ON THE MORE RELIABLE INTRODUCTION OF THE RESIDUAL STRESSES IN THE THERMO-MECHANICAL ANALYSIS OF LAYE...
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DUBRAVKA MIJUCA Faculty of Mathematics University of Belgrade Serbia E-mail: [email protected] 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: [email protected] ac.yu. Hypothetical example The blade is of glass fibre/epoxy matrix pre-pregs

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Dubravka mijuca faculty of mathematics university of belgrade serbia e mail dmijuca matf bg ac yu

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: [email protected] ac.yu

NAFEMS seminar, 31 May - 1 June 2006

Prediction and Modelling of Failure Using FEA


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

  • The gear box is made of fibre/epoxy

  • The adhesive is made of epoxy

  • External load - gravitational


Dubravka mijuca faculty of mathematics university of belgrade serbia e mail dmijuca matf bg ac yu

Mijuca Dubravka, Finite element FEMIX HC EL


Dubravka mijuca faculty of mathematics university of belgrade serbia e mail dmijuca matf bg ac yu

Delamination

Mijuca Dubravka, Finite element FEMIX HC EL

Debonding

Crack


Dubravka mijuca faculty of mathematics university of belgrade serbia e mail dmijuca matf bg ac yu

Gravitational Load

Mijuca Dubravka, Finite element FEMIX HC EL

Gravitational Load and residual stress 1E6MPa


Dubravka mijuca faculty of mathematics university of belgrade serbia e mail dmijuca matf bg ac yu

Mijuca Dubravka, Finite element FEMIX HC EL


Dubravka mijuca faculty of mathematics university of belgrade serbia e mail dmijuca matf bg ac yu

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


Dubravka mijuca faculty of mathematics university of belgrade serbia e mail dmijuca matf bg ac yu

Pressure load on the upper side

Mijuca Dubravka, Finite element FEMIX HC EL


Dubravka mijuca faculty of mathematics university of belgrade serbia e mail dmijuca matf bg ac yu

  • 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

[email protected]


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