“…Many contributions on the dynamical behaviour and stability of microbeams can be found in the literature (Baghani, 2012;Ghayesh, Amabili, & Farokhi, 2013a;Ghayesh & Farokhi, 2013;S ßims ßek, 2010;S ßims ßek & Reddy, 2013;Tang, Ni, Wang, Luo, & Wang, 2014a); the first class of the literature analysed the free dynamics, while the second class examined the forced statics and dynamical behaviour of microbeams subject to a time-varying transverse force or a constant axial force, mainly with the aim of obtaining frequency-response curves for the former (of the second class) and post-buckling/bending amplitude for the latter case (of the second class). This paper is the first which analyses the sub and supercritical complex global dynamics of microbeams subject to a time-dependent axial load by constructing the bifurcation diagrams of Poincaré sections, with special consideration to period-n, quasiperiodic, and chaotic motions.…”