An enhanced analytical model for residual stress prediction in machining


Lazoglu I., Ulutan D., Alaca B. E. , Engin S., Kaftanoglu B.

CIRP ANNALS-MANUFACTURING TECHNOLOGY, cilt.57, ss.81-84, 2008 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 57 Konu: 1
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1016/j.cirp.20013.03.060
  • Dergi Adı: CIRP ANNALS-MANUFACTURING TECHNOLOGY
  • Sayfa Sayıları: ss.81-84

Özet

The predictions of residual stresses are most critical on the machined aerospace components for the safety of the aircraft. In this paper, an enhanced analytic elasto-plastic model is presented using the superposition of thermal and mechanical stresses on the workpiece, followed by a relaxation procedure. Theoretical residual stress predictions are verified experimentally with X-ray diffraction measurements on the high strength engineering material of Waspaloy that is used critical parts such as in aircraft jet engines. With the enhanced analytical model, accurate residual stress results are achieved, while the computational time compared to equivalent FEM models is decreased from days to secends. (c) 2008 CIRP.