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## 6.4. Plate and Laminate Models for SMA Applications

An initially flat plate is defined by its reference domain Ω:

$Ω={(X1,X2,Z)∈R3/Z∈(−t2,t2),(X1,X2)∈M⊂R2}$

(6.41)

where t is the constant thickness of the plate, Z is the transverse coordinate orthogonal to the undeformed mid-plane $M$ identified by Z = 0 and (X1,X2) are mid-plane (or simply in-plane) reference coordinates.

### 6.4.1. Finite Deformation Plate Model

The following displacement field is assumed for the plate:

$v(X1,X2,Z)=u(X1,X2)+Zφ(X1,X2)+Z2ψ(X1,X2)$

(6.42)

where u = {u1,u2,u3}T represents the displacement ...

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