Prediction of residual stress regeneration in multi-pass milling

Machining-induced residual stress is important for the part performance. In the literature, various predictive models have been proposed for residual stress in one-pass machining without considering the multi-pass aspect. This study describes the regeneration of residual stress in multi-pass machini...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2016-03, Vol.83 (5-8), p.1153-1160
Main Authors: Fergani, Omar, Jiang, Xiaohui, Shao, Yamin, Welo, Torgeir, Yang, Jianguo, Liang, Steven
Format: Article
Language:English
Subjects:
CAE) and Design
Computer-Aided Engineering (CAD
Elastic analysis
Engineering
Industrial and Production Engineering
Initial stresses
Mechanical Engineering
Media Management
Milling (machining)
Original Article
Prediction models
Regeneration
Residual stress
Stress functions
Stress relaxation
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Summary:Machining-induced residual stress is important for the part performance. In the literature, various predictive models have been proposed for residual stress in one-pass machining without considering the multi-pass aspect. This study describes the regeneration of residual stress in multi-pass machining with thermo-mechanical loadings, in the full elasto-plastic state, captured using the Neumann-Duhamel principle. The residual stress is then analysed satisfying elastic-plastic relaxation in-between layers and at the boundaries. Large experimental data in milling of AA2121-T3 agreed well with model predictions, thus supporting the consideration of initial stress functions, materials cyclic plasticity and compatibility to allow for residual stress prediction in multi-pass machining.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-015-7464-9