Tri-Clamp Project Report

F.E ANALYSIS OF TRI-CLAMP

OBJECTIVE OF STUDY: The Tri-Clamp will be used under ASME VIII-1 service. This product cannot be calculated to code rules due to the complexit o! its "eometr. Instead the rules o! ASME VIII-# are used with ASME VIII-1 allowable stresses to determine its acceptabilit. $ressure inside the shell is 1%&&  psi and the model is restrained b applin" a !ixed support at the clamp.

INTRODUCTION:

Clamp 'ittin"s( A connection is made up o! a plain !errule) a clamp) and a "as*et. Tees) elbows and reducers are available with Tri-Clamp connections. All three stles are in compliance with +A standards !or C.I.$. ,clean in place. The three tpes o! clamp !ittin"s are desi"ned !or u se in 'ood) air) $harmaceutical and Chemical Industries. •

Tri-Clamp connections are the industr standard) havin" nueter-stle !errules to simpli!

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desi"n and installation. /-0ine and /I-0ine male!emale !errules sel!-ali"n durin" ti"htenin" so 2oints are

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3uic* and eas to assemble or ta*e apart. /-0ine uses the same series o! clamps as the Tri-Clamp Tri-Clamp

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INPUT DATA: Material stren"th properties used in this report are obtained !rom ASME II) Table 1A) and are suitable !or VIII-1 components. The rules o! ASME VIII-# are used to set the stress limits.

'i" 1- Tri- Clamp Assembl 1 Clamp) # 'errule) + 4olt) 5 6ut

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GEOMETRIC MODELING DATA:

'i" #- i!!erent section view o! the Tri-Clamp

Table1( 0ist o! material used !or Tri-Clamp

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METHODOLOGY:

Creatin a CA Model

Importin" CA Model 7

Static- Structural Analsis

Meshin" Applin" boundar conditions and pressure on the inner shell. Solve. 8esults

CREATING A CAD MODEL :

CATIA ,Computer

Aided

 plat!orm CACAMCAE

Three-dimensional commercial so!tware

Interactive

Application

suite developed

b

is the

a

multi'rench

compan Sstems. CATIA is the cornerstone o! the assault Sstems product li!eccle mana"ement so!tware suite. The CA model has been created in the wor*bench o! the CATIA v% so!tware accordin" to the dimensions

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'i" +( CA model o! Tri-Clamp

MESHING: A6S9S is a "eneral purpose !inite element modelin" pac*a"e !or numericall solvin" a wide variet o! mechanical problems) used widel in industr to simulate the response o! a phsical sstem to structural loadin") and thermal and electroma"netic e!!ects. A6S9S uses the !initeelement method to solve the underlin" "overnin" e3uations and the associated problemspeci!ic boundar conditions. The CA model is export to A6S9S b savin" the cad model as .STP !ormat.

MESHING THE GEOMETRIC MODEL: The meshin" o! "eometr was per!ormed in A6S9S and as discussed earlier in the me thodolo". The meshin" is carried out b usin" + tetrahedral elements havin" "lobal mesh si:e o! 1 inch) correspondin" mesh details are as discussed below.

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'i" 5( Tri-Clamp a!ter Meshin"

Boundar !ond"#"on$ and %oad$: 4oundar conditions and loads are applied on the sstem as indicated below. • •

As per the problem statement the pressure !orce o! 1% && psi is applied on the inner shell. 'ixed support is applied on the one end o! sha!t which is connected to the motor.

For S#a#"!- S#ru!#ura% Ana%$"$: Appl !ixed support at one end o! the sha!t which is connected to the motor as shown below( As per the problem statement the pressure !orce o! 1%& & psi is applied on the inner shell.

'i" %( Applin" 4oundar conditions and 'ixed support

So%u#"on:

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A!ter applin" boundar conditions and rotational velocit) the sstem is tuned !or solution where the so!tware solves usin" mathematical models and di!!erential e3uations.

S#a#"! $#ru!#ura% Ana%$"$:

Von-Mises stress( 

The maximum e3uivalent Von-Mises stress value o! Tri-Clamp is 1+;;% $si and minimum is <.1=1= $si.

'i" >( Von-Mises stress distribution alon" Tri-Clamp

Total e!ormation( 

The maximum total de!ormation value o! Tri-Clamp is &.&&&5+55+ inch and minimum is & inch.

'i" =( Total e!ormation alon" Tri-Clamp

Con!%u$"on$:

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1. The e3uivalent von-mises stress distribution is obtained. #. The maximum e3uivalent von mises stress obtained is 1+;;% $si which is less than the $ermissible stress value o! Clamps 7 $ipe caps 15;&& $si. Also less than permissible 3.

stress value o! bolts #%&&& $si. The max de!ormation obtained is &.&&&5+55+ inch.

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