A peen forming method for a ribbed structure
A technology for shot peening and structural parts, applied in the field of shot peening, can solve the problems of deflection profile, instability, torsion, etc., and achieve the effect of increasing the amount of shot peening deformation and improving the fatigue life.
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[0024] Example one
[0025] Shot peening the ribbed structure to form a convex bending deformation along the rib direction. The material is aluminum alloy 2024T351, the target radius of curvature is 2500mm, the rib height is 50mm, the wall thickness is 10mm, the rib thickness is 6mm, and the wall width is 90mm. The material shot peening method is as follows:
[0026] 1) Determine the position of the neutral axis, divide the cross section of the ribbed structure into i graphics, and use the centroid coordinate formula of the cross-sectional graphics in material mechanics to calculate y - = Σ A i y ‾ i Σ A i Determine the position of the neutral axis of the section of the ribbed struc...
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[0028] Example two
[0029] Shot peening the ribbed structural parts to form a concave bending deformation along the rib direction. The material is aluminum alloy 2024T351, the target radius of curvature is 4000mm, the rib height is 56mm, the wall thickness is 4mm, the rib thickness is 4mm, and the wall width is 70mm. The forming method is as follows:
[0030] 1) Determine the position of the neutral axis, y - = Σ A i y ‾ i Σ A i = 70 × 4 × 2 + 56 × 4 × 32 70 ...
Example Embodiment
[0032] Example three
[0033] Shot peening formed the ribbed structure to form a convex bending deformation along the direction of the ribs. The overall ribbed structure shape is " "The material is aluminum alloy 2024T351, the target radius of curvature is 2000mm, the rib height is 45mm, the wall thickness is 9mm, the rib thickness is 8mm, the top width of the rib is 20mm, the top thickness of the rib is 6mm, and the wall width is 85mm using prestressed shot peening. , The forming method is as follows:
[0034] 1) Determine the position of the neutral axis, divide the cross section of the ribbed structure into i graphics, and use the centroid coordinate formula of the cross-sectional graphics in material mechanics to calculate y - = Σ A i y ‾ i Σ ...
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