ABSTRACT
In this chapter, seismic response of pipes is examined by applying nanotechnology and piezoelectric materials. For this purpose, a pipe is considered that is reinforced by carbon nanotubes (CNTs) and covered with a piezoelectric layer. The structure is subjected to the dynamic loads caused by an earthquake, and the governing equations of the system are derived using the mathematical model via a cylindrical shell element and the Mindlin theory. The Navier–Stokes equation is employed to calculate the force due to the fluid in the pipe. The Mori–Tanaka approach is used to consider the effect of agglomeration and estimate the equivalent material properties of the nanocomposite. Moreover, the dynamic displacement of the structure is extracted using discrete singular convolution method and multiscale method. The main goal of this research is the analysis of the seismic response using a piezoelectric layer and nanotechnology. The results indicate that reinforcing the pipeline with CNTs leads to a reduction in the displacement of the structure during an earthquake. Also, the negative voltage applied to the piezoelectric layer reduces the dynamic displacement.
