Dissertation title: Fatigue Fracture Simulation with the Phase Field Model and Its Acceleration

Date: 2024/05/06 - 2024/05/06

Dissertation Title: Fatigue Fracture Simulation with the Phase Field Model and Its Acceleration

Speaker: Shuo Yang

Time: 14:00 - 16:00, May 6, 2024 (Beijing Time)

Location: 414B, JI Long Bin Building


Critical components of engineering structures, such as aircraft engines and vehicle chassis, may develop fatigue cracks under cyclic load, leading to casualties and significant economic losses. Therefore, it is essential to develop numerical methods that are accurate and efficient for fatigue crack prediction. The phase field model for fracture can simulate various complicated crack behaviors throughout the fatigue process, but such simulation is associated with a relatively high computational cost. In this dissertation, firstly, a ductile fatigue phase field model is developed. Within time homogenization framework, the present study introduces an acceleration scheme for simulating fatigue crack behaviors with the phase field model. Building on the acceleration scheme and the proposed ductile fatigue model, an acceleration scheme for the ductile fatigue crack growth is developed. Finally, a series of numerical experiments validate the effectiveness of this acceleration algorithm.


Shuo Yang received the B.S. degree in naval architecture and ocean engineering from Harbin Institute of Technology at Weihai in 2019. She is currently a Ph.D. candidate at the UM-SJTU Joint Institute, supervised by Prof. Yongxing Shen. Her current research interests include phase field, fatigue fracture, acceleration schemes.