A bridge on Lomnitz type creep laws via generalized fractional calculus

A bridge on Lomnitz type creep laws via generalized fractional calculus
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通过广义分数阶微积分构建 Lomnitz 型蠕变定律的桥梁

DOI:
10.1016/j.apm.2022.12.010
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发表时间:
2022-12
影响因子:
5
通讯作者:
Jing Li
Jing Li
中科院分区:
工程技术2区
文献类型:
--
作者:
Li Ma;Jing Li

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本文致力于实现分散的Lomnitz型蠕变规律的统一。因此,定义了一种新的广义分数阶微积分,即类katugampola分数阶微积分,并将其作为一种有效的工具,同时附带了一些基本的性质。利用粘弹性遗传理论和Volterra积分方程方法,建立了具有记忆效应和时变黏度的相容应力-应变关系,得到了统一的Lomnitz蠕变定律。然后,通过推理和数值模拟,对从统一Lomnitz蠕变定律继承的蠕变函数和松弛函数进行了对比分析。此外,借助于修正的麦克斯韦型弹簧-阻尼器模型,给出了这种统一的Lomnitz蠕变定律的物理解释。本文的研究结果可以提供火成岩蠕变的完整表征,以满足某些特殊的理论和实验要求。
This paper is dedicated to achieving the unification of the scattered Lomnitz type creep laws. Thereupon, a novel generalized fractional calculus, that is, Katugampola-like fractional calculus is well-defined and employed as an effective tool, along with some fundamental qualities as by-products. By virtue of the hereditary theory of viscoelasticity and Volterra integral equation method, a compatible stress-strain relation with memory effects and time-varying viscosity established results in a unified Lomnitz creep law. Then, a comparative analysis on the creep function and relaxation function inherited from the unified Lomnitz creep law is exhibited via reasoning and numerical simulation. Besides, physical interpretation of such unified Lomnitz creep law is also provided with the aid of the modified spring-dashpot model of Maxwell type. Results carried out in this paper might provide a full characterization of the creep of igneous rocks to meet some special theoretical and experimental requirements.
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