3次元シミュレーションによるアルミナーアルミナ摺動面をもつ人工股関節の破損解析 Failure Analysis of Alumina-Alumina Hip Prosthesis by 3-Dimensional Simulation

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Kyocera ABS system, a ceramics-on-ceramics type hip prosthesis, has been prohibited due to consecutive accidents such as the dissociation of the UHMWPE liner and the fracture of the alumina inlay. It has been presumed that loosening of the locking system connecting the metal shell and the liner is the primary mechanism of the liner dissociation. In this study, the finite element analysis (FEA) of the ABS system was conducted to assess the loosening mechanism qualitatively and quantitatively. The FEA results showed that very high stress concentration was generated at the locking grooves of the liner, indicating severe damage was likely formed under high stress condition. The FEA including a damage model was also performed to simulate such damage formation at the locking grooves. The FEA result exhibited that the four grooves were severely damaged under tensile and compression loadings, resulting in the loosening of the locking system. It was thus confirmed that the dissociation of the liner was initiated by those damage formation at the grooves.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 55(5), 336-340, 2008-05-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10021173193
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    REV
  • ISSN
    05328799
  • NDL 記事登録ID
    9531574
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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