Gerrymandering for Interfaces: Modeling the Mechanics of Jointed Structures
Gerrymandering for Interfaces: Modeling the Mechanics of Jointed Structures
复制标题
界面的不公正划分：对连接结构的力学进行建模
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
M. Krack
中科院分区：
文献类型：
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作者：
Tobias Dreher;N. N. Balaji;J. Gross;M. Brake;M. Krack
最近使用 Brake-Reus-Beam (BRB)（一种三螺栓搭接基准系统）进行的实验表明，振荡期间界面内的接触压力和接触面积都不是恒定的，这是用于建模螺栓结构的两个传统假设。因此，保持界面运动学并以一致的方式表示底层物理以开发一致的计算模型非常重要。大多数一致的公式往往会导致模型尺寸较大，从而使大型结构的计算几乎变得困难。然而，在减少界面方面已经做出了多种努力。然而，这些公式中的大多数都具有必须处理大量点来进行非线性力计算的缺点。当前的研究提出了一种界面缩减方法，该方法既与运动学一致，同时不需要转换到原始坐标。基于这个框架，当前的工作还比较了减少程序的不同标准。该方法被证明可以提高非线性模拟的效率（使用两种不同的方法进行），而几乎不牺牲精度。
Recent experiments with the Brake-Reus-Beam (BRB), a three-bolt lap-jointed benchmark system, have shown that neither the contact pressure nor the contact area are constant within the interface during oscillation, two traditional assumptions made for modeling bolted structures. Thus, it is important to preserve interfacial kinematics and represent the underlying physics in a consistent fashion to develop consistent computational models. Most consistent formulations tend to result in large model sizes and thus make computations for large structures nearly intractable. However, there have been multiple efforts at interface reduction. Most of these formulations though, have the disadvantage of having to deal with large number of points for the nonlinear force calculations. The current study proposes an interfacial reduction approach that is both consistent with the kinematics and at the same time does not require transformations to the original coordinates. Based upon this framework, the current work also compares different criteria for the reduction procedure. The method is demonstrated to improve the efficiency of nonlinear simulations (conducted using two different approaches), with little to no sacrifice in accuracy.
影响因子：
3.2
作者：
Medina, S.;Nowell, D.;Dini, D.
通讯作者：
Dini, D.