This paper proposes a method to estimate the actual reaction loads in gimbal and hinged metal bellows expansion joints. Friction and some media pressure forces, which are not considered in current Expansion Joint Manufactures Association (EJMA) standard calculations, are added to bellows spring rate to estimate the expansion joint movement reaction moment. The proposed calculation method is based upon pressure and movement tests of large size expansion joints.

References

References
1.
ASME B31.3
,
2006
, “
Process Piping
,”
ASME Code for Pressure Piping, B31
,
New York, NY
, Chap. II, Appendix A.
2.
NEMA SM23 (R1997, R2002)
,
1991
, “
Steam Turbines for Mechanical Drive Service
,”
Steam Piping Systems, NEMA Standards
,
Rosslyn, VA
, Sec. 8.4.
3.
Veiga
J. C.
,
Medeiros
,
J.
, and
Veiga
,
J. L. B. C.
,
2009
, “
Analysis of FCC Expansion Joints Movement Test
,”
2009 ASME Pressure Vessel and Piping Conference
,
Prague, Czech Republic
, Paper No. PVP2009-77828.
4.
EJMA
,
9th ed.
, Sec. 4,
Standards of the Expansion Joint Manufacturers Association Inc.
,
Terrytown, NY
.
5.
StatPoint Technologies, Inc.
,
Statgraphics Centurion XV version 15.2.00 (Professional Edition)
,
Warrenton, VA
.
6.
Benjamini
,
Y.
,
1988
, “
Box and Whisker Plot—Opening the Box of a Boxplot
,”
Am. Stat.
,
42
(
4
), pp.
257
262
.
7.
NIST
,
2008
, “
Weibull Distribution
,”
Engineering Statistics Handbook
,
National Institute of Standards and Technology
, Gaithersburg, MD.
You do not currently have access to this content.