Abstract
The explicit representations for tensorial Fourier expansion of 3-D crystal orientation distribution functions (CODFs) are established. In comparison with that the coefficients in the mth term of the Fourier expansion of a 3-D ODF make up just a single irreducible mth-order tensor, the coefficients in the mth term of the Fourier expansion of a3-D CODF constitute generally so many as2m+1 irreducible mth-order tensors. Therefore, the restricted forms of tensorial Fourier expansions of3-D CODFs imposed by various micro- and macro-scopic symmetries are further established, and it is shown that in most cases of symmetry the restricted forms of tensorial Fourier expansions of3-D CODFs contain remarkably reduced numbers of mth-order irreducible tensors than the number2m+1. These results are based on the restricted forms of irreducible tensors imposed by various point-group symmetries, which are also thoroughly investigated in the present part in both2- and3-D spaces.
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Paper from Zheng Quan-shui, Member of Editorial Committee, AMM
Foundation item: the National Natural Science Foundation of China (19525207, 19891180); the Y-D Huo Education Foundation
Biography: Zheng Quan-shui (1961≈)
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Quan-shui, Z., Yi-bin, F. Orientation distribution functions for microstructures of heterogeneous materials (II)—Crystal distribution functions and irreducible tensors restricted by various material symmetries. Appl Math Mech 22, 885–903 (2001). https://doi.org/10.1007/BF02436388
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DOI: https://doi.org/10.1007/BF02436388
Key words
- crystal orientation distribution function
- irreducible tensor
- Fourier expansion
- microstructure
- material symmetry