Suppressing local particle oscillations in the hamiltonian particle method for elasticity

Masahiro Kondo*, Yukihito Suzuki, Seiichi Koshizuka

*この研究の対応する著者

研究成果: Article査読

18 被引用数 (Scopus)

抄録

The governing equation of elasticity is discretized into motion equations of the particles in a Hamiltonian system. A weighted least-square method is adopted to evaluate the Green-Lagrange strain. Using a symplectic scheme for the Hamiltonian system, we obtain the property of energy conservation in the discretized calculations. However, local particle oscillations occur, and they excessively decrease low frequency motion. In this study, we propose the use of an artificial potential force to suppress the local oscillations. The accuracy of the model with and without the inclusion of the artificial force is examined by analyzing a cantilever beam and wave propagation. With the inclusion of the artificial force, the local oscillations are reduced while energy conservation is maintained.

本文言語English
ページ(範囲)1514-1528
ページ数15
ジャーナルInternational Journal for Numerical Methods in Engineering
81
12
DOI
出版ステータスPublished - 2010 3月 19
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)
  • 応用数学
  • 数値解析

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