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How to introduce the mass in ansys
- Thread starter mohamedb
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Hello!
If you are working in millimiters you must specify the density in ton/mm^3.
If you are working in meters you must specify the density in kg/m^3.
I had also this problem in the past. Prepare a simple model of a beam and compare it with the analytical results and you will see that they match.
Note that the frequency independs on the gravity so you shouldn´t specify it.
If you are working in millimiters you must specify the density in ton/mm^3.
If you are working in meters you must specify the density in kg/m^3.
I had also this problem in the past. Prepare a simple model of a beam and compare it with the analytical results and you will see that they match.
Note that the frequency independs on the gravity so you shouldn´t specify it.
- Thread starter
- #3
"Note that the frequency independs on the gravity so you shouldn´t specify it."
This is not necessarily true; the loading condition could be such that the initial stress state caused by gravity affects the stiffness of the structure. If this is the case, then a pre-stressed modal analysis is needed.
This is not necessarily true; the loading condition could be such that the initial stress state caused by gravity affects the stiffness of the structure. If this is the case, then a pre-stressed modal analysis is needed.
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