ERROR : RuntimeError: getVariable: no variable named 'YoungModulus'

[RokyC]

When I was referring to XX calculation, the following problems occurred. May I ask what might be the cause?

---

RuntimeError Traceback (most recent call last)
Cell In [8], line 16
14 H = E*Et/(E-Et)
15 for s in [m.s0, m.s1]:
---> 16 mgis_bv.setMaterialProperty(s, 'YoungModulus', E)
17 mgis_bv.setMaterialProperty(s, "PoissonRatio", nu)
18 mgis_bv.setMaterialProperty(s, "HardeningSlope", H)

RuntimeError: getVariable: no variable named 'YoungModulus'

[thelfer]

Would you just print the list of material properties expected by the behaviour.

for mp in m.b:
   print("- {}".format(mp.name)) 

[RokyC]

Code as follows:

modelling hypothesis

h = mgis_bv.Hypothesis.PlaneStrain

loading the behaviour

b = mgis_bv.load('src/libBehaviour.so','IsotropicLinearHardeningPlasticity',h)

material data manager

m = mgis_bv.MaterialDataManager(b,ngauss)
for mp in m.b:
print("- {}".format(mp.name))
for s in [m.s0, m.s1]:
mgis_bv.setMaterialProperty(s, "YoungModulus", 150e9)
mgis_bv.setMaterialProperty(s, "PoissonRatio", 0.3)
mgis_bv.setMaterialProperty(s, "HardeningSlope", 150e6)
mgis_bv.setMaterialProperty(s, "YieldStrength", 200e6)
mgis_bv.setExternalStateVariable(s, "Temperature", 293.15)

I got this(The command had been carried out:
mfront --obuild --interface=generic IsotropicLinearHardeningPlasticity.mfront
Treating target : all
The following library has been built :

• libBehaviour.so : IsotropicLinearHardeningPlasticity_AxisymmetricalGeneralisedPlaneStrain IsotropicLinearHardeningPlasticity_Axisymmetrical IsotropicLinearHardeningPlasticity_PlaneStrain IsotropicLinearHardeningPlasticity_GeneralisedPlaneStrain IsotropicLinearHardeningPlasticity_Tridimensional):

The error:

AttributeError Traceback (most recent call last)
Cell In [13], line 7
5 # material data manager
6 m = mgis_bv.MaterialDataManager(b,int(ngauss))
----> 7 for mp in m.b:
8 print("- {}".format(mp.name))
9 for s in [m.s0, m.s1]:

AttributeError: 'MaterialDataManager' object has no attribute 'b'

[thelfer]

Sorry. Just type:

for mp in b:
   print("- {}".format(mp.name))

[RokyC]

Umm, I got this:

TypeError Traceback (most recent call last)
Cell In [7], line 7
5 # material data manager
6 m = mgis_bv.MaterialDataManager(b, int(ngauss))
----> 7 for mp in b:
8 print("- {}".format(mp.name))
9 for s in [m.s0, m.s1]:

TypeError: 'Behaviour' object is not iterable

[thelfer]

Sorry, I am doing 10 things at the same time and I am not testing before posting. Let us try this:

for mp in b.material_properties:
   print("- {}".format(mp.name))

[RokyC]

Yes, the b.material_properties has nothing.

[thelfer]

So you just compiler an implementation that does not require you to define any material property !

[thelfer]

Are you sure ? Maybe you shall run the following simple tests to see if it works

test-mgis.zip

[thelfer]

Can't say. Make a diff of both MFront files. Then you can remove the include and src directories and recompile the behaviour...

[RokyC]

I know the reason, I used the mfront file of the official website before (there is no material attribute definition), but after using the new mfront file, my jupyterlab kernel did not restart.I apologize for the delay caused by my mistake.

[thelfer]

No problem. One must make (a lot of) mistake(s) to learn. Good luck !

[RokyC]

Thank you very much!