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Planar and axially symmetric slow shearing granular flows: a comparative evaluation of assembly evolution incorporating wavelet transforms

机译:平面和轴向对称的慢剪切颗粒流:结合小波变换的装配演化的比较评估

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摘要

We demonstrate the enhanced capacities of our analysis toolset for three-dimensional data. In particular, we provide supporting evidence for some of the conclusions reached in our previous studies of two-dimensional avalanching heaps. Segregation by self-diffusion is shown to take place in three-dimensional assemblies and self-diffusion velocities are shown to be of a comparable order of magnitude to those found in plane-strain situations. The effect on assembly evolution by discrete avalanching of the availability of a third dimension for translation is investigated. The discrete wavelet transform is again shown to be a useful component of the toolset in coupling process variables in the context of the discrete defining events associated with assembly evolution. In particular, we move towards the determination of time constants by correlating wavelet coefficients with a time shift. (C) 2004 Elsevier Ltd. All rights reserved.
机译:我们展示了三维数据分析工具集的增强功能。特别是,我们为先前的二维雪崩堆研究中得出的某些结论提供了支持证据。通过自扩散进行的分离被证明是在三维组装中发生的,并且自扩散速度被证明与在平面应变情况下可比的量级相当。研究了通过离散雪崩平移三维空间的可用性对程序集演化的影响。在与装配演化相关的离散定义事件的背景下,离散小波变换再次显示为工具集在耦合过程变量中的有用组件。特别地,我们通过将小波系数与时移相关联来确定时间常数。 (C)2004 Elsevier Ltd.保留所有权利。

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