SimonO
Mechanical
- Jul 12, 2017
- 2
Hello,
I am doing simulations to see how much a structure deforms when exciting with a acceleration amplitude on the full body, frequency range 0-200 Hz.
Currently I am using a damping ratio of 1% in the in the mode superposition method. I also tried the full model but the result is very different, with alot higher deformation. However I havent specified any damping ratio in the full method since it doesnt seem to have one equivalent to the superposition method.
Which method can I trust to give me the actual deformation of the structure?
Also is a damping ratio of 1% ok or should I decrease it to give even more margin? It is a bolted aluminium structure.
Regards
Simon
I am doing simulations to see how much a structure deforms when exciting with a acceleration amplitude on the full body, frequency range 0-200 Hz.
Currently I am using a damping ratio of 1% in the in the mode superposition method. I also tried the full model but the result is very different, with alot higher deformation. However I havent specified any damping ratio in the full method since it doesnt seem to have one equivalent to the superposition method.
Which method can I trust to give me the actual deformation of the structure?
Also is a damping ratio of 1% ok or should I decrease it to give even more margin? It is a bolted aluminium structure.
Regards
Simon