Elastic characteristics of tubesheets
in accordance with 2013 ASME B&PVC Section VIII Division 2
Attention!
This calculation is only a simplified estimation, and does not replace a detailed design calculation.
Input data
ASME VIII-2 design rule and option
§ 4.18.6 (design by rules)
§ 5-E.4.3, Option A
§ 5-E.4.3, Option B
Tubesheet hole pattern
equilateral triangular pattern
square pattern, pitch direction
square pattern, diagonal direction
Tubes-to-tubesheet junction
extend through the tubesheet
welded to backside of tubesheet
Tubesheet thickness
h
mm
Diameter of tube hole
d
mm
Tube pitch
p
mm
Radius to outermost tube hole center
r
o
mm
Nominal outside diameter of tube
d
t
mm
Nominal tube wall thickness
t
t
mm
Expanded length of tube in tubesheet
l
tx
mm
Total area of untubed lanes
A
L
mm²
Modulus of elasticity for tubesheet material
E
N/mm²
Modulus of elasticity for tube material
E
t
N/mm²
Allowable stress for tubesheet material
S
N/mm²
Allowable stress for tube material
S
t
N/mm²
Calculate
Results
Tube expansion depth ratio
ρ
Effective tube hole diameter
d*
mm
Effective tube pitch
p*
mm
Basic ligament efficiency for shear
μ
Effective ligament efficiency for bending
μ*
Effective elastic modulus ratio
E*/E
Effective Poisson's ratio
ν*
www.pvp-software.de
© Lau Engineering Solutions GmbH
