Electronic Science and Technology ›› 2020, Vol. 33 ›› Issue (5): 38-44.doi: 10.16180/j.cnki.issn1007-7820.2020.05.007

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Isogeometric Analysis of Complex Planar Porous Model

CHEN Yu,CHEN Long   

  1. School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China
  • Received:2019-03-26 Online:2020-05-15 Published:2020-06-02
  • Supported by:
    National Natural Science Foundation of China(51475309);National Natural Science Foundation of China(61772163)


The NURBS-based geometric analysis method commonly use the same geometric description in the model design and analysis stage, which has many advantages. However, due to the limitations of the NURBS surface, it is difficult to effectively model and analyze the porous model. In order to solve the above problems, a segmentation-splicing method was adopted in this paper. In the modeling process of the porous model, the model was divided into several surface patches which were easy to be built by NURBS by using manual division and automatic division. In the analysis process, the surface patches were spliced and the control points were automatically numbered. Modeling and isogeometric analysis of the porous model was achieved in the case of C0 continuous. Comparing the analysis results with the results obtained by ANSYS, the results of the two methods were similar, which proved the effectiveness of the new method.

Key words: finite element method, isogeometric analysis, isoparametric element, holed structures, surface blending, NURBS modeling

CLC Number: 

  • TP391.9