Volume 30 Issue 09
Sep.  2004
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Du Song, Anatoly, Chumadinet al. Numerical calculation of stretch bending of narrow strip and analysis on spring back[J]. Journal of Beijing University of Aeronautics and Astronautics, 2004, 30(09): 863-867. (in Chinese)
Citation: Du Song, Anatoly, Chumadinet al. Numerical calculation of stretch bending of narrow strip and analysis on spring back[J]. Journal of Beijing University of Aeronautics and Astronautics, 2004, 30(09): 863-867. (in Chinese)

Numerical calculation of stretch bending of narrow strip and analysis on spring back

  • Received Date: 24 Sep 2003
  • Publish Date: 30 Sep 2004
  • To analyse stretch bending of narrow strip by numerical calculation, taking the loading history into account, the deformed zone was divided intomany elements to determine their strain by the condition that constant volume remains in deformation. Increment strain theory was applied to calculating the stress distribution from difference equation and the effect of loading history on them was discussed. The formulae for calculating the bend radius of neutral plane and the decrement of bend angle after springback were derived by considering the deformation after unloading. The simulative results show that stress distribution under stretching with superimposed bending is more advantageous to the reduction of spring back.

     

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