蠕变柔度与应力松弛相互转换的计算机程序

IF 3 2区工程技术 Q2 MECHANICS

Journal of Rheology Pub Date : 2023-07-20 DOI:10.1122/8.0000695

S. Shanbhag

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引用次数: 0

摘要

线性粘弹性函数的数值相互转换是流变学中的一个重要问题。本文主要研究蠕变柔度（J）与松弛模量（G）之间的卷积关系。离散谱或Prony级数用于描述相互转换的源（G或J）和目标（J或G）。之前开发的数值模板[Loy等人，J.Rheol.59（5），1261（2015）]被修改为绕过奇点。它是作为一个名为PSI（Prony系列相互转换）的开源计算机程序发布的。PSI在包括粘弹性固体和液体在内的多种材料上进行测试，并用于→J和J→G相互转换。对于时间跨度超过20年的输入数据，它是快速且数值稳定的。它填补了现有软件领域中线性粘弹性函数转换的空白。

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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A computer program for interconversion between creep compliance and stress relaxation

Numerical interconversion of linear viscoelastic functions is an important problem in rheology. This work focuses on interconversion between creep compliance (J) and relaxation modulus (G) via the convolution relation. A discrete spectrum or Prony series is used to describe both the source (G or J) and the target (J or G) of the interconversion. A previously developed numerical template [Loy et al.,J. Rheol.59(5), 1261 (2015)] is modified to bypass singularities. It is released as an open-source computer program called PSI (Prony series interconversion). PSI is tested on a variety of materials including viscoelastic solids and liquids and used for both G→J and J→G interconversions. It is fast and numerically stable for input data that span over 20 decades in time. It fills a gap in the existing software landscape for conversion of linear viscoelastic functions.

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来源期刊

Journal of Rheology 物理-力学

CiteScore

6.60

自引率

12.10%

发文量

100

审稿时长

1 months

期刊介绍： The Journal of Rheology, formerly the Transactions of The Society of Rheology, is published six times per year by The Society of Rheology, a member society of the American Institute of Physics, through AIP Publishing. It provides in-depth interdisciplinary coverage of theoretical and experimental issues drawn from industry and academia. The Journal of Rheology is published for professionals and students in chemistry, physics, engineering, material science, and mathematics.