var fDesc=new Array();
fDesc[0] = "Rhino Membrane is a application with one of the most powerful form-finding strategies available today. Using a Fea (Finite Element Analysis) model it is able to relax any mesh into a stressed surface in equilibrium with positive stress fields only.
Using sparse matrix strategies it is fast and reliable and any shape from conventional hypar , minimal surfaces and pneumatic cushions can be modeled.
Membrane structures require due to their extreme slenderness a different design process than conventional structures in engineering: since membranes only work in tension (compression will cause wrinkling in the structure), the structure has to be shaped in such a way that it can bear the main load cases only by tensile forces.
To guarantee this essential requirement, the shape of the structure has to be determined by a form finding procedure: Instead of prescribing a material field X (i.e. the amount and position of material in space which composes the structure), an admissible stress field; is prescribed for which the equilibrium shape x is then determined.
In detail, the user has to specify the prestress distribution in the membrane and the edge cables (Pre-Tension) as input for the form finding process.";
function tShowHide(id, show)
{
var s = document.getElementById("desc");
if ((s.innerHTML.length<=212 || show==1) && show!=2)
{
s.innerHTML = fDesc[id];
if (document.getElementById('m1'))
document.getElementById('m1').style.display='none';
if (document.getElementById('m2'))
document.getElementById('m2').style.display='none';
if (document.getElementById('more_txt'))
document.getElementById('more_txt').style.display='inline';
}
else
{
s.innerHTML = '';
}
}