-wise sectional inertia moment of the target test area, and the chord-wise reference shot peening velocity v obtained by decomposing the reference shot peening velocity v0. 0y , determine the chordal shot peening speed v iy Based on the chordal section inertia moment and chordal curvature radius of the micro-area, the chordal section inertia moment and chordal curvature radius of the target test area, and the spanwise reference shot peening speed v obtained by decomposing the reference shot peening speed v0 0x , determine the spanwise shot peening speed v ix ; Synthesis module for converting the chordal shot peening velocity v iy and spanwise reference shot peening speed v 0x The shot peening speed v of each micro-area is obtained by synthesis. i , where i is the micro-area number.

7. The device according to claim 6, characterized in that Identify the module, specifically for: Calculate the spanwise section moment of inertia I of the target test area e0x The chordal curvature radius R of micro-region i i The product of I e0x R i , Calculate the spanwise section inertia I of micro-region i eix The product of the chordal curvature radius R0 of the target test area I eix R0, Calculate v iy =(I e0x R i / I eix R0)*v 0y .

8. The device according to claim 6, characterized in that Determine the module, and specifically use it to: Calculate the chord-direction section inertia I of the target test area e0y The chordal curvature radius R of micro-region i i The product of I e0y R i , Calculate the chord-direction section inertia I of microregion i eiy The product of the chordal curvature radius R0 of the target test area I ei R0, Calculate v ix =(I e0y R i / I eiy R0)*v 0x .

9. A shot peening speed design device for continuously variable thickness and curvature skin, characterized in that: The invention comprises a processor and a memory, wherein the processor is configured to execute instructions stored in the memory, and the processor implements the design method according to any one of claims 1 to 5 by executing the instructions.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores instructions, and when the instructions are executed on a processing component of a computer, the processing component executes the design method according to any one of claims 1 to 5.

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