In this section
@article{Bai:2021:10.1016/j.ijmecsci.2021.106691,
author = {Bai, L and Wadee, MA and Köllner, A and Yang, J},
doi = {10.1016/j.ijmecsci.2021.106691},
journal = {International Journal of Mechanical Sciences},
title = {Variational modelling of local-global mode interaction in long rectangular hollow section struts with Ramberg-Osgood type material nonlinearity},
url = {http://dx.doi.org/10.1016/j.ijmecsci.2021.106691},
volume = {209},
year = {2021}
}
TY - JOUR
AB - A variational model describing the nonlinear mode interaction in thin-walled box-section struts under pure axial compression made from a nonlinear material obeying the Ramberg–Osgood law is presented. The formulation combines continuous displacement functions and generalized coordinates, leading to the derivation of a system of differential and integral equations that describe the static equilibrium response of the strut. Solving the system of equations using numerical continuation techniques reveals the strongly unstable post-buckling response arising from combined geometrical and material nonlinearities during the interactive buckling of the global and local buckling modes—the resulting behaviour being more unstable with decreasing material hardening. A finite element (FE) model is also devised and reveals very similar post-buckling behaviour as highlighted in the variational model. The results compare very well in terms of the mechanical destabilization and the post-buckling deformation, which verifies the analytical model.
AU - Bai,L
AU - Wadee,MA
AU - Köllner,A
AU - Yang,J
DO - 10.1016/j.ijmecsci.2021.106691
PY - 2021///
SN - 0020-7403
TI - Variational modelling of local-global mode interaction in long rectangular hollow section struts with Ramberg-Osgood type material nonlinearity
T2 - International Journal of Mechanical Sciences
UR - http://dx.doi.org/10.1016/j.ijmecsci.2021.106691
VL - 209
ER -