|About this Abstract
||2011 TMS Annual Meeting & Exhibition
||Aluminum Alloys: Fabrication, Characterization and Applications
||Micromechanical Simulations for Fatigue Damage Incubation at Debonded Particles Using Cohesive Zone Model
||Tong Li, Yibin Xue
|On-Site Speaker (Planned)
Fatigue damage initiates at debonded micrometer-sized intermetallic particles for some high strength Al alloys in the high cycle fatigue regime. Cohesive zone model is implemented to investigate the interfacial debonding and propagation under cyclic loads. Representative Volume Elements (RVE) are set to position the intermetallic particle at different spatial locations regarding the boundary of the RVEs to account for the random distribution of the particle in the alloys. Maximum plastic shear strain range (MPSS) and Fatemi-Socie (FS) parameter for multiaxial fatigue are introduced as nonlocal damage parameters to evaluate the severity of the damage level of RVEs and loading sets. This set of the simulations will be compared with simulation results on fatigue damage incubated at the fractured particles. This effort completes the fatigue damage incubation evaluation for wrought Al alloys.
||Planned: A print-only volume