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arbitrary geometric constraint 1

christa philtri geometrically justified 1

cleft lip and palate 1

geometrically nonlinear 1

intrinsic scale 1

isogeometric analysis 1

level set method 1

rotation advancement 1

size-dependence 1

sufficient rotation 1

surface effect 1

thin elastic film 1

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Sufficient downward rotation of the christa philtri on the cleft side: a modified technique

Yi Xu, Jingtao Li, Bing Shi

Frontiers of Medicine 2013, Volume 7, Issue 4, Pages 510-516 doi: 10.1007/s11684-013-0299-6

Abstract: However, this method may leave the christa philtri on the cleft side insufficiently downward rotated,In this study, we introduce a modified technique to better rotate the christa philtri on the cleft sideThe lip height, lip length, and relative height of the christa philtri were measured for symmetry evaluationNo significant difference was observed between the relative height of the christa philtri on both sidesThese results suggested that sufficient and stable downward rotation of the christa philtri on the cleft

Keywords： cleft lip and palate rotation advancement sufficient rotation christa philtri geometrically justified

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Geometrically constrained isogeometric parameterized level-set based topology optimization via trimmed

Yingjun WANG,David J. BENSON

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4, Pages 328-343 doi: 10.1007/s11465-016-0403-0

Abstract:

In this paper, an approach based on the fast point-in-polygon (PIP) algorithm and trimmed elements is proposed for isogeometric topology optimization (TO) with arbitrary geometric constraints. The isogeometric parameterized level-set-based TO method, which directly uses the non-uniform rational basis splines (NURBS) for both level set function (LSF) parameterization and objective function calculation, provides higher accuracy and efficiency than previous methods. The integration of trimmed elements is completed by the efficient quadrature rule that can design the quadrature points and weights for arbitrary geometric shape. Numerical examples demonstrate the efficiency and flexibility of the method.

Keywords： isogeometric analysis topology optimization level set method arbitrary geometric constraint trimmed element