Antti H. Niemi
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A class of discontinuous Petrov–Galerkin methods. Part III: Adaptivity
L Demkowicz, J Gopalakrishnan, AH Niemi
Applied numerical mathematics 62 (4), 396-427, 2012
1272012
Isogeometric analysis for sixth-order boundary value problems of gradient-elastic Kirchhoff plates
J Niiranen, J Kiendl, AH Niemi, A Reali
Computer Methods in Applied Mechanics and Engineering 316, 328-348, 2017
662017
Variational formulation and isogeometric analysis for fourth-order boundary value problems of gradient-elastic bar and plane strain/stress problems
J Niiranen, S Khakalo, V Balobanov, AH Niemi
Computer Methods in Applied Mechanics and Engineering 308, 182-211, 2016
572016
Discontinuous Petrov–Galerkin method with optimal test functions for thin-body problems in solid mechanics
AH Niemi, JA Bramwell, LF Demkowicz
Computer Methods in Applied Mechanics and Engineering 200 (9-12), 1291-1300, 2011
442011
On the shape optimization of flapping wings and their performance analysis
M Ghommem, N Collier, AH Niemi, VM Calo
Aerospace Science and Technology 32 (1), 274-292, 2014
352014
Variational formulations and general boundary conditions for sixth-order boundary value problems of gradient-elastic Kirchhoff plates
J Niiranen, AH Niemi
European Journal of Mechanics-A/Solids 61, 164-179, 2017
322017
Automatically stable discontinuous Petrov–Galerkin methods for stationary transport problems: Quasi-optimal test space norm
AH Niemi, NO Collier, VM Calo
Computers & Mathematics with Applications 66 (10), 2096-2113, 2013
292013
A bilinear shell element based on a refined shallow shell model
AH Niemi
International journal for numerical methods in engineering 81 (4), 485-512, 2010
252010
Analysis of the discontinuous Petrov–Galerkin method with optimal test functions for the Reissner–Mindlin plate bending model
VM Calo, NO Collier, AH Niemi
Computers & Mathematics with Applications 66 (12), 2570-2586, 2014
232014
Discontinuous Petrov-Galerkin method based on the optimal test space norm for one-dimensional transport problems
AH Niemi, NO Collier, VM Calo
Procedia Computer Science 4, 1862-1869, 2011
212011
Finite element analysis of the Girkmann problem using the modern hp-version and the classical h-version
AH Niemi, I Babuška, J Pitkäranta, L Demkowicz
Engineering with Computers 28 (2), 123-134, 2012
202012
Benchmark computations on point-loaded shallow shells: Fourier vs. FEM
AH Niemi, J Pitkäranta, H Hakula
Computer methods in applied mechanics and engineering 196 (4-6), 894-907, 2007
182007
An ultraweak formulation of the Kirchhoff–Love plate bending model and DPG approximation
T Führer, N Heuer, A Niemi
Mathematics of Computation 88 (318), 1587-1619, 2019
142019
Approximation of shell layers using bilinear elements on anisotropically refined rectangular meshes
AH Niemi
Computer methods in applied mechanics and engineering 197 (45-48), 3964-3975, 2008
142008
Discontinuous Petrov–Galerkin method based on the optimal test space norm for steady transport problems in one space dimension
AH Niemi, NO Collier, VM Calo
Journal of Computational Science 4 (3), 157-163, 2013
132013
Bilinear finite elements for shells: Isoparametric quadrilaterals
AH Niemi, J Pitkäranta
International journal for numerical methods in engineering 75 (2), 212-240, 2008
82008
Shape optimization and performance analysis of flapping wings
M Ghommem, N Collier, AH Niemi, VM Calo
Proceedings of The Eighth International Conference on Engineering …, 2012
72012
Differential cubature method for gradient-elastic Kirchhoff plates
SM Mousavi, J Niiranen, AH Niemi
Journal of Structural Mechanics 48, 164-180, 2015
62015
A class of discontinuous Petrov-Galerkin methods. III
L Demkowicz, J Gopalakrishnan, A Niemi
Optimal test functions, 2010
62010
Benchmark Computations of stresses in a spherical dome with shell finite elements
AH Niemi
SIAM Journal on Scientific Computing 38 (3), B440-B457, 2016
52016
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Artiklar 1–20