Analysis of an atomistic model for anti-plane fracture

Analysis of an atomistic model for anti-plane fracture
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DOI:
10.1142/s0218202519500520
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发表时间:
2018-10
影响因子:
3.5
通讯作者:
Maciej Buze;T. Hudson;C. Ortner
Maciej Buze;T. Hudson;C. Ortner
中科院分区:
数学1区
文献类型:
--
作者:
Maciej Buze;T. Hudson;C. Ortner

文献摘要

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在原子间相互作用对势的作用下,我们建立了正方形晶格上的反平面裂纹缺陷模型。特别地,我们建立了小加载参数的解的存在性、局部唯一性和稳定性,并进一步证明了定性的尖锐远场衰减估计。后者需要建立相应的格点格林函数的衰减估计,这是独立的。
We develop a model for an anti-plane crack defect posed on a square lattice under an interatomic pair-potential with nearest-neighbour interactions. In particular, we establish existence, local uniqueness and stability of solutions for small loading parameters and further prove qualitatively sharp far-field decay estimates. The latter requires establishing decay estimates for the corresponding lattice Green’s function, which are of independent interest.