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Optimization of Bulkhead Processing Sequence for Multi-Frame Monolithic Components by FEM

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Abstract:

When machining aerospace monolithic components, most of materials could be removed, resulting in severe deformation of the parts due to the release and redistribution of the blank’s original residual stress, together with the action of cutting loads and clamping force. A finite element model (FEM) is built for predicting the deformation caused by those factors mentioned above. In this model, some key techniques such as material properties, initial residual stress model, and application of dynamic cutting loads and transformation of boundary condition are discussed in details. The proposed model predicts the machining deformation for multi-frame monolithic components. Particular attention is paid to the influence of the bulkhead processing sequence on part deformation. At last the paper puts forwards optimal bulkhead processing sequence based on minimizing the machining deformation.

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Periodical:

Advanced Materials Research (Volumes 24-25)

Pages:

355-360

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.24-25.355

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Cite this paper

Online since:

September 2007

Authors:

Zhi Tao Tang, Zhan Qiang Liu, Xing Ai

Keywords:

Frame Monolithic Components, Machining Deformation, Milling Processing Sequence, Residual Stress

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

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