sow

[Ing.Vedder]

Hello everyone,
I would need to dimensional a tail of swallows as a connection between two thick steel blocks (200mm) which are placed in traction between them.
I was thinking of dimensionaling the tail of simple swallows...nte calculating the area of the "maximum sections" to cut (see sketch attached).unfortunately they ask me a support from the yard and it is a job to do quickly without sophisms, so I don't have the chance to maybe make a fem model to see its behavior. .

How is it right to proceed? Did I make it too simple?

Do you have any guidelines on how to size a swallow tail?

the inclinations of the tail I hypothesized them to 45° I think is the best configuration


thanks to all of the support, as always

 

[Fulvio Romano]

I didn't understand how the forces were applied, but why did I cut? I would say, without too many sophisms, traction, minimal area the basic one, multiplies by 3 so as to consider the factor of carving, applies the security factor of 1.5.

Maybe I'm the one doing it too easy?

 

[Ing.Vedder]

I'm the one who said bad. .

what I have to verify and dimensional is not the tail of swallow "male" but the seat "female"!! That's why I saw cut! !

The male as you say is to check rightly at traction. .

Sometimes I express myself just like a dog!:biggrin:

 

[Fulvio Romano]

but the female is not drawn.. .
I would say that the female works in bending. If "up" the female, I have a pressure on the tilted face, given by contact, with components all down. then you could schematize as a distributed load, with components all down, and whose resulting is the (half of) force you want to get.

In fact, as we know that the most solicited section is the last (I believe, but you did not post the drawing) you can also replace the distributed load with its resulting, so much the effect felt by the last section does not change.

 

[Ing.Vedder]

I'm a donkey.
Unfortunately, I often have these problems that must be solved in a very short time and I lose the thread of the problem, I hate to work this way.

thanks fulvio for bringing me back to the right way::finger:

 

[AlbertoC]

hi ing. vedder
A cut halving on the most stressed section would not suffice.
That edge is screaming: "I'm a carving, I'm a carving!"
the fracture will depart from the frigates of the sizing.
Maybe loose the carving, create a connection.
tree

 

[Fulvio Romano]

[...]multiplies by 3 so as to consider the carving factor[...]

Just what Albertoc says... I also emphasized...