Next Article in Journal
Understanding Satellite Image-Based Green Space Distribution for Setting up Solutions on Effective Urban Environment Management
Previous Article in Journal
Spread of Antibiotic Resistance in Aquatic Environments: E. coli as a Case Study
Article Menu
Issue 8 (ICEM 2018) cover image

Article Versions

Export Article

Open AccessProceedings
Proceedings 2018, 2(8), 545; https://doi.org/10.3390/ICEM18-05440

Stress Attenuation and Energy Absorption of the Coral Sand with Different Particle Sizes under Impacts

1
State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing 210007, China
2
Shanghai Communications Water Transportation Design and Research Co., Ltd., Shanghai 200092, China
Presented at the 18th International Conference on Experimental Mechanics, Brussels, Belgium, 1–5 July 2018.
*
Author to whom correspondence should be addressed.
Published: 12 July 2018
PDF [674 KB, uploaded 6 August 2018]

Abstract

The stress wave attenuation and energy absorption in the coral sand were respectively investigated. A series of experiments were carried out by using a new methodology with an improved split Hopkinson pressure bar (SHPB). Four types of coral sand, i.e., particle sizes of 1.18–0.60 mm, 0.60–0.30 mm, 0.30–0.15 mm, and 0.15–0.075 mm, were carefully sieved and tested. Significant effects of coral sand on stress wave attenuation and energy absorption were observed. Correlation between stress wave attenuation and energy absorption of coral sand was validated. Conclusions on particle size effect of stress wave attenuation and energy absorption, which support each other, were drawn. There existed a common critical stress zone for coral sand with different particle sizes. When the stress below this zone, sand with small particle sizes attenuates stress wave better and absorb energy more; when the stress beyond this zone, sand with larger particle sizes behave better on stress wave attenuation and energy absorption.
Keywords: coral sand; particle size; stress wave attenuation; energy absorption; SHPB coral sand; particle size; stress wave attenuation; energy absorption; SHPB
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Yu, X.; Chen, L.; fang, Q.; Chen, W. Stress Attenuation and Energy Absorption of the Coral Sand with Different Particle Sizes under Impacts. Proceedings 2018, 2, 545.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Proceedings EISSN 2504-3900 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top