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Knut Morten Okstad

Research Scientist

Knut Morten Okstad

Research Scientist

Knut Morten Okstad
Phone: 928 17 318
Department: Mathematics and Cybernetics
Office: Trondheim

Publications and responsibilities

Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1757996

Recovery-based error estimation for thin plate problems (the bi-harmonic equation) is revisited in the context of Isogeometric analysis. A posteriori energy-norm error estimates based on global L2-recovery of the bending moments is shown to enable optimal convergence rates for both smooth and non-sm...

Authors Kvamsdal Trond Okstad Knut Morten Kumar Mukesh Kvarving Arne Morten Mathisen Kjell Magne
Year 2019
Type Part of a book/report
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1505076

In this work the geometrically exact three-dimensional beam theory has been used as basis for development of a family of isoparametric higher order large deformation curved beam elements. Geometrically exact three-dimensional beam theory has no restrictions with respect to the magnitude of displacem...

Authors Mathisen Kjell Magne Bazilevs Yuri Haugen Bjørn Helgedagsrud Tore Andreas Kvamsdal Trond Okstad Knut Morten Raknes Siv Bente
Year 2017
Type Part of a book/report
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1375572

In this paper we describe and evaluate an isogeometric finite element program, IFEM-FSI, for doing coupled fluid–structure interaction simulations. We investigate the role played by employing higher polynomial orders and higher regularity for solving a well known benchmark problem for flow past a ci...

Year 2016
Type Journal publication