calculation of incorrect volume

[rapa]

Good morning, something strange happened to me in modelling 20.1.2.0
after uploading from the internet a simple model and after making a copy of it not to draw everything from head, I noticed that the mass did not change and this due to the fact that it does not change the calculation of the volume.
that is precisely changing the diameter of the pin does not change the volume as if it were a frozen data.
What do you have to do to place this?
Thank you.

 

[cacciatorino]

Good morning, something strange happened to me in modelling 20.1.2.0
after uploading from the internet a simple model and after making a copy of it not to draw everything from head, I noticed that the mass did not change and this due to the fact that it does not change the calculation of the volume.
that is precisely changing the diameter of the pin does not change the volume as if it were a frozen data.
What do you have to do to place this?
Thank you.

Can you attach the pkg of the piece? possibly in size 20.0.

 

[rapa]

unfortunately our designs are encrypted and only the holder to the decryption key

 

[rapa]

attach the elesa source file

 

[and]

to me with v.20.2.2 if I change some diameter the volume changes.
for the mass attentive to the density which is 1 , therefore mass and volume in this case coincide

 

[cacciatorino]

to me with v.20.2.2 if I change some diameter the volume changes.
for the mass attentive to the density which is 1 , therefore mass and volume in this case coincide

Density is a cad setting, not the step. It's the density that defaults is assigned to every new part created, and that however can be changed by the general configurations (I put the steel one).

 

[rapa]

then it will be some other parameter I don't know

 

[cacciatorino]

then it will be some other parameter I don't know

I also see changing the volume if I change the geometry. Are you looking at them from the cad or the pdm?

 

[rapa]

I see from the property command in 3d

 

[Kaji]

I see from the property command in 3d

the command "classic" to see the properties of the model, such as weight, volume etc is property part and group, then choose which feature to see, attach under image of the viewer but the command is entirely analogous in the cad full.
as already noted by hunter in reality the command you use is what shows you the attributes of the model in the pdm, for example from me it is called model property (not 3d property) and can be, that you have settings that freeze the properties to the first save or release of the model (even if it seems a somewhat strange setting).
Finally there are commands, in my case made by the cdm, that "freeze" the properties, for example the command "assemble weight" makes you choose two options: assigns weight to the group that freezes the weight and even if you attach the model remains equal, while assigns weight to the parts of the group, defines a density then deforming the body also alters the weight.

 

[rapa]

the command "classic" to see the properties of the model, such as weight, volume etc is property part and group, then choose which feature to see, attach under image of the viewer but the command is entirely analogous in the cad full.
as already noted by hunter in reality the command you use is what shows you the attributes of the model in the pdm, for example from me it is called model property (not 3d property) and can be, that you have settings that freeze the properties to the first save or release of the model (even if it seems a somewhat strange setting).
Finally there are commands, in my case made by the cdm, that "freeze" the properties, for example the command "assemble weight" makes you choose two options: assigns weight to the group that freezes the weight and even if you attach the model remains equal, while assigns weight to the parts of the group, defines a density then deforming the body also alters the weight.
View attachment 63750

thanks to your detailed explanation. I actually used the "part and group property" command you indicated. in all two cases (assignment or not of the mass) the volume remains unchanged to change the size of the piece. only happens for this particular piece (mystery).
if I fix the mass I change the density but the volume calculation remains constant even if I iron the piece!! !

 

[cacciatorino]

I once had a mass group assigned, and we didn't find a way to cancel that attribute. even there unique case, never more repeated, mystery!

 

[and]

found the problem...
If your piece is inside a group and you will weigh the group (I with cdm tolls), if you change the geometry of the part and ask for the volume of the group this does not change compared to before!!
while if you look at the weight and volume of the part are correct.

 

[rapa]

found the problem...
If your piece is inside a group and you will weigh the group (I with cdm tolls), if you change the geometry of the part and ask for the volume of the group this does not change compared to before!!
while if you look at the weight and volume of the part are correct.

 

[rapa]

known problem of the group, but I do not change the volume of the single piece.

 

[Kaji]

known problem of the group, but I do not change the volume of the single piece.

I wouldn't want to be wrong but the cdm tool should work similarly for the single part, i.e. if you choose assign weight "to the group" keeps your weight fixed even if you change volume.

 

[Kaji]

I wouldn't want to be wrong but the cdm tool should work similarly for the single part, i.e. if you choose assign weight "to the group" keeps your weight fixed even if you change volume.

no I correct myself, with the single part the command works "partially" (i.e. it does not work) if you check the weight with the command keeps it and probably at the passage to the pdm transfers the attribute, but if you deform the individual particular the weight varies, even if the particular is within a group.