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All-hexahedral meshing and remeshing for multi-object manufacturing applications

机译：用于多对象制造应用的全六面体网格划分和重新网格化

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All-hexahedral meshing and remeshing algorithms giving support to finite element modeling of manufacturing processes require continuous development for improving its overall robustness and applicability. This paper draws from a previous all-hexahedral algorithm presented by the authors and proposes new developments related to the construction of adaptive core meshes and processing of multi-objects that are typical of manufacturing applications. Along with the aforementioned improvements there are other developments that will also be presented due to their effectiveness in increasing the robustness of all-hexahedral algorithms. These include identification and simplification of boundary features, reconstruction of vertices and edges with minimum element distortion, smoothing of nodal points along edges and topology based mesh repair procedures to ensure completeness of edge representation. The presentation is enriched with examples taken from pure geometry and metal forming applications, and a resistance projection welding industrial test case consisting of four different objects is included to show the capabilities of selective remeshing of objects while maintaining contact conditions and local geometrical details that are critical for electro-thermo-mechanical numerical simulations.
机译：支持制造过程的有限元建模的全六面体网格划分和重新网格化算法需要不断开发，以提高其整体鲁棒性和适用性。本文借鉴了作者先前提出的全六面体算法，并提出了与自适应核心网格的构建和制造应用中典型的多对象处理有关的新进展。除了上述改进之外，由于它们在提高全六面体算法的鲁棒性方面的有效性，还将提出其他发展。这些包括识别和简化边界特征，以最小的元素变形重建顶点和边缘，沿边缘的节点平滑以及基于拓扑的网格修复程序以确保边缘表示的完整性。演示中丰富了来自纯几何和金属成型应用的示例，并且包括了由四个不同对象组成的电阻投影焊接工业测试用例，以展示在保持接触条件和关键的局部几何细节的同时，选择性地刷新对象的功能。用于电热机械数值模拟。

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