aster edilizia windows

[UL80]

hello to all those who read this topic.
Excuse me in advance if I start one I don't know if it's useful or not.
I explain the situation in which I am, I take care (in this period) of restoration of historical churches, being the know a software a little too limited from the point of view of the definition of 3d models for an analysis (of any type) is a month that as I find the time I am studying the aste to try to solve a dome structure.
to learn I have studied several tutorials or guides: until now the most useful are those of colombo daniele and from today on the press hunter.
at the level of the mesh definition with its groups on salome I arrived (although I do not deny that or sentenced not little to meshare the solids modeled in autocad that the operations almost always failed me).
I then came to define the operations on eficas (I forgot that to tell you that for convenience work on windows) and here comes the drama, export the mesh to use in med when I go on affe_model to define the eficas groups does not see them and if I click on import and click on the med file does not see the groups... drama!!!
for the rest more or less I understand and maybe I can.
Only one other thing is not clear to me, when I go to define constraints and loads I have loads due to own weights (for the moment) and then I added on defi_materiau the rho, but then how do I say that the binding reaction I have on a surface must become the load on the surface on which it insists?
I hope you have the chariot of helpers, I know to claim a lot, but among these things and others that I am doing I am going crazy:tongue:.
I hope to succeed in doing this, and as a hand I would like to update you on the successes of this project, maybe this is a work coat of arms can also take place in the building/civil field as well as mechanical... Maybe!

 

[cacciatorino]

hello to all those who read this topic.
Excuse me in advance if I start one I don't know if it's useful or not.
I explain the situation in which I am, I take care (in this period) of restoration of historical churches, being the know a software a little too limited from the point of view of the definition of 3d models for an analysis (of any type) is a month that as I find the time I am studying the aste to try to solve a dome structure.
to learn I have studied several tutorials or guides: until now the most useful are those of colombo daniele and from today on the press hunter.
at the level of the mesh definition with its groups on salome I arrived (although I do not deny that or sentenced not little to meshare the solids modeled in autocad that the operations almost always failed me).
I then came to define the operations on eficas (I forgot that to tell you that for convenience work on windows) and here comes the drama, export the mesh to use in med when I go on affe_model to define the eficas groups does not see them and if I click on import and click on the med file does not see the groups... drama!!!
for the rest more or less I understand and maybe I can.
Only one other thing is not clear to me, when I go to define constraints and loads I have loads due to own weights (for the moment) and then I added on defi_materiau the rho, but then how do I say that the binding reaction I have on a surface must become the load on the surface on which it insists?
I hope you have the chariot of helpers, I know to claim a lot, but among these things and others that I am doing I am going crazy:tongue:.
I hope to succeed in doing this, and as a hand I would like to update you on the successes of this project, maybe this is a work coat of arms can also take place in the building/civil field as well as mechanical... Maybe!

eficas does not know the groups present in the med file, you must write them by hand (max 8 characters).
aster uses it a lot of ef for the building, especially for the civil works connected to the centrals.

However, if you want serious help, you should (I think I told you) go to the French code_aster forum, English and French languages are allowed. you will find many competent people and patients, but first well studied the tutorials you find, you will solve many doubts.
But I understand your difficulties, the access step to learn aster alone is really very challenging.

 

[UL80]

thank you so much you are too kind, the fact that to read continuously in English (not to mention French) makes me come certain migraines that I do not tell you, so I tried to ask Italians:tongue:, cmq I will go and try. ty a lot

 

[UL80]

just a curiosity that I hope you could advise me to solve it before being "forced" to write on the code_aster forum (of course I prefer to write in tialiano).
I got the first results with a structure composed of a shell that weighs (with only the weight) on a lantern, to give it own weights I added rho and on the affe_char_meca I inserted the weigher.
The doubt comes from liaison_mail, I explain: the shell ends with a cylindrical base with a small diameter, this base rests on the top of the lantern which has a cylindrical base as well but of a considerably greater diameter.
I defined the sup surface of the lantern as c1 and I compiled so the liason to say that the loads that the lantern receives from the spire should be applied on c1:

I don't know.
liaison_mail=_f(group_ma_ex='c1',
elim_mult='non,
type_raccord='massif',
group_ma_mait='gu') where gu is the volume of the owl

that you say is correct, no because as a mistake it gives me that the number of knots projected on the mesh is greater than 1/10 of the diameter of the mesh (I have no idea what it refers and therefore what it means).
I give you a great thank you

 

[UL80]

just a curiosity that I hope you could advise me to solve it before being "forced" to write on the code_aster forum (of course I prefer to write in tialiano).
I got the first results with a structure composed of a shell that weighs (with only the weight) on a lantern, to give it own weights I added rho and on the affe_char_meca I inserted the weigher.
The doubt comes from liaison_mail, I explain: the shell ends with a cylindrical base with a small diameter, this base rests on the top of the lantern which has a cylindrical base as well but of a considerably greater diameter.
I defined the sup surface of the lantern as c1 and I compiled so the liason to say that the loads that the lantern receives from the spire should be applied on c1:

I don't know.
liaison_mail=_f(group_ma_ex='c1',
elim_mult='non,
type_raccord='massif',
group_ma_mait='gu') where gu is the volume of the owl

that you say is correct, no because as a mistake it gives me that the number of knots projected on the mesh is greater than 1/10 of the diameter of the mesh (I have no idea what it refers and therefore what it means).
I give you a great thank you for any answer:

 

[cacciatorino]

that you say is correct, no because as a mistake it gives me that the number of knots projected on the mesh is greater than 1/10 of the diameter of the mesh (I have no idea what it refers and therefore what it means).
I give you a great thank you

It is correct, in liaison_mail the exclave group must be a surface, and the group neverthree a volume (allowing to work in 3d).

attention: actually, you apply liaison between the surface and the entire volume of the spire, which is incorrect. you should create a small solid group at the contact surfaces and put that inlia liaison (group that obviously will be a subset of the spire).

What appears to you is a warning, that is, the code warns you of a situation of potential danger, and what you're imposing a linear relationship between potentially far-off knots, which translated into intelligible language means: the actions which the c1 group transmits to the group are also applied on the knots far from the zone of interaction, while instead they should be applied only near, and then transmitted to the rest of the group through the material of the group itself. so aster tells you: Watch what you're doing, if you didn't think about the results you'll get could be unreliable.

a tip: When you work with weights, you have to be very careful about the measuring units, I attach you a pdf recovered from the code-aster forum where the consistent measuring units are illustrated.

 

[UL80]

My mother who celerity, cmq you are a great. fast and exhaustive answers:finger:
just to finish understanding the thing, if in the spire instead of a very small solid I take the surface that makes to affect the lantern, is it ok equal or must it be a solid? I ask why the surfaces are ready while the solids must or create them with autocad and then carry them on the salome, mesharli etc.... that until it is only guglia and lantern vabbè, but if everything works I have to make an interconnected complex composed of a church with annexed canon and apartments (if I think I come to cry).
cmq I repeat your immense kindness. Mitico:biggrin:

 

[UL80]

mother who fessacchiotto who are:tongue:, respect to what written above I had forgotten of some salome commands, as recommended by hunter I managed to create a volumetto: in salome I used the command creates group and selecting a group of knots near the contact area between the two solids gu and the (in the green image).
I attach the image of the example on which I am working, in gray I place the gulle gu, in green the volume s1 of the accident spire on the area c1 of the lantern (in orange) and in blue the bound areas v1 and v2.
I attach the mess file obtained from the calculation (where it gives me two errors) and the image of the z long shifts, which if they are in meters are really exaggerated instead with the graphic scale of the image they are fine (apparently).
on the mess tells me that I have areas aplat, it indicates to me the id, but on the salome such code is useless, so I thought that perhaps remeshing with another relationship of magnitude perhaps eliminates the problem, regarding the error of the distances that had spoken me hunter before, I did not solve it in the substance as the area c1 remains greater than that of contact with s1 but it takes me time to solve the thing.
What are you saying? :biggrin: I'm like a child I need to feel that I'm okay so otherwise I'm going down, that facing the thing alone is unnerving... have little charity

 

[cacciatorino]

I see you use it as a unit of length the meter.

but the elastic module e=1500... what unit did you use?

and the densita rho = 1800 what?

If you use the meters, you must express the elastic module in pa (n/m^2) and density in kg/m^3.

Try to turn the calculation again with a realistic elastic module, what you inserted I think is lower than a big-bubble after two hours of chewing! :biggrin:

for example for steel
== sync, corrected by elderman ==

 

[UL80]

as regards the own weights (rho) are those, rechecking from the analysis made the gush weighs 1500 kgf/m^3 while the lantern 1800, for the elastic module I considered that for a brick masonry full and mortar lime 1200-1800 n/mm^2 (I took 1500) and therefore (effectively I wrong :tongue comes 150*10^6 kg/m2,
Now I'll try again and then I'll show you.
cmq is the problem of aplat serious? because I don't know how to solve it, for that of liaison instead I have a half idea but it takes a little time.. .

 

[UL80]

was that, in fact now the maximum long z census are of the order of 7 mm, that is something plausible regarding the 700 and passes meters of first, in animation however that of before was more tasty xd

 

[cacciatorino]

as regards the own weights (rho) are those, rechecking from the analysis made the gush weighs 1500 kgf/m^3 while the lantern 1800, for the elastic module I considered that for a brick masonry full and mortar lime 1200-1800 n/mm^2 (I took 1500) and therefore (effectively I wrong :tongue comes 150*10^6 kg/m2,
Now I'll try again and then I'll show you.
cmq is the problem of aplat serious? because I don't know how to solve it, for that of liaison instead I have a half idea but it takes a little time.. .

Liaison's gonna let him go. The world's gonna keep rolling.

that of flattened elements potentially is more serious: I think that means you've got some malformed elements, which means you're almost closed on yourself so I'm effortless you could go into unstable issues. you should give a look at the elements in templates and possibly modify the mesh locally, before passing the files to code_aster.

Besides the mess file tells you that you have some matching knots, try using the "merge" function in the salome meshatore before exporting the med file.