@article{MTMT:34628212,
	title = {Enhanced beam and plate finite elements with shear stress continuity for compressible sandwich structures},
	url = {https://m2.mtmt.hu/api/publication/34628212},
	author = {Hauck, Bence and Szekrényes, András},
	doi = {10.1177/10812865231221992},
	journal-iso = {MATH MECH SOLIDS},
	journal = {MATHEMATICS AND MECHANICS OF SOLIDS},
	volume = {Előzetes kiadás / Early view},
	unique-id = {34628212},
	issn = {1081-2865},
	abstract = {This paper concerns and presents new improved beam and plate finite elements for analysing sandwich structures from the structural and modal points of view. In this study, the material behaviour is supposed to be linear elastic and orthotropic, but the method could be extended for nonlinear problems as well. The current models are able to treat the compressibility of the soft core materials, besides the interlaminar continuity conditions and the zero shear stresses on the shear-free surfaces are granted by the Lagrange multiplier method. In order to provide stress continuity along the element boundaries, the Hermite interpolation is employed for the elementary formulations that yields subparametric finite elements. On the contrary, the semi-analytical solutions of these enhanced beam and plate models are also discussed here for particular boundary conditions. The verification of the new finite elements is carried out by two case studies. The test examples are modelled and solved in commercial finite element software (ANSYS) with general shell and solid elements, too. The results derived from different models are subjected to a comprehensive comparison. Also, the structural and modal analyses of the test examples are presented during the case studies. The structural analysis of an overconstrained sandwich panel is also discussed to point out the significance of the proper shear stress distributions. Finally, the advantages and disadvantages of the newly developed elements and semi-analytical solutions are revealed in detail. © The Author(s) 2024.},
	keywords = {finite element method; Shear stress; shear flow; Lagrange multipliers; Lagrange multipliers; Modal analysis; Sandwich structures; Sandwich structures; Test examples; Software testing; Finite Element; Finite Element; Coremaking; Semi-analytical solution; Case-studies; Beam finite elements; Material behaviour; compressible core; stress continuity; Composite beams and girders; Beams and plates; Compressible core; Plate finite elements; Stress continuity},
	year = {2024},
	eissn = {1741-3028},
	orcid-numbers = {Szekrényes, András/0000-0002-2018-4471}
}

@article{MTMT:34420141,
	title = {Advanced finite element analyses to compute the J-integral for delaminated composite plates},
	url = {https://m2.mtmt.hu/api/publication/34420141},
	author = {Hauck, Bence and Szekrényes, András},
	doi = {10.1016/j.apm.2023.11.012},
	journal-iso = {APPL MATH MODEL},
	journal = {APPLIED MATHEMATICAL MODELLING},
	volume = {126},
	unique-id = {34420141},
	issn = {0307-904X},
	year = {2024},
	eissn = {1872-8480},
	pages = {584-605},
	orcid-numbers = {Szekrényes, András/0000-0002-2018-4471}
}

@{MTMT:34503005,
	title = {Kísérleti módszer fejlesztése rudak tiszta hajlítására a nemlineáris tartományban},
	url = {https://m2.mtmt.hu/api/publication/34503005},
	author = {Máté, Péter and Szekrényes, András},
	booktitle = {XIV. Magyar Mechanikai Konferencia, Az előadások összefoglalói},
	unique-id = {34503005},
	year = {2023},
	pages = {1-2},
	orcid-numbers = {Szekrényes, András/0000-0002-2018-4471}
}

@CONFERENCE{MTMT:34502934,
	title = {Bearing Friction Measurement With a Pendulum},
	url = {https://m2.mtmt.hu/api/publication/34502934},
	author = {Máté, Péter and Szekrényes, András},
	booktitle = {Proceedings of the ASME 2023 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference},
	unique-id = {34502934},
	year = {2023},
	pages = {IDETC2023-117979},
	orcid-numbers = {Szekrényes, András/0000-0002-2018-4471}
}

@{MTMT:34502647,
	title = {Tension loss measurement for a cable traveling over a pulley},
	url = {https://m2.mtmt.hu/api/publication/34502647},
	author = {Máté, Péter and Szekrényes, András},
	booktitle = {Book of Abstracts. 39th Danubia-Adria Symposium on Advances in Experimental Mechanics. 2023 Hungary},
	unique-id = {34502647},
	year = {2023},
	pages = {52-53},
	orcid-numbers = {Szekrényes, András/0000-0002-2018-4471}
}

@article{MTMT:34168018,
	title = {Stability of delaminated composite beams subjected to retarded periodic follower force},
	url = {https://m2.mtmt.hu/api/publication/34168018},
	author = {Szekrényes, András},
	doi = {10.1007/s00419-023-02489-y},
	journal-iso = {ARCH APPL MECH},
	journal = {ARCHIVE OF APPLIED MECHANICS},
	volume = {93},
	unique-id = {34168018},
	issn = {0939-1533},
	abstract = {This work deals with the stability problem of elastic composite cantilever beams subjected to a delayed, periodically changing follower force. The equation of motion of the periodic system with time delay is deduced based on some previous works. Composite beams with and without delamination are considered, and the finite element method is applied to carry out the spatial discretization of the structures. Besides, for the delaminated case further two cases are involved. The first case is when the delamination is in the midplane of the beam, while the second case involves an asymmetrically placed delamination, respectively. The Floquet theory is applied to derive the transition matrix of the periodic system. An important aspect is that the time delay and the principal period of the dynamic force are equal to each other. The discretization over the time domain is performed by using the Chebyshev polynomials of the first kind. Basically, there are five parameters governing the dynamic problem including among others the time delay and the static and dynamic forces. The stability behavior is shown for the intact and delaminated beams on the parameter planes for large number of cases by using the unit circle criteria. The presence and absence of structural damping is also analyzed in each case. The results indicate that some planes are sensitive to the mesh resolution, others are not. Moreover, on some planes significant differences may take place between the intact and delaminated beams from the standpoint of stable zones.},
	keywords = {Time delay; VIBRATION; Delamination; Finite Element; Floquet theory; CHEBYSHEV POLYNOMIALS},
	year = {2023},
	eissn = {1432-0681},
	pages = {4197-4216},
	orcid-numbers = {Szekrényes, András/0000-0002-2018-4471}
}

@{MTMT:34124186,
	title = {Rétegelt kompozit lemezek numerikus modellezése kiegészítő dinamikai feltételekkel},
	url = {https://m2.mtmt.hu/api/publication/34124186},
	author = {Hauck, Bence and Szekrényes, András},
	booktitle = {XIV. Magyar Mechanikai Konferencia, Az előadások összefoglalói},
	unique-id = {34124186},
	year = {2023},
	pages = {1-2},
	orcid-numbers = {Szekrényes, András/0000-0002-2018-4471}
}

@article{MTMT:33753409,
	title = {Fracture mechanical stability of DCB and 4ENF tests complemented with linear springs},
	url = {https://m2.mtmt.hu/api/publication/33753409},
	author = {Szekrényes, András},
	doi = {10.1016/j.tafmec.2023.103900},
	journal-iso = {THEOR APPL FRACT MEC},
	journal = {THEORETICAL AND APPLIED FRACTURE MECHANICS},
	volume = {125},
	unique-id = {33753409},
	issn = {0167-8442},
	year = {2023},
	eissn = {1872-7638},
	orcid-numbers = {Szekrényes, András/0000-0002-2018-4471}
}

@article{MTMT:33648736,
	title = {Fracture mechanical finite element analysis for delaminated composite plates applying the first-order shear deformation plate theory},
	url = {https://m2.mtmt.hu/api/publication/33648736},
	author = {Hauck, Bence and Szekrényes, András},
	doi = {10.1016/j.compstruct.2023.116719},
	journal-iso = {COMPOS STRUCT},
	journal = {COMPOSITE STRUCTURES},
	volume = {308},
	unique-id = {33648736},
	issn = {0263-8223},
	year = {2023},
	eissn = {1879-1085},
	orcid-numbers = {Szekrényes, András/0000-0002-2018-4471}
}

@inproceedings{MTMT:33733407,
	title = {NUMERICAL SOLUTION FOR SECOND- AND THIRD-ORDER COMPOSITE DOUBLY-CURVED SHELLS WITH DELAMINATION BY DIFFERENTIAL QUADRATURE METHOD},
	url = {https://m2.mtmt.hu/api/publication/33733407},
	author = {Szekrényes, András},
	booktitle = {Proceedings of the 20th European Conference on Composite Materials},
	volume = {4},
	unique-id = {33733407},
	year = {2022},
	pages = {653-660},
	orcid-numbers = {Szekrényes, András/0000-0002-2018-4471}
}