期刊
COMPUTATIONAL MECHANICS
卷 70, 期 3, 页码 639-659出版社
SPRINGER
DOI: 10.1007/s00466-022-02186-7
关键词
Polycrystalline microstructures; Crystal plasticity; Multiscale methods; Microstructure modeling; Crystallographic texture
资金
- German Research Foundation (DFG) within the International Research Training Group Integrated engineering of continuous-discontinuous long fiber reinforced polymer structures [GRK 2078]
- Priority Program SPP2013 Targeted Use of Forming Induced Residual Stresses in Metal Components [Bo 1466/14-2]
This work focuses on synthetic microstructure models of polycrystalline materials. A novel method is introduced to prescribe the orientations of individual grains based on tensorial Fourier coefficients. The proposed method allows for the determination of representative orientations for digital polycrystalline microstructures. The method is compared to established algorithms in terms of the material's linear elastic and non-linear plastic behavior.
This work is concerned with synthetic microstructure models of polycrystalline materials. Once a representation of the microstructure is generated, the individual grains need to be furnished with suitable crystal orientations, matching a specific crystal orientation distribution. We introduce a novel method for this task, which permits to prescribe the orientations based on tensorial Fourier coefficients. This compact representation gives rise to the texture coefficient optimization for prescribing orientations method, enabling the determination of representative orientations for digital polycrystalline microstructures. We compare the proposed method to established and dedicated algorithms in terms of the linear elastic as well as the non-linear plastic behavior of a polycrystalline material.
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