Algorithm for mixed meshing multiple trimmed parametric surfaces for finite element analysis 多個(gè)裁剪參數(shù)曲面的有限元混合網(wǎng)格剖分法
Using the above algorithms , this thesis proposes two efficient algorithms for evaluating parametric surfaces 根據(jù)以上算法,本文提出了對(duì)參數(shù)曲面快速求值的兩種新方法
The former method is parametric surface integral and the latter is to triangulate closed surface based on nurbs . ( 4 ) the key technique in probabilistic damaged stability calculation is discussed ( 4 )對(duì)概率破艙穩(wěn)性計(jì)算中多艙組合破損時(shí)船體的浮態(tài)與穩(wěn)性計(jì)算發(fā)生異常的原因進(jìn)行了研究。
The problems on parameterization of implicit algebraic surfaces and inversion of parametric surfaces are discussed and the inversion equations for some nurbs surfaces are derived in detail 探討隱式曲面參數(shù)化及cad超曲面重構(gòu)技術(shù)研究及其應(yīng)用參數(shù)曲面反演問題,具體導(dǎo)出了一些nurbs曲面的反演方程。
Secondly , based on nurbs curves approximation algorithm , a nurbs surface approximation algorithm on discrete data sets is given . thirdly , a shape - preserving parametric surface interpolation to data set is given 2基于所給的nurbs曲線的逼近算法,建立了帶插值條件的離散點(diǎn)集的nurbs曲面的逼近算法。