TY - JOUR
T1 - Acoustic softening in metals during ultrasonic assisted deformation via CP-FEM
AU - Siddiqi, Hira Fatima
AU - El Sayed, Tamer S.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was fully funded by the KAUST baseline fund.
PY - 2011/1
Y1 - 2011/1
N2 - In this paper, a phenomenological crystal plasticity model is modified to account for acoustic (ultrasonic) softening effects based on the level of ultrasonic intensity supplied to single and polycrystalline metals. The material parameters are identified using the inverse modeling approach by interfacing the crystal plasticity model with an optimization tool. The proposed model is validated and verified by comparing the microstructure evolution with experimental EBSD results reported in the literature. The model is able to capture the ultrasonic softening effect and the results show that as the ultrasonic intensity increases, the plastic deformation also increases. Differences in the stress-strain response are explained based on the slip system orientation tensor (Schmidt factors) which depends upon the crystal orientation. © 2010 Elsevier B.V. All rights reserved.
AB - In this paper, a phenomenological crystal plasticity model is modified to account for acoustic (ultrasonic) softening effects based on the level of ultrasonic intensity supplied to single and polycrystalline metals. The material parameters are identified using the inverse modeling approach by interfacing the crystal plasticity model with an optimization tool. The proposed model is validated and verified by comparing the microstructure evolution with experimental EBSD results reported in the literature. The model is able to capture the ultrasonic softening effect and the results show that as the ultrasonic intensity increases, the plastic deformation also increases. Differences in the stress-strain response are explained based on the slip system orientation tensor (Schmidt factors) which depends upon the crystal orientation. © 2010 Elsevier B.V. All rights reserved.
UR - http://hdl.handle.net/10754/594143
UR - https://linkinghub.elsevier.com/retrieve/pii/S0167577X10008931
UR - http://www.scopus.com/inward/record.url?scp=78049493481&partnerID=8YFLogxK
U2 - 10.1016/j.matlet.2010.10.031
DO - 10.1016/j.matlet.2010.10.031
M3 - Article
SN - 0167-577X
VL - 65
SP - 356
EP - 359
JO - Materials Letters
JF - Materials Letters
IS - 2
ER -