About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing Modeling, Simulation, and Machine Learning: Microstructure, Mechanics, and Process
|
| Presentation Title |
A Crystal Plasticity Finite Element Approach to Understand Effect of Acoustoplasticity on FCC and BCC Structures |
| Author(s) |
Upama Biswas Tonny, Chang Yang, Liming Xiong, Sunil K. Chakrapani |
| On-Site Speaker (Planned) |
Upama Biswas Tonny |
| Abstract Scope |
The fundamental mechanism behind ultrasonic additive manufacturing (UAM) is acoustoplasticity, which can be defined as plasticity resulting from high intensity ultrasonic waves. Previously, researchers have explored the concepts of stress superposition, thermal softening, and frictional effect between sonotrode and workpieces to model acoustic softening. However, the influence of microstructure including phase and texture on acoustic softening is yet to be explored properly. This work presents a crystal plasticity model to capture softening in FCC and BCC structures. A modified crystal plasticity model with a softening parameter (Usoft) was developed for the ultrasonic assisted slip resistance and the slip interaction. The effect of Usoft on the softening behavior of FCC and BCC was studied. Additionally, the effect of crystal orientation and texture on Usoft was also carried out. These models help capture the softening effects, which will be useful in process parameter development in the future. |