The requirement for increased power and reduced emission and fuel consumption levels for diesel engines has created very stringent demands on the cylinder head design. In current engine development programs it is often observed that the limiting design factor is given by the thermal mechanical fatigue strength of the cylinder head. Design iterations resulting from durability testing are often necessary due to the lack of adequate simulation techniques for prediction thermal mechanical fatigue (TMF) failure.A complete lifetime simulation process is presented in this paper with emphasis on a newly developed material model for describing the constitutive behavior of cast iron (i.e. gray cast iron and compacted graphite iron) under thermal cycling. The material model formulation is based on a continuum-damage-mechanics (CDM) approach in order to account for the tension / compression anomaly of cast iron. Different fatigue life models are discussed for the lifetime prediction and an example of a TMF life simulation for a medium duty cylinder head is shown and the implications of design modifications on the TMF life are discussed.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Thermal Mechanical Fatigue Simulation of Cast iron Cylinder Heads


    Additional title:

    Sae Technical Papers


    Contributors:
    Jelatancev, A. (author) / Langmayr, F. (author) / Zieher*, F. (author) / Wieser, K. (author)

    Conference:

    SAE 2005 World Congress & Exhibition ; 2005



    Publication date :

    2005-04-11




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Thermal mechanical fatigue simulation of cast iron cylinder heads

    Zieher,F. / Langmayr,F. / Jelatancev,A. et al. | Automotive engineering | 2005


    Thermal Fatigue Analysis of Cast Aluminum Cylinder Heads

    Tang, C. / Engler-Pinto, C.C. / Sehitoglu, H. et al. | SAE Technical Papers | 2002


    Thermal fatigue analysis of cast aluminum cylinder heads

    Su,X. / Zubeck,M. / Lasecki,J. et al. | Automotive engineering | 2002


    Thermal Fatigue Analysis of Cast Aluminum Cylinder Heads

    Su, X. / Zubeck, M. / Lasecki, J. et al. | British Library Conference Proceedings | 2002


    Gray cast iron cylinder head thermal mechanical fatigue analysis

    Li,J. / Wang,P. / Cui,X. et al. | Automotive engineering | 2012