help for applying the cohesive model to predict the fatigue lift for bimaterial system with perfect interfaces
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Dear fellows,
We will predict the fatigue life for the metal-ceramic multilyer devices subjected to cyclic load in service . Residual stresses are induced during high- temperature process in the devices, which were known in the previous work. Considering the bimaterial interface as a weak plane, no geometric discontinuity are taken into account, i.e., perfect interfaces are considered.
How to construct the cohesive interface model (no initial crack)?
appreciate your advice in advance.