[PDF][PDF] Plates and shells: asymptotic expansions and hierarchic models

M Dauge, E Faou, Z Yosibash - Encyclopedia of computational mechanics, 2004 - Citeseer
Plates and shells are characterized by (i) their midsurface S,(ii) their thickness d. The plate
or shell character is that d is small compared to the dimensions of S. In this respect, we …

A DPG method for shallow shells

T Führer, N Heuer, AH Niemi - Numerische Mathematik, 2022 - Springer
We develop and analyze a discontinuous Petrov–Galerkin method with optimal test
functions (DPG method) for a shallow shell model of Koiter type. It is based on a uniformly …

[HTML][HTML] Modelling of thin viscoelastic shell structures under Reissner–Mindlin kinematic assumption

E Hernandez, C Naranjo, J Vello** - Applied Mathematical Modelling, 2020 - Elsevier
In this paper, we study thin viscoelastic shell structures using a constitutive equation in
hereditary integral form. An alternative mathematical formulations for several viscoelastic …

A bilinear shell element based on a refined shallow shell model

AH Niemi - International journal for numerical methods in …, 2010 - Wiley Online Library
A four‐node shell finite element of arbitrary quadrilateral shape is developed and applied to
the solution of static and vibration problems. The element incorporates five generalized …

Asymptotic and numerical analysis of the eigenvalue problem for a clamped cylindrical shell

LB Da Veiga, H Hakula, J Pitkäranta - Mathematical Models and …, 2008 - World Scientific
We are interested in the asymptotic analysis of the eigenvalue problem of clamped
cylindrical shells. We analyze the lowest eigenvalues as a function of the shell thickness t …

Approximation of shell layers using bilinear elements on anisotropically refined rectangular meshes

AH Niemi - Computer methods in applied mechanics and …, 2008 - Elsevier
In this paper, we study numerical locking effects in the finite element approximation of shell
layers. The focus is on four-node degenerated elements that are perhaps the most widely …

Dual-mixed hp-version axisymmetric shell finite element using NURBS mid-surface interpolation

B Tóth, D Burmeister - Acta Mechanica, 2020 - Springer
A new, general hp-version axisymmetric finite element is derived for the boundary value
problems of thin linearly elastic shells of revolution, applying a complementary strain energy …

Bilinear finite elements for shells: Isoparametric quadrilaterals

AH Niemi, J Pitkäranta - International journal for numerical …, 2008 - Wiley Online Library
We study the accuracy and reliability of the lowest‐order bilinear shell finite element
schemes. Our approach is based mainly on a simplified shallow shell model analogous to …

Koiter estimate revisited

M Dauge, E Faou - Mathematical Models and Methods in Applied …, 2010 - World Scientific
We prove a general adimensional energy estimate between the solution of the three-
dimensional Lamé system on a thin clamped shell and a displacement reconstructed from …

Point load on a shell

AH Niemi, H Hakula, J Pitkäranta - … of ENUMATH 2007, the 7th European …, 2008 - Springer
We study the fundamental (normal point load) solution for shallow shells. The solution is
expressed as a Fourier series and its properties are analyzed both at the asymptotic limit of …