Floating Body Limit Displacement

mwesson

Hi, I would like to know if it is possible to limit the horizontal displacements of a floating object, and if so where in the code should I look to make the necessary changes. My interest is to model the interaction of waves with "moored" object.

Regards,

Mauricio Wesson

Alex

You only have to modify the function "RunFloating", there you can also add external forces if you want.

Regards

Alex

legendstone

i have changed the code to limit the horizontal displacement. i just rough make the horizontal velocity and horizontal displacement be zero. the changes are all in function "RunFloating"

Regards

Legend Stone

ktommy2

Hi legendstone,

could you please tell me, which values exactly in the program code you set 0 to limit the displacement?
for instance if you want to lock the direction x?
Do you do it where the runfloating function recomputes the values?

i tried a couple of times to change the followings:
fvel.x,
pos->x,
center.x,
but it did not work properly...

all summed up, what i want to achieve is to lock the displacement only in direction x. What i do not want is to lock the rest.

tanks a lot!
ktommy2

legendstone

In 'JSphCpuSingle::RunFloating' , my change is below:

if(Simulate2D){ face.y=0; fomegavel.x=0; fomegavel.z=0; fvel.y=0; }


//----------------modify--from--legend--vertical-slope--->>>
face.x=0;
fomegavel.y=0;
fvel.x=0;
//<<<--------------------modify--from--legend--vertical-slope----

center.x+=dt2*fvel.x;

ktommy2

Thanks a lot!

ktommy2

Hi,

i implemented your modification, but i still get some displacement in the X direction (the locked one).

im trying to build a simulation with a floating body in a pool with a wave generator. The waves are advancing in the x direction, but i want to fix the position along the x axis of the floating body, while it should be able perform a movement in the vertical direction and also rotate around its center of mass.

Got any ideas?

thx
Tomi