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- W3025313650 abstract "Abstract The Finite Cell Method (FCM) together with Isogeometric analysis (IGA) has been applied successfully in various problems in solid mechanics, in image-based analysis, fluid–structure interaction and in many other applications. A challenging aspect of the isogeometric finite cell method is the integration of cut cells. In particular in three-dimensional simulations the computational effort associated with integration can be the critical component of a simulation. A myriad of integration strategies has been proposed over the past years to ameliorate the difficulties associated with integration, but a general optimal integration framework that suits a broad class of engineering problems is not yet available. In this contribution we provide a thorough investigation of the accuracy and computational effort of the octree integration scheme. We quantify the contribution of the integration error using the theoretical basis provided by Strang’s first lemma. Based on this study we propose an error-estimate-based adaptive integration procedure for immersed isogeometric analysis. Additionally, we present a detailed numerical investigation of the proposed optimal integration algorithm and its application to immersed isogeometric analysis using two- and three-dimensional linear elasticity problems." @default.
- W3025313650 created "2020-05-21" @default.
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- W3025313650 date "2020-12-01" @default.
- W3025313650 modified "2023-10-06" @default.
- W3025313650 title "Error-estimate-based adaptive integration for immersed isogeometric analysis" @default.
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- W3025313650 doi "https://doi.org/10.1016/j.camwa.2020.03.026" @default.
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