TY  - EJOU
AU  - Xu, Jinlan  
AU  - Sun, Ningning  
AU  - Shu, Laixin  
AU  - Rabczuk, Timon  
AU  - Xu, Gang  

TI  - An Improved Integration for Trimmed Geometries in Isogeometric Analysis
T2  - Computers, Materials \& Continua

PY  - 2019
VL  - 60
IS  - 2
SN  - 1546-2226

AB  - Trimming techniques are efficient ways to generate complex geometries in Computer-Aided Design (CAD). In this paper, an improved integration for trimmed geometries in isogeometric analysis (IGA) is proposed. The proposed method can improve the accuracy of the approximation and the condition number of the stiffness matrix. In addition, comparing to the traditional approaches, the trimming techniques can reduce the number of the integration elements with much fewer integration points, which improves the computational efficiency significantly. Several examples are illustrated to show the effectiveness of the proposed approach.
KW  - Isogeometric analysis
KW  -  trimming curves
KW  -  trimmed geometry
KW  -  computational efficiency

DO  - 10.32604/cmc.2019.04464