On modeling elastic bodies with defects

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11 Citations (Scopus)

Abstract

The paper concerns a mathematical analysis of equilibrium problems for 2D elastic bodies with thin defects. The defects are characterized with a damage parameter. A presence of defects implies that the problems are formulated in a nonsmooth domain with a cut. Nonlinear boundary conditions at the cut faces are considered to prevent a mutual penetration between the faces. Weak and strong formulations of the problems are analyzed. The paper provides an asymptotic analysis with respect to the damage parameter. We obtain invariant integrals over curves surrounding the defect tip. An optimal control problem is investigated with a cost functional equal to the derivative of the energy functional with respect to the defect length, and the damage parameter being a control function.

Original languageEnglish
Pages (from-to)153-166
Number of pages14
JournalСибирские электронные математические известия
Volume15
DOIs
Publication statusPublished - 1 Jan 2018

Keywords

  • Damage parameter
  • Defect
  • Derivative of energy functional
  • Non-penetration boundary conditions
  • Optimal control
  • Variational inequality

OECD FOS+WOS

  • 1.01 MATHEMATICS

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