Running a frequency response in a structure and plotting the accelerations at specific locations, from 10-100 Hz
The resonance modes in these locations are in the range 60-80Hz, but the maximum plotting the maximum accelerations, these maximum appear at 25-35Hz, which is not expected. Anyone experienced this before? What is the reason for that? It seems something is wrong.
I defined the frequencies in nastran, and included all the resonance modes, 5 points per node.
The load acceleration is defined for the range of 10-100Hz, with unit input 1m/s^2
The resonance modes in these locations are in the range 60-80Hz, but the maximum plotting the maximum accelerations, these maximum appear at 25-35Hz, which is not expected. Anyone experienced this before? What is the reason for that? It seems something is wrong.
I defined the frequencies in nastran, and included all the resonance modes, 5 points per node.
The load acceleration is defined for the range of 10-100Hz, with unit input 1m/s^2
