Stresses in circle hoops
according to Roak R.J. "Formulas for stress"
Attention!
This calculation is only a simplified estimation and does not replace a detailed design calculation.
Signature:
Title:
Remarks:
Date:
Charasteristics of the hoop:
Name
Value
Unit
Radius of the hoop
R
mm
Hoop wall thickness
d
mm
Production tolerance inside
c
1i
mm
Prduction tolerance outside
c
1a
mm
Elastic modulus
E
N/mm²
Sketch:
Loadings:
Load cases 1 — 3
Load cases 4 — 6
Load cases 7 — 9
Load cases 10 — 12
Name
Load case 1
Load case 2
Load case 3
Unit
Load case name
Wear allowance inside
c
2i
mm
Wear allowance outside
c
2a
mm
Loading variants
Referential force
P
kN/m
Referantial moment
M
o
kN·m/m
Angle
α
(s.Fig.)
°
Angle
β
oder
γ
(s.Fig.)
°
Pressure or dead weight
w
(s.Fig.)
kN/m²
Liquid weight
γ
kN/m³
Radius referential pressure
w
(s.Fig.)
kN/m³
Temperature
T
°C
Name
Load case 4
Load case 5
Load case 6
Unit
Load case name
Wear allowance inside
c
2i
mm
Wear allowance outside
c
2a
mm
Loading variants
Referential force
P
kN/m
Referantial moment
M
o
kN·m/m
Angle
α
(s.Fig.)
°
Angle
β
oder
γ
(s.Fig.)
°
Pressure or dead weight
w
(s.Fig.)
kN/m²
Liquid weight
γ
kN/m³
Radius referential pressure
w
(s.Fig.)
kN/m³
Temperature
T
°C
Name
Load case 7
Load case 8
Load case 9
Unit
Load case name
Wear allowance inside
c
2i
mm
Wear allowance outside
c
2a
mm
Loading variants
Referential force
P
kN/m
Referantial moment
M
o
kN·m/m
Angle
α
(s.Fig.)
°
Angle
β
oder
γ
(s.Fig.)
°
Pressure or dead weight
w
(s.Fig.)
kN/m²
Liquid weight
γ
kN/m³
Radius referential pressure
w
(s.Fig.)
kN/m³
Temperature
T
°C
Name
Load case 10
Load case 11
Load case 12
Unit
Load case name
Wear allowance inside
c
2i
mm
Wear allowance outside
c
2a
mm
Loading variants
Referential force
P
kN/m
Referantial moment
M
o
kN·m/m
Angle
α
(s.Fig.)
°
Angle
β
oder
γ
(s.Fig.)
°
Pressure or dead weight
w
(s.Fig.)
kN/m²
Liquid weight
γ
kN/m³
Radius referential pressure
w
(s.Fig.)
kN/m³
Temperature
T
°C
Superposition:
Variants 1 — 6
Variants 7 — 12
Load cases
Variant 1
Variant 2
Variant 3
Variant 4
Variant 5
Variant 6
Variant name
Temperature
T
max
Allowable stress, N/mm²
Load cases
Variant 7
Variant 8
Variant 9
Variant 10
Variant 11
Variant 12
Variant name
Temperature
T
max
Allowable stress, N/mm²