Abstract

Fiber-reinforced plastic composite flanges have recently experienced a spectacular development in the area of pressure vessels and piping. The current procedures used for the design of these flanges are a major concern because of their inappropriateness to address the anisotropic behavior of composite materials. The current ASME code section X related to the design procedure of composite flanges uses the same analytical method as that of section VIII division 2, which treats the flanges as isotropic materials such as metallic flanges. This study deals with Fiber-reinforced plastic (FRP) bolted flange joints integrity and bolt tightness. A new developed analytical FRP model that treats anisotropic flanges with and without a hub is presented. The model is based on the anisotropy and a flexibility analysis of all joint elements including the gasket, bolts, and flanges. It is supported experimentally with tests conducted on a real NPS 3 class 150 WN FRP bolted flange. Furthermore, three different numerical models based on three-dimensional anisotropic layered shell and solid element models were conducted to further compare and verify the results obtained from the new developed analytical approach. The results show that the new model has potential to be used as an alternative tool to FEM to analyze the stresses and deformation of problematic FRP bolted joints.

References

1.
ASME,
2015
,
ASME Boiler and Pressure Vessel Code Section X, Fiberglass Reinforced Plastic Pressure Vessels
,
ASME
,
New York
.
2.
Aljuboury
,
M.
,
Rizvi
,
M. J.
,
Grove
,
S.
, and
Cullen
,
R.
,
2019
, “
Bolted Fibre-Reinforced Polymer Flange Joints for Pipelines: A Review of Current Practice and Future Challenges
,”
Proc. Inst. Mech. Eng. Part L J Mater. Des. Appl.
,
233
(
8
), pp.
1698
1717
.10.1177/1464420718766563
3.
Blach
,
A. E.
,
1996
, “
Fiber Reinforced Bolted Flanged Connections Discussion of ASME Code Rules
,” Proceedings of the International Conference on Pressure Vessel Technology,
ICPVT, Design and Analysis, Vol. 2,
Montreal, QC, Canada, July 21–26, pp.
301
306
.
4.
Blach
,
A. E.
, and
Hoa
,
S. V.
,
1988
, “
Effects of Pull-Back on Stresses in FRP Flanges
,” Proceedings of the 1987 SEM Spring Conference on
Experimental Mechanics
, Greenspoint, Houston, TX, June 14–19, pp.
315
–324
.https://jglobal.jst.go.jp/en/detail?JGLOBAL_ID=200902069728282888
5.
Blach
,
A. E.
, and
Sun
,
L.
,
1990
, “
Fiber Reinforced Plastic Bolted Flanged Connections
,”
Proceedings of the Second International Symposium on Fluid Sealing
, La Baule, France, Sept. 18–20, pp.
445
457
.
6.
Estrada
,
H.
, and
Parsons
,
I. D.
,
1999
, “
Strength and Leakage Finite Element Analysis of a GFRP Flange Joint
,”
Int. J. Pressure Vessels Piping
,
76
(
8
), pp.
543
550
.10.1016/S0308-0161(99)00021-6
7.
Blach
,
A. E.
, and
Hoa
,
S. V.
,
1987
, “
Bolted Flange Connections for Glass Fiber Reinforced Plastic Pipes and Pressure Vessels
,”
Proceedings 11th International Conference on Fluid Sealing
, Cannes, France, Apr. 8–10, pp.
445
457
.
8.
Sun
,
L.
,
1995
, “Bolted Flanged Connections Made of Fiber Reinforced Plastic Materials,”
Ph.D. thesis
, Concordia University, Montréal, QC, Canada.https://spectrum.library.concordia.ca/107/
9.
Kurz
,
H.
, and
Roos
,
E.
,
2012
, “
Design of Floating Type Bolted Flange Connections With GRP Flanges
,”
Int. J. Pressure Vessels Piping
,
89
, pp.
1
8
.10.1016/j.ijpvp.2011.08.004
10.
Blach
,
A. E.
,
1996
, “
FRP Bolted Flanged Connections Subjected to Longitudinal Bending Moments
,” Proceedings of the Fifth International Conference on
Computer Aided Design in Composite Material Technology-CADCOMP 96,
Udine, Italy, July 1, pp.
11
20
.https://www.witpress.com/Secure/elibrary/papers/CP96/CP96002FU.pdf
11.
Graham
, T.
E.
,
1989
, “
FRP Flange for Process Pipe and Tanks
,”
National Association of Corrosion Engineers, Tenth Biennial Managing Corrosion With Plastics Symposium
, San Antonio, TX, Nov.
6
9
.
12.
Sun
,
L.
,
1995
, “
Bolted Flanged Connections Made of Fiber Reinforced Plastic Materials
,” Ph.D. dissertation,
Concordia University
,
Montreal, QC, Canada
.
13.
Vafadar
,
A. K.
,
Bouzid
,
A.-H.
, and
Ngo
,
A. D.
,
2017
, “
Effect of Material Anisotropy on the Structural Integrity of Composite Bolted Flanged Joints
,”
ASME
Paper No. PVP2017-65062.10.1115/PVP2017-65062
14.
Bouzid
,
A.
, and
Galai
,
H.
,
2011
, “
A New Approach to Model Bolted Flange Joints With Full Face Gaskets
,”
ASME J. Pressure Vessel Technol.
,
133
(
2
), p.
021402
.10.1115/1.4001920
15.
Bouzid
,
A.
, and
Nechache
,
A.
,
2005
, “
An Analytical Solution for Evaluating Gasket Stress Change in Bolted Flange Connections Subjected to High Temperature Loading
,”
ASME J. Pressure Vessel Technol.
,
127
(
4
), pp.
414
427
.10.1115/1.2042480
16.
Nechache
,
A.
, and
Bouzid
,
A.
,
2007
, “
Creep Analysis of Bolted Flange Joints
,”
Int. J. Pressure Vessels Piping
,
84
(
3
), pp.
185
194
.10.1016/j.ijpvp.2006.06.004
17.
Reddy
,
J. N.
,
1997
,
Mechanics of Laminated Composite Plates: Theory and Analysis
,
CRC Press
,
Boca Raton, FL
.
18.
Bouzid
,
A.
, and
Chaaban
,
A.
,
1993
, “
Flanged Joints Analysis: A Simplified Method Based on Elastic Interaction
,”
CSME Trans.
,
17
(
2
), pp.
181
196
.10.1139/tcsme-1993-0011
19.
Waters
,
E. O.
,
Rossheim
,
D. B.
,
Westrom
,
D. B.
, and
Williams
,
F. S. G.
,
1979
,
Development of the General Formulas for Bolted Flanges: A PVRC Monograph of the 1949 Classic
,
Taylor Forge & Pipe Works
, Southfield, MI.
20.
ASME
,
2015
,
ASME Boiler and Pressure Vessel Code Section VIII Div. 1, Rules for Construction of Pressure Vessels
,
ASME
,
New York
.
You do not currently have access to this content.