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首页> 外文期刊>International Journal of Solids and Structures >EFFECT OF FLAWS ON THE STRESS WAVE PROPAGATION IN PARTICULATE AGGREGATES - NEAR AND FAR FIELD OBSERVATIONS
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EFFECT OF FLAWS ON THE STRESS WAVE PROPAGATION IN PARTICULATE AGGREGATES - NEAR AND FAR FIELD OBSERVATIONS

机译：缺陷对特殊团聚体中应力波传播的影响-近远场观测。

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An experimental study is conducted using dynamic photoelasticity and strain gage techniques to investigate transient stress fields in aggregate assemblies of circular disks. In particular, attention is focused on the effect of damage and damage growth in the particles on the dynamic load transfer process. The experimental data are analyzed to obtain the wave velocity, contact load profiles, peak load attenuation, wave dispersion and other changes in the stress fields as the dynamic load transfer process takes place. Both near and far field effects due to the presence of a flaw on the load transfer process are studied. The results show that the size and the orientation of the flaw greatly influence the load transfer process locally. However, in the far field the flaw only affects the attenuation of the peak loads without changing the wavelength of the loading pulse. [References: 16]
机译：使用动态光弹性和应变计技术进行了一项实验研究，以研究圆盘集合体中的瞬态应力场。特别地，注意力集中在颗粒上的损伤和损伤增长对动态载荷传递过程的影响。分析实验数据以获得随着动态载荷传递过程发生的波速，接触载荷曲线，峰值载荷衰减，波分散和应力场中的其他变化。研究了由于载荷转移过程中存在缺陷而引起的近场和远场效应。结果表明，缺陷的大小和方向在很大程度上影响了载荷传递过程。但是，在远场中，缺陷仅影响峰值负载的衰减，而不会改变负载脉冲的波长。 [参考：16]

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