Kernel sections and global dynamics of nonautonomous Euler–Bernoulli beam equations Huatao Chen, Juan L. G. Guirao, Jingfei Jiang, Dengqing Cao and Xiaoming Fan Eur. Phys. J. Plus, 135 1 (2020) 115 Published online: 23 January 2020 DOI: 10.1140/epjp/s13360-020-00203-3