Please ignore the formula in the first post, thats not what I've written, I didn`t have the code in front of me when I wrote my original post, my brain must need defragmenting.
My code goes as follows
degrees = 0 to 360 in 10 degree steps
real(mode shape) * cos(degrees) + imag(mode...
Hello,
I don't know if this is the right forum for this.
I would like to animate some mode shapes, at the moment I have written my program so that it uses cos(real part of mode shape) + sin(imaginary part of the mode shape). This indeed produces a shape which seems correct, but when I...
Thank you very much Dr. Platten, that is very helpful indeed, I understand now from your excellent explaination, the importance of constraint.
If I could bother you with one more question, If we did a modal analysis on the ruler in your example in free/free condition and determined the...
Hmm, I think I'm confused. Dr. Platten, what you explain makes sense, but are not the modes present in the metal plate suspended in free/free condition entirely due to the stiffness and mass distribution and damping coefficient of the said plate? Maybe my terminology is wrong, I am interested...
Thankyou Dr. Platten,
It's true that the player does have an influence, although involving a player while taking measurements introduces too many factors that are not reproducible and therefore comparisons between instruments are made impossible. When making measurements, I usually support the...
Thank you Mr. Locock,
I am interested in the stiffness of the finished musical instrument in playing condition, so bolting it to a large block of concrete is out of the question. Until now I have been measuring the frf's in free/free condition. Is it possible to calculate the static stiffness...
Hi, I'm an amateur vibration engineer. My real work is building bowed string instruments. But I have used modal analysis to observe the dynamic properties of the instruments and help me make descisions on how I could improve them. My question is it possible to calculate the static stiffness and...