Rate dependent but time independent plasticity formulation with application to sand

IF 1.9 4区工程技术 Q3 MECHANICS

Mechanics Research Communications Pub Date : 2024-01-01 DOI:10.1016/j.mechrescom.2023.104242

Yannis F. Dafalias , Majid T. Manzari

引用次数: 0

Abstract

A novel rate dependent but time independent plasticity constitutive framework is proposed by rendering the flow rule and the internal variables evolution equations, appropriate functions of the strain rate, while maintaining a rate independent yield surface. This new framework is applied to a full-fledged rate independent and Critical State Theory compatible constitutive model for sands, transforming it into a rate dependent to address the cases where rate dependence is the main interest in comparison with creep and relaxation of secondary importance and manifestation. A qualitative comparison is made with available rate dependent data for sands.

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与速率有关但与时间无关的塑性配方，适用于砂土

通过使流动规则和内部变量演变方程成为应变速率的适当函数，同时保持与速率无关的屈服面，提出了一种与速率相关但与时间无关的新型塑性构造框架。这一新框架适用于与速率无关且与临界状态理论兼容的完整砂构成模型，将其转化为速率相关模型，以解决速率相关性是主要关注点，而蠕变和松弛则是次要关注点和表现形式的情况。与现有的砂的速率相关数据进行了定性比较。

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.