Insights and Innovations in Structural Engineering, Mechanics and Computation 2016
DOI: 10.1201/9781315641645-68
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Geometrically nonlinear and coupled thermopiezomechanical modeling and analysis of smart FGM plates and shells

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“…These elements are typically defined by two layers of nodes on the outer surfaces of the shell with three displacement degrees of freedom (DOF) and are known as isoparametric six‐parameter piezoelectric solid‐shell elements. However, the six‐parameter solid‐shell element formulation based on the complete constitutive equations of thermopiezoelectricity 47,48 is deficient because thickness locking occurs. This is due to the fact that the linear displacement field in the thickness direction results in a constant transverse normal strain, which causes artificial stiffening of the shell element in the case of nonzero Poisson's ratios.…”
Section: Introductionmentioning
confidence: 99%
“…These elements are typically defined by two layers of nodes on the outer surfaces of the shell with three displacement degrees of freedom (DOF) and are known as isoparametric six‐parameter piezoelectric solid‐shell elements. However, the six‐parameter solid‐shell element formulation based on the complete constitutive equations of thermopiezoelectricity 47,48 is deficient because thickness locking occurs. This is due to the fact that the linear displacement field in the thickness direction results in a constant transverse normal strain, which causes artificial stiffening of the shell element in the case of nonzero Poisson's ratios.…”
Section: Introductionmentioning
confidence: 99%