Dear All,
Anybody have an idea how can we model tongue & groove flanges(groove depth etc) and male & female flanges in Pvelite 2010? I am not seeing these in flange dialog box.

Please elaborate your replies..

Thanks

Dear Rahul,

Tounge & groove can be a Girth flange or a nozzle flange or any other purpose flange, the only difference is that it doesnt has an entire face, rather the gasket is confined in an tongue & groove arrangement.

The design philosophy remains the same, you need to calculate bolt loads, min gasket width, bolt root area & den chk flange stresses as per Appendix -2.

Gasket is an important element playing a major role in flange analysis,

Effective gasket width would differ for tounge & groove type construction, you can refer ASME SEC VIII DIV -1 , APP-2, TABLE 2-5.2, for effective gaskets width for different flange faces.

The only thing you have to do is check for the thickness of flange by subtracting the step of the groove depth.

Hope this solves your query.

Thanks.

Thanks a lot Tahir for your reply..

Can you please tell me how we can do modeling for male and female flanges?

Dear Rahul,

Software is a miraculous tool to help mankind in increasing his efficiency, optimization & ultimately better engineered product, but its very essential to be strong in core concepts rather the only relying on the software for the better results.

Its the Engineers work to view the problem from the different angles & not the software's, There are always going to be certain limitations for the software, & the solution for the limitation is U & not the software.

Well, In Pressure vessels, modeling & running the software is not the core concept, CODE book is the concept, if you are well verse with the applicable Design Code & theories then no limits.

Well on the subject of Tongue & groove or any other type of Bolted joints, Appendix 2 & Appendix Y of ASME Div1 flanges are there to help you out.

& the calculations in the same line is done by PVelite.

Now its up to you how You how you simplify the model & calculate the thickness & other paramaters using PVelite as a tool.

PVelite & CODE calc both will help you.

Thanks.

One more point,

There is a general (b) in the figure in Appendix-2 for integral flanges that indicates if the groove or recessed face is not > 1/16in (or 1.5mm) then they can be part of the flange thickness.