Abstract
Based on low cycle fatigue (LCF) experiment data of SLM Ti-6Al-4V, a comprehensive finite element model of the combined isotropic and kinematic hardening and continuous damage for SLM Ti-6Al-4V is established. The simulation results of the stress-strain hysteresis loop and the LCF life are in good agreement with the experiment results under different strain amplitude levels. Based on the reliable achieved model of SLM Ti-6Al-4 V, the finite element model of the Gyroid and Diamond lattice structure is established for LCF analysis. It is found that the Diamond lattice structure has higher LCF resistance.
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