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Gaussian Kernel Smoothing of Explicit Transient Responses for Drop-Impact Analysis

낙하 충격 해석을 위한 명시법 과도응답의 가우스커널 평활화 기법

  • 박문식 (한남대학교 기계공학과) ;
  • 강봉수 (한남대학교 기계공학과)
  • Received : 2010.12.20
  • Accepted : 2011.01.07
  • Published : 2011.03.01

Abstract

The explicit finite element method is an essential tool for solving large problems with severe nonlinear characteristics, but its results can be difficult to interpret. In particular, it can be impossible to evaluate its acceleration responses because of severe discontinuity, extreme noise or aliasing. We suggest a new post-processing method for transient responses and their response spectra. We propose smoothing methods using a Gaussian kernel without in depth knowledge of the complex frequency characteristics; such methods are successfully used in the filtering of digital signals. This smoothing can be done by measuring the velocity results and monitoring the response spectra. Gaussian kernel smoothing gives a better smoothness and representation of the peak values than other approaches do. The floor response spectra can be derived using smoothed accelerations for the design.

Keywords

Explicit Method;Gaussian Kernel Smoothing;Drop Impact;Surveillance Robot;Protection Cover;Transient Response;Floor Response Spectrum

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  2. Protector Design and Shock Analysis for a Launch-Reconnaissance Robot vol.35, pp.8, 2011, https://doi.org/10.3795/KSME-A.2011.35.8.971