Eyelets for mounting vessels and apparatuses
(in accordance with DIN 28086, November 1977)
Input data
Eyelet length
l
mm
(see Attachment 1)
Hole center height
h
mm
Hole diameter
d
mm
Eyelet thickness
s
1
mm
Connection weld thickness
a
mm
Shackle bolt diameter
d
s
mm
Tension load
F
e
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 intensity in connection weld
σ
aV max
N/mm²
(see Attachment 2)
Inclination angle by maximum equivalent stress
β
max
°
(see Attachment 2)
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 max
=
N/mm²
σ
V all
=
N/mm²
Attachments
1. Sketch
2. Stresses in connection weld
β
σ
aM
σ
aF
τ
a
σ
aV
Table terms:
β
—
inclination angle
σ
aM
—
stress in connection weld due to bending load, N/mm²
σ
aF
—
stress in connection weld due to tension load, N/mm²
τ
a
—
shear stress in connection weld, N/mm²
σ
aV
—
stress intensity in connection weld, N/mm²
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