Iterative Finite Element Method for Predicting Deformations of Micro Thin Wall

doi:10.12068/j.issn.1005-3026.2018.04.015

Journal of Northeastern University Natural Science ›› 2018, Vol. 39 ›› Issue (4): 527-531.DOI: 10.12068/j.issn.1005-3026.2018.04.015

• Mechanical Engineering • Previous Articles Next Articles

Iterative Finite Element Method for Predicting Deformations of Micro Thin Wall

LI Peng-fei¹， LIU Yu¹， GONG Ya-dong¹， LI Liang-liang²

1. School of Mechanical Engineering & Automation， Northeastern University， Shenyang 110819， China; 2. Institute of Mechanical Technology， Shenyang Aircraft Industry

Received:2016-11-21 Revised:2016-11-21 Online:2018-04-15 Published:2018-04-10
Contact: LIU Yu
About author:-
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Abstract

Abstract: The iterative finite element method was introduced to the milling process of micro thin wall. A predicted model was established， and the milling deformations were predicted at different radial cutting depths and different thicknesses. The predicted model was validated by experiments and the Deform-3D simulation. The results showed that the deformation prediction value of the iterative finite element method is close to that of experimental machining. The residual thickness of the thin wall is greater than the thickness under the ideal conditions. The maximum deformation keeps maximal and then gradually reduces to 0 with increasing the wall thickness. The thickness of the thin wall should be coordinated with the cutting parameters in order to keep the adaptability between the stiffness and cutting force， otherwise it will lead to excessive deformation.

Key words: micro thin wall, iterative finite element method, micro milling, deformation analysis, deformation prediction

CLC Number:

TG50

LI Peng-fei， LIU Yu， GONG Ya-dong， LI Liang-liang. Iterative Finite Element Method for Predicting Deformations of Micro Thin Wall[J]. Journal of Northeastern University Natural Science, 2018, 39(4): 527-531.

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Iterative Finite Element Method for Predicting Deformations of Micro Thin Wall

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