Henrik Tersing

1. Simulation of manufacturing chain of a titanium aerospace component with experimental validation

   Tersing, H.; Lorentzon, J.; Francois, A.; Lundbäck, A.; Babu, B.; Barboza, J.; Bäcker, V.; Lindgren, L.-E.

   Finite Elements in Analysis and Design 51, 10–21 · 2012 · doi:10.1016/j.finel.2011.10.002

2. A two stage approach for the validation of welding and heat treatment models used in product development

   Berglund, D.; Tersing, H.

   Science and Technology of Welding and Joining 10, 653–665 · 2005 · doi:10.1179/174329305x57464

3. Comparison of an axisymmetric and a three-dimensional model for welding and stress relief heat treatment

   Tersing, H.

   AIP Conference Proceedings 712, 1230–1235 · 2004 · doi:10.1063/1.1766697

4. Comparison of plastic, viscoplastic, and creep models when modelling welding and stress relief heat treatment

   Tersing, H.; Berglund, D.

   Computer Methods in Applied Mechanics and Engineering 192, 5189–5208 · 2003 · doi:10.1016/j.cma.2003.07.010

5. Simulation of welding and stress relief heat treatment of an aero engine component

   Berglund, D.; Tersing, H.; Runnemalm, H.

   Finite Elements in Analysis and Design 39, 865–881 · 2003 · doi:10.1016/s0168-874x(02)00136-1

Conference contributions

1. Virtual Process Chain for Recycled Steel: Effect of Chemical Composition on Forming, Joining, and Crash Performance

   Berglund, D.; Babu, B.; Tersing, H.

   CHS² · 2026

   +−Abstract

   The increasing use of recycled electric-arc-furnace (EAF) steels in automotive body structures introduces variability in chemical composition, particularly in elements such as Mn, Si, Cr, Cu, and Sn. These compositional fluctuations directly affect phase transformations during hot stamping, weld quality during resistance spot welding (RSW), and ultimately crashworthiness. Within the EU-funded CiSMA project, Aerobase Innovations AB has developed an integrated virtual process chain using LS-Dyna to evaluate the effect of chemical composition variability on the complete manufacturing and performance sequence of press-hardened steel components: hot forming with tailored properties (soft-zones), resistance spot welding, and axial crushing. The demonstrator component is a hat profile in 22MnB5 joined with a cover plate in DP780 by RSW. The PHASES model, a composition-dependent phase evolution model developed by Aerobase, predicts microstructure evolution and resulting mechanical properties throughout the process chain (www.copilot.aerobase.se). Coupled thermo-mechanical forming simulations capture the effect of chemistry on phase fractions and soft-zone properties, while electro-thermo-mechanical-metallurgical RSW simulations predict weld nugget and heat-affected zone (HAZ) characteristics. The complete material state is then transferred to the axial crush model. This work presents simulation results for multiple chemical compositions, comparing forming outcomes, weld characteristics, and force-displacement responses in axial crush, thereby quantifying the sensitivity of crash performance to material variability in recycled steels.

   Abstract PDF↗