Shifted Inverse Power Method for Computing the Smallest M-Eigenvalue of a Fourth-Order Partially Symmetric Tensor

Jianxing Zhao (), Pin Liu () and Caili Sang ()
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Jianxing Zhao: Guizhou Minzu University
Pin Liu: Guizhou Minzu University
Caili Sang: Guizhou Minzu University

Journal of Optimization Theory and Applications, 2024, vol. 200, issue 3, No 9, 1159 pages

Abstract: Abstract The strong ellipticity condition (abbr. SE-condition) of the displacement equations of equilibrium for general nonlinearly elastic materials plays an important role in nonlinear elasticity and materials. Qi et al. (Front Math China 4(2):349–364, 2009) pointed out that the SE-condition of the displacement equations of equilibrium can be equivalently transformed into the SE-condition of a fourth-order real partially symmetric tensor $${\mathcal {A}}$$ A , and that the SE-condition of $${\mathcal {A}}$$ A holds if and only if the smallest M-eigenvalue of $${\mathcal {A}}$$ A is positive. In order to judge the strong ellipticity of $${\mathcal {A}}$$ A , we propose a shifted inverse power method for computing the smallest M-eigenvalue of $${\mathcal {A}}$$ A and give its convergence analysis. And then, we borrow and fine-tune an existing initialization strategy to make the sequence generated by the shifted inverse power method rapidly converge to a good approximation of the smallest M-eigenvalue of $${\mathcal {A}}$$ A . Finally, we by numerical examples illustrate the effectiveness of the proposed method in computing the smallest M-eigenvalue of $${\mathcal {A}}$$ A and judging the SE-condition of the displacement equations of equilibrium.

Keywords: Displacement equations of equilibrium; Partially symmetric tensors; Strong ellipticity condition; M-eigenvalues; Shifted inverse power method; 15A18; 15A69; 74B20 (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s10957-023-02369-z

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