| Issue |
EPJ Web Conf.
Volume 183, 2018
DYMAT 2018 - 12th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
|
|
|---|---|---|
| Article Number | 01033 | |
| Number of page(s) | 6 | |
| Section | Modelling and Numerical Simulation | |
| DOI | https://doi.org/10.1051/epjconf/201818301033 | |
| Published online | 07 September 2018 | |
https://doi.org/10.1051/epjconf/201818301033
Numerical Analysis and Experiment for Stress Wave Propagation in Two Connected Cylindrical Bodies with Different Cross-Sectional Area and Same Mechanical Impedance
1
Graduate School of Engineering Science, Osaka University,
1-3 Machikaneyama,
Toyonaka,
560-8531,
Japan
2
Kubota Corporation,
1-2-47 Shikitsu-higashi, Naniwa-ku,
Osaka
556-8601,
Japan
3
Institute of Space Dynamics,
3-6, Ondoyama-cho, Narutaki, Ukyo-ku,
Kyoto,
616-8245,
Japan
* E-mail: hiroto.shimanuki@impact.me.es.osaka-u.ac.jp
Published online: 7 September 2018
In this study, the behaviour of elastic stress wave propagating two connected cylindrical bodies was examined using dynamic finite element method (FEM). They consist of two bodies with different cross-sectional area, different Young’s modulus and identical mechanical impedance. It was found that when an incident wave passes through the boundary step between two different cross-sectional areas, a pair of reflected waves which has the same amplitude and opposite sign was observed, despite the same mechanical impedance. This phenomenon appears to be caused by the loading and unloading the boundary section due to the arrival and the passage of incident wave. It was also found that a connection manner to insert the smaller diameter cylinder into the other cylinder with a little length is quite effective for the reduction of the reflected wave, because of the superposition of waves from two edges and control of local deformation. This phenomenon was verified by a series of impact experiments using two cylindrical bodies connected by interference fit.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.