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ASTM Selected Technical Papers
Composite Materials: Testing and Design (Third Conference)
By
CA Berg
CA Berg
coordinator
Search for other works by this author on:
FJ McGarry
FJ McGarry
coordinator
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SY Elliott
SY Elliott
1
Douglas Aircraft Company
,
Long Beach, Calif. 90846
;
symposium chairman
.
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ISBN-10:
0-8031-0308-5
ISBN:
978-0-8031-0308-5
No. of Pages:
683
Publisher:
ASTM International
Publication date:
1974

An analysis of the response of a filament-wound spherical vessel to internal pressurization is presented. Based on a structural model of an elastic-plastic bladder inside a transversely isotropic elastic composite, analytic expressions for the stress, strain, and displacement fields are derived for pressures preceding, during, and after bladder yield. Equations for short-term composite failure pressures are predicted using maximum stress, maximum strain, and Norris-Ashkenazi failure criteria. Using the transversely isotropic model, laminate stiffnesses and strengths are computed from the micromechanically predicted lamina properties. The results are evaluated numerically for the PRD-49/epoxy, Thornel 400/epoxy, and Thornel 75S/epoxy systems, for a range of wall thicknesses. The Norris-Ashkenazi criterion is seen to give the most conservative failure predictions for the structure. The analysis emphasizes the need for reasonable radial compressive strengths and high filament volume fraction in obtaining a high-burst-pressure design.

1.
Werren
,
F.
and
Norris
,
C. B.
, “
Mechanical Properties of a Laminate Designed to be Isotropic
,” Forest Products Laboratory Report 1841,
U. S. Department of Agriculture
,
1953
.
2.
Bert
,
C. W.
,
Introduction to Analysis and Design of Composite-Material Structures
(manuscript), School of Aerospace and Mechanical Engineering,
University of Oklahoma
,
1970
.
3.
Kaminski
,
B. E.
and
Lantz
,
R. B.
, “
Strength Theories of Failure for Anisotropic Materials
,”
Composite Materials: Testing and Design, ASTM STP 460
,
American Society for Testing and Materials
,
1969
, pp. 160–169.
4.
Love
,
A. E. H.
,
A Treatise on the Mathematical Theory of Elasticity
, Dover reprint of fourth (1927) edition,
1944
, Sections 110 and 114.
5.
Hill
,
R.
,
The Mathematical Theory of Plasticity
,
Oxford at the Clarendon Press
,
1950
, Chapters II and V.
6.
Tsai
,
S. W.
, “
Mechanics of Composite Materials Part II—Theoretical Aspects
,” AFML-TR-66-149, Pt. II,
1966
.
7.
Lekhnitskii
,
S. G.
,
Theory of Elasticity of an Anisotropic Elastic Body
, translated by P. Fern,
Holden-Day, Inc.
,
1963
.
8.
Chamis
,
C. C.
and
Sendeckyj
,
G. P.
, “
Critique on Theories Predicting Thermoelastic Properties of Fibrous Composites
,”
Journal of Composite Materials
 0021-9983, Vol.
2
, No.
3
,
1968
, pp. 332–359.
9.
Whitney
,
J. J.
, “
Elastic Moduli of Unidirectional Composites with Anisotropic Filaments
,”
Journal of Composite Materials
 0021-9983, Vol.
1
, No.
2
,
1967
, pp. 188–193.
10.
Foye
,
R. L.
, “
Advanced Design Concepts for Advanced Composite Airframes
,” AFML-TR-68-91, Vol.
1
,
1968
.
11.
McCullough
,
R. L.
,
Concepts of Fiber-Resin Composites
,
Marcel Dekker, Inc.
,
1971
.
12.
Bert
,
C. W.
, College of Engineering,
University of Oklahoma
, private communication,
06
1972
.
13.
Bert
,
C. W.
, “
Plasticity and Creep Analysis of Filamentary Metal Matrix Composites
,” SC-DR-72 0055,
Sandia Laboratories
,
1972
.
14.
Kuehl
,
D.
,
United Aircraft Corp., Hamilton-Standard Div.
, Windsor Locks, Conn., private communication,
06
1972
.
15.
Thornel 75S Graphite Yarn, Grade WYJ 160 1/2
,”
Union Carbide Corp.
Technical Information Bulletin
465-215bb
,
1972
.
16.
Thornel 400 Graphite Yarn, Grade WYM 60 1/0
,”
Union Carbide Corp.
Technical Information Bulletin
465-219bb
,
1972
.
17.
Chiao
,
T. T.
,
Moore
,
R. L.
,
Walkup
,
C. M.
, “
Graphite Fiber/Epoxy Composites
,” UCRL preprint
74579
,
1973
, to appear in
SAMPE Quarterly
 0036-0821.
18.
Chiao
,
T. T.
,
Wells
,
J. E.
,
Moore
,
R. L.
, and
Hamstad
,
M. A.
, “
Stress Rupture of an Organic Fiber/Epoxy Matrix
,”
Composite Materials: Testing and Design (Third Conference), ASTM STP 546
,
American Society for Testing and Materials
,
1973
, pp.209–224.
19.
Quant
,
A. J.
and
Hatcher
,
C. W.
, “
Encapsulating Resins Properties Chart
,”
Sandia Laboratories
, Div. 5513,
1971
.
20.
Thornel Prepreg Tape and Broadgoods: ERLB Epoxy Resin
,” Union Carbide Technical Information Bulletin
465-216cj
,
1972
.
21.
Aluminum Standards and Data
, Third Edition,
The Aluminum Association
,
1972
.
22.
Tsai
,
S. W.
and
Pagano
,
N. J.
, “
Invariant Properties of Composite Materials
,” in
Composite Materials Workshop
,
Technomic
,
1968
, pp. 233–253.
23.
Noyes
,
J. V.
and
Jones
,
B. H.
, “
Crazing and Yielding of Reinforced Composites
,” AFML-TR-68-51,
1968
.
24.
Chamis
,
C. C.
, “
Failure Criteria for Filamentary Composites
,”
Composite Materials: Testing and Design, ASTM STP 460
,
American Society for Testing and Materials
,
1969
, pp. 336–351.
25.
Gerstle
,
F. P
and
Guess
,
T. R.
,
Sandia Laboratories
, unpublished data.
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