local stress calculation sheet_edition 4-july-15

8/18/2019 Local Stress Calculation Sheet_Edition 4-July-15

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R U N P I P E

Pipe Geometry 609.69.52512.51.6

Pipe Material Material

137.9137.9

A T T A C H M E N T

Pipe

355.6

700

6

S U S Longitudinal Local Stress (Mpa) 10.94 Longitudinal Loc

Circumferential Local Stress (Mpa) 6.01 Circumferential

E X P Longitudinal Local Stress (Mpa) 10.94 Longitudinal Loc

Circumferential Local Stress (Mpa) 6.01 Circumferential

S A D D L E

120

Not Designed for Engineering PracticePlease see Notes

Pipe Size ( D, mm)Thickness ( T , mm)Mill-Tolerance ( MT , %)Corrosion llo!ance ( C , mm)

Cold llo!a"le Stress ( S c , Mpa)

Cold llo!a"le Stress ( S h , Mpa)

Trunnion Size ( d , mm) #e" Length ( L,

Trunnion $eight ( H ,mm) #e" Thickness

Pad Thickness ( Tp , mm)Support $eight

Pad Thickness (

Saddle ngle ( θ , ◦ )


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4Ma & Circumferential mem& Stress (Mpa) 0.09

Ma & Circumferential "ending Stress (Mpa) 3.44 Circumfe

LO

TRUNNION Local Stre!!e! "er!u! Tru##io# Diameter$

Ma & Trunnion diameter (mm) 400 Trunnion diamet

Structural % Local Stre!!e! "er!u! Di!ta#ce %etwee# &e

Ma & istance "et!een #e"s ( , mm) 400 istance "et!e

Pad Thickness ( Tp( mm)Pad Thickness (

350 355 360 365 370 375 380 385 3

0

2

4

6

8

10

12

Trunnion Diameter (mm)

Local Stress (MPa)

10

20

30

40

50

60

Local Stress (MPa)


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Shoop: Hoop stress: Non-unifor

: Uniform shear stress

50

32.00

16.00

32.00 (MPa)

Stre!! Cate,ory

1. This data calculation sheet is protected by intellectual property law including copyright. You a

S! : !ongitudinal primary stress resulting fromsustained loads e"cluded pressure

S!b-#b$%rimary : !ongitudinal bend

S&b-#b$%rimary : &ircumferential b

S!-%m : Total longitudinal primary stressS!m-%! : !ongitudinal membran

S&m-%!: &ircumferential membr

S&-%m: &ircumferential primary stress

S L (MPa) S L"-*"+Primar (MPa)

S hoop (MPa)

S C"-*"+Primar (MPa)S L-Pm (MPa)

S C-Pm (MPa)

'. The formula and methods which are used in this calculation sheet are based on those mentione

_ ('−

_ ( − _ '

_ ( − _ '

_ ≤

_ (1. 5

_ + ( 3

_ + ( 3


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). This sheet content may change without any prior notice.*. Users are highly appreciated if they let &+!&ST, SS now any problems or mista es in the

/. This sheet e"cludes trunnion or structural attachment design such as weld calculations. The lo

. 2n case of any occasional loads such as wind the method mentioned in +S3 4%5& S & 52

7. %ea stress criteria which co0er fatigue failure ha0e not been considered in this calculation sh

19. The primary circumferential local stress in ,oar (s model which is mainly based on the circu11. The input 0alues for this sheet are not chec ed. User s nowledge about the proper 0alid rang1'. +ll local stress calculations are based on effecti0e thic ness in which pad thic ness is consid


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7

ential Local Stress (Mpa) 1.35

Ma & Circumferential ending Stress(Mpa)

AL STRESS VERSUS ATTACHEMENT PARAMETE

Str

r 'ncrement 5 Ma & #e" Length (mm)

'!$ Stru

n #e"s 'ncrement 1 Ma & lange Length (mm)

R

Pad Thickness (mm) Tp( mm) Circumferential ending Stress at %(Mpa)-Pad is

considered

Circumferential mem"rane Stress at %(Mpa)- Pad isconsidered

0 395 400

SL_SusSC_SUSSL_EXPSC_EXP

200 220 240 260

0

500

1000

1500

2000

2500

3000

Local Stress (MPa)

SL_SUSSC_SUSSL_EXPSC_EXP

20

40

60

80

100

120

Local Stress (MPa)

L&n)i!udin"# S!ressCircum eren!i"S!ress

SUS

EXP

L&n)i!udin"# S!ress

Circum eren!i"#S!ress


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e$ Saddle )ic*+!

rement 1 120

tio#$ %are Pipe( Roar*+! Model %e#di#, a#d Mem'ra#e Ci

Definition Definition

ngle at point ( ϕ ,deg)

COMBINED STRE( ASED ON ASME PVC SECT!ON V

l Primary Stre!! P L a#d 1 '2Primary $ Ge#eral Seco#dary

380 400 100 150 2000

170 180

SC_mem_SUSSC_Bend_SUSSC-mem-EXPSC-Bend_EXP

0 20 400

0.5

1

1.5

2

2.5

3

3.5

4

Local !ircum"erential Bending Stress (MPa)

0 200

Circum eren!i"#%&men!_SUS

Circum eren!i"#%&men!_EXP

0 20 40 60

-10

-5

0

5

10

15

20

!ircum"erential Stress (MPa)

Circum eren!i"# %em*r"neS!ress

Circum eren!i"# Bendin) S!ress


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m shear stress : Non-uniform shear stress : Uniform shear stress

: Total shear stresses

0.00 0.00

7.05 0.13

0.00 (MPa) 0.00 (MP

Total Shear Stre!! MPa$

66.0 32.0 0.0

0.0 0.1 0.0

66.0 39.2 0.0

0.0 14.4 0.0

Notesa user are not allowed to copy republish and distribute this calculation sheet without permissio

ing stressS!b-#@ : !ongitudinal bending stressS&b-#@ : &ircumferential bending stress

nding stressS!m-#@ : !ongitudinal membrane stressS&m-#@ : &ircumferential membrane stress

stress S !-#@ : Total longitudinal stresses

ane stress S &-#@: Total circumferential stresses

S Lm-PL (MPa)S L"-*0 (MP S C"-*0 (MP S Lm-*0 (MP

S Cm-PL (MPa)S Cm-*0 (MPa

S L-*0 (MPaS C-*0 (MP

Total Lo#,itudi#al Stre!!MPa$

Total Circum-ere#tialStre!! MPa$

d in the technical papers on the WWW.CALCSTRESS.COM website. User must be aware of the a

_ +(' _ (

'−

_

_ +(' _ (

'−

_

_ ('−


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his sheet.

al stresses which are de0eloped in a pipe shell are calculated only. Trunnion or any attachment

2 6i0 ' should be referred for combined stress calculations.

et. 8or designing a piping system as a real engineering practice it should be considered as menti

ferential bending moment has been considered as membrane stress in the combined stresses.e of inputs and the methods limitations is important.red. So in calculation of stress at a place where no pad is used pad thic ness must be considered

formation including formula and methods applied and used in this datasheet. 3oreo0er some shrofessional ser%ices& CALCSTRESS IS NOT RESPONSIBLE 'OR AN( DAMA)ES* O

ay be obtained from finite element software such as &+ S+, 22 and added here. Usually in com


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7Ma & Circumferential ending Stress(Mpa) 7.05

3.32

Ma & Circumferential Mem"rane Stress(Mpa) 0.130.08

16.39

S

ctural A Local Stre!!e! "er!u! &e' Le#,th$

360 #e" Length 'ncrement 1

tural C Local Stre!!e! "er!u! 0la#,e Le#,th$

430 lange Length 'ncrement 5

C O

280 300 320 340 360 380


Web Lengt$ (mm)


L&n)i!udin"# S!ress

Circum eren!i"# S!ress

L&n)i!udin"# S!ress

Circum eren!i"# S!ress


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odel Local Circum-ere#tial %e#di#, Stre!! Di!tri'utio#$

120.00 -80.55

cum-ere#tial Stre!!e! Di!tri'utio#$

Definition

3 de)' Circumferential Moment at ( /&m)

SS !!" D!V #$

tre!! 1 G $ Local Seco#dary Stre!! 1 L $

250 300 350 400 450%lange Lengt$ (W, mm)

60 80 100 120 140

Circum eren!i"#S!ress_SUS

Circum eren!i"#S!ress_EXP

Beta Angle (deg)

0 100 120 140 160 180 200

SC_Bendin)_SUS

SC_Bend_EXP

Angle (deg)


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: Non-uniform shear stress : Uniform shear stress

: Total shear stresses

0.00 0.000.00 7.050.00 0.000.00 0.13

(MPa) 0.00 (MPa) 0.00(MPa) 0.00 0.00

0.00 0.000.00 7.18

a) 0.00 (MPa) 0.00

Sa-ty 0actor Re!ult

57.2 137.9 2.4 P"ss

0.1 206.9 1558.0 P"ss

57.5 413.7 7.2 P"ss

14.4 413.7 28.8 P"ss

.

S!b-#! : !ongitudinal bending stressS&b-#! : &ircumferential bending stressS!m-#! : !ongitudinal membrane stressS&m-#! : &ircumferential membrane stress

S!-#! : Total longitudinal stresses

S&-#! : Total circumferential stresses

) S L"-*L (MPa)) S C"-*L (MPa)) S Lm-*L (MPa)) S cm-*L (MPa)

(MPa)) S L-*L (MPa)) S C-*L (MPa)

"o# Mi!e! .4ui5ale#tStre!! MPa$

S allowa'le

plied method(s restrictions.

_ +(' _ (

'−

_

_ +('

_ (

'−

_


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ust be designed separately.

oned in +S3 4%5& S & 5222 6i0 '.

;ero.

eets and cells are unloc ed and the formula can change easily. 2t has been designed for trainingISSIONS AND ERRORS ARISIN) 'ROM USIN) THIS CALCULATION SHEET&

parison with support loads they are insignificant and can be ignored. 4ased on engineer s


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local stress calculation sheet_edition 4-july-15

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