Dynamic instability and free vibration analysis of thin-walled structures with arbitrary cross-sectionsMeng-Jing Wu, Fei-Liang Wang, Iftikhar Azim, Xu-Hao Huang and Jue ZhuEur. Phys. J. Plus, 137 3 (2022) 408DOI: https://doi.org/10.1140/epjp/s13360-022-02600-2