What unit are the modal mass participation factors

[melfio]

So I've found the chart that lists the mass participation in each mode and axis. What unit are the results under each axis? See picture

[John_Holtz]

Hi @melfio 

It looks like you are not using Autodesk Simulation Mechanical software; therefore, you might need to ask the company that created the software you are using.

Otherwise, my guess is the mass participation is in units of mass.

• What is the total mass of your model?
• What are the units of mass in your analysis? (Remember: mass = force/gravity.)

[melfio]

Hello John.Holtz,

I am using Autodesk Fusion 360. 

BR

Leo

[John_Holtz · Accepted solution]

Hi Leo,

The Help page "Mass Participation Factors result" indicates the values are percent. 0% indicates that none of the mass is vibrating in the direction at that frequency; 100% indicates that all of the mass is vibrating in that direction at that frequency.