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Our approach aims at reducing element distortion by decomposing complex singular nodes into singular curves using high-quality sheet insertion at proper locations. Then, singular curves that meet the topological parallel requirements are paired to perform the semantic column operation, which eliminates the singular curves. Finally, the topological structure is further optimized by collapsing sheets, resulting in a valid hex mesh with a simpler structure. Compared to existing hexahedral mesh simplification methods, our approach can generate higher quality meshes. Experimental results demonstrate the effectiveness of the proposed method.<\/jats:p>","DOI":"10.1115\/1.4063402","type":"journal-article","created":{"date-parts":[[2023,9,12]],"date-time":"2023-09-12T07:42:55Z","timestamp":1694504575000},"update-policy":"https:\/\/doi.org\/10.1115\/crossmarkpolicy-asme","source":"Crossref","is-referenced-by-count":0,"title":["Singularity Structure Optimization for Hexahedral Mesh Via Dual Operations"],"prefix":"10.1115","volume":"24","author":[{"given":"Chun","family":"Shen","sequence":"first","affiliation":[{"name":"Hangzhou City University Computer & Computer Science, , Hangzhou 310015 , China"}]},{"given":"Rui","family":"Wang","sequence":"additional","affiliation":[{"name":"Ningbo University School of Mechanical Engineering & Mechanics, , Ningbo 315211 , China"}]}],"member":"33","published-online":{"date-parts":[[2023,10,10]]},"reference":[{"issue":"2","key":"2023101009541729800_CIT0001","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1145\/3554920","article-title":"Hex-Mesh Generation and Processing: A Survey","volume":"42","author":"Pietroni","year":"2022","journal-title":"ACM Trans. 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