Embed Size (px)
DESCRIPTION
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 - PowerPoint PPT Presentation
Citation preview
NAFEMS seminar, 31 May - 1 June 2006Prediction and Modelling of Failure Using FEA
ON THE MORE RELIABLE INTRODUCTION OF THE RESIDUAL STRESSES IN THE THERMO-MECHANICAL ANALYSIS OF LAYERED STRUCTURES
DUBRAVKA MIJUCAFaculty of MathematicsUniversity of BelgradeSerbiaE-mail: [email protected] ac.yu
Mijuca Dubravka, Faculty of Mathematics, Department of Mechanics, University of [email protected]; www.matf.bg.ac.yu/~dmijuca
On The More Reliable Introduction Of The Residual Stresses In The Thermo-mechanical Analysis Of Layered Structures
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
Contour method Example CAD
Mijuca Dubravka, Faculty of Mathematics, Department of Mechanics, University of [email protected]; www.matf.bg.ac.yu/~dmijuca
On The More Reliable Introduction Of The Residual Stresses In The Thermo-mechanical Analysis Of Layered Structures
Example CAD Syy results
Mijuca Dubravka, Finite element FEMIX HC EL
Mijuca Dubravka, Finite element FEMIX HC EL
Mijuca Dubravka, Faculty of Mathematics, Department of Mechanics, University of [email protected]; www.matf.bg.ac.yu/~dmijuca
On The More Reliable Introduction Of The Residual Stresses In The Thermo-mechanical Analysis Of Layered Structures
Delamination
Debonding
Crack
CAD Syy results +Residual stresses
Mijuca Dubravka, Finite element FEMIX HC EL
Mijuca Dubravka, Finite element FEMIX HC EL
Mijuca Dubravka, Faculty of Mathematics, Department of Mechanics, University of [email protected]; www.matf.bg.ac.yu/~dmijuca
On The More Reliable Introduction Of The Residual Stresses In The Thermo-mechanical Analysis Of Layered Structures
Gravitational Load and residual stress 1E6MPa
Gravitational Load
Syy results +Residual stresses Rotor blade
Mijuca Dubravka, Finite element FEMIX HC EL
Mijuca Dubravka, Finite element FEMIX HC EL
Mijuca Dubravka, Faculty of Mathematics, Department of Mechanics, University of [email protected]; www.matf.bg.ac.yu/~dmijuca
On The More Reliable Introduction Of The Residual Stresses In The Thermo-mechanical Analysis Of Layered Structures
+Residual stresses
Rotor bladePressure load from
CFD
Mijuca Dubravka, Finite element FEMIX HC EL
Mijuca Dubravka, Finite element FEMIX HC EL
Mijuca Dubravka, Faculty of Mathematics, Department of Mechanics, University of [email protected]; www.matf.bg.ac.yu/~dmijuca
On The More Reliable Introduction Of The Residual Stresses In The Thermo-mechanical Analysis Of Layered Structures
+Residual stresses
Rotor bladePressure load from
CFD
18789 dof’s per displacement vector and stress tensor
76.36 sec on the notebook 1.4GHz Intel Pentium (R) 512MB RAM
Mijuca Dubravka, Finite element FEMIX HC EL
Mijuca Dubravka, Finite element FEMIX HC EL
Mijuca Dubravka, Faculty of Mathematics, Department of Mechanics, University of [email protected]; www.matf.bg.ac.yu/~dmijuca
On The More Reliable Introduction Of The Residual Stresses In The Thermo-mechanical Analysis Of Layered Structures
Pressure load on the upper side
Rotor bladePressure load from
CFDConclusion
Mijuca Dubravka, Finite element FEMIX HC EL
Mijuca Dubravka, Finite element FEMIX HC EL
Mijuca Dubravka, Faculty of Mathematics, Department of Mechanics, University of [email protected]; www.matf.bg.ac.yu/~dmijuca
On The More Reliable Introduction Of The Residual Stresses In The Thermo-mechanical Analysis Of Layered Structures
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
Pressure load from CFD
Conclusion Thank you
Reliable FEA consultancy and [email protected]
