HexGen and Hex2Spline: Polycube-Based Hexahedral Mesh Generation and Spline Modeling for Isogeometric Analysis Applications in LS-DYNA

Yu, Yuxuan; Wei, Xiaodong; Li, Angran; Ginny, Liu, Jialei; He, Jeffrey; Zhang, Yongjie

doi:10.1007/978-3-030-92313-6_14

Cited by 9 publications

(1 citation statement)

References 42 publications

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“…However, they only support visualization and not editing. A limited amount of user interaction is present in methods that are predominantly automatic but either permit or require user intervention to solve small (often critical) tasks, such as manually selecting the best cutting membranes for block decomposition [LPP*20, CZL21] or carefully positioning singular vertices inside the domain [YLZ22, YWL*22]. These methods, however, provide limited control to the user.…”

Section: Related Workmentioning

confidence: 99%

HexBox: Interactive Box Modeling of Hexahedral Meshes

Zoccheddu,

Gobbetti,

Livesu

et al. 2023

Computer Graphics Forum

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We introduce HexBox, an intuitive modeling method and interactive tool for creating and editing hexahedral meshes. Hexbox brings the major and widely validated surface modeling paradigm of surface box modeling into the world of hex meshing. The main idea is to allow the user to box‐model a volumetric mesh by primarily modifying its surface through a set of topological and geometric operations. We support, in particular, local and global subdivision, various instantiations of extrusion, removal, and cloning of elements, the creation of non‐conformal or conformal grids, as well as shape modifications through vertex positioning, including manual editing, automatic smoothing, or, eventually, projection on an externally‐provided target surface. At the core of the efficient implementation of the method is the coherent maintenance, at all steps, of two parallel data structures: a hexahedral mesh representing the topology and geometry of the currently modeled shape, and a directed acyclic graph that connects operation nodes to the affected mesh hexahedra. Operations are realized by exploiting recent advancements in grid‐based meshing, such as mixing of 3‐refinement, 2‐refinement, and face‐refinement, and using templated topological bridges to enforce on‐the‐fly mesh conformity across pairs of adjacent elements. A direct manipulation user interface lets users control all operations. The effectiveness of our tool, released as open source to the community, is demonstrated by modeling several complex shapes hard to realize with competing tools and techniques.

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Section: Related Workmentioning

confidence: 99%