U Unified MA MAterials R Response C COde (UMARCO) update & Thermal Response of Dendrites Qiyang Hu (UCLA) Aaron Oyama (UCLA) Shahram Sharafat (UCLA) Jake Blanchard (Wisc) Nasr Ghoniem (UCLA) 19 th HAPL Meeting University of Wisconsin, Madison Oct. 22-23, 2008
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U nified M A terials R esponse C O de (UMARCO) update & Thermal Response of Dendrites
U nified M A terials R esponse C O de (UMARCO) update & Thermal Response of Dendrites. Qiyang Hu (UCLA) Aaron Oyama (UCLA) Shahram Sharafat (UCLA) Jake Blanchard (Wisc) Nasr Ghoniem (UCLA). 19 th HAPL Meeting University of Wisconsin, Madison Oct. 22-23, 2008. Unified Simulation. - PowerPoint PPT Presentation
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UUnified MAMAterials RResponse CCOde (UMARCO) update& Thermal Response of DendritesQiyang Hu (UCLA)
Aaron Oyama (UCLA)Shahram Sharafat (UCLA)Jake Blanchard (Wisc) Nasr Ghoniem (UCLA)
19th HAPL MeetingUniversity of Wisconsin, Madison
Oct. 22-23, 2008
2
Unified Simulation Unified Model would
Avoid inconsistencies Simplify modeling of wide variety of situations
New tool will model: Heating profile (x-rays and ions) Transient temperatures, stresses, strains Fracture mechanics Ion deposition profile, diffusion, and clustering
UMACROHAPL pellet
spectrum Material: SRIM Material: Mech Prop.
Ion Implant. Profile Vol. Heating Rate
Temperature CoupledCoupled
Transient stress strain field Module
Constitutive Lawelastic, plastic
Fracture Module ImprovedImproved
Stress Waves CoupledCoupled
Diffusion Module:Ion, Helium,
Bubbles, Carbon
Fortran’90 C++
1
2
4
Modeling of Surface Cracking
0
2
4
6
8
10
12
0 25 50 75 100 125 150
ChamberIon Beam
Sre
ss In
tens
ity (M
Pa-
m1/
2 )
Crack depth (m)
•Stress intensity factor decreases as cracks grow further from surface
•Crack growth will arrest
•Crack arrest will be more shallow for short pulse experiments (like RHEPP)