Mass Moment of Inertia - Reg

[Murali27]

Dear All

Mass moment of inertia changes with respect to mesh element size. When i take a plate of 4mx4m, ETABS performs the analysis and MMI is 3 times more than the element when meshed 1mx1m.

Will it calculate the self weight of column/wall in the computation of MMI?

Thanks
Murali G

 

[DENSAL55]

Yes it will calculate the self weight of all object if the option in mass source are checked.

 

[Murali27]

Thanks DENSAL55.

My question is that floor meshing makes the change in value of MMI. When it gets divided into many parts i.e fine meshing, then the result will be close to the exact one.

Thanks again
Murali G