Thermal Stress and Fatigue Analysis of Exhaust Manifold

Thermal Stress and Fatigue Analysis of Exhaust Manifold

In this study, we investigated the reliability assessment of exhaust manifold used in thermomechanical condition. Overlay model proposed by Besseling[1] was modified to consider the strain range dependence on elastic limit. By combining geometrical relation in hysteresis loop and temperature depende...

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Veröffentlicht in:Key engineering materials 2004-01, Vol.261-263, p.1203-1208
Hauptverfasser: Lee, Keum Oh, Lee, Soon Bok, Park, K.H., Yoon, Sam Son
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Lee, Soon Bok
Park, K.H.
Yoon, Sam Son
description In this study, we investigated the reliability assessment of exhaust manifold used in thermomechanical condition. Overlay model proposed by Besseling[1] was modified to consider the strain range dependence on elastic limit. By combining geometrical relation in hysteresis loop and temperature dependence of elastic limit with isothermal overlay model, temperature dependent cyclic plasticity model was proposed. Continuous damage model based on isothermal fatigue data was generalized for non-isothermal condition. Finite element analysis and life prediction of exhaust manifold were performed under severe operating conditions.
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