Elasto-viscoplastic finite element analysis for strain localization problems with embedded localized softening bands

LIU Jin-long; CHEN Sheng-hong; XIE Jia-bi; BAO Yi-zhou

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Elasto-viscoplastic finite element analysis for strain localization problems with embedded localized softening bands

更新时间：2026-06-25

- Elasto-viscoplastic finite element analysis for strain localization problems with embedded localized softening bands
- Vol. 29, Issue 3, (2008)
- 作者机构：
  
  1. 广州市建设科技委员会办公室,广州,510030
  2. 武汉大学水资源与水电工程科学国家重点实验室,武汉,430072
  3. 中国水利水电科学研究院防洪减灾研究所,北京,100038
  4. 广州市中心区交通项目领导小组办公室,广州,510030
- 作者简介：
- 基金信息：
- DOI：
  CLC： TB125
- Online First：19 July 2013，
  
  Published：2008
- 稿件说明：
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LIU Jin-long, CHEN Sheng-hong, XIE Jia-bi, et al. Elasto-viscoplastic finite element analysis for strain localization problems with embedded localized softening bands[J]. 2008, 29(3).
DOI：

LIU Jin-long, CHEN Sheng-hong, XIE Jia-bi, et al. Elasto-viscoplastic finite element analysis for strain localization problems with embedded localized softening bands[J]. 2008, 29(3). DOI：

摘要

针对岩土介质结构在破坏过程中局部化变形的问题，结合位移不连续的思想，提出内嵌局部软化带模型来捕捉结构中的局部化带。通过虚功原理建立了含局部化带影响的弹黏塑性的有限元计算模式，其中分叉理论作为局部化判断条件。模型将局部化带的形成视为一个黏塑性屈服流动过程，从而能够连续地描述局部化变形前后的力学性质。特点是计算量小、物理意义明确，可以方便地整合到传统有限元分析程序中。算例表明，计算模型是合理和有效的。

Abstract

To simulate the strain localization in the failure process of geomaterials

a model with embedded localized softening bands incorporating into the idea of strong discontinuities is presented. Based on the virtual work principle

the equilibrium equations of FEM considering the effect of localization deformation are established; and the bifurcation theory is adopted as the criterion of onset of strain localization. The model can describe the mechanism of pre-localization and post-localization continuously by regarding localization as a viscoplastic flow procedure. The main advantages of this algorithm are that the model needs little amount of computation

and it has exact physical meaning compared with other methods. Furthermore

it can be incorporated into the conventional finite element analysis procedure. Numerical results have been carried out to show the validity of the model.

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Related Author

CHEN Long

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ZHANG Ming-long

XU Yuan-jie

ZHENG Li-tao

HU Zhi-qiang

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Related Institution

School of Civil and Architectural Engineering, Wuhan University

School of Hydraulic Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology

School of Civil Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology

College of Mechanics and Engineering, Liaoning Technical University

Institute of Geotechnical Engineering, Changzhou University

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