Effect of torsional buckling susceptibility in laminated cruciform columns: A 1D model
Artykuł w czasopiśmie
MNiSW
140
Lista 2024
| Status: | |
| Autorzy: | Kołakowski Zbigniew, Teter Andrzej |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Rok wydania: | 2025 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Numer czasopisma: | Pt A |
| Wolumen/Tom: | 215 |
| Numer artykułu: | 113481 |
| Strony: | 1 - 14 |
| Impact Factor: | 6,6 |
| Web of Science® Times Cited: | 0 |
| Scopus® Cytowania: | 0 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| This study examines the global torsional buckling of prismatic laminated cruciform columns. Additionally, it analyses the influence of stiffness matrix elements and torsional buckling susceptibility on the torsional stability of general laminate columns. A one-dimensional model based on the classical laminated plate theory (CLPT) is proposed, with the eigenproblem solved using four distinct methods. Two of these methods extend the established approach for unconstrained torsion in rectangular sections. Method 1 assumes a direct proportionality between the torque and the torsional angle in unconstrained torsion, while Method 2 introduces a dependency between the torsional angle and the susceptibility to torsional buckling. Method 3 employs a plate model grounded in Koiter's theory. While Methods 1-3 address pure unconstrained torsional buckling, Method 4 uses a three-dimensional shell model developed with the Finite Element Method (FEM), which serves to verify the accuracy of the previous methods. The FEM model also takes into account cross-sectional warping. Comprehensive simulations are performed on simply supported thin-walled cruciform columns under uniform compression. Twenty-two different stacking sequences of a general laminate are analyzed, each exhibiting a unique in-plane and out-of-plane coupling effect. A comparison of the eigenvalues calculated using various methods reveals that Method 2 (1D model) is the most suitable for practical applications due to its high accuracy. The discrepancies between the eigenvalues obtained from this method and those from the FEM model are within 10 %. Furthermore, Method 2 is less labor-intensive than Method 1. |
