Currently we have the following damage models explained on this channel: Ductile Hashin Johnson-Cook Concrete Damage Plasticity Which one of the following should I cover next ? abaqus-docs.mit.edu/2017/English/SIMACAECAERefMap/simacae-m-PrpMechanicalDamage-sb.htm Maxe or Quade Maxs or Quads Maxps or Maxpe M-K MSFLD Shear Mullins Effect FLD FLSD
@@hnrwagner it actually does, by editing the input file, not via the GUI. But it works on and off for me, so maybe if you could make a video, it would help me and others who are working in this direction.
Dear Dr. Wagner, thank you so much for your effort and sharing. May I ask if you can share the excel file used in this video for learning purpose? I really appreciate it.
Dear Dr, The triaxiality doesnot remain constant, the formulas for calculating triaxiality are valid till UTS only. After necking starts, the triaxiality changes by considerable amount. For example : for a uniaxial test, the traxiality shifts from0.33 to 0.57 ( i.e. UTS to failure).
@@hnrwagner It's the point where necking starts, ultimate tensile strength. Also failure strain is different than the overall fracture in the necking area so maybe you could look into that too
Thanks for this video. I want to used this damage model into the soft simufact for trimming process and your excel files would be interesting to used. Is it possible to share the excel files ?
references: mycurvefit.com/ The Effects of Stress Triaxiality, Temperature and Strain Rate on the Fracture Characteristics of a Nickel-Base Superalloy link.springer.com/article/10.1007/s11665-016-2049-9 Johnson Cook Material and Failure Model Parameters Estimation of AISI-1045 Medium Carbon Steel for Metal Forming Applications www.mdpi.com/1996-1944/12/4/609
You can also use the Excel solver function to change D1, D2 and D3 to minimize the squared error sum.
Thanks for the information for the triaxiality!
Sir, You save my life for my thesis. Thank you so much.
excellent work ,thank you
Currently we have the following damage models explained on this channel:
Ductile
Hashin
Johnson-Cook
Concrete Damage Plasticity
Which one of the following should I cover next ?
abaqus-docs.mit.edu/2017/English/SIMACAECAERefMap/simacae-m-PrpMechanicalDamage-sb.htm
Maxe or Quade
Maxs or Quads
Maxps or Maxpe
M-K
MSFLD
Shear
Mullins Effect
FLD
FLSD
Johnson-Holmquist damage model (JH-2)
Maybe you could talk about element deletion in beam elements?
@@Apoorva4oct as far as i know element deletion is not implemented in abaqus for beam elements
@@hnrwagner it actually does, by editing the input file, not via the GUI. But it works on and off for me, so maybe if you could make a video, it would help me and others who are working in this direction.
FLD
and FLSD
Thanks for the informative video. Can you explain how the standard Error of the Estimate is calculated in the calculation of D1, D2 and D3
Thank You Sir
Thanks master
Dear Dr. Wagner, thank you so much for your effort and sharing. May I ask if you can share the excel file used in this video for learning purpose? I really appreciate it.
Dear Dr,
The triaxiality doesnot remain constant, the formulas for calculating triaxiality are valid till UTS only. After necking starts, the triaxiality changes by considerable amount.
For example : for a uniaxial test, the traxiality shifts from0.33 to 0.57 ( i.e. UTS to failure).
What is UTS? And how would you do it instead?
@@hnrwagner It's the point where necking starts, ultimate tensile strength. Also failure strain is different than the overall fracture in the necking area so maybe you could look into that too
Thanks for this video. I want to used this damage model into the soft simufact for trimming process and your excel files would be interesting to used. Is it possible to share the excel files ?
What about D4 and D5 sir?
Guten Abend Ronald,
did you use the cockcraft-latham damage model in abaqus? Maybe you have an example of subroutine? I would appreciate!
Dear alex unfortunately i have never even heard of this damage model:(
@@hnrwagner This damage model is widely used in Simufact.Forming or DEFORM3D for balk metal forming
references:
mycurvefit.com/
The Effects of Stress Triaxiality, Temperature and Strain Rate on the Fracture Characteristics of a Nickel-Base Superalloy
link.springer.com/article/10.1007/s11665-016-2049-9
Johnson Cook Material and Failure Model Parameters Estimation of AISI-1045 Medium Carbon Steel for Metal Forming Applications
www.mdpi.com/1996-1944/12/4/609
Sir do you have damage parameters for nimonic c263 alloy?
unfortunatly no
D1,D2 and D3 are always calculated using a tension test?
you can also use compression or shear, but tension is much easier :)