Related Experiment Video
Updated: Feb 26, 2026

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
Published on: June 28, 2024
Numerical investigation of dispersive behaviors for helical thread waveguides using the semi-analytical isogeometric
Yijie Liu1, Qiang Han2, Yingjing Liang3
1Department of Engineering Mechanics, School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, PR China; Department of Engineering Mechanics, School of Civil Engineering, Guangzhou University, Guangzhou, PR China.
Abstract:
In this paper, we propose a semi-analytical isogeometric analysis(S-IGA) approach in the twist space to investigate the dispersive properties in helical thread waveguides, which combines the advantages of the spectral approach and IGA. The convergence and accuracy of the proposed method are discussed, by comparing S-IGA results with reference solutions. Additionally, the analytical expression of axial offset wavenumbers is derived to explain the difference of spectrograms between the Cartesian and twisted systems. In order to illustrate the effectiveness of the proposed method, some dispersion curves of elastic wave propagation in helical thread waveguides are presented for a wide range of thicknesses and tortuosities.
Related Concept Videos
Thin-Walled Hollow Shafts
Bending of Curved Members - Strain Analysis
The important part of bending analysis for such a member...
Unsymmetric Loading of Thin-Walled Members: Problem Solving
To compute the shear forces, find the shear flow at a specific distance from the endpoint using the vertical shear and the moment of inertia values. The total shear force on the flange is calculated by integrating the shear flow from one end of the flange to the other.
Next, calculate the moments of...
Beams with Unsymmetric Loadings
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
Design of Transmission Shafts - Stress Analysis
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity

