Split-Hopkinson Pressure Bar Testing of Water with Partial Lateral Confinement

IF 2 3区工程技术 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Experimental Mechanics Pub Date : 2025-01-07 DOI:10.1007/s11340-024-01134-1

K.S.O. Li, A. Van Lerberghe, A. D. Barr, A. A. Dennis, S. D. Clarke

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引用次数: 0

Abstract

Background

For the first time, the high-strain-rate behaviour of water is investigated experimentally and validated to LS-DYNA numerical simulations, using Smooth Particle Hydrodynamics (SPH).

Objective

This paper presents the application of a modified split-Hopkinson pressure bar (SHPB) fitted with a partial lateral confinement apparatus on a water specimen.

Method

The lateral confinement is provided by a water reservoir surrounding the specimen. A pressure transducer is installed in the reservoir wall to measure lateral stresses, and a dispersion correction algorithm, SHPB_Processing.py, is utilised to obtain accurate measurements of axial and radial stresses and strains.

Results

Experimental results underscore the capability of the modified apparatus to assess triaxial behaviour of water under high-strain rates. Comparisons with numerical modelling reveal that cohesion between water particles is non-existent, highlighting an intrinsic limitation in numerical modelling.

Conclusion

These results highlight the capability to perform characterisation of fluids under high-strain rates. While limitations in numerical modelling still exist, numerical modelling and experimental testing using the modified apparatus can be applied to characterise fluid behaviour in the future.

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部分侧向约束水的劈裂-霍普金森压杆试验

本文首次利用光滑颗粒流体力学（SPH）对水的高应变率行为进行了实验研究，并在LS-DYNA数值模拟中进行了验证。目的介绍带局部侧限装置的改进型劈裂霍普金森压杆（SHPB）在水样上的应用。方法通过在标本周围的水库提供侧向约束。在储层壁上安装了一个压力传感器来测量侧向应力，并使用弥散校正算法SHPB_Processing.py来获得轴向和径向应力和应变的精确测量。结果实验结果表明，改进后的装置能够很好地评价水在高应变速率下的三轴特性。与数值模拟的比较表明，水颗粒之间的内聚是不存在的，突出了数值模拟的内在局限性。结论这些结果突出了在高应变速率下对流体进行表征的能力。虽然数值模拟的局限性仍然存在，但使用改进的仪器进行数值模拟和实验测试可以应用于未来的流体行为特征。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Experimental Mechanics 物理-材料科学：表征与测试

CiteScore

4.40

自引率

16.70%

发文量

111

审稿时长

3 months

期刊介绍： Experimental Mechanics is the official journal of the Society for Experimental Mechanics that publishes papers in all areas of experimentation including its theoretical and computational analysis. The journal covers research in design and implementation of novel or improved experiments to characterize materials, structures and systems. Articles extending the frontiers of experimental mechanics at large and small scales are particularly welcome. Coverage extends from research in solid and fluids mechanics to fields at the intersection of disciplines including physics, chemistry and biology. Development of new devices and technologies for metrology applications in a wide range of industrial sectors (e.g., manufacturing, high-performance materials, aerospace, information technology, medicine, energy and environmental technologies) is also covered.