Analytical model for predicting induced-stress distributions in polycrystalline materials

IF 7.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences Pub Date : 2025-06-20 DOI:10.1016/j.ijmecsci.2025.110470

T. Mede, S. El Shawish

引用次数: 0

Abstract

A simple micromechanical model of polycrystalline materials is proposed, which enables us to swiftly produce grain-boundary-stress distributions induced by the uniform external loading (in the elastic strain regime). Such statistical knowledge of local stresses is a necessary prerequisite to assess the probability for intergranular cracking initiation . Model predictions are verified through finite element calculations for various loading configurations, material properties, and grain-boundary types specified by the properties of a bicrystal pair of grains enclosing the grain boundary.

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预测多晶材料中诱导应力分布的解析模型

提出了一种简单的多晶材料微观力学模型，该模型使我们能够快速生成均匀外载荷（弹性应变状态下）引起的晶界应力分布。这种局部应力的统计知识是评估晶间裂纹起裂概率的必要前提。模型预测通过有限元计算来验证各种加载配置、材料特性和由包围晶界的双晶对晶粒特性指定的晶界类型。

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

International Journal of Mechanical Sciences 工程技术-工程：机械

CiteScore

12.80

自引率

17.80%

发文量

769

审稿时长

19 days

期刊介绍： The International Journal of Mechanical Sciences (IJMS) serves as a global platform for the publication and dissemination of original research that contributes to a deeper scientific understanding of the fundamental disciplines within mechanical, civil, and material engineering. The primary focus of IJMS is to showcase innovative and ground-breaking work that utilizes analytical and computational modeling techniques, such as Finite Element Method (FEM), Boundary Element Method (BEM), and mesh-free methods, among others. These modeling methods are applied to diverse fields including rigid-body mechanics (e.g., dynamics, vibration, stability), structural mechanics, metal forming, advanced materials (e.g., metals, composites, cellular, smart) behavior and applications, impact mechanics, strain localization, and other nonlinear effects (e.g., large deflections, plasticity, fracture). Additionally, IJMS covers the realms of fluid mechanics (both external and internal flows), tribology, thermodynamics, and materials processing. These subjects collectively form the core of the journal's content. In summary, IJMS provides a prestigious platform for researchers to present their original contributions, shedding light on analytical and computational modeling methods in various areas of mechanical engineering, as well as exploring the behavior and application of advanced materials, fluid mechanics, thermodynamics, and materials processing.