Smoothed particle hydrodynamics in a generalized coordinate system with a finite‐deformation constitutive model

• 矢代, 茂樹

  静岡大学工学部機械工学科

• 岡部, 朋永

  東北大学大学院工学研究科航空宇宙工学専攻

書誌事項

タイトル別名

• Smoothed particle hydrodynamics in a generalized coordinate system with a finite-deformation constitutive model

抄録

This study proposes smoothed particle hydrodynamics (SPH) in a generalized coordinate system. The present approach allocates particles inhomogeneously in the Cartesian coordinate system, and arranges them via mapping in a generalized coordinate system in which the particles are aligned at a uniform spacing. This characteristic enables us to employ fine division only in the direction required, e.g., in the through-thickness direction for a thin-plate problem, and thus to reduce computation cost. This study provides the formulation of SPH in a generalized coordinate system with a finite-deformation constitutive model and then verifies it by analyzing quasi-static and dynamic problems of solids. High-velocity impact test was also performed with an aluminum target and a steel sphere, and the predicted crater shape agreed well with the experiment. Furthermore, the numerical study demonstrated that the present approach successfully reduced the computation cost with marginal degradation of accuracy.

収録刊行物

• International Journal for Numerical Methods in Engineering

  International Journal for Numerical Methods in Engineering 103 (11), 781-797, 2015-04-16

  John Wiley and Sons

キーワード

• Solids
• Particle methods
• Impact
• Mapping

詳細情報

• CRID: 1050017057727325824
• NII論文ID: 120007039335
• NII書誌ID: AA11621377
• DOI: 10.1002/nme.4906
• ISSN: 10970207
• ISSN: 00295981
• HANDLE: 2324/4476056
• Web Site: https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fnme.4906
• Web Site: https://onlinelibrary.wiley.com/doi/pdf/10.1002/nme.4906
• 本文言語コード: en
• 資料種別: journal article
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