| Project/Area Number |
15K12557
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Medical systems
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| Research Institution | Hiroshima University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 人工関節 / 構造最適化 / 3Dプリンタ / ポーラス材料 / 3Dプリンティング / トポロジー最適化 / 応力遮蔽 / 金属3Dプリンタ / 有限要素法 / 多孔質材料 |
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| Outline of Final Research Achievements |
Metal artificial bones have a problem of stiffness matching with the remaining bone because their stiffness is much higher than human bones. In this research, we studied a custom made artificial bone utilizing porous metal for reducing their stiffness. The internal pore structure was designed by numerical structural optimization method. The obtained complicated internal structures were fabricated by metal additive manufacturing. The experimental results shown the stiffness could be designed within 10% error. As the secondary advantage, the strength of the developed porous metal had about 140% higher stiffness than the conventional porous metal. Finally, we identified the developed structure had low stiffness and high strength which are ideal for artificial bones.
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