Jakob Olofsson

Senior Lecturer Materials and Manufacturing - Casting
Associate Professor
PhD

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Research

Jakob Olofsson's research is within product development of cast components, with focus on structural analyses with consideration of the local variations in mechanical properties that are obtained in cast components. By considering these variations it is possible to obtain a better prediction of the component behaviour when the component is subjected to load. This enables a more effective product development process for cast components and leads to better predictions of, e.g., how much load the component can withstand, where it is risk for component failure or how long the component will last. Computer simulations of the different steps of the casting process are used to predict the local variations in both elastic and plastic mechanical properties, and simulations based on the Finite Element method (FEM) are used to predict the stresses and strains obtained in the component when subjected to load.

The research is mainly performed in the research project CCSIM within the research profile CompCAST. The project aims to enable a closed chain of simulations for cast components, from casting to component behaviour in service. The project mainly focuses on cast aluminium alloys, but Jakob´s research also involves different types of cast irons. Jakob has previously been involved in the research projects VI and VIKTOR, with focus on the coupling between microstructure and mechanical properties of austempered ductile iron (ADI) and aluminium.

Biography

Jakob Olofsson received a Master of Science degree at Linköping University in January 2005. The studies were within Mechanical Engineering with specialisations in Solid Mechanics and Materials Science. Jakob then worked for five years in the industry, first as mechanical design engineer and design responsible of power turbine parts for gas turbines, and then as design engineer and CAE engineer within the automotive industry. In September 2009 Jakob started his Ph.D. studies at the department of Mechanical Engineering and the research environment Materials and Manufacturing — Casting at the School of Engineering, Jönköping University. 2012 Jakob presented his licentiate thesis, and in 2014 he successfully defended his PhD-thesis entitled “Simulation of Microstructure-based Mechanical behaviour of Cast Components".

SInce June 2014 Jakob serve as an acting assistant professor, and is e.g. responsible for and lecturer in the course Solid Mechanics which is given for bachelor students in Mechanical Engineering from the School of Engineering and bachelor students in Prosthetics and Orthotics from the School of Health Sciences in Jönköping.

Article

Jansson, J., Salomonsson, K., Olofsson, J. (2021). Image-based semi-multiscale finite element analysis using elastic subdomain homogenization Meccanica (Milano. Print). More information
Jansson, J., Olofsson, J., Salomonsson, K. (2020). Simulation-driven product development of cast components with allowance for process-induced material behaviour Journal of Computational Design and Engineering, 7(1), 78-85. More information
Olofsson, J. (2018). Local microstructure-based material performance and damage in design and finite element simulations of cast components , 5(4), 419-426. More information
Olofsson, J., Cenni, R., Cova, M., Bertuzzi, G., Salomonsson, K., Johansson, J. (2018). Multidisciplinary shape optimization of ductile iron castings by considering local microstructure and material behaviour Structural and multidisciplinary optimization (Print), 57(5), 1889-1903. More information
Malakizadi, A., Ghasemi, R., Behring, C., Olofsson, J., Jarfors, A., Nyborg, L., Krajnik, P. (2018). Effects of workpiece microstructure, mechanical properties and machining conditions on tool wear when milling compacted graphite iron Wear, 410-411, 190-201. More information
Thomser, C., Olofsson, J., Gurevitch, V. (2018). Influence of local microstructure on stresses, durability and fracture mechanics of cast iron components Materials Science Forum, 925, 264-271. More information
Jansson, J., Gustafsson, T., Salomonsson, K., Olofsson, J., Johansson, J., Appelsved, P., Palm, M. (2018). An anisotropic non-linear material model for glass fibre reinforced plastics Composite structures, 195, 93-98. More information
Ghasemi, R., Olofsson, J., Jarfors, A., Svensson, I. (2017). Modelling and simulation of local mechanical properties of high silicon solution-strengthened ferritic compacted graphite iron International Journal of Cast Metals Research, 30(3), 125-132. More information
Kasvayee, K., Ghassemali, E., Svensson, I., Olofsson, J., Jarfors, A. (2017). Characterization and modeling of the mechanical behavior of high silicon ductile iron Materials Science & Engineering: A, 708, 159-170. More information
Olofsson, J., Salomonsson, K., Johansson, J., Amouzgar, K. (2017). A methodology for microstructure-based structural optimization of cast and injection moulded parts using knowledge-based design automation Advances in Engineering Software, 109, 44-52. More information
Olofsson, J., Svensson, I., Lava, P., Debruyne, D. (2014). Characterisation and investigation of local variations in mechanical behaviour in cast aluminium using gradient solidification, Digital Image Correlation and finite element simulation Materials & Design, 56, 755-762. More information
Olofsson, J., Svensson, I. (2014). Closed chain simulations of a cast aluminium component - Incorporating casting process simulation and local material characterization into stress-strain simulations ISIJ International, 54(2), 259-265 Tokyo, Japan: The Iron and Steel Institute of Japan . More information
Olofsson, J., Svensson, I. (2013). The effects of local variations in mechanical behaviour – Numerical investigation of a ductile iron component Materials & design, 43, 264-271. More information
Olofsson, J. (2012). Simulation of mechanical behaviour of cast aluminium components. More information
Olofsson, J., Svensson, I. (2012). Incorporating predicted local mechanical behaviour of cast components into finite element simulations Materials & Design, 34, 494-500. More information
Olofsson, J., Larsson, D., Svensson, I. (2011). Effect of Austempering on Plastic Behavior of Some Austempered Ductile Iron Alloys Metallurgical and Materials Transactions. A, 42(13), 3999-4007. More information

Doctoral thesis

Olofsson, J. (2014). Simulation of Microstructure-based Mechanical Behaviour of Cast Components (Doctoral thesis). School of Engineering, Jönköping University More information

Conference paper

Olofsson, J., Bjurenstedt, A., Seifeddine, S. (2019). On the effects of defects and imperfections on tensile toughness of a secondary aluminium alloy. Shape casting : 7th International Symposium Celebrating Prof. John Campbell's 80th Birthday. More information
Olofsson, J., Salomonsson, K., Dahle, A., Mathiesen, R. (2019). Three-dimensional study of nodule clustering and heterogeneous strain localization for tailored material properties in ductile iron. Joint 5th International Conference on Advances in Solidification Processes, ICASP 2019 and 5th International Symposium on Cutting Edge of Computer Simulation of Solidification, Casting and Refining, CSSCR 2019, 17-21 June 2019. More information
Jansson, J., Olofsson, J., Salomonsson, K. (2019). On the use of heterogeneous thermomechanical and thermophysical material properties in finite element analyses of cast components. Joint 5th International Conference on Advances in Solidification Processes, ICASP 2019, and 5th International Symposium on Cutting Edge of Computer Simulation of Solidification, Casting and Refining, CSSCR 2019, 17-21 June 2019. More information
Olofsson, J., Cenni, R., Cova, M., Bertuzzi, G., Salomonsson, K., Johansson, J. (2017). Multidisciplinary shape optimization of ductile iron castings byconsidering local microstructure and material behaviour. 12th World Congress of Structural and Multidisciplinary Optimisation, Braunschweig, 5th – 9th June, 2017.. More information
Salomonsson, K., Olofsson, J. (2017). Analysis of Localized Plastic Strain in Heterogeneous Cast Iron Microstructures Using 3D Finite Element Simulations. Cham: Springer, 4th World Congress on Integrated Computational Materials Engineering, ICME 2017, Ypsilanti, United States, 21-25 May 2017. More information
Olofsson, J., Salomonsson, K., Svensson, I. (2015). Modelling and simulations of ductile iron solidification-induced variations in mechanical behaviour on component and microstructural level. London: Institute of Physics Publishing (IOPP), MCWASP XIV: International Conference on Modeling of Casting, Welding and Advanced Solidification Processes, Awaji island, Hyogo, Japan, 21–26 June, 2015. More information
Svensson, I., Olofsson, J. (2015). Understanding cast iron materials and components - a never ending story. Advances in the Science and Engineering of Casting Solidification: An MPMD Symposium Honoring Doru Michael Stefanescu - TMS 2015 144th Annual Meeting and Exhibition; Walt Disney World, Orlando; United States; 15 March 2015 through 19 March 2015. More information
Olofsson, J., Salomonsson, K., Svensson, I. (2015). The multi-scale closed chain of simulations – incorporating local variations in microstructure into finite element simulations. TMS2015, 144th Annual Meeting and Exhibition, Orlando, FL, USA, March 15-19, 2015. More information
Svensson, I., Olofsson, J. (2014). On microstructure-based mechanical behaviour of a ductile iron component. 10th International Symposium on the Science and Processing of Cast Iron - SPCI10, Mar del Plata, 10-13 November 2014. More information
Jarfors, A., Seifeddine, S., Olofsson, J., Svensson, I. (2013). Critical Description of Defects and Mechanical Behaviour in Casting Process Modelling of Light Metals for Automotive Use. 22nd International Conference on Processing and Fabrication of Advanced Materials (PFAM XXII), Singapore, 18-20 December, 2013. More information
Olofsson, J., Svensson, I. (2012). Casting and stress-strain simulations of a cast ductile iron component using microstructure based mechanical behavior. London: IOP Publishing, MCWASP XIII: International Conference on Modeling of Casting, Welding and Advanced Solidification Processes, Schladming, Austria, 17-22, June 2012. More information

Other publications

Malakizadi, A., Ghasemi, R., Behring, C., Olofsson, J., Jarfors, A., Nyborg, L. . Machinability of solid solution-strengthened compacted graphite iron: Influence of the microstructure, mechanical properties and cutting conditions on tool wear response. More information
Ghasemi, R., Olofsson, J., Jarfors, A., Svensson, I. . Modelling and simulation of local mechanical properties of high silicon solution-strengthened ferritic CGI materials. More information
Jansson, J., Salomonsson, K., Olofsson, J. . Voxel-based semi-multiscale finite element analysis using elastic subdomain homogenization. More information

Licentiate thesis

Olofsson, J. (2012). Microstructure-based Mechanical Behaviour in Structural Analyses of Cast Components (Licentiate thesis, Jönköping: School of Engineering, Jönköping University). More information