In the last weeks I have worked the damage model of the element SOLID65, but it has not allowed any results, so I decided to work with the element SOLID185, with the recommendations of the following video: https://www.youtube.com/watch ? v = Vb-xVXdY3Go and use this code: ET, MATID, SOLID185! Define material elements as SOLID185 MP, EX, MATID, 3.6e + 10! Define elasticity modulus MP, NUXY, MATID, 0.18! Define Poisson's ratio TB, MPLANE, 1,, 6! Define Elastic Micro-plane model TBDATA, 1.0.564,0.614.0.024.5.333e-05.0.94.1.95e06! k0, k1, k2, α_mic, β_mic, beta_mic ! k0_ = 0.564 ! k1_ = 0.614 ! k2_ = 0.024 ! Gamma_ = 5.333e-05 ! Alpha_ = 0.94 ! Beta_ = 1.95e06 Unfortunately every time I try to run the model, I get the following error: One or more unidentified characters have been detected in the command snippet which have been replaced by underscores while writing the CAERep file but those characters are written to the solver input file. Please check the command snippet carefully to avoid any unintended errors. Does anyone know how I can correct this error ?
https://www.researchgate.net/post/Experimental_and_Simulation_Verify_of_Reinforcement_Concrete_Beam_Bending_Crack_with_Ansys_Workbench
https://www.researchgate.net/post/Experimental_and_Simulation_Verify_of_Reinforcement_Concrete_Beam_Bending_Crack_with_Ansys_Workbench
HI
describe more about model...i try to extend solid 65 and verifying a RC beam and then use micro-plane
your command does not correct
Hi Camilo Andrés Mora Borja
- I can see in your command that you are using "Dots" between values not "commas" you have to use " , " between the values. you must have 6 values for damage parameters procedded by TBDATA,1, "6 parameters with commas between them"
There are two ways to use the micro-plane model
- The Elastic Micro-plane model with damage is supported by the element Solid185. A snippet example
ET,MATID,185 ! Define elements as SOLID185
MP,EX,MATID,29100 ! Define Elasticity Modulus
MP,NUXY,MATID,0.2 ! Define Poisson's ratio
TB,MPLANE,MATID,,6 ! Define the microplane model parameters
tbdata,1,0.75,0.75,0.208,6.109e-05,0.512,98 !k0,k1,k2,α_mic, β_mic, beta_mic
- The Coupled Damage-plasticity Micro-plane model is supported by the element CPT215. This model was presented on the paper by Zreid and Kaliske (2014, 2016, 2018)
(Link to the 2018 paper: https://dl.acm.org/citation.cfm?id=3296167)
A snippet example
! Material Properties
ET,1,215 ! Define elements as CPT215 (Coupled damage plasticity) (Change Number 1 with Matid (material ID) if using workbench)
KEYO,1,18,2 ! Activate extra degrees of freedom
! Parameter values
E = 40300
nu = 0.2
dens = 2.4e-09
fuc = 36.5
fbc = 41.975
fut = 2.56
Rt = 1
D = 4e4
sigVc = -40
R = 2
c = 1500
m = 2.5
gamt0 = 0
gamc0 = 2e-6
betat = .4e4
betac = .25e4
! Define elastic properties of material
MP,EX,1,E ! Define Elasticity Modulus (enter a value for E)- (Change Number 1 with Matid (material ID) if using workbench)
MP,NUXY,1,nu ! Define Poisson's ratio
MP,DENS,1,dens ! Define material Density
! Define microplane model properties
TB,MPLA,1,,,DPC ! Define Drunker-Prager
TBDATA,1,fuc,fbc,fut,Rt,D,sigVc
TBDATA,7,R,gamt0,gamc0,betat,betac
TB,MPLA,1,,,NLOCAL
TBDATA,1,c,m
hello, i am trying to use microplane model in ansys program using (solid 185) to simulate concrete in cyclic loading test, i know that there are 6 parameters (k0, k1, k2, gamma, alpha, beta) must be define in microplane model. i know how to calculate four of them (k0, k1, k2, gamma), but i dont know how to estimate the values of other parameters (alpha and beta) from experimental results, i really know that alpha and beta related to maximum and rate of degradation, respectively.
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