【摘要】：在熔模鑄造的模擬過程中,型殼網(wǎng)格的質量對于模擬金屬模型的成形形狀、成形性能、內部缺陷等都有很大影響。近來比較引人注目的網(wǎng)格劃分算法當屬Labelle and Shewchuk的等值面填充算法。本文基于改進的等值面填充算法,替換填充包圍盒的晶格和采用特征匹配技術來提高單元網(wǎng)格質量,從而可以快速高效地劃分出任意復雜模型的型殼,這對于保證和提高熔模鑄造充型凝固模擬的準確度具有重要意義。
[Abstract]:In the simulation process of investment casting, the quality of shell mesh has great influence on the forming shape, forming performance and internal defects of the simulation metal model. Recently, the more attractive mesh generation algorithm is Labelle and Shewchuk's equivalent surface filling algorithm. Based on the improved equivalent surface filling algorithm, the lattice of the filled bounding box is replaced and the feature matching technique is used to improve the quality of the cell mesh. Thus, the shell of any complex model can be quickly and efficiently divided. It is of great significance to ensure and improve the accuracy of mold filling and solidification simulation in investment casting.
【作者單位】： 華中科技大學材料成形與模具國家重點實驗室;
【基金】：教育部新世紀優(yōu)秀人才支持計劃(NCET-13-0229) 國家數(shù)控重大專項(2012ZX04010-031)
【分類號】：TG249.5

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