Pitkäranta, Juhani

name

• Pitkäranta, Juhani

Authored works

• A generalized finite element procedure for the transport equation
• A modified Reissner-Mindlin formulation for plates with corners
• A multigrid version of a simple finite element method for the stokes problem
• A symmetrized perturbation procedure for the transport operator
• Analysis of some low-order finite element schemes for Mindlin-Reissner and Kirchhoff plates
• Analysis of some mixed finite element methods for plane elasticity equations
• Approximate solution of the transport equation by methods of Galerkin type
• Discontinuous variational approximations of neutron diffusion and transport theory
• Error bounds for the approximation of the stokes problem using bilinear/constant elements on irregular quadrilateral meshes
• Error estimates for the combined spatial and angular approximations of the transport equation for slab geometry
• Estimates for the derivatives of solutions to weakly singular Fredholm integral equations
• Finite element analysis of some critical fast assemblies
• Finite element solution of the multigroup transport equation in two-dimensional geometries
• Finite element transport calculations in two-dimensional X-Y and R-Z geometries
• Integraalimuunnokset
• Local stability conditions for the Babuška method of Lagrange multipliers
• Mathematical and historical reflections on the lowest-order finite element models for thin structures
• Numerical solution of the discrete-ordinate transport equation in slab geometry : error bounds for projection schemes
• On a mixed finite element method for the Stokes problem in R[sup 3]
• On the convergence of Galerkin-type approximations of the transport operator
• On the differential properties of solutions to Fredholm equations with weakly singular kernels
• On the spatial differencing of the discrete ordinate neutron transport equation
• On the variational approximation of the transport operator
• Properties of the solution to a linear transport equations from the viewpoint of variational approximation
• Solution of the transport equation by variational finite-element approximations
• Teknillisen korkeakoulun ensimmäisen lukuvuoden laaja matematiikka (2000-2013)
• The finite element method with Lagrange multipliers for domains with corners
• The finite element method with Lagrange multipliers for the biharmonic problem
• The first locking-free plane-elastic finite element : historia mathematica
• The problem of membrane locking in finite element analysis of cylindrical shells
• TKK:n laaja matematiikka : 2
• Vacuum description in symmetrized transport calculations
• Variational difference schemes for the discrete ordinate transport equation

Works contributed to

• A finite element scheme for the study of neutron transport in fusion reactor blankets
• An analysis of finite element locking in a parameter dependent model problem
• An analysis of the discontinuous Galerkin method for a scalar hyperbolic equation
• An energy method approach to the problem of elastic strip
• An h-p-n adaptive finite element scheme for shell problems
• Analysis of a bilinear finite element for shallow shells : 2, Consistency error
• Characterization of the membrane theory of a thin clamped shell of revolution : the parabolic case
• Energy estimates relating different linear elastic models of a thin cylindrical shell : (2), The bending-dominated case
• Numeerisen analyysin seminaari keväällä 1980
• On corner irregularities that arise in hyperbolic shell membrane theory
• On the membrane locking of h - p finite elements in a cylindrical shell problem
• On the stabilization of finite element approximations of the stokes equations
• Pinched shells of revolution : experiments on high order FEM
• Scale resolution, locking, and high-order finite element modelling of shells
• Shell deformation states and the finite element method : a benchmark study of cylindrical shells

Works about Pitkäranta, Juhani