On Tue, Mar 21, 2017 at 6:29 PM, Henry Spencer <hspencer@xxxxxxxxxxxxx>
wrote:
On Wed, 22 Mar 2017, Troy Prideaux wrote:
...As you can imagine, a sharp edge seat would promote a cutting of the
disc under load leading to a lower failure point for a given disc diameter
and material, whereas a radius edge would increase the failure point, and
provide more of a stress failure with the latter generally leading to less
material loss from the disc material from failure...
One possible way of making things better behaved: there are (or were --
old info) burst-disk designs in which the disk bulges under pressure enough
to contact a fixed sharp point positioned just downstream, which starts the
failure in a more predictable way.
