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Pseudo Mapping Method for Singular Integral of Curved Panels

곡면의 특이적분을 위한 가상 매핑 방법

  • Lee, Ik-Jae (Department of Naval Architecture and Ocean Engineering, PNU) ;
  • Kwon, Sun-Hong (Department of Naval Architecture and Ocean Engineering, PNU)
  • 이익재 (부산대학교 조선해양공학과) ;
  • 권순홍 (부산대학교 조선해양공학과)
  • Received : 2019.01.09
  • Accepted : 2019.02.22
  • Published : 2019.02.28

Abstract

A numerical method is suggested for evaluating the singular integral of curved panels in the higher-order boundary element method. Two-step mapping procedures that are significantly related to the physical properties of singular behaviors were developed and illustrated. As a result, the singular behaviors were significantly alleviated, and the efficiency and robustness of the present method for tangentially and axially deformed elements were proven. However, inaccuracies and numerical instabilities of twisted elements were discovered as a result of nonlinearities.

Keywords

Singular integral;Pseudo mapping method;Higher-order boundary element method

Acknowledgement

Supported by : 부산대학교

References

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