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Published in: Strength of Materials 5/2021

03-01-2022

Strength Criteria of Obliquely Wound Composite Tubes Under Biaxial Tension

Authors: A. N. Polilov, D. D. Vlasov, O. Yu. Sklemina, N. A. Tatus’

Published in: Strength of Materials | Issue 5/2021

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Abstract

A layer-by-layer method of stress calculation in symmetrical pairs of layers is proposed to estimate the bearing capacity of composite pressure vessels, for which simple criteria of biaxial tensile strength of composite pipes are substantiated. According to the model of a diamond-shaped (rhombus) assembly of inextensible fibers, the limiting surface in the stress space represents a rectangle. Stresses corresponding to the points on the sides of this rectangle determine the conditions of different types of failure: matrix cracking or fiber bursting. The limiting surface can be described by a single equation of an inclined ellipse. We propose a simple method for constructing the limiting surface for a pair of symmetrically wound layers based on only two values of winding strength (0) and (+45°) under uniaxial axial tension. Comparison of the calculated stresses with the ultimate surface for each pair of layers allows one to formulate the optimal design problem in terms of equality of safety factors for each pair of layers.
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Metadata
Title
Strength Criteria of Obliquely Wound Composite Tubes Under Biaxial Tension
Authors
A. N. Polilov
D. D. Vlasov
O. Yu. Sklemina
N. A. Tatus’
Publication date
03-01-2022
Publisher
Springer US
Published in
Strength of Materials / Issue 5/2021
Print ISSN: 0039-2316
Electronic ISSN: 1573-9325
DOI
https://doi.org/10.1007/s11223-021-00342-7

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