 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 11262 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8011
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| In English (Mech. Solids): | | 3251 |
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| A.I. Oleinikov, "Strength Criterion Variants for Unidirectional Polymer Composites by the Fracture Condition of the Inter-fibre when there is Compression Perpendicular to the Fibers," Mech. Solids. 57 (7), 1740-1748 (2022) |
| Year |
2022 |
Volume |
57 |
Number |
7 |
Pages |
1740-1748 |
| DOI |
10.3103/S0025654422070159 |
| Title |
Strength Criterion Variants for Unidirectional Polymer Composites by the Fracture Condition of the Inter-fibre when there is Compression Perpendicular to the Fibers |
| Author(s) |
A.I. Oleinikov (Central Aerohydrodynamic Institute, Zhukovsky, Moscow oblast, 140180 Russia; Moscow Institute of Physics and Technology (TsAGI), Dolgoprudny, Moscow oblast, 141701 Russia, alexander.oleinikov@tsagi.ru; a.i.oleinikov@mail.ru) |
| Abstract |
When analyzing the strength of structures made of layered fibrous polymer composite
materials, the fracture criterion of a monolayer, a unidirectionally reinforced composite is used. In a
unidirectional composite, the matrix shearing area makes a dihedral angle with the plane of fibers.
This angle increases with an increase in the ratio of transverse compressive and shear stresses. This
type of fracture of the binder is the most dangerous and leads to the complete destruction of the composite structure. Linear and quadratic versions of the strength criterion are formulated according to
the binder strength condition, taking into account the effect of normal stress on shear resistance, corresponding to the asymmetric friction law. A formula is derived that determines the plane angle of possible fracture. Types of installation tests are considered, and experimental verification of the proposed
criteria is carried out. |
| Keywords |
unidirectional composite, polymer matrix, strength, binder fracture (inter-fiber fracture), anisotropic friction |
| Received |
10 June 2021 | Revised |
09 November 2021 | Accepted |
25 December 2021 |
| Link to Fulltext |
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