Deformation modeling of viscoelastic objects for their shape control
Deformation modeling of viscoelastic objects for their shape control
复制标题
用于形状控制的粘弹性物体的变形建模
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
S. Hirai
中科院分区：
文献类型：
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作者：
S. Tokumoto;Y. Fujita;S. Hirai
由于粘弹性物体在操作过程中会发生变形，因此有必要模拟物体的行为并估计其变形，以实现自动操作。因此，粘弹性物体的模型需要用于其变形的模拟和估计。提出了一种基于晶格结构的粘弹性物体变形建模方法。首先，简要说明四元素模型的行为。接下来，粘弹性物体被建模为晶格结构，其中质点通过四个元件模型连接。模拟了模型在外力作用下的变形情况，并对模型的有效性进行了讨论。我们还引入了一个非线性阻尼器（NLD）的四元件模型，以解决实际的粘弹性物体和它的线性模型之间的差异。通过比较两种模型的行为，我们证明了使用NLD的模型的有效性。
Since viscoelastic objects deform during operation processes, it is necessary to simulate the behavior of the objects and to estimate their deformation for the automatic operations. Consequently, a model of a viscoelastic object is needed for the simulation and the estimation of its deformation. We propose a lattice structure based modeling method for viscoelastic object deformation. First, the behavior of four element models is briefly explained. Next, a viscoelastic object is modeled as a lattice structure, where mass points are connected through four element models. We simulate shape deformation of the model when force input is applied to it. Validity of the model is then discussed. We also introduce a nonlinear damper (NLD) into a four element model in order to solve a discrepancy between an actual viscoelastic object and its linear model. By comparing the behavior of the two models, we show the validity of the model using NLDs.