An implicit computational approach in strain-gradient brittle fracture analysis

被引：3

作者：

Sessa, Salvatore ^{[1
]}

Barchiesi, Emilio ^{[2
]}

Placidi, Luca ^{[3
]}

机构：

[1] Univ Naples Federico II, Dept Struct Engn & Architecture, Via Claudio 21, I-80124 Naples, Italy

[2] Univ Sassari, Dipartimento Architettura Design & Urbanist, Palazzo Pou Salit,Piazza Duomo,6, I-07041 Alghero, SS, Italy

[3] Int Telematic Univ Uninettuno, Fac Engn, Corso Vittorio Emanuele II 39, I-00186 Rome, Italy

来源：

MECHANICS RESEARCH COMMUNICATIONS | 2024年 / 136卷

关键词：

Fracture mechanics; Strain-gradient modeling; Variational principles; Brittle fracture; VARIATIONAL APPROACH; FINITE-ELEMENT; DAMAGE; MODELS;

D O I：

10.1016/j.mechrescom.2024.104259

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Within the context of quasi-brittle fracture mechanics analyzed by finite element approaches, the present research addresses an implicit solution scheme applied to a strain-gradient continuum damage model. The implicit scheme is based onto an iterative procedure which minimizes for each loading step the increment of both the elastic energy and the damage field between two subsequent trial solutions. The performances of the proposed scheme are compared with those of a previously developed explicit scheme. Besides a better accuracy in the static response computation, it is demonstrated that the proposed approach provides more accurate fracture propagation patterns.

引用

页数：8

共 28 条

[1] A novel phase-field approach to brittle damage mechanics of gradient metamaterials combining action formalism and history variable [J].