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DUBRAVKA MIJUCA Faculty of Mathematics University of Belgrade Serbia E-mail: dmijuca@matf.bg ac.yu

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DUBRAVKA MIJUCA Faculty of Mathematics University of Belgrade Serbia E-mail: dmijuca@matf.bg ac.yu - PowerPoint PPT Presentation


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ON THE MORE RELIABLE INTRODUCTION OF THE RESIDUAL STRESSES IN THE THERMO-MECHANICAL ANALYSIS OF LAYERED STRUCTURES. DUBRAVKA MIJUCA Faculty of Mathematics University of Belgrade Serbia E-mail: dmijuca@matf.bg ac.yu. Hypothetical example The blade is of glass fibre/epoxy matrix pre-pregs

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ON THE MORE RELIABLE INTRODUCTION OF THE RESIDUAL STRESSES IN THE THERMO-MECHANICAL ANALYSIS OF LAYERED STRUCTURES

DUBRAVKA MIJUCA

Faculty of Mathematics

University of Belgrade

Serbia

E-mail: dmijuca@matf.bg ac.yu

NAFEMS seminar, 31 May - 1 June 2006

Prediction and Modelling of Failure Using FEA

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Hypothetical example
  • The blade is of glass fibre/epoxy matrix pre-pregs
  • The gear box is made of fibre/epoxy
  • The adhesive is made of epoxy
  • External load - gravitational
slide4

Delamination

Mijuca Dubravka, Finite element FEMIX HC EL

Debonding

Crack

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Gravitational Load

Mijuca Dubravka, Finite element FEMIX HC EL

Gravitational Load and residual stress 1E6MPa

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Mijuca Dubravka, Finite element FEMIX HC EL

18789 dof’s per displacement vector and stress tensor

76.36 sec on the notebook 1.4GHz Intel Pentium (R) 512MB RAM

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Pressure load on the upper side

Mijuca Dubravka, Finite element FEMIX HC EL

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The reliable fully three-dimensional reliable primal-mixed approach is recommended for the use in the analysis of layered structures where residual stresses should be taken in the account

Reliable FEA consultancy and design

dmijuca@matf.bg.ac.yu