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Acoustic softening in metals during ultrasonic assisted deformation via CP-FEM

Amir, Muhammad and El Sayed, Tamer (2011) Acoustic softening in metals during ultrasonic assisted deformation via CP-FEM. Materials Letters, 65. pp. 356-359. ISSN 0167-577X

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Abstract

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.

Item type: Article
ID code: 37313
Keywords: acoustic softening, ultrasonic assisted deformation , welding, ultrasonic softening, Engineering design, Mechanics of Materials, Materials Science(all), Mechanical Engineering, Condensed Matter Physics
Subjects: Technology > Engineering (General). Civil engineering (General) > Engineering design
Department: Faculty of Engineering > Design, Manufacture and Engineering Management
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 03 Feb 2012 11:48
    Last modified: 05 Sep 2014 14:48
    URI: http://strathprints.strath.ac.uk/id/eprint/37313

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