My question concerns frequency studies.
In the Solidworks Help it says: "Mass participation ratios are important because they help determine how well the computed modes are suitable for solving problems involving basic motion. Most codes require that at least 80 % of the mass of the system participate in the directions indicated."
However I don't understand its meaning, what happens if I have a percentage below 80%, what does it mean physically for the system?
Can you enlighten me?
Hello
Maybe it's a little late to answer you:
If you have a percentage of less than 80% in a given direction (let's say X) when it is a direction for which you have imposed an excitation, it means that the number of frequencies tested is not sufficient. In other words, you may miss certain resonant frequencies that can cause damage to your structure. And the results obtained in terms of constraints, displacements... etc., will not be sufficiently representative to be exploited. It is therefore necessary to increase the number of frequencies to be tested until this reference percentage is passed (80% - or 90% in some areas)