Influence functions for accurate representation of bond deformation in discrete modeling

IF 1.9 4区工程技术 Q3 MECHANICS

Mechanics Research Communications Pub Date : 2023-11-23 DOI:10.1016/j.mechrescom.2023.104220

Hailong Chen , Xuan Hu

引用次数: 0

Abstract

Continuum-like nonlocal deformation gradients have been constructed based on discrete simulation results. In this paper, the accuracy of the nonlocal deformation gradient based on different influence functions is examined for both representing material point deformation and mapping bonds. A new class of parameterized influence functions that accounts for both bond relative length and angle (with respect to a target bond) is proposed. Numerical example shows great accuracy of the nonlocal deformation gradient using the proposed influence functions in both representing material point deformation and mapping bonds. It is concluded that the proposed influence functions can be used to accurately capture bond-level continuum-like measures.

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离散建模中精确表示粘结变形的影响函数

基于离散模拟结果，构造了类连续非局部变形梯度。本文研究了基于不同影响函数的非局部变形梯度在表示质点变形和映射键时的精度。提出了一类新的参数化影响函数，它既考虑了键的相对长度，也考虑了键的相对角度。数值算例表明，本文提出的影响函数在表示质点变形和映射键时具有较高的非局部变形梯度精度。结论是，所提出的影响函数可用于准确捕获键级类连续测度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Mechanics Research Communications 物理-力学

CiteScore

4.10

自引率

4.20%

发文量

114

审稿时长

9 months

期刊介绍： Mechanics Research Communications publishes, as rapidly as possible, peer-reviewed manuscripts of high standards but restricted length. It aims to provide: • a fast means of communication • an exchange of ideas among workers in mechanics • an effective method of bringing new results quickly to the public • an informal vehicle for the discussion • of ideas that may still be in the formative stages The field of Mechanics will be understood to encompass the behavior of continua, fluids, solids, particles and their mixtures. Submissions must contain a strong, novel contribution to the field of mechanics, and ideally should be focused on current issues in the field involving theoretical, experimental and/or applied research, preferably within the broad expertise encompassed by the Board of Associate Editors. Deviations from these areas should be discussed in advance with the Editor-in-Chief.