Application of multi-mode buckling approach to load-carrying capacity estimation of thin-walled columns made of non-symmetric laminates subjected to compression
Referat wygłoszony
| Status: | |
| Autorzy: | Teter Andrzej, Kołakowski Zbigniew, Mania Radosław J. |
| Rok wydania: | 2018 |
| Język: | angielski |
| Źródło: | 8 International Conference on Thin-Walled Structures (ICTWS 2018) |
| Miasto wystąpienia: | Lisbon |
| Państwo wystąpienia: | PORTUGALIA |
| Efekt badań statutowych | TAK |
| Abstrakty: | angielski |
| In the paper the behaviour of axially-compressed thin-walled hat-section column made of non-symmetric laminates was discussed. In a laminate with assumed configuration membrane-bending coupling occurred. The influence of each particular element of B coupling matrix on the column load-capacity was investigated in details. Geometric dimensions were chosen taking into account occurrence of strong interaction between local and global buckling modes. Simultaneously assumption that the lowest value of critical stress corresponds to local buckling was made. Detailed analysis proved that not all of laminate configurations where membrane-bending coupling occurs, particular members of B matrix exist. Introduction of stiffness reduction coefficients in 1D model for a given laminate configuration allows to initially assess the influence of layer configuration on critical load, buckling modes and load-carrying capacity. The different influence of reduction coefficients on global and local critical load, corresponding to them buckling modes - including distortional buckling modes and load-carrying capacity, were assessed |
