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Journal of Zhejiang University SCIENCE A 2009 Vol.10 No.5 P.661-668


Machining distortion prediction of aerospace monolithic components

Author(s):  Yun-bo BI, Qun-lin CHENG, Hui-yue DONG, Ying-lin KE

Affiliation(s):  State Key Lab of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   zjubyb@zju.edu.cn

Key Words:  Monolithic component, Machining distortion, Finite element simulation

Yun-bo BI, Qun-lin CHENG, Hui-yue DONG, Ying-lin KE. Machining distortion prediction of aerospace monolithic components[J]. Journal of Zhejiang University Science A, 2009, 10(5): 661-668.

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T1 - Machining distortion prediction of aerospace monolithic components
A1 - Yun-bo BI
A1 - Qun-lin CHENG
A1 - Hui-yue DONG
A1 - Ying-lin KE
J0 - Journal of Zhejiang University Science A
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DOI - 10.1631/jzus.A0820392

To predict the distortion of aerospace monolithic components, a model is established to simulate the numerical control (NC) milling process using 3D finite element method (FEM). In this model, the cutting layer is simplified firstly. Then, the models of cutting force and cutting temperature are established to gain the cutting loads, which are applied to the mesh model of the part. Finally, a prototype of machining simulation environment is developed to simulate the milling process of a spar. Key factors influencing the distortion, such as initial residual stress, cutting loads, fixture layout, cutting sequence, and tool path are considered all together. The total distortion of the spar is predicted and an experiment is conducted to validate the numerical results. It is found that the maximum discrepancy between the simulation results and experiment values is 19.0%.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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