 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 13362 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8178
|
| In English (Mech. Solids): | | 5184 |
|
| << Previous article | Volume 60, Issue 5 / 2025 | Next article >> |
| Lin Chen, Yiding Wu, Xuan Zhou, and Guangfa Gao, "Generalized Wave Impedance Error Modeling in Variable-Geometry Waveguides: Mechanisms and Propagation Analysis," Mech. Solids. 60 (5), 3576-3603 (2025) |
| Year |
2025 |
Volume |
60 |
Number |
5 |
Pages |
3576-3603 |
| DOI |
10.1134/S0025654425601715 |
| Title |
Generalized Wave Impedance Error Modeling in Variable-Geometry Waveguides: Mechanisms and Propagation Analysis |
| Author(s) |
Lin Chen (Department of Mechanical Engineering, Nanjing University of Science and Technology, Jiangsu Nanjing, 210094 China)
Yiding Wu (Department of Mechanical Engineering, Nanjing University of Science and Technology, Jiangsu Nanjing, 210094 China)
Xuan Zhou (Department of Mechanical Engineering, Nanjing University of Science and Technology, Jiangsu Nanjing, 210094 China)
Guangfa Gao (Department of Mechanical Engineering, Nanjing University of Science and Technology, Jiangsu Nanjing, 210094 China, chenlin2001@njust.edu.cn) |
| Abstract |
Generalized wave impedance theory, used to simplify stress wave analysis, has practical
limitations. This study examines its applicability under non-ideal conditions, specifically the influence of coupling factors on wave propagation at variable cross-sections via simulations. Based on the
generalized wave impedance theory, this study investigates the influence of coupling factors in generalized wave impedance on stress wave propagation characteristics at variable cross-sections through
simulation analysis. The research reveals that under constant generalized impedance, a larger cross-sectional area ratio reduces the error between theory and simulation for reflected waves but increases
it for transmitted waves. Analyzing the influence of the area ratio, wave impedance ratio, density,
Young’s modulus, and sound speed on transmitted and reflected waves showed that the area ratio is
the primary factor affecting the accuracy of the generalized wave impedance. Maintaining the same
area ratio while altering the density and Young’s modulus ratios (changing wave impedance) revealed
that accuracy improves with increasing amplification coefficients. Sound speed, as a coupling factor
of density and Young’s modulus, had minimal impact on accuracy. The findings not only contribute
to improving the theoretical foundation of Split Hopkinson Pressure Bar (SHPB) experiments but also
offer new perspectives for enhancing the accuracy of material parameter measurements. |
| Keywords |
Generalized wave impedance, Variable cross-section, Error analysis, Stress uniformity |
| Received |
11 April 2025 | Revised |
15 June 2025 | Accepted |
25 June 2025 |
| Link to Fulltext |
|
| << Previous article | Volume 60, Issue 5 / 2025 | Next article >> |
|
 If you find a misprint on a webpage, please help us correct it promptly - just highlight and press Ctrl+Enter
|
|
Russian 
English