Nonlinear transient responses of FG-CNTRC cylindrical shells: Influence of hygro-thermal effect

This article draws support from time-displacement curve and phase trajectory to illustrate the transient responses of functionally graded carbon nanotube reinforced composite (FG-CNTRC) cylindrical shell subjected to uniform blast load in hygro-thermal environment, the elastic foundation and geometrical imperfection are also considered. Subsequently, the transient response problem of the FG-CNTRC cylindrical shell is solved using the Runge-Kutta method, and the response of three degree of freedom system under blast load is tracked by time-displacement curves and phase trajectory. Finally, the effects of CNT distribution type, CNT volume fraction, elastic foundation, geometrical parameters of the cylindrical shell, prestress, geometrical imperfection, axial velocity, damping, load types, and other factors on the transient response of the FG-CNTRC cylindrical shell are discussed in numerical analysis, and the conclusions suggest that increasing the content of CNT and adjusting the geometrical parameters of the structure reasonably have a positive impact.