Determination of unknown elastoplastic properties in Signorini problem


Hasanov A., Seyidmamedov Z.

INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS, cilt.33, ss.979-991, 1998 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 33 Konu: 6
  • Basım Tarihi: 1998
  • Doi Numarası: 10.1016/s0020-7462(97)00062-0
  • Dergi Adı: INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
  • Sayfa Sayıları: ss.979-991

Özet

The problem of recovering the plasticity function of non-linear Lame equation from the knowledge of penetration diagram is considered. Mathematical modelling of the identification problem leads to an inverse Signorini problem for a non-linear operator with a non-local additional condition (measured data). Using a variational method coefficient stability in H-1 is proved. Then based on this result, the existence of a quasisolution is obtained in a physically admissible class of coefficients. The numerical method and examples are also presented. (C) 1998 Elsevier Science Ltd. All rights reserved.