E-viri
Recenzirano
-
Kapl, Mario; Sangalli, Giancarlo; Takacs, Thomas
Computer aided design, April 2018, Letnik: 97Journal Article
The construction of smooth surfaces of complex shapes is at the heart of computer-aided design (CAD). Many different approaches generating C1-smooth surfaces are available and well-studied. Isogeometric analysis (IGA) has sparked new interest in these methods, since it allows to incorporate CAD based parameterizations into numerical simulations. In IGA one can utilize shape functions of global C1 continuity (or of higher continuity) over multi-patch geometries. Such functions can then be used to discretize high order partial differential equations, such as the biharmonic equation. However, the requirements posed by the IGA simulation are often different from the requirements in CAD. The construction ofC1-smooth isogeometric functions is a non-trivial task and requires particular multi-patch parameterizations to ensure that the resulting C1 isogeometric spaces possess optimal approximation properties. For this purpose, we select so-called analysis-suitable G1 (AS-G1) parameterizations, proposed in Collin et al. (2016). In this work, we show through examples that it is possible to construct AS-G1 multi-patch parameterizations of planar domains, given their boundary. More precisely, given a generic multi-patch geometry, we generate an AS-G1 multi-patch parameterization possessing the same boundary, the same vertices and the same first derivatives at the vertices, and which is as close as possible to this initial geometry. Our algorithm is based on a quadratic optimization problem with linear side constraints. Numerical tests also confirm that C1 isogeometric spaces over AS-G1 multi-patch parameterized domains converge optimally under mesh refinement, while for generic parameterizations the convergence order is severely reduced. •Algorithm to construct analysis-suitable (AS) G1 multi-patch parameterizations of planar domains.•AS-G1 parameterizations are needed to define C1 isogeometric spaces with optimal approximation properties.•Method is simple and requires only to solve a system of linear equations.•Several examples to demonstrate the potential of our algorithm and to show the flexibility of AS-G1 geometries.
Vnos na polico
Trajna povezava
- URL:
Faktor vpliva
Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
---|
Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
---|
Vir: Osebne bibliografije
in: SICRIS
To gradivo vam je dostopno v celotnem besedilu. Če kljub temu želite naročiti gradivo, kliknite gumb Nadaljuj.