Research Information System
6th Int. Conference on Advances in Mechanical Engineering (ICAME 2021), İstanbul, Turkey, 20 October 2021 - 22 October 2022, pp.1-11, (Full Text)
Fiber, named from a latin word fibra, is a natural or man-made substance which has relatively longer length when compared to its width. Nonwoven materials with bicomponent fibers exhibit superior strength when compared to the strength of those with mono-component fibers. The longitudinal wave propagation, displacement, and stress behavior of the bicomponent polymer fibers are examined by both analytically and computationally. Analytical solution is performed by solution of the wave equation with damping parameter using separation of variables method and computational solution is developed by explicit method with time marching. Results of these methods display a very good agreement and validation of the developed explicit method is attained. After validation, natural frequencies, and corresponding mode shapes of different kinds of bicomponent fibers are provided. Moreover, influences of time, damping parameter, polymer material type, core and sheath ratio (C/S) on displacement and stress behavior are examined. Determination of the wave characteristics and corresponding stress distributions are significant to understand the dynamic response of nonwoven materials especially used as dampers and shock absorbers. Results of this study clearly indicate that explicit methods are fast, reliable, and efficient in the solution of wave propagation problems involving polymer fiber materials including viscoelastic properties.