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Damage Modelling in XFEM
Fri, 2010-07-09 04:15 - Jez
I am currently attempting to model a crack simulation using realistic values for materials such as aluminium and cast iron. I was wondering if anyone knew of a resource which might provide standard values for MAXPE/MAXPS in the damage initation command and for the parameters in the damage evolution command.
Any help would be much appreciated.
Jez
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dear jez try the input
dear jez
try the input files in abaqus help they are very usefull
generic numbers in abaqus input files
Dear Hcham,
Aren't they they just arbitrary numbers which no correlation to any specific material?
nope they arent avery
nope they arent avery material got its one numbers characteristics material u should give the right constants. and carful to the units.
Specify the command parameters in detail
Dear Jez,
Can you clarify to me which criterion and/or other optional parameters do you use in the *DAMAGE INITIATION command?
In addition, can you specify the type of evolution of damage you use? (TYPE=DISPLACEMENT/ENERGY/HYSTERESIS ENERGY)?
You have to make clear what the numerical data you request refer to, ok?
Best regards,
George Papazafeiropoulos
Second Lieutenant, Hellenic Air Force
Civil Engineer, Ph.D. Candidate
Dear George, In my code
Dear George,
In my code i have
DAMAGE INITIATION, CRITERION=MAXPS, TOLERANCE=0.05
*DAMAGE EVOLUTION, TYPE=ENERGY
My main problem is the values for the 'fracture energy' under *DAMAGE EVOLUTION. I am trying to do a crack propagation analysis on cylinders heads, but i need real life values of the materials used in cylinder heads; namely cast irons and aluminium.
Any help in where i can find this would be greatly appreciated. If you want more details i can provide them.
I understand that you are
I understand that you are doing a crack propagation analysis on cylinders heads, but is this for motor parts cylinders or motorcycle parts cylinder? One of my friend works for a automotive company and I think he can help us for real life values of the materials used in cylinder heads; namely cast irons and aluminium.I will try my best to help you from my side. Moreover, can tolerance can be used for greater than 0.05 or we can use more than this value.
http://www.matthewpais.com
http://www.matthewpais.com/2DEdgeCrack
Here they have taken 500MPa as Maxps damage for aluminium.