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Generalized ▫$C^1$▫ Clough-Tocher splines for CAGD and FEMGrošelj, Jan, 1988- ; Knez, Marjetka, 1978-Članek posplošuje klasični prostor ▫$C^1$▫ kubičnih Clough-Tocherjevih zlepkov nad triangulacijo na ▫$C^1$▫ prostor poljubne stopnje, višje od tri. Pokaže, da je obravnavane prostore moč opremiti z ... bazo, sestavljeno iz nenegativnih lokalno podprtih funkcij, ki sestavljajo razčlenitev enote, in demonstrira uporabnost te baze v kontekstu metode končnih elementov (MKE). Analizirani prostori imajo optimalno aproksimacijsko moč in so definirani z zahtevo po dodatni gladkosti v notranjosti trikotnikov triangulacije, kjer je uporabljena Clough-Tocherjeva delitev. Lokalno, nad vsakim trikotnikom triangulacije, so zlepki izraženi v Bernstein-Bézierjevi obliki, kar omogoča izkoristek geometrijskih lastnosti in računskih tehnik, ki odlikujejo tovrstno predstavitev. Reševanje robnih problemov z Galerkinovo diskretizacijo je tako relativno enostavno in je ilustrirano z več primeri.Source: Computer methods in applied mechanics and engineering. - ISSN 0045-7825 (Vol. 395, May 2022, art. 114983 (22 str.))Type of material - article, component part ; adult, seriousPublish date - 2022Language - englishCOBISS.SI-ID - 125760515
Author
Grošelj, Jan, 1988- |
Knez, Marjetka, 1978-
Topics
$C^1$ zlepki nad triangulacijami |
Clough–Tocherjevi zlepki |
Bernstein–Bézierjeva predstavitev |
nenegativna baza |
metoda končnih elementov |
▫$C^1$▫ splines over triangulations |
Clough–Tocher splines |
Bernstein–Bézier representation |
non-negative basis; |
finite element method
source: Computer methods in applied mechanics and engineering. - ISSN 0045-7825 (Vol. 395, May 2022, art. 114983 (22 str.))
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Grošelj, Jan, 1988- | 38589 |
Knez, Marjetka, 1978- | 23467 |
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