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首页> 外文会议>ASME international mechanical engineering congress and exposition >Using Analytical/Numerical Matching with Finte Element Analysis to Solve a Fluid-Loaded Structural Dynamics Problem
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Using Analytical/Numerical Matching with Finte Element Analysis to Solve a Fluid-Loaded Structural Dynamics Problem

机译：使用分析/数字匹配和有限元分析来解决流体荷载结构动力学问题

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摘要

Two model problems are solved using a combination of Analytical/Numerical Matching (ANM) and Finite Element Analysis (FEA). The first problem is that of a thick, finite length beam driven by the motion of a small rigid support allached to its lower boundary. Teh second problem is a thick, infinitely long fluid-loaded beam driven by the motion of periodically spaced rigid supports (identical to the support of the first problem) The ANM process divides an original problem into local, matching, and global sub-problems through the use of a smooth force and the principle of superposition. In the two model problems presented, the same high-resoultion local (in vacuo) problem is solved using FEA. The fluid loading effects can be accounted for entirely by the global problem. The problems presented show that ANM is a computationally efficient method that retains the hgih accuracy needed near structural discontinuities.
机译：结合使用分析/数值匹配（ANM）和有限元分析（FEA）解决了两个模型问题。第一个问题是一个厚的，有限长度的梁，该梁是由一个小的刚性支撑件的运动驱动的，该刚性支撑件的下部边界。第二个问题是由周期性间隔开的刚性支撑（与第一个问题的支撑相同）驱动的厚而无限长的流体加载梁。ANM过程将原始问题分解为局部问题，匹配问题和整体子问题使用平滑力和叠加原理。在提出的两个模型问题中，使用FEA解决了相同的高耗能局部（真空）问题。流体负荷的影响可以完全由全球性问题来解释。出现的问题表明，ANM是一种计算有效的方法，可以保留结构不连续附近所需的hgih精度。

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