The influence of electric loading on crack paths in ferroelectrics

AbstractWe propose a formulation for tracking general crack paths in elastodamaging materials without mesh adaptivity and broadening of the damage band. The idea is to treat in a unified way both the damaging process and the development of displacement discontinuities by means of the regularized finite element method. With respect to previous authors’ contributions, a novel damage evolution law and an original crack tracking framework are proposed. We face the issue of mesh objectivity through several two-dimensional tests, obtaining smooth crack paths and reliable structural results.

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A boundary element analysis for electric apparatus considering electric loading

2020 International Conference on Electrical Machines (ICEM) ◽

10.1109/icem49940.2020.9270830 ◽

2020 ◽

Author(s):

S. Nagata

Keyword(s):

Boundary Element ◽

Element Analysis ◽

Electric Loading ◽

Boundary Element Analysis

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Fractal analysis of crack paths into innovative carbon-based cementitious composites

Theoretical and Applied Fracture Mechanics ◽

10.1016/j.tafmec.2017.03.016 ◽

2017 ◽

Vol 90 ◽

pp. 133-141 ◽

Cited By ~ 16

Author(s):

L. Restuccia ◽

A. Reggio ◽

G.A. Ferro ◽

R. Kamranirad

Keyword(s):

Fractal Analysis ◽

Cementitious Composites ◽

Crack Paths ◽

Carbon Based

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Crack Growth by Dimensional Reduction Methods

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.525-526.17 ◽

2012 ◽

Vol 525-526 ◽

pp. 17-20

Author(s):

P.H. Wen ◽

M.H. Aliabadi

Keyword(s):

Crack Growth ◽

Dimensional Reduction ◽

Crack Extension ◽

Initial Growth ◽

Stress Criterion ◽

The Maximum Principle ◽

Reduction Methods ◽

Small Increments ◽

Crack Growth Path ◽

Crack Paths

This paper presents a new fatigue crack growth prediction by using the dimensional reduction methods including the dual boundary element method (DBEM) and element-free Galerkin method (EFGM) for two dimensional elastostatic problems. One crack extension segment, i.e. a segment of arc, is introduced to model crack growth path. Based on the maximum principle stress criterion, this new prediction procedure ensures that the crack growth is smooth everywhere except the initial growth and the stress intensity factor of mode II is zero for each crack extension. It is found that the analyses of crack paths using coarse/large size of crack extension are in excellent agreement with analyses of the crack paths by the tangential method with very small increments of crack extension.

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