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首页> 外文期刊>ISRN Mechanical Engineering >FEA Practical Illustration of Mesh-Quality-Results Differences between Structured Mesh and Unstructured Mesh
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FEA Practical Illustration of Mesh-Quality-Results Differences between Structured Mesh and Unstructured Mesh

机译：FEA实际说明结构化网格和非结构化网格之间的网格质量结果差异

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A reliable design via FEA techniques is highly dependent on the execution of an analysis which is accurate and represents the design precisely. The accuracy and efficiency of the two available methods of meshing of the design components (mapped and free meshing) for finite element analysis are addressed in this paper. This paper intends to clarify that the “shape” of the elements rather than the “pattern” is the distinguishing factor for accuracy of the mesh-quality-results. This paper concludes by comparison of the FEA analysis to the analytical theory that element integrity and results are not governed by the elemental aspect ratio alone. The mesh density has a greater effect. Four types of mesh are investigated and compared for results' accuracy. In specific, a low-density free mesh, a high-density free mesh, a mapped mesh with high aspect ratio, and a mapped mesh with low aspect ratio of a plate with center hole are examined and compared. A plate with center hole is selected for this purpose since its far-field structural behavior is predictable and is highly applicable in showing the differences in accuracy among the different meshing methods.
机译：通过FEA技术进行可靠的设计在很大程度上取决于分析的执行，该分析的准确性和精确性代表了设计。本文讨论了有限元分析中两种可用的设计部件网格划分方法（映射和自由网格划分）的准确性和效率。本文旨在阐明元素的“形状”而不是“图案”是网格质量结果准确性的区分因素。本文通过将FEA分析与分析理论进行比较得出结论，即元素的完整性和结果不受元素长宽比的支配。网格密度的影响更大。研究了四种类型的网格，并比较了结果的准确性。具体地，检查并比较了具有中心孔的板的低密度自由网格，高密度自由网格，具有高纵横比的映射网格和具有低纵横比的映射网格。为此选择具有中心孔的板，因为其远场结构行为是可预测的，并且在显示不同啮合方法之间的精度差异方面具有很高的适用性。

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