Generalised scaling relations for dynamic centrifuge tests
Generalised scaling relations for dynamic centrifuge tests
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DOI：
10.1680/geot.2005.55.5.355
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发表时间：
2005-06
期刊：
影响因子：
5.8
通讯作者：
S. Iai;T. Tobita;Tomohiro Nakahara
中科院分区：
文献类型：
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作者：
S. Iai;T. Tobita;Tomohiro Nakahara
对较大原型进行物理建模的趋势促使人们采取行动，扩大目前的动态离心试验能力。在本文中，提出了一种基于两阶段缩放的概念的方法，该方法允许扩展使用当前可用的设施。在第一阶段中，基于1g场中的缩放关系，将原型按比例缩小为中间虚拟模型，缩放因子为μ（原型/虚拟模型）。在第二阶段中，使用离心场中的传统比例关系将该模型按比例缩小为物理模型，比例因子为η（虚拟模型/物理模型）。以这种方式，大的比例因子λ = μ π ι（原型/物理模型）可以被分解成较小的比例因子μ和η，并且因此可以用较小的比例因子η执行离心模型试验。实际上，现有离心机设施的比例系数限值可以扩大到μ。验证...
The trend toward physical modelling of larger prototypes triggers a move towards expansion of the current capability of dynamic centrifuge tests. In this paper a method based on the concept of two-stage scaling is proposed that allows expanded use of the currently available facilities. In the first stage a prototype is scaled down into an intermediate virtual model based on the scaling relations in a 1g field with a scaling factor of μ (prototype/virtual model). In the second stage this model is scaled down into a physical model using the conventional scaling relations in the centrifugal field with a scaling factor of η (virtual model/physical model). In this manner, a large scaling factor λ = μη (prototype/physical model) can be broken down into the smaller scaling factors μ and η, and thus the centrifuge model tests can be performed with the smaller scaling factor η. In effect, the limits in the scaling factor for the currently available centrifuge facilities can be expanded by a factor of μ. Validation...