OS05-2-2 Influences of stress triaxiality and work hardening on void growth and coalescence studied by X-ray tomography

2011 ◽  
Vol 2011.10 (0) ◽  
pp. _OS05-2-2-
Author(s):  
Akihide Hosokawa ◽  
David S. Wilkinson ◽  
Jidong Kang ◽  
Eric Maire ◽  
Masakazu Kobayashi ◽  
...  
Keyword(s):  
Void Growth ◽  
Work Hardening ◽  
Stress Triaxiality ◽  
X Ray ◽  
Void Growth And Coalescence

Void growth and coalescence in model materials investigated by high-resolution X-ray microtomography

2013 ◽  
Vol 181 (1) ◽  
pp. 51-66 ◽  
Author(s):  
Akihide Hosokawa ◽  
David S. Wilkinson ◽  
Jidong Kang ◽  
Masakazu Kobayashi ◽  
Hiroyuki Toda
Keyword(s):  
High Resolution ◽  
Void Growth ◽  
X Ray ◽  
Void Growth And Coalescence

Effect of triaxiality on void growth and coalescence in model materials investigated by X-ray tomography

2012 ◽  
Vol 60 (6-7) ◽  
pp. 2829-2839 ◽  
Author(s):  
Akihide Hosokawa ◽  
David S. Wilkinson ◽  
Jidong Kang ◽  
Eric Maire
Keyword(s):  
Void Growth ◽  
X Ray ◽  
Void Growth And Coalescence

Void Growth and Coalescence in Porous Plastic Solids With Sigmoidal Hardening

2019 ◽  
Vol 86 (9) ◽  
Author(s):  
Padmeya P. Indurkar ◽  
Shailendra P. Joshi
Keyword(s):  
Void Growth ◽  
Damage Model ◽  
Stress Triaxiality ◽  
Unit Cell ◽  
Porous Solid ◽  
Effective Response ◽  
Porosity Evolution ◽  
Aspect Ratios ◽  
Spherical Voids ◽  
Void Growth And Coalescence

Abstract This paper presents an analysis of void growth and coalescence in isotropic, elastoplastic materials exhibiting sigmoidal hardening using unit cell calculations and micromechanics-based damage modeling. Axisymmetric finite element unit cell calculations are carried out under tensile loading with constant nominal stress triaxiality conditions. These calculations reveal the characteristic role of material hardening in the evolution of the effective response of the porous solid. The local heterogeneous flow hardening around the void plays an important role, which manifests in the stress–strain response, porosity evolution, void aspect ratio evolution, and the coalescence characteristics that are qualitatively different from those of a conventional power-law hardening porous solid. A homogenization-based damage model based on the micromechanics of void growth and coalescence is presented with two simple, heuristic modifications that account for this effect. The model is calibrated to a small number of unit cell results with initially spherical voids, and its efficacy is demonstrated for a range of porosity fractions, hardening characteristics, and void aspect ratios.

Visualization by X-ray tomography of void growth and coalescence leading to fracture in model materials

2008 ◽  
Vol 56 (12) ◽  
pp. 2919-2928 ◽  
Author(s):  
A. Weck ◽  
D.S. Wilkinson ◽  
E. Maire ◽  
H. Toda
Keyword(s):  
Void Growth ◽  
X Ray ◽  
Void Growth And Coalescence

Void growth and coalescence in hexagonal close packed crystals

2019 ◽  
Vol 125 ◽  
pp. 198-224 ◽  
Author(s):  
Balaji Selvarajou ◽  
Shailendra P. Joshi ◽  
A. Amine Benzerga
Keyword(s):  
Void Growth ◽  
Hexagonal Close Packed ◽  
Void Growth And Coalescence

A dynamic investigation of observable void growth and coalescence in pure copper sheets

2011 ◽  
Vol 110 (9) ◽  
pp. 094905 ◽  
Author(s):  
Ma Dongfang ◽  
Chen Danian ◽  
Wu Shanxing ◽  
Wang Huanran ◽  
Cai Canyuan ◽  
...  
Keyword(s):  
Void Growth ◽  
Pure Copper ◽  
Void Growth And Coalescence ◽  
Dynamic Investigation

scholarly journals Void growth and coalescence in a three-dimensional non-periodic void cluster

2018 ◽  
Vol 139-140 ◽  
pp. 65-78 ◽  
Author(s):  
Victor Manuel Trejo Navas ◽  
Marc Bernacki ◽  
Pierre-Olivier Bouchard
Keyword(s):  
Void Growth ◽  
Three Dimensional ◽  
Void Growth And Coalescence
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