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

Abstract:

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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.

Info:

Periodical:

Advanced Materials Research (Volumes 24-25)

Edited by:

Hang Gao, Zhuji Jin and Yannian Rui

Pages:

355-360

Citation:

Z. T. Tang et al., "Optimization of Bulkhead Processing Sequence for Multi-Frame Monolithic Components by FEM", Advanced Materials Research, Vols. 24-25, pp. 355-360, 2007

Online since:

September 2007

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Price:

$38.00

[1] S. Ratchev, S. Liu, W. huang and A. A. Becker, Milling error prediction and compensation in machining of low-rigidity parts, International Journal of Machine Tools & Manufacture, vol. 44, no. 15, pp.1629-1641, Dec. (2004).

DOI: https://doi.org/10.1016/j.ijmachtools.2004.06.001

[2] S. Smith, and D. Dvorak, Tool path strategies for high speed milling aluminum workpieces with thin webs, Mechatronics, vol. 8, no. 4, pp.291-300, Jun. (1998).

DOI: https://doi.org/10.1016/s0957-4158(97)00058-5

[3] H. Y. Dong, Y. L. Ke, Q. Wu and D. Xu, Finite element model for optimal clamping scheme of frame shape workpiece based on residual stress distribution, Acta Aeronautica ET Astronautica Sinica, vol. 124, no. 14, pp.382-384, Jul. (2003).

[4] J. Sun, and Y. L. Ke, Study on machining distortion of unitization airframe due to residual stress, Chinese Journal of Mechanical Engineering, vol. 41, no. 2, pp.118-122, Feb. (2005).

DOI: https://doi.org/10.3901/jme.2005.02.117

[5] K. Wu, N. He, W. H. Liao and W. Zhao, Study on machining deformations and their control approaches of the thin-web in end milling , China Mechanical Engineering, vol. 15, no. 8, pp.670-674, Apr. (2004).

[6] Z. J. Wang, W. Y. Chen, Y. D. Zhang , Z. T. Chen and Q. Liu, Study on the machining distortion of thin-walled part caused by redistribution of residual stress, Chinese Journal of Aeronautics, vol. 18, no. 2, pp.175-179, May. (2005).

DOI: https://doi.org/10.1016/s1000-9361(11)60325-7

[7] H. Y. Dong, and Y. L. Ke, Study on machining deformation of aircraft monolithic component by FEM and experiment, Chinese Journal of Aeronautics, vol. 19, no. 3, pp.247-254, Aug. (2006).

DOI: https://doi.org/10.1016/s1000-9361(11)60352-x