What Can Plastic Flow Fields Tell Us About Heat Sources in Deformation Processing?

JOM ◽  
2022 ◽  
Author(s):  
Anirudh Udupa ◽  
Narayan K Sundaram ◽  
Anirban Mahato ◽  
Tatsuya Sugihara ◽  
James B Mann ◽  
...  
Keyword(s):  
Plastic Flow ◽  
Flow Fields ◽  
Heat Sources ◽  
Deformation Processing

An eigenstrain-based model for residual stress arising from transient local surface heating

2009 ◽  
Vol 466 (2116) ◽  
pp. 1093-1116 ◽  
Author(s):  
J. M. Bromley ◽  
A. Saimoto ◽  
H. Alizadeh ◽  
D. J. Smith ◽  
C. E. Truman
Keyword(s):  
Plane Strain ◽  
Plastic Flow ◽  
Test Problem ◽  
Stress Fields ◽  
Heat Sources ◽  
Plastic Strains ◽  
Local Surface ◽  
Transient Heating ◽  
Thermally Induced ◽  
Out Of Plane

We present a model for approximating residual stresses arising from thermally induced plasticity and apply it to a simple two-dimensional (plane strain) test problem of transient heating. The model uses stress fields derived from simple eigenstrains to perturb an initially elastic-only solution in a way that mimics plastic flow. The plane strain condition of the test problem gives rise to plastic strains in the out-of-plane direction, owing to constraints on thermal expansion. However, the model is able to cope with the challenges this poses and also encapsulates the time-dependent nature of the problem. We show that the model agrees well with finite-element simulations under moderate strength heat sources provided that appropriate plastic flow rules are used. There exists sufficient generality in the model to allow its extension to more realistic scenarios.

Recurrence of fragmenting granules and their relation to meso- and supergranular flow fields

2003 ◽  
Vol 9 ◽  
pp. 371-371
Author(s):  
Th. Roudier ◽  
F. Lignières ◽  
M. Rieutord ◽  
P. N. Brandt ◽  
J.-M. Malherbe
Keyword(s):  
Flow Fields
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