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- W1997989816 abstract "Abstract It is well-known that B-spline surfaces are defined by a regular array of control vertices. In case of models with arbitrary topology, it is extremely difficult to maintain continuity conditions among neighboring surfaces. The scenario is also true for applications in isogeometric analysis (IGA). This paper presents a novel method for shape design and isogeometric analysis from a quadrilateral control mesh of arbitrary topology using mapped B-spline basis functions. Based on an arbitrary input quadrilateral control mesh, a global parameterization of the final surface is first defined through a Gravity Center Method (GCM). A re-parameterization method is then applied to map a B-spline basis function to others that are explicitly defined and are tailored to each of the control vertices which can be either regular or extraordinary ones. The final surface is defined by all the input control vertices with their corresponding mapped basis functions. For practical implementation, the surface can be evaluated patch by patch. Depending on the order of the B-spline basis function used for mapping to others, the global continuity of the resulting surface, including at extraordinary points, can be arbitrary higher order. In the present paper, a uniform cubic B-spline basis function is used and the resulting surface is globally C 2 continuous. Several numerical examples are provided to demonstrate the proposed method for both shape design and isogeometric analysis." @default.
- W1997989816 created "2016-06-24" @default.
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- W1997989816 date "2014-02-01" @default.
- W1997989816 modified "2023-10-06" @default.
- W1997989816 title "Mapped B-spline basis functions for shape design and isogeometric analysis over an arbitrary parameterization" @default.
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- W1997989816 doi "https://doi.org/10.1016/j.cma.2013.10.023" @default.
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