Development of analysis models for thermomechanical fatigue
Research Project, 2013 – 2018

In order to reduce fuel consumption the current trend is towards engines with decreased displacement and high specific power which increases the thermal load on the material. This increases the need of methods to design the base engine with respect to thermo mechanical fatigue, (TMF). In order to build a better understanding of which methods are suitable for use in the specific case fatigue of cylinder heads a project to develop evaluation methods and select and calibrate constitutive models for the aluminum alloy used in today's cylinder heads is proposed. This is done by material testing, where basic material data at room and elevated temperatures and more model-specific parameters are developed. The thermo-mechanical behavior of the material is then investigated in a test cycle that mimics the loading cycle that the material in the critical areas of the cylinder head undergoes in today's engine testing. Finally the selected models are verified against results from engine testing.


Christer Persson (contact)

Chalmers, Industrial and Materials Science, Engineering Materials

Johan Ahlström

Chalmers, Industrial and Materials Science, Engineering Materials


Volvo Cars

Göteborg, Sweden


Swedish Energy Agency

Project ID: 37807-1
Funding Chalmers participation during 2013–2018

Related Areas of Advance and Infrastructure

Sustainable development

Driving Forces

Materials Science

Areas of Advance


More information

Project Web Page at Chalmers

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