After drawing models of furniture in Rhino, if they were ecccentric I used to do an analysis for for overturning effect of chairs/benches/tables by hand until now. But only for objects in 2d plane. This is an example of bench or chair:
("A" point represents the reference point for overturning)
F1 * a ≤ 1.5 * F2 *b
But what should I do when objects are not planar (planar but extruded in third dimension like this bench)?
Here is an example of a 3d irregular shaped table/chair:
It is not possible to check for overturn this kind of irregular shaped object by hand. Because forces/momentums no longer lie in the same plane:
Some other combinations:
Does anyone know how in this cases an overturn check will be calculated?
here is .3ds file of this object:http://www.mediafire.com/?qxx7gqp1ndt9s6x