Linear Peridynamics Fourier Multipliers and Eigenvalues
Linear Peridynamics Fourier Multipliers and Eigenvalues
复制标题
线性近场动力学傅里叶乘子和特征值
DOI:
10.1007/s42102-023-00102-y
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Albin, Nathan
中科院分区:
文献类型:
--
作者:
Alali, Bacim;Albin, Nathan
A characterization for the Fourier multipliers and eigenvalues of linear peridynamic operators is provided. The analysis is presented for state-based peridynamic operators for isotropic homogeneous media in any spatial dimension. We provide explicit formulas for the eigenvalues in terms of the space dimension, the nonlocal parameters, and the material properties. The approach we follow is based on the Fourier multiplier analysis developed by Alali and Albin (Applicable Analysis 2526–2546, ). The Fourier multipliers of linear peridynamic operators are second-order tensor fields, which are given through integral representations. It is shown that the eigenvalues of the peridynamic operators can be derived directly from the eigenvalues of the Fourier multiplier tensors. We reveal a simple structure for the Fourier multipliers in terms of hypergeometric functions, which allows for providing integral representations as well as hypergeometric representations of the eigenvalues. These representations are utilized to show the convergence of the eigenvalues of linear peridynamics to the eigenvalues of the Navier operator of linear elasticity in the limit of vanishing nonlocality. Moreover, the hypergeometric representation of the eigenvalues is utilized to compute the spectrum of linear peridynamic operators.
DOI:
10.1016/j.cma.2020.113633
发表时间:
2021-03
影响因子:
7.2
作者:
S. Jafarzadeh;Longzhen Wang;Adam Larios;F. Bobaru
通讯作者:
S. Jafarzadeh;Longzhen Wang;Adam Larios;F. Bobaru
DOI:
10.2139/ssrn.4384323
发表时间:
2022
期刊:
SSRN Electronic Journal
影响因子:
--
作者:
J. Scott
通讯作者:
J. Scott
影响因子:
1.1
作者:
Bacim Alali;Nathan Albin
通讯作者:
Nathan Albin