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INFLUENCE OF EXTENSION-SHEARING BENDING-TWISTING AND BENDING-TWSTING COUPLING ON THE BUCKLING BEHAVIOUR OF COMPOSITE PROFILES Cover

INFLUENCE OF EXTENSION-SHEARING BENDING-TWISTING AND BENDING-TWSTING COUPLING ON THE BUCKLING BEHAVIOUR OF COMPOSITE PROFILES

Acta Mechanica et Automatica
Volume 19 (2025): Issue 4 (December 2025)
By: Katarzyna FALKOWICZ  
Open Access
|Dec 2025
Figures & tables

Figures & Tables

Fig. 1.

Coupling responses, in relation to the cases under consideration, for due to free thermal contraction, for laminates with: a) Shearing -Extension and Bending-Twisting (E-S; B-T laminate), b) Bending-Twisting coupling (B-T laminate) [17]

Fig. 2.

Physical significance of stiffness terms in force and moment resultantsl

Fig. 3.

The coefficients D16 and D26 value for all considered configurations

Fig. 4.

Effects of mechanical couplings on the coefficients A16 and A26

Fig. 5.

Nondimensional flexural anisotropy parameter β value for all considered configurations

Fig. 6.

Nondimensional flexural anisotropy parameter γ value for all considered configurations

Fig. 7.

Value of nondimensional flexural anisotropy parameter δ for all considered configurations

Fig. 8.

Manufacture samples: a) Q-section profile, b) Z-section profile, c) the example of cross-section of chosen configuration

Fig. 9.

Experimental test stand

Fig. 10.

Experimental buckling mode (with DIC maps) for Z-cross section profiles: a) L1, b) L2, c) L3, d) L4, e) L5

Fig. 11.

Experimental buckling mode (with DIC maps) for omega cross section profiles: a) L1, b) L2, c) L3, d) L4, e) L5

Fig. 12.

Experimental postbuckling equilibrium paths of Z-section profile for all cases

Fig. 13.

Experimental postbuckling equilibrium paths of Ω-section profile for all cases

Buckling load value

No. laminateBucklin load [N] for Ω-sectionBucklin load [N] for Z-section
L18299.53301.6
L27832.53386.6
L3102173352.3
L4119535326.2
L58020.23386.0

Considered layer layouts with type of mechanical couplings

No.SequencesSubscript notation ESDU (1994) [14]Coupling type
L1[0/30/45/60/90]sAFB0DFS-E, TB
L2[90/60/45/30/0]sAFB0DFS-E, TB
L3[90/0/0/45/-45]sASB0DFT-B
L4[45/-45/0/0/90]sASB0DFT-B
L5[0/0/45/-45/90]sASB0DFT-B
DOI: https://doi.org/10.2478/ama-2025-0089 | Journal eISSN: 2300-5319 | Journal ISSN: 1898-4088
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Language: English
Page range: 804 - 811
Submitted on: Nov 3, 2025
Accepted on: Nov 21, 2025
Published on: Dec 31, 2025
Published by: Bialystok University of Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
stability,
couplings,
Extension-Shearing (E-S),
Bending-Twisting (B-T),
buckling
Related subjects:
Engineering,
Electrical engineering,
Electronics,
Mechanical engineering,
Mechanics,
Bioengineering and biomedical engineering,
Biomechanics,
Civil engineering,
Environmental engineering

© 2025 Katarzyna FALKOWICZ, published by Bialystok University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Volume 19 (2025): Issue 4 (December 2025)
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