Calculation of eyelets
(in accordance with DIN 28086, November 1977)
Input data
Eyelet head radius
r
1
mm
(see Attachment 1)
Hole center height
h
mm
Hole diameter
d
mm
Eyelet thickness
s
1
mm
Eyelet connection weld thickness
a
1
mm
Shackle bolt diameter
d
s
mm
Reinforcing ring thickness
s
R
mm
(two rings welded at both sides)
Reinforcing ring outer diameter
D
R
mm
Vessel shell thickness
s
e
mm
Reinforcing plate thickness
s
2
mm
Reinforcing plate corner radius
r
2
mm
Reinforcing plate width
b
mm
Reinforcing plate length
l
mm
Stress load
F
e
kN
Inclination angle
β
°
Stress load horizontal component
F
x
kN
Stress load vertical component
F
y
kN
Elastic modulus
E
N/mm²
Allowable pressure according to Hertz
p
o all
N/mm²
Allowable stress due to bending and tension
σ
all
N/mm²
Allowable stress intensity in connection weld
σ
V all
N/mm²
Calculate
Calculation
Pressure according to Hertz
p
o
N/mm²
Maximum stress due to bending load
σ
M
N/mm²
Maximum stress due to tension load
σ
F
N/mm²
Maximum total stress in eyelet
σ
tot
N/mm²
Maximum stress in connection weld due to bending load
σ
aM
N/mm²
Maximum stress in connection weld due to tension load
σ
aF
N/mm²
Maximum shear stress in connection weld
τ
a
N/mm²
Maximum stress intensity in connection weld
σ
aV
N/mm²
Results
Pressure according to Hertz
p
o
=
N/mm²
p
o all
=
N/mm²
Maximum total stress in eyelet
σ
tot
=
N/mm²
σ
all
=
N/mm²
Maximum stress intensity in connection weld
σ
aV
=
N/mm²
σ
V all
=
N/mm²
Attachments
1. Sketch
ASCII DXF
Binary DXF
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