Jianchi YU, Xingliang CHAI, Guoqiang GUO, Yongsheng ZHANG, Haibo LIU, Yongqing WANG. Prediction and Compensation Method for Machining Global Deformation of Large Storage Tank Bottom[J]. AEROSPACE SHANGHAI, 2024, 41(6): 70
- AEROSPACE SHANGHAI
- Vol. 41, Issue 6, 70 (2024)
Fig. 1. Stresses of the middle curved surface in a thin shell differential element
Fig. 2. Displacement and rotation of the curved surface area of the rotary thin-walled workpiece
Fig. 3. Pre-processing of the finite element simulation
Fig. 4. Flow chart of the simulation analysis
Fig. 5. Test site of milling machining
Fig. 6. Test site of the linear laser sensor
Fig. 7. Measurement point cloud data of the test workpiece after processing
Fig. 8. Contour cloud maps of deformation values during processing
Fig. 9. Internal profiles of the surface obtained by the linear laser sensor measurement and theoretical calculation when the workpiece thickness is 10.5 mm
Fig. 10. Internal profiles of the surface obtained by the linear laser sensor measurement and theoretical calculation when the workpiece thickness is 4.5 mm
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Table 1. Initial residual stress values of the element in each layer
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Table 2. Parameters to be measured by the linear laser sensor
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Table 3. Maximum deformation values and area division numbers under different thicknesses
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Table 4. Compensation values of each area with 4.5 mm workpiece thickness
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