| Project/Area Number |
24560092
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Ritsumeikan University (2013-2014)
University of Fukui (2012) |
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Principal Investigator |
ITOH Takamoto 立命館大学, 理工学部, 教授 (40242581)
|
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| Co-Investigator(Renkei-kenkyūsha) |
SAKANE Masao 立命館大学, 理工学部, 教授 (20111130)
YAMAMOTO Takaei 大分大学, 工学部, 助教 (20295166)
HIYOSHI Noritake 石川工業高等専門学校, 機械工学科, 講師 (30342489)
|
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 疲労 / 低サイクル疲労 / 多軸応力 / 金属疲労 / 多軸負荷 / 疲労損傷 / 寿命評価 / 解析ソフト |
|---|
| Outline of Final Research Achievements |
This study presented a simple method of determining stresses and strains and a severity of loading history under non-proportional loadings with defining the rotation angles of the maximum principal stress and strain in a three dimensional stress and strain space. Based on this method, an analytical program for visually presenting the stress/strain state, the non-proportionality of loading, and the damage evaluation was developed. It will be possible for researchers and engineers to assess the fatigue strength under non-proportional loading without requiring special knowledge and judgment about multiaxial loading.
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