Analytical solutions for the impact problems of conical rod structures with supporting spring are provided.

Three-dimensional finite-element analysis of taper screw stress of extruder for straw;

The objective is to present analytical solutions of longitudinal impact analysis for slender conical rods struck by a particle and a new method is proposed for conical rod-particle impact analysis,in which the superposition method is used and the response of the rod is presented.

The tapered waveguide performs mode transformation between optical fiber mode and polymer waveguide mode by using a refractive index taper and a width taper with wedge profile.