Simo J.C., Marsden J.E., On the Rotated Stress Tensor and the Material Version ofthe Doyle-Ericksen Formula, Archive for Rotational Mechanics and Analysis,104, 125-183, 1984.Simo J.C., A framework for f<strong>in</strong>ite stra<strong>in</strong> elastoplasticity based on maximum plastic<strong>di</strong>ssipation and the multiplicative decomposition: Part I. Cont<strong>in</strong>uum formulation,Computer Methods <strong>in</strong> Applied Mechanics and Eng<strong>in</strong>eer<strong>in</strong>g, 66, 199-219, 1998a.Simo J.C., A framework for f<strong>in</strong>ite stra<strong>in</strong> elastoplasticity based on maximum plastic<strong>di</strong>ssipation and the multiplicative decomposition: Part II. Computational Aspects,Computer Methods <strong>in</strong> Applied Mechanics and Eng<strong>in</strong>eer<strong>in</strong>g, 68, 1-31, 1998b.Souza A.C., Mamiya E.N., Zoua<strong>in</strong> N.. Three-<strong>di</strong>mensional model for solidsundergo<strong>in</strong>g stress-<strong>in</strong>duced phase transformations. European Journal of MechanicsA/Solids, 17, 789-806, 1998.Suquet P., Local and global aspect <strong>in</strong> the mathematical theory of plasticity, Plastcitytoday: model<strong>in</strong>g, Methods and aopplications. Elsevier, London, 279-310, 1985.Tanaka K., A thermomechanical sketch of shape-memory effect: one <strong>di</strong>mensionaltensile behavior, Res. Mechanica, 18, 251-263, 1986.Tanaka K., Hayashi T., Itoh Y., Tobushi H., Analysis of thermomechanical behaviorof shape-memory alloys, Mechanics of Materials, 13, 207-215, 1992.Tanaka K., Kobayashi S., Soto Y., Thermomechanics of transformationpseudoelasticity and shape-memory effect <strong>in</strong> alloys, Internation Journal ofPlasticity, 2, 59-72, 1986.170
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University of CassinoFaculty of Eng
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Contents1. INTRODUCTION ...........
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5.2.1.2. Finite Element Approximati
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1 INTRODUCTIONScience and technolog
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The implementations of the model in
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applications are presented in order
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2 SHAPE MEMORY ALLOYS2.1 Introducti
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transformation (M→A), indicated r
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Fig. 2.2: SuperelasticityFig. 2.3:
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The Differential Scanning Calorimet
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2.3 Biocompatibility of Shape-Memor
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only in the angioplasty procedure,
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micropumps used to unblock blood ve
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introduction of a multi-well free-e
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spectral decomposition allowing the
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Fig. 3.1: Reference and deformed co
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δ δ = δ and δ δ = δ(3.6)iI iJ
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and it is a two-point tensor since
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Furthermore,( ) 2 2Jdet b= det F =
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3.2.3 Polar DecompositionThe deform
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which can now be interpreted as fir
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Fig. 3.2: Representation of the pol
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ecause, as time progresses, the spe
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It can be introduced the rotated ra
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traction vector. For the Cauchy’s
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Nt per unit area acting on the boun
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transforms according to a= Qa. Velo
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∂∂t=−∂F∂t−1 −1 −1F
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where the direct dependency upon X
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3.4.2 Isotropic Hyperelasticity - M
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such phenomena as the Bauschinger e
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superposed to intermediate configur
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whereΨerepresents the elastic stra
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( )( ) E 1 ( )Ψ = h ω β T − M
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4.2.2 Clausius-Duhem InequalityIn o
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−1∂Ψe−TS− 2FtFt= 0∂Ce(4.
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qφ = T : dt− ⋅gradT≥0(4.30)T
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fact the values of ϕ andenergy usu
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4.2.5 Final Format of the Constitut
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1 ( C )*1t−1α = ( β T − M ( )
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5 FINITE STRAIN CONSTITUTIVE MODEL:
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2 3ζ 2 ζ 3exp( ζ g) = 1+ ζ g+ g
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where d is a user-defined parameter
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⎡R R Rt⎢⎢RR Rt⎢⎣R R RtC C
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γ• R,Ct=12EEtt(5.28)• R γ ,
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The spatial virtual work equation s
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[ E E E 2 E 2 E 2 E ]δE = δ δ δ
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ˆNLB = B + B (5.51)a a ain whichBa
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Kirchhoff stress and converting int
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DF( φ)[ u]d=dεε = 0( φ εu)∂
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In terms of the linear strain tenso
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6.2 3D Constitutive Model for Stres
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T − Mf Tη = η0− ⎡⎣h( ω)
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assumed to be ruled by the limit fu
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♦The limit function is assumed fu
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6.3.1.1 Time Integration of the 3D
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⎧∂f∂ ε⎪ C ⎡⎤⎣ ⎦⎪
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RRRRRRRR*( f )2 2 2Xd, X= I+ hΔ ζ
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If equation (6.42) is considered as
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7 3D-1D Constitutive Model with 1D
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*∂f6 3σ9 3 2 2 T Ml− hϑ+mz β
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- Page 153 and 154: 250200150100Axial force [N]500-50-1
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- Page 167 and 168: REFERENCESAdler P.H., Yu W., Pelton
- Page 169 and 170: Auricchio F., Taylor R., A return-m
- Page 171 and 172: Ciarlet P.G., The Finite Element Me
- Page 173 and 174: Huang M.S., Brinson L.C., A multiva
- Page 175: Raniecki B., Lexcellent Ch., Thermo