|August 29, 2014, 08:06||
Join Date: May 2014
Posts: 9Rep Power: 4
I'm trying to simulate roll motion of a box. It is completely surrounded by water and my aim is to apply a pure sinusoidal roll motion on it (where I define frequency or time period, and amplitude).
I used the dynamicMeshDict with solidBodyMotionFunction SDA (more information: http://www.tfd.chalmers.se/~hani/kur...reeSurface.pdf).
Now my problem is, that the resulting moment has a shorter period (/lower frequency) than the applied one, which is not logical. I tried to understand the code behind the SDA, but I am not sure what to do if I want a constant roll motion.
In the attachment you will find a diagram where you can see the amplitude growing, while the time period decreases. After more than 15s I usually get a sawtooth-signal...
Thanks in advance!
|roll motion, sda, solidbodymotionfunction|
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