A strain-gradient elastoplastic model: formulation, mixed finite element implementation and applications

IF 15.4 1区材料科学 Q1 ENGINEERING, MECHANICAL

International Journal of Plasticity Pub Date : 2026-08-29 DOI:10.1016/j.ijplas.2026.104810

Lidiia Nazarenko, Aleksandr Yu. Chirkov, Holm Altenbach

引用次数: 0

Abstract

A simplified strain-gradient elastoplastic model is developed within the framework of small-strain kinematics to describe size-dependent mechanical behaviour at the micro- and sub-micrometre scales. The formulation extends classical J2 plasticity by incorporating both elastic and plastic strain gradients together with an intrinsic material length-scale parameter.

查看原文本刊更多论文

应变梯度弹塑性模型：公式、混合有限元实现及应用

在小应变运动学的框架内，建立了一个简化的应变梯度弹塑性模型来描述微观和亚微米尺度上的尺寸相关力学行为。该公式通过结合弹性和塑性应变梯度以及固有的材料长度尺度参数扩展了经典的J2塑性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Plasticity 工程技术-材料科学：综合

CiteScore

15.30

自引率

26.50%

发文量

256

审稿时长

46 days

期刊介绍： International Journal of Plasticity aims to present original research encompassing all facets of plastic deformation, damage, and fracture behavior in both isotropic and anisotropic solids. This includes exploring the thermodynamics of plasticity and fracture, continuum theory, and macroscopic as well as microscopic phenomena. Topics of interest span the plastic behavior of single crystals and polycrystalline metals, ceramics, rocks, soils, composites, nanocrystalline and microelectronics materials, shape memory alloys, ferroelectric ceramics, thin films, and polymers. Additionally, the journal covers plasticity aspects of failure and fracture mechanics. Contributions involving significant experimental, numerical, or theoretical advancements that enhance the understanding of the plastic behavior of solids are particularly valued. Papers addressing the modeling of finite nonlinear elastic deformation, bearing similarities to the modeling of plastic deformation, are also welcomed.