On the role of secondary voids and their distribution in the mechanism of void growth and coalescence in porous plastic solids

2017 ◽  
Vol 108 ◽  
pp. 203-215 ◽  
Author(s):  
I.A. Khan ◽  
V. Bhasin
Keyword(s):  
Void Growth ◽  
Void Growth And Coalescence ◽  
Porous Plastic

Void Growth and Local Necking in Biaxially Stretched Sheets

1978 ◽  
Vol 100 (2) ◽  
pp. 164-169 ◽  
Author(s):  
A. Needleman ◽  
N. Triantafyllidis
Keyword(s):  
Void Growth ◽  
Plastic Material ◽  
Material Model ◽  
Forming Limit ◽  
Equivalent Thickness ◽  
Forming Limit Diagrams ◽  
Local Necking ◽  
Classical Plasticity ◽  
Porous Plastic

The role of void growth in triggering local necking in biaxially stretched sheets is investigated. A recently proposed constitutive equation for porous plastic materials is employed in conjunction with the model of localized necking introduced by Marciniak and Kuczynski. An increased initial volume concentration of voids within the incipient neck plays the role of the imperfection. The predictions of this analysis are compared with corresponding predictions based on classical plasticity theory with various types of initial inhomogeneities. It is found that the porous plastic material model predicts forming limit diagrams qualitatively in accord with experimental results. However, the results also show that any microstructural inhomogeneity that gives rise to a continually decreasing rate of hardening in the neck would be expected to predict qualitatively similar forming limit diagrams. It is also found that the hypothesis of an equivalent thickness imperfection is not necessarily appropriate for high hardening materials.

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

scholarly journals Void growth and coalescence in irradiated copper under deformation

2018 ◽  
Vol 502 ◽  
pp. 123-131 ◽  
Author(s):  
P.O. Barrioz ◽  
J. Hure ◽  
B. Tanguy
Keyword(s):  
Void Growth ◽  
Void Growth And Coalescence
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