Study In Residual Stress Into Fatigue Analysis Of Aluminum Cylinder Head

Residual stress is a important factor for obtain the desirable design (such as cylinder head). general approach is to incorporate residual stresses into durability analysis by simply conforming the values by means of a fatigue postprocessor. residual stresses elevate the mean stress value according to whether stress states are tensile orcompressive. however, it is thought that uncoupling two analyses may lead to seduce results. instead, a singleanalysis should combine residual stress and thermo mechanical analysis steps, one after the other. this is a comparative study for these two approaches and shows that assumption of a virgin material at the beginning of thermo mechanical analysis is not always valid though two approaches agrees well with each other for moderate loading levels.

Keywords:

Residual Stress , Fatigue , Aluminum , Cylinder Head