Override Mass or Center of Mass in Model

[Anonymous]

I saw this as a previously requested feature that was archived and I don't think the reason for archiving it necessarily makes sense; especially because I think this feature is pretty important to anyone who uses components off the shelf.

The feature is as follows: Give the user the ability to override the mass calculated by the chosen material and part volume and the ability to override the calculated center of mass location.

Creating a custom material for every off the shelf component to get the mass just right is a lot of work. I should be able to tell Fusion to ignore its own calculated value and use the one I enter. Even a basic implementation of this feature would be really helpful. 

I don't care if my model material says steel or birch; the part I'm holding has an easily measured weight and I know that weight better than Fusion does. 

The gist is: no one wants to have to model purchased component internals accurately.

[Anonymous]

I would like the ability to define the mass of a body or component, rather than having it automatically cailculated.

Typically this would be used to create simplified models of complex components like motors or valves, but only really need the external dimensions of the object rather than modeling each individual part inside of it properly to give it the correct mass.

[spencerhamblin]

This would be perfect for stuff such as small motors too. I'm working on a small RC aircraft and I know the wieght of the motors but they have a complex internal gemometry and all I care about is total mass and COG. Both of witch I alrady know.

[wilhamilton]

There should be a mass override option that ignores any changes to model features.  It is critically important to be able to assign the proper mass to off the shelf component models.  I'm never going to modify the CAD model of a motor, but I certainly want it to have the correct mass.  You should also be able to set the center of mass for a component as well.

[kylek292]

 Agreed Wilhamilton. There should be a way to switch to a "dumb reference" for the body, meaning it turns off the material properties for calculating the mass and just allows you to enter one for the component. It would ignore the changes in the model shape.

I currently have to do it the same way you're doing it as a work around.

[Anonymous]

Hi,

it is unbelievable that such an important feature is missing after 3 years of development. This could be a potential deal-breaker for Fusion 360. 

Mass overriding is absolute core functionality.

Dean

[Anonymous]

I also need this feature for the same use case as others have posted. Namely setting correct mass for "off the shelf" components.

Is there any plans for creating this feature in the near future?

[ricardo]

This is a very important functionality for designs with placeholders. Not always do we have access to the internal design of components to make the weight and CoG calculations accurate. In such cases it is imperative to override it.

Please add this functionality ASAP, Autodesk!

[martin]

to be able to assign a mass to a complex component would be very useful.

[richardpaulfox1968]

Hi

I would like to be able to assert masses to fastener library parts generated using using the parameter tool.

At present when creating simplified fastener parts the masses will reflect the amount of material in the model rather than the mass of the actual part.

Thanks

Richard

[elpidiovaldez5]

I just want to add 'me too' to this debate.  I got here because I had a servo model from GrabCAD that I wanted to give a real mass, so I could see how a robot's centre of mass shifts as it moves.  I think that it should be quite easy to allow this by offering different models for calculating the mass of a component.  The default can be to calculate from material properties and body shapes.  But for a complex imported component you might also be able to select: 1) User gives mass of component, model assumes it is evenly distributed in order to calculate COM.  2) User gives mass of component and marks position of COM.  The second option allows more accurate modelling if you have determined the COM experimentally, without modelling the internal details.

[Anonymous]

also need a mass properties override flag in the feature tree and optional column in the BOM (override mass property custom property true/false) so it is obvious that the component mass properties have been overridden.

[and.ranch]

Plus one from me on this feature request.

It would be a huge help, and frankly in most situations be more convenient to use than creating custom physical materials. 

[brandonu1996]

:+1: for this. Trying to model a battlebot and need the weights to be accurate for imported motor models.

[Anonymous]

My solution has been to apply the air material to parts then have another
body with the correct weight sitting inside the components

[Anonymous]

This is something that would be incredibly useful for simulating. We use placeholders for electronic components in our models and currently don't have a method for accurately simulating full assemblies with these in place as we can't set their mass/weight. 

[krokocad]

+1 vote. For example - batteries that go inside a in-fusion360-designed product that also will be simulated. Geometry for some battery is not an issue, mass is. One should be able to set such battery component/body mass manually.

[Anonymous]

+1... need this feature in 2020!

[luc.lebaillif]

+1 for this feature!

This feature is possible in the inventor and the soft are very similar. I can't understand how it's possible to miss this feature...

[MartinCrawford-DTLD]

I would like this feature as we use parts made by other, ie power supplies / batteries and do not want to have all the details within the power supply as it adds a lot of complexity.