Department of Civil and Structural Engineering
Sir Frederick Mappin Building
Mappin Street, Sheffield, S1 3JD
Harm Askes obtained his MSc degree in Civil Engineering from Delft University of Technology (Netherlands) in 1995. He also studied psychology and philosophy at Leiden University (Netherlands). In 2000 he was awarded a PhD from Delft University of Technology for his work in computational methods for failure analysis, followed in 2013 by a DEng from the University of Sheffield for his overall research accomplishments.
From 1999 until 2004 he was an Assistant Professor at the Faculty of Civil Engineering in Delft, where he was teaching Structural Mechanics and carrying out research in the field of Computational Mechanics. In September 2004 he was appointed Professor of Computational Mechanics at the Department of Civil and Structural Engineering of the University of Sheffield. He has also been the Head of Department since 2009.
His research interests are the modelling of engineering structures and materials. The two main themes are Numerical Methods and Mechanics of Materials:
Error estimation and mesh adaptivity are required for efficient and accurate finite element analysis. Recent work focuses on applications to failure analysis and is carried out with Dr Canh Le Van, Prof. Matthew Gilbert and Dr Tanyada Panachet (Khon Kaen University, Thailand).
Constraint equations are an essential ingredient of many mathematical models. Recent work includes the use of negative penalty functions in terms of stiffness as well as inertia, carried out with Jack Hetherington, Prof. Antonio Rodriguez-Ferran (Universitat Politecnica de Catalunya, Spain) and Prof. Sinniah Ilanko (University of Waikato, New Zealand).
Mechanics of Materials:
Gradient-enriched continuum theories can be used to capture a range of microstructure-driven phenomena such as wave dispersion, size effects and strain localisation. The formulation of such gradient theories is pursued in collaboration with Prof. Andrei Metrikine of Delft University of Technology (Netherlands), Prof. Elias Aifantis of Aristotle University of Thessaloniki (Greece) and Prof. Antonio Rodriguez-Ferran of the Universitat Politecnica de Catalunya (Spain).
Following up on the previous item, the implementation of gradient theories is normally not straightforward due to the higher-order continuity requirements. Flexible finite element implementations are developed for straightforward implementation in existing software packages.
Recent activities and achievements
- Executive Committee of the UK Association of Computational Mechanics in Engineering (2005-present)
- Editorial Advisory Panel of the Proceedings of the ICE "Engineering and Computational Mechanics'' (2007-2011)
- Associate Editor of the Journal of the Mechanical Behavior of Materials (2007-present)
- Visiting Professor of the Universitat Politecnica de Catalunya (Barcelona, Spain) (2005-2006, 2008-2012)
- Visiting Professor of Aalto University (Finland, formerly Helsinki University of Technology) (2006, 2011)
- Senate Award for Departmental Leadership in Learning and Teaching in July 2013
- Voted "Best Lecturer" of the Department by graduating students in June 2008